Quidax Technologies Ltd

Role Description As a Senior Software Engineer, you'll design, build, and operate backend services that power critical parts of the Quidax platform. Beyond implementation, you'll help shape technical direction, mentor engineers, improve engineering practices, and contribute to building a world-class engineering culture. We're looking for someone who can balance speed with quality, make sound engineering trade-offs, and take ownership of services from design through production. What You’ll Be Owning - Build & Scale Core Platform Services - Within your first 90 days: - Deliver production-ready backend features independently. - Become a trusted owner of one or more backend services. - Contribute meaningfully to architecture and design discussions. - Improve service reliability, observability, or performance in at least one area of the platform. - Within your first 6 months: - Lead the design and implementation of complex backend systems. - Drive improvements to engineering quality, maintainability, and developer experience. - Help establish patterns and best practices for building scalable services. - Mentor engineers through code reviews, technical discussions, and design collaboration. - Drive Reliability & Operational Excellence - Own services throughout their lifecycle, from design and implementation to deployment, monitoring, and production support. - Improve system reliability, observability, security, and performance. - Investigate production incidents and drive long-term fixes rather than temporary workarounds. - Continuously identify opportunities to simplify systems and reduce technical debt. - Contribute to Technical Direction - Participate in architecture reviews and technical decision-making. - Help shape how we design APIs, distributed systems, and internal platform services. - Contribute to technical documentation, RFCs, and engineering standards. - Make thoughtful engineering trade-offs between speed, complexity, scalability, and maintainability. - Build a Strong Engineering Culture - Review code and provide actionable feedback. - Advocate for testing, operational excellence, and engineering best practices. - Collaborate effectively across Product, Design, Compliance, Risk, and Engineering. - Raise the bar for ownership, quality, and technical excellence. Biggest Challenges You’ll Tackle - Designing systems that handle high transaction volumes without sacrificing reliability. - Building services that remain secure, available, and observable in a fast-moving financial environment. - Balancing engineering speed with the quality standards expected of financial infrastructure. - Simplifying increasingly complex systems as the platform grows. - Debugging and solving difficult production issues where the answer isn't obvious. - Scaling architecture, processes, and engineering practices alongside rapid business growth. Qualifications - 6+ years of professional software engineering experience. - Strong experience building backend systems with Java and Spring Boot. - Designed and operated production-grade services at scale. - Understanding of distributed systems, micro-services, asynchronous processing, and event-driven architectures. - Experience working with PostgreSQL or MySQL in production environments. - Worked with Redis, caching strategies, and messaging systems such as Kafka. - Ability to design APIs and systems that are reliable, maintainable, and easy to evolve. - Strong debugging, troubleshooting, and production incident management skills. - Effective collaboration across teams and clear communication of technical ideas. - Ownership from problem definition through production support. Technical Skills - Java: JVM Fundamentals, Memory Management, Collections Framework, Generics, Concurrency & Multithreading, Streams API, Exception Handling, Functional Programming Concepts, Performance Optimization, Garbage Collection Fundamentals. - Spring Ecosystem: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Validation, Spring Scheduling, Spring Configuration, Dependency Injection, Transaction Management. - Databases: PostgreSQL or MySQL, Query Optimization, Indexing, Transactions, Isolation Levels, Data Modeling, Database Migrations, Connection Pooling. - Distributed Systems: Microservices Architecture, Event-Driven Architecture, Asynchronous Processing, Message Queues (Kafka, RabbitMQ, etc.), Service Communication, Distributed Transactions, Idempotency, Eventual Consistency, Caching Strategies, API Versioning. - Cloud & DevOps: Docker, Kubernetes, CI/CD Pipelines, AWS (or equivalent cloud platform), Infrastructure as Code (nice to have), Logging & Monitoring, Observability, Distributed Tracing. - Security: OAuth2, OpenID Connect (OIDC), JWT, Authentication & Authorization, Secure API Development, OWASP Top 10, Secrets Management. Our Tech Stack - Java 17+ - Spring Boot - Spring Data JPA - Spring Security - PostgreSQL / MySQL - Redis - Kafka - Docker - Kubernetes - AWS - OpenTelemetry - GitHub Actions - Grafana - Prometheus - REST APIs - OAuth2 / OIDC / JWT Engineering Principles - Continuously improve engineering practices. - Embrace feedback and continuous learning. - Make thoughtful engineering trade-offs. - Prioritize simplicity over unnecessary complexity. - Take ownership beyond writing code. - Build with reliability, scalability, and security in mind. - Use data to guide technical decisions. - Collaborate effectively across teams. Bonus Points If You Have - Experience with Go (Golang). - Experience in fintech, crypto, payments, trading, or regulated industries. - Experience building exchange platforms, trading systems, or financial infrastructure. - Experience with WebSockets, market data systems, liquidity management, or exchange integrations. - Experience with Kubernetes, AWS, and cloud-native environments. - Experience with Domain-Driven Design (DDD), contract testing, or large-scale event-driven systems. Reporting Line You'll report to the Engineering Manager and work closely with senior engineers, product managers, and mobile and frontend teammates to build and strengthen the core of our backend infrastructure. Why Quidax At Quidax, we’re building the future of finance in Africa through crypto. You’ll have the freedom to innovate, the space to lead, and the backing to build something that truly scales. If you’re ready to build an engineering org that delivers excellence at scale, let’s talk. What’s In It For You When you join Quidax, you’re not just taking a job, you’re jumping into a community that’s bold, remote-first, and building for the future. Here’s what you get: - Fair Pay + Ownership: Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Growth That’s Real: Annual performance reviews to support your career development.

Role Description We're looking for a Senior Product Manager to own the Quidax API: the platform that lets other businesses plug crypto and stablecoins straight into their own products. - Know the platform, and the people who use it - First 90 days: get deep on the API. Make test calls, read the docs like a merchant would, and find every spot where integration hurts. - Sit with our biggest merchants. Learn why they use us. - Map the full journey, from first API call to first live transaction, and mark where people drop off. - Own the roadmap for the API - Make the calls on what we build, what we kill, and what we say no to (kindly). - Own pricing and packaging too. Price it so merchants win and so do we. - Ship it, and keep it boringly reliable - Run delivery with Engineering using rituals that stick: sprints, retros, the good stuff. - Grow the number of live merchants and the volume flowing through the API, and have the numbers to back it up. - Hold the line on uptime, security, and compliance. Merchants move their customers' money through us. "Mostly works" isn't a thing. - Make integration super simple (the Enablement bit) - Cut time-to-first-transaction. The faster a merchant goes live, the better the product. - Build docs, sandboxes, and support materials so good that merchants barely need to email us. - Give Sales, Solutions, and Support what they need to win deals and keep merchants happy. Qualifications - 5+ years building products in payments, crypto, fintech, or B2B tech. - You've owned an API or developer platform as a product, not just run tickets for one. You get that your customers are developers, and you design for them. - You make calls with data: adoption, feedback, experiments. Gut helps. Numbers decide. - You run tight agile teams and keep delivery smooth when priorities shift. And they will. - You play well with Engineering, Commercial, Legal, and partners. You turn "what the customer needs" into "what we ship." Requirements - You know your way around custody, liquidity, stablecoins, or on/off ramps. - You're comfortable with compliance, risk, or regulatory frameworks in payments or crypto. - You've built for African, LATAM, or Asian markets. Benefits - Fair Pay + Ownership: Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Growth That’s Real: Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Work That Works For You: Fully remote forever + flexible working hours. - Time Off That Respects Life: Unlimited paid time off + Nigerian national holidays; parental, sick, compassionate, and life event leave; we show up for you. - Connection That Feels Real: Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs); regular engagement surveys; your voice matters. - Health & life coverage in select locations.

Role Description We're looking for a Technical Product Manager to own the Quidax API: the platform that lets other businesses plug crypto and stablecoins straight into their own products. - Know the platform, and the people who use it - First 90 days: get deep on the API. Make test calls, read the docs like a merchant would, and find every spot where integration hurts. - Sit with our biggest merchants. Learn why they use us. - Map the full journey, from first API call to first live transaction, and mark where people drop off. - Own the roadmap for the API - Make the calls on what we build, what we kill, and what we say no to (kindly). - Own pricing and packaging too. Price it so merchants win and so do we. - Ship it, and keep it boringly reliable - Run delivery with Engineering using rituals that stick: sprints, retros, the good stuff. - Grow the number of live merchants and the volume flowing through the API, and have the numbers to back it up. - Hold the line on uptime, security, and compliance. Merchants move their customers' money through us. "Mostly works" isn't a thing. - Make integration super simple (the Enablement bit) - Cut time-to-first-transaction. The faster a merchant goes live, the better the product. - Build docs, sandboxes, and support materials so good that merchants barely need to email us. - Give Sales, Solutions, and Support what they need to win deals and keep merchants happy. Qualifications - 5+ years building products in payments, crypto, fintech, or B2B tech. - You've owned an API or developer platform as a product, not just run tickets for one. You get that your customers are developers, and you design for them. - You make calls with data: adoption, feedback, experiments. Gut helps. Numbers decide. - You run tight agile teams and keep delivery smooth when priorities shift. And they will. - You play well with Engineering, Commercial, Legal, and partners. You turn "what the customer needs" into "what we ship." Requirements - You know your way around custody, liquidity, stablecoins, or on/off ramps. - You're comfortable with compliance, risk, or regulatory frameworks in payments or crypto. - You've built for African, LATAM, or Asian markets. Benefits - Fair Pay + Ownership: Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Growth That’s Real: Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Work That Works For You: Fully remote forever + flexible working hours. - Time Off That Respects Life: Unlimited paid time off + Nigerian national holidays; parental, sick, compassionate, and life event leave; we show up for you. - Connection That Feels Real: Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs); regular engagement surveys; your voice matters. - Health & life coverage in select locations. Company Description At Quidax, we’re building the future of finance in Africa through crypto. You’ll have the freedom to innovate, the space to lead, and the backing to build something that truly scales.

Role Description We are looking for a Customer Success Analyst to help deliver a fast, reliable and valuable experience to Quidax customers across both fiat and crypto transactions. This role will sit at the intersection of customer support, customer operations and customer retention; helping customers resolve issues quickly, stay engaged with the product and get more value from their experience over time. This is a great role for someone who enjoys solving customer problems, spotting patterns in behavior and turning customer feedback and data into actions that improve experience, trust and long-term customer value. What You’ll Be Owning - Customer Support and Issue Resolution - Own customer issues across fiat and crypto transactions from first contact to resolution, ensuring customers get timely, accurate, and empathetic support. - Handle account, transaction, verification and product related queries while meeting agreed SLA and quality expectations. - Customer Health, Behaviour and Insight Tracking - Track recurring customer pain points, onboarding drop-offs, inactivity patterns and repeat complaints that may signal churn or low engagement. - Contribute to customer health and retention reporting by turning support interactions and behavioural patterns into useful insights. - Help the team understand which customer segments need more support, education or intervention to stay active and successful on Quidax. - Product, Operations and Customer Excellence - Surface bugs, transaction failures, recurring complaints, and operational gaps quickly and clearly to the right internal teams. - Work closely with Product, Engineering and Compliance to investigate customer-impacting issues and move them to resolution. - Contribute to improvements in workflows, support content, SOPs and internal documentation based on recurring customer friction. Biggest Challenges You’ll Tackle - Balancing fast, high-quality support with more proactive retention work in a business where customer issues can be urgent, technical and time-sensitive. - Connecting the dots between support conversations, customer behaviour and churn risk so we can understand why customers disengage and what to improve. - Helping rebuild customer confidence after poor experience by not just resolving issues, but also improving trust, clarity and the likelihood that customers continue using Quidax. Qualifications - 2+ years cognate experience in customer support, customer success or customer operations, ideally in fintech, crypto, payments, banking or other regulated environments. - Strong written and verbal communication, sound judgement and the ability to handle customer issues that require investigation, follow-through and clear coordination across teams. - A proactive customer-minded approach with the ability to spot patterns, surface useful insights, and contribute to retention, customer experience, and process-improvement work beyond day-to-day ticket handling. - You’re comfortable handling customer problems that involve transactions, timelines, multiple moving parts and some investigation. - You’re comfortable working with data; sorting, cleaning, analysing and using support or transaction data to spot patterns, track issues and support decision making. Reporting Line This role reports to the Customer Success Team Lead and works closely with the Customer Success team on support delivery, retention initiatives, issue resolution and customer experience improvements. This role will also collaborate regularly with Product, Engineering, Compliance and Operations to investigate customer issues and improve the customer journey over time. Benefits - Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Fully remote forever + flexible working hours. - Unlimited paid time off + Nigerian national holidays. - Parental, sick, compassionate, and life event leave; we show up for you. - Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs). - Regular engagement surveys; your voice matters. - Health & life coverage in select locations. How to apply: We love seeing applications that speak directly to us. It’s easy for your application to get lost in a sea of generic ones, especially when we’re sorting through dozens of them. So, make yours stand out! Show us your personality, your passion, and why you’re the perfect fit. We appreciate the effort it takes to create something thoughtful and unique. If you make it through to the next stage, you’ll likely get a pre-interview questionnaire. Think of it as a chance to show us how you’d approach the challenges we face here at Quidax. Imagine you’re already part of the team and walk us through your thought process as you tackle the problems we throw your way. What our hiring process looks like - First Connect (with the Recruiter) - 30 mins - Let’s talk about your experience, your story, and how you might fit at Quidax. - Technical Chat - 120 mins - Talk us through your real wins, show us how you solve problems, live with the team. - Culture Chat - 45 mins - You get the chance to meet members of our leadership team and y’all can talk shop. Stay connected with Quidax Follow us through LinkedIn and Instagram for the latest updates.

Role Description We're looking for a Senior Product Manager to own the Quidax API: the platform that lets other businesses plug crypto and stablecoins straight into their own products. What You'll Be Owning: - Know the platform, and the people who use it - First 90 days: get deep on the API. Make test calls, read the docs like a merchant would, and find every spot where integration hurts. - Sit with our biggest merchants. Learn why they use us. - Map the full journey, from first API call to first live transaction, and mark where people drop off. - Own the roadmap for the API - Make the calls on what we build, what we kill, and what we say no to (kindly). - Own pricing and packaging too. Price it so merchants win and so do we. - Ship it, and keep it boringly reliable - Run delivery with Engineering using rituals that stick: sprints, retros, the good stuff. - Grow the number of live merchants and the volume flowing through the API, and have the numbers to back it up. - Hold the line on uptime, security, and compliance. Merchants move their customers' money through us. "Mostly works" isn't a thing. - Make integration super simple (the Enablement bit) - Cut time-to-first-transaction. The faster a merchant goes live, the better the product. - Build docs, sandboxes, and support materials so good that merchants barely need to email us. - Give Sales, Solutions, and Support what they need to win deals and keep merchants happy. Biggest Challenges You'll Tackle: - Building one platform solid enough for a big enterprise and simple enough for a small shop. Both, at once. - Saying no. Stakeholders will ask for a hundred features. You'll ship the right ten. - Moving fast on integrations while risk and compliance stay airtight, across multiple markets and regulators. - Keeping the developer experience world-class while the roadmap, the requests, and the deadlines all pull at you. Qualifications - 5+ years building products in payments, crypto, fintech, or B2B tech. - You've owned an API or developer platform as a product, not just run tickets for one. You get that your customers are developers, and you design for them. - You make calls with data: adoption, feedback, experiments. Gut helps. Numbers decide. - You run tight agile teams and keep delivery smooth when priorities shift. And they will. - You play well with Engineering, Commercial, Legal, and partners. You turn "what the customer needs" into "what we ship." Requirements - You know your way around custody, liquidity, stablecoins, or on/off ramps. - You're comfortable with compliance, risk, or regulatory frameworks in payments or crypto. - You've built for African, LATAM, or Asian markets. Benefits - Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Fully remote forever + flexible working hours. - Unlimited paid time off + Nigerian national holidays. - Parental, sick, compassionate, and life event leave; we show up for you. - Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs). - Regular engagement surveys; your voice matters. - Health & life coverage in select locations.

Role Description We're hiring a Mid-Level Rails Engineer to work on RAMP, our on-ramp/off-ramp product that helps users move money in and out of crypto. You'll join a focused team working on the flows that matter most: deposits, withdrawals, partner integrations, and reconciliation. It's a great role for an engineer who's ready to go deeper, take real ownership, and grow fast in a fintech environment. What You’ll Be Owning - Learn & Contribute - First 30 days: Get across the RAMP codebase, understand the core flows, and ship your first meaningful fix. - By month 3: Own specific features or flows end to end, with support from the team where needed. - By month 6: Independently investigate and resolve reliability issues across deposits, withdrawals, and partner callbacks. - Reliability & Code Quality - Reduce recurring issues: stuck transactions, failed callbacks, unclear states, and manual escalations. - Improve test coverage across critical flows and leave every area you touch cleaner than you found it. - Add observability where it's weak: better logging, alerts, and debugging hooks. - Team & Growth - Participate in code reviews, share what you learn, and support engineers around you. - Grow your understanding of transaction-heavy systems: idempotency, retries, state machines, and reconciliation. Biggest Challenges You’ll Tackle - Working on backend systems where failures have real customer impact. - Debugging complex, transaction-heavy flows that aren't always well documented. - Balancing new feature work with improving the stability of existing systems. - Learning fintech and crypto infrastructure concepts on the job and applying them quickly. Qualifications - 3 to 5 years of Rails backend experience in production environments. - You write clean code, debug with patience, and care about how your work affects real users. - Comfortable with APIs, background jobs, database design, testing, and debugging. - Methodical debugger: you trace flows, read logs, and find the real root cause. - You improve code incrementally without defaulting to a full rewrite. Requirements - Bonus: Experience in fintech, payments, crypto, or on-ramp/off-ramp products. - Nice to haves: - Familiarity with transaction concepts: idempotency, retries, reconciliation, state machines. - Experience working in a remote startup environment. - Any exposure to crypto exchanges, payment providers, or bank integrations. Reporting Line You'll report to the RAMP Engineering Manager and work closely with the RAMP Product Manager on priorities, user problems, and what gets built next. Day to day, you'll collaborate with design, compliance, operations, support, and finance, as well as external partners. Benefits - Fair Pay + Ownership: Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Growth That’s Real: Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Work That Works For You: Fully remote forever + flexible working hours. - Time Off That Respects Life: Unlimited paid time off + Nigerian national holidays. - Parental, sick, compassionate, and life event leave; we show up for you. - Connection That Feels Real: Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs). - Regular engagement surveys; your voice matters. - Health & life coverage in select locations. How to apply: We love seeing applications that speak directly to us. It’s easy for your application to get lost in a sea of generic ones, especially when we’re sorting through dozens of them. So, make yours stand out! Show us your personality, your passion, and why you’re the perfect fit. We appreciate the effort it takes to create something thoughtful and unique. What our hiring process looks like - First Connect (with the Recruiter) - 30 mins: Let’s talk about your experience, your story, and how you might fit at Quidax. - Technical Chat - 120 mins: Talk us through your real wins, show us how you solve problems, live with the team. - Culture Chat - 45 mins: You get the chance to meet members of our leadership team and y’all can talk shop. Stay connected with Quidax Follow us through LinkedIn and Instagram for the latest updates.

Role Description You own the end-to-end user experience for a specific product pillar. You are the day-to-day champion for the user, working in a "squad" alongside Product Managers and Engineers. What You’ll Be Owning - End-to-End Pillar UX: Designing full user journeys, wireframes, and high-fidelity interfaces for your dedicated product area (e.g., Payments, Onboarding). - Tactical User Research: Planning, executing, and synthesizing usability studies and user interviews to validate your specific feature designs. - Handoff & Implementation QA: Creating detailed developer handoff files and performing "design QA" on builds to ensure the final product matches the intent. - Design System Contribution: Actively identifying gaps in our component library and proposing new patterns to the Design System Lead. Qualifications - Problem Solver: You start with the user problem, not the solution, and can iterate quickly through wireframes to find the best flow. - Visual Executor: You have a high bar for UI design and can deliver polished, high-fidelity designs that are ready for production. - User Advocate: You are comfortable running your own usability tests and using that feedback to kill your "darlings" for the sake of the user. - Autonomous Worker: You thrive in a squad environment and can manage your own time and priorities alongside a Product Manager. Reporting Line You'll report to the Interaction & Design System Lead (or a Design Manager within a specific pillar). Benefits - Fair Pay + Ownership: Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Growth That’s Real: Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal Development Fund: Courses, books, conferences; study leave so you can keep learning. - Work That Works For You: Fully remote forever + flexible working hours. - Time Off That Respects Life: Unlimited paid time off + Nigerian national holidays; parental, sick, compassionate, and life event leave. - Connection That Feels Real: Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs); regular engagement surveys. - Health & Life Coverage: In select locations. How to Apply We love seeing applications that speak directly to us. It’s easy for your application to get lost in a sea of generic ones, especially when we’re sorting through dozens of them. So, make yours stand out! Show us your personality, your passion, and why you’re the perfect fit. We appreciate the effort it takes to create something thoughtful and unique. What Our Hiring Process Looks Like - First Connect (with the Recruiter): 30 mins - Let’s talk about your experience, your story, and how you might fit at Quidax. - Technical Chat: 60+ mins - Talk us through your real wins, show us how you solve problems, live with the team. - Culture Chat: 45 mins - You get the chance to meet members of our leadership team and y’all can talk shop.

Role Description We're hiring a Mid-Level Java, Spring Boot Engineer to work on the core backend systems that power how customers trade, move money, and interact with the Quidax platform. You'll join a team working on the flows that matter most: APIs, integrations, transaction processing, and the reliability of systems that real customers depend on every day. It's a great role for an engineer who's ready to go deeper, take real ownership, and grow fast in a fintech environment. What You’ll Be Owning - Learn and Contribute - First 30 days: Get across the core Java/Spring Boot services, understand the critical flows, and ship your first meaningful fix. - By month 3: Own specific features or services end to end, with support from the team where needed. - By month 6: Independently investigate and resolve reliability issues across APIs, integrations, and transaction flows. - Reliability and Code Quality - Reduce recurring issues: stuck transactions, failed callbacks, unclear states, and manual escalations. - Improve test coverage across critical flows and leave every area you touch cleaner than you found it. - Add observability where it's weak: better logging, alerts, and debugging hooks. - Team and Growth - Participate in code reviews, share what you learn, and support engineers around you. - Grow your understanding of transaction heavy systems: idempotency, retries, state machines, and reconciliation. Biggest Challenges You’ll Tackle - Working on backend systems where failures have real customer impact. - Debugging complex, transaction heavy flows that aren't always well documented. - Balancing new feature work with improving the stability of existing systems. - Learning fintech and crypto infrastructure concepts on the job and applying them quickly. Qualifications - 3 to 5 years of Java Spring Boot backend experience in production environments. - You write clean code, debug with patience, and care about how your work affects real users. - Comfortable with REST APIs, background jobs, database design, testing, and debugging. - Methodical debugger: you trace flows, read logs, and find the real root cause. - You improve code incrementally without defaulting to a full rewrite. Requirements - Bonus: Experience in fintech, payments, crypto, or transaction heavy backend systems. - Nice to Haves: - Familiarity with transaction concepts: idempotency, retries, reconciliation, state machines. - Experience working in a remote startup environment. - Any exposure to crypto exchanges, payment providers, bank integrations, or Java ecosystem tools like Kafka, JPA, or Hibernate. Reporting Line You'll report to the Engineering Manager and work closely with senior engineers, product managers, and mobile and frontend teammates to build and strengthen the core of our backend infrastructure. Benefits - Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Fully remote forever + flexible working hours. - Unlimited paid time off + Nigerian national holidays. - Parental, sick, compassionate, and life event leave; we show up for you. - Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs). - Regular engagement surveys; your voice matters. - Health & life coverage in select locations. How to apply We love seeing applications that speak directly to us. It’s easy for your application to get lost in a sea of generic ones, especially when we’re sorting through dozens of them. So, make yours stand out! Show us your personality, your passion, and why you’re the perfect fit. We appreciate the effort it takes to create something thoughtful and unique. What our hiring process looks like - First Connect (with the Recruiter) - 30 mins: Let’s talk about your experience, your story, and how you might fit at Quidax. - Technical Chat - 120 mins: Talk us through your real wins, show us how you solve problems, live with the team. - Culture Chat - 45 mins: You get the chance to meet members of our leadership team and y’all can talk shop.

Role Description We’re looking for an Infrastructure Security Engineer who can build and maintain a strong security posture in a fast-moving, high-stakes financial environment, without slowing the business down. This role sits at the heart of our security infrastructure, protecting our cloud, networks, endpoints, databases, code repositories, data stores and critical systems. You’ll be designing, re-designing, fixing and continuously improving how we secure Quidax at scale. If you’re the kind of person who is very meticulous, process oriented, logical and has a passion for cybersecurity technologies — you’ll fit right in. What You’ll Be Owning - Security Solutions Configuration, Review & Optimization - Within 30 days: Configuration of various security solutions including network firewalls, Endpoint Detection & Response Solutions, Web Application Firewalls, Cloud Native Application Protection Platforms, Security Incident and Event Management, Security Orchestration Automation and Response Solutions, Identity Provider Solutions and Threat Management Solutions. - Within 90 days: Reviews & optimizations on various security solutions in compliance with established policies. - Within 180 days: Review current security baselines & ensure alignment of all security and technology solutions with the security baselines across all environments (cloud, endpoints, network). - Audits & Compliance Reviews - Within 90 days: Adequate understanding of existing infrastructure security systems and technical controls to provide insights during audits & compliance reviews. - Within 180 days: Assume roles within our Information Systems Management framework. - Within 180 days: Work with Governance Risk & Compliance to close audit findings quickly and effectively. - Access Control Management & Optimization - Within 30 days: Understanding of Access Control Policies, Processes & Technologies. - Within 30 days: Ownership of Access provisioning, decommissioning & access management optimization. - Within 90 days: Conduct a review of the current access management system, identify gaps and propose recommendations. - Vulnerability Management - Within 60 days: Establish a consistent vulnerability management process across infrastructure and endpoints. - Within 90 days: Ensure all critical & high vulnerabilities have clearly defined remediation SLAs. - Within 180 days: Reduce monthly recurring unremediated vulnerabilities by 40%. - Provide clear, actionable vulnerability remediation guidance to Engineering and DevOps teams. - Security Monitoring, Detection & Response - Within 30 days: Review and be conversant with existing SIEM architecture. - Within 90 days: Identify and document all areas of improvement in our security event monitoring. - Within 180 days: Start implementing all areas of improvement to log aggregation, security event analysis and alerting. - Within 90 days: Identify new playbooks for automated incident response in the SOAR and document the recommendations. - Within 12 months: Implement the playbooks for automated incident response recommendations in the SOAR. - Continuously improve detection coverage and incident response automation and orchestration across cloud, endpoints, and network layers. - Secure Cloud & Network - Within 30 days: Review and understand services & configurations across multi-cloud platforms. - Within 60 days: Administer security policies & security services across multi-cloud platforms. - Within 60 days: Partner with relevant Engineering teams to ensure security is embedded in infrastructure design and configuration from day one. - Security Operations & Automation - Within 30 days: Review existing automations, test them out and identify areas for optimization/improvement. - Within 180 days: Automate at least 30% of repetitive security operations tasks. - Continuously evaluate and implement new tools that improve detection, prevention, or efficiency. - Continuously improve security policies and enforcement mechanisms. - Cross-Functional Security Enablement - Work closely with Engineering, DevOps, and Product teams to embed security into workflows. - Provide hands-on guidance during system design, deployments, and incident response. - Promote strong security practices across the company — not just enforce them. Biggest Challenges You’ll Tackle - Figuring out how multiple vendor technologies have been stitched together while having to actively carry out security operation tasks in a new environment. - Balancing operational security tasks with long-term architecture improvements. - Integrating with the relevant Engineering teams to ensure security is embedded into our engineering processes. - Driving security adoption across teams that just want to ship. - Securing a fast-growing crypto infrastructure without slowing down product delivery. - Reducing alert fatigue while improving real threat detection. - Keeping up with evolving threats in the cloud, blockchain and global security landscape. Qualifications - You’ve secured cloud-native environments in a real-world, high-scale setup. - You can go from “there’s a problem” to “here’s the fix” to “it’s deployed” without hand-holding. - Strong hands-on experience with SIEM, EDR, firewalls, WAFs, vulnerability management tools, Networking concepts (routing, NAT, segmentation, access control), Cloud security (IAM, logging, monitoring, secure configs). - You can break down complex systems into their simple parts and understand how they are built, how they break and what it takes to fix them. - You’re proactive and detail-oriented. - You can collaborate with engineers and influence decisions without being the “security police.” - You enjoy Cybersecurity and have a passion for learning about new Technologies. - You are committed to continuous development and search out the latest vulnerabilities, attack vectors and security solutions. Nice-to-Haves - Experience with implementing security solutions & driving secure processes in fintech, blockchain, or financial systems. - Experience writing scripts & automating workflows with technologies like Python, Ansible & Terraform. - Experience with implementing DevSecOps processes and technologies including access control, key management, policy gates etc. - Understanding of blockchain security concepts. - Understanding of AI, its risks, AI security and AI security solutions. - Certifications like CCSP, CEH, CCNP, PCNSE, Security+, AWS. Reporting Line You’ll report directly to the Chief Information Security Officer (CISO) and work closely with other units in the Information Security team including GRC, Application Security, IT. You’ll also be close buddies with the Engineering team especially the Engineering Platform & DevOps teams as we partner with them to ensure secure Engineering processes and implementations are in place. Why Quidax At Quidax, we’re building the future of finance in Africa through crypto. You’ll have the freedom to innovate, the space to lead, and the backing to build something that truly scales. If you’re ready to build an engineering org that delivers excellence at scale, let’s talk. What’s In It For You When you join Quidax, you’re not just taking a job, you’re jumping into a community that’s bold, remote-first, and building for the future.

Role Description As a QA Engineer at Quidax, you will be responsible for ensuring the quality, reliability, and stability of our products throughout the development lifecycle. You will work closely with engineers, product managers, and designers to validate requirements, test features of moderate complexity, and identify defects early. In this role, you will apply established QA practices, tools, and processes to execute manual and automated tests, perform API testing, and assess quality risks. You are expected to work independently on well-defined tasks, exercise sound judgement within existing procedures, and continue developing your technical and professional QA expertise while contributing consistently to high-quality releases. What You’ll Be Owning - Test Execution & Product Quality - First 90 days: - Get fully familiar with our product, architecture, and release cycles. - Design and execute test cases, plans, and scenarios for features. - Perform manual testing across web and/or mobile, including functional, regression and exploratory testing. - Identify quality risks, edge cases, and gaps in requirements. - Within 6 months: - Own end-to-end testing for features and releases with minimal supervision. - Consistently improve release confidence through solid test coverage. - Proactively surface risks early and influence better product decisions. - Test Automation & Efficiency (Cypress, Appium with Java) - First 90 days: - Contribute to automation by writing and maintaining automated test cases using Cypress for web and Appium (Java) for mobile. - Get familiar with existing automation frameworks, tools, and pipelines. - Within 6 - 12 months: - Increase automated test coverage by prioritising high-value scenarios. - Execute automated test suites, analyze failures, and work with engineers to resolve issues. - Contribute to improving automation standards and practices across the team. - API Testing & Defect Management (Postman) - First 90 days: - Perform API testing using Postman to validate backend services and integrations. - Identify, document, and track defects clearly. - Within 6 months: - Validate bug fixes and ensure issues are resolved before release. - Improve defect reporting quality and help reduce regressions. - Catch integration issues early before they impact our merchants. - Collaboration & QA Excellence - First 90 days: - Collaborate with engineers, product managers, and designers. - Participate in sprint ceremonies and contribute quality-focused input. - Within 6 - 12 months: - Provide clear, actionable feedback to improve product and team execution. - Proactively identify gaps in QA processes and help improve testing practices. Biggest Challenge You’ll Tackle - Shipping fast without breaking things - Building quality into a system that’s still evolving - Catching issues before users do - Growing automation in a real-world codebase - Making quality a team responsibility, not just yours - Testing across layers that don’t always behave nicely together Qualifications - 3+ years of experience as a Quality Assurance Engineer, with a track record of testing real products end to end, not just following test cases. - You think like a user and an engineer. You’re curious enough to explore edge cases, and technical enough to understand what’s happening under the hood. - You have hands-on experience with automation using tools like Cypress and Appium (Java), and you know when automation adds value. - You’ve worked with APIs and can confidently test them using tools like Postman, validating data, integrations, and failure scenarios. - You have experience working in an Agile/Scrum development environment, actively contributing to sprints, planning, and delivery. - You don’t wait for perfect requirements. You ask questions, challenge assumptions, and fill in the gaps to make sure quality doesn’t slip through. - You’re comfortable working in fast-moving teams where priorities shift, and you can still keep quality high without becoming a bottleneck. - You care about clarity. Whether it’s a bug report, a test case, or feedback in a sprint, your work helps others move faster, not slower. - You take ownership of quality. Not just finding bugs, but improving how the team builds, tests, and ships over time. Nice to have: - Familiarity with CI/CD pipelines and how automated tests fit into them. - Experience working in fintech, crypto, or other high-reliability environments. Reporting Line You’ll report to the QA Engineering Manager and work closely with engineers on a day-to-day basis to ensure features are built and shipped with quality in mind. You’ll collaborate regularly with Product Managers and Designers during planning and delivery, helping shape requirements, identify risks early, and improve overall product quality. You’ll be an active part of the engineering team’s sprint rituals and have a strong voice in quality-related decisions, from test coverage to release readiness. Benefits - Competitive salary based on your skills and experience; annual merit-based reviews to keep your growth visible and rewarded. - Annual performance reviews + clear promotion cycles; recognition for great work, from shoutouts to milestone rewards. - Personal development fund (courses, books, conferences); study leave so you can keep learning. - Fully remote forever + flexible working hours. - Unlimited paid time off + Nigerian national holidays. - Parental, sick, compassionate, and life event leave; we show up for you. - Quarterly remote team hangouts + annual offsite; interest-based communities (SIGs). - Regular engagement surveys; your voice matters. - Health & life coverage in select locations. How to apply: We love seeing applications that speak directly to us. It’s easy for your application to get lost in a sea of generic ones, especially when we’re sorting through dozens of them. So, make yours stand out! Show us your personality, your passion, and why you’re the perfect fit. We appreciate the effort it takes to create something thoughtful and unique.