Colibrix One

Role Description We're seeking an experienced Go Engineer to join our team and contribute significantly to our payment gateway product. The ideal candidate will bring deep technical expertise, a collaborative mindset, and the ability to influence and mentor team members through knowledge and experience rather than formal authority. About the project: - Payment gateway solutions - fintech product that securely connects merchants and financial institutions to process online payments in real time. - Handles transaction routing, encryption and tokenization, fraud and risk checks, and integration with acquirers, payment aggregators, and alternative payment methods. - Supports high availability, scalability, and compliance with PCI DSS and PSD2. Tech stack: - Go - PostgreSQL/MySQL - MongoDB/Redis - Kafka - NATS - REST/gRPC - AWS - GitLab CI/CD - Prometheus - Grafana Key responsibilities: - Design and develop Go-based services for the payment gateway and related fintech systems, focusing on stability, fault tolerance, and correct handling of financial operations. - Translate business requirements into clear technical specifications and propose concrete solutions at the service and module level, including API design, data models, and integrations with external providers. - Build solutions in compliance with security requirements, including PCI DSS, proper handling of sensitive data, and secure inter-service communication. - Analyze and optimize service performance, including code profiling, concurrency handling, and efficiency of data storage and network interactions. - Participate in the architecture of microservices: service boundaries, communication patterns, load balancing, error handling, queues/streaming, and data storage approaches. - Produce maintainable, testable code with appropriate unit and integration test coverage, following team development standards. - Participate in code review as part of the development process: evaluate implementations, identify issues, and provide constructive feedback aligned with technical requirements. - Contribute to technical discussions by offering concrete, practical solutions within the current architecture and development processes. Qualifications - 3–5 years of Go development experience focused on backend systems, and around 5 years of experience working with fintech applications. - Understanding of distributed systems, microservices architecture, and API design, including REST/RPC transports. - Experience working with SQL and NoSQL databases, message brokers (Kafka, NATS), and caching systems. - Familiarity with CI/CD practices and tools, preferably GitLab. - Experience working with the AWS cloud platform. - Ability to contribute expertise and collaborate with the team on technical solutions. - Strong communication skills and the ability to explain complex technical ideas to colleagues with varying levels of technical background. - Fluency in written and spoken English and Russian. - Experience in the fintech domain. - Security-by-design mindset: ability to design solutions with security considerations built in at every stage. - Understanding of regulatory requirements in the fintech space (e.g., PCI DSS, GDPR). - Experience in performance optimization and building high-availability systems. - Experience with observability tools: logging, metrics, tracing (Prometheus, Grafana, OpenTelemetry). - Experience integrating with external payment providers, processors, or anti-fraud systems. Benefits - Opportunity to shape the future of fintech solutions within a growing company. - Collaborative, horizontal team structure that values your expertise and ideas. - Continuous learning and development opportunities to enhance your skills and career growth. - Competitive salary and benefits package. - Flexible work arrangements to support work-life balance.

Role Description We write detailed technical specs. Your job is to turn them into working product by orchestrating AI coding agents — and to own the quality of everything that ships. Our toolchain is Claude Code with custom skills on top of a structured spec pipeline; if you bring approaches that have worked for you, we are happy to compare and adopt what proves effective. You will work directly with the coordinators of this direction: the agentic development process is already up and running, and you will be its first dedicated engineer. Responsibilities - Take a spec and drive it to production: clarify ambiguities with the spec author instead of guessing, decompose work into small verifiable increments, execute via AI agents. - Design verification before generation: acceptance criteria, tests, invariants and API contracts that make agent output checkable. - Review and accept agent-generated code: catch silent scope creep, tests fitted to bugs, hallucinated APIs, code that passes but does the wrong thing. - Step in and code by hand when an agent hits a dead end (mostly Go). - Build and tune the agent toolchain: skills, prompts, guardrails, workflows — and measure what matters: first-pass acceptance rate, rework volume, spec-to-production cycle time. Qualifications - 3–5 years of professional software engineering experience. - Strong Go backend engineering: services, APIs, concurrency, data consistency — this is where mistakes cost the most (our stack: MongoDB, NATS, gRPC). - Comfort with event-driven architecture: any message broker (we use NATS), idempotent consumers, outbox, sagas/compensations, retries with DLQ, eventual consistency. - Working React/TypeScript: enough to deliver and review SPA features built on top of our APIs. - Payments/fintech experience is a strong plus: idempotency, transactional integrity, money handling, audit trails; subscriptions and recurring billing — an even stronger plus. - Proven ability to read, debug and refactor code you didn't write — most of this role is review and acceptance, not typing. - Hands-on production experience with AI coding agents — not demos. - Discipline to work from specs and keep requirement → code → test traceability. - Growth path: today you own delivery on a dedicated project; as the agentic approach scales across the company, you help engineers from our classic development track adopt it. Requirements - Who this is NOT for: engineers who want to hand-write most of their code, or who accept generated code they haven't tried to break. Benefits - Opportunity to shape the future of fintech solutions within a growing company. - Collaborative, horizontal team structure that values your expertise and ideas. - Continuous learning and development opportunities to enhance your skills and career growth. - Competitive salary and benefits package.

Role Description As a Program Coordinator, you will support cross-functional initiatives and releases by maintaining accurate project information, tracking deadlines and dependencies, and ensuring clear communication across teams. You will facilitate key meetings, document decisions and action items, prepare status reports, and escalate risks that may affect delivery timelines or quality. Responsibilities - Regularly collect and consolidate information on task and initiative progress - Review statuses for completeness, accuracy, and consistency - Keep JIRA structures, tasks, timelines, ownership, and dependencies up to date - Maintain key program and project artifacts in Confluence - Identify deviations from agreed plans and initiate corrective follow-up actions - Remind responsible owners about critical deadlines and outstanding commitments - Organize and facilitate working meetings, including status meetings, dependency syncs, and release-readiness sessions - Document decisions, maintain action-item logs, and track actions through completion - Prepare regular status reports for program stakeholders and management - Visualize key metrics, progress indicators, risks, and delivery trends - Participate in release planning and coordination of major launches - Maintain a dependency map across teams, systems, and workstreams - Track release readiness, including critical cross-team and technical dependencies - Identify and escalate risks that may threaten release timelines, scope, or quality Qualifications - 2+ years of experience in Program Coordination, Program Support, PMO, Delivery Coordination, or a similar role - Practical experience working with JIRA and Confluence - Strong organizational skills and the ability to manage multiple workstreams, deadlines, and stakeholders - Experience collecting, validating, and consolidating project or program statuses - Ability to identify inconsistencies, missing information, delays, and potential delivery risks - Experience organizing and facilitating meetings with cross-functional teams - Strong skills in documenting decisions, action items, risks, dependencies, and agreements - Ability to prepare clear and concise management reports and presentations - Proactive communication style and confidence in following up with responsible stakeholders - Ability to work effectively in a fast-paced and changing environment Benefits - Opportunity to shape the future of fintech solutions within a growing company - Collaborative, horizontal team structure that values your expertise and ideas - Continuous learning and development opportunities to enhance your skills and career growth - Competitive salary and benefits package

Role Description We're looking for a Transaction Monitoring Specialist with strong analytical skills to detect fraud, assess risk, and ensure compliance with AML/CTF regulations and card scheme rules. You will monitor transactions in real time, investigate suspicious activity, and support improvements in monitoring processes. Key Responsibilities - Monitor deposits and review daily fraud reports to ensure merchant compliance with Visa and Mastercard programs - Conduct real-time transaction monitoring for both business and individual clients - Analyze large volumes of transaction data to detect suspicious patterns and potential fraud - Perform periodic evaluations of client accounts and website functionality, including test transactions, to ensure compliance - Investigate merchants and portfolios to assess risk, ensure compliance, and detect fraudulent or illegal activities - Identify potential money laundering, terrorist financing, and sanctions evasion scenarios - Collect and manage additional client data related to completed transactions - Address operational monitoring issues promptly, escalating and reporting suspicious activities as needed - Ensure all client transactions comply with AML/CTF procedures and guidelines - Assist colleagues from other departments with AML/CTF-related matters - Provide insights and recommendations to enhance transaction monitoring efficiency Qualifications - Minimum of 2 years of experience in AML - Strong understanding of AML/CTF regulations and industry best practices - Familiarity with customer due diligence (CDD) and enhanced due diligence (EDD) procedures - Familiarity with payment screening processes - Excellent analytical and problem-solving skills, with strong attention to detail - Ability to handle confidential information - Proficiency in Microsoft Office and AML software/tools - Certification in AML/CTF or a related field is a plus - Experience working in a fast-paced environment - Motivation to learn and contribute to ongoing process improvements - Strong written communication skills, with the ability to convey complex information clearly - Fluency in English (additional languages are considered an asset) Benefits - Opportunity to shape the future of fintech solutions within a growing company - Collaborative, horizontal team structure that values your expertise and ideas - Continuous learning and development opportunities to enhance your skills and career growth - Competitive salary and benefits package

Role Description We are looking for a creative and detail-oriented Digital Designer to join our team. In this role, you will design engaging digital experiences and marketing assets, including: - Social media content - Landing pages - Presentations - Simple animations You will collaborate closely with marketing and product teams, using modern design tools and AI-powered solutions to bring ideas to life. Qualifications - 2+ years of experience in digital and graphic design for web and marketing materials - Proficiency with design tools including Adobe Illustrator, Adobe Photoshop, Adobe Acrobat, and Figma - Familiarity with AI-powered design and productivity tools - Understanding of typography, layout, color theory, and branding - Ability to create clean, user-friendly interfaces - Basic knowledge of animation and motion design - Strong attention to detail and communication skills - Ability to manage multiple tasks and meet deadlines - Portfolio demonstrating relevant design work Requirements - Experience with prototyping tools (Nice to Have) - Basic knowledge of HTML/CSS (Nice to Have) - Experience with video editing or motion graphics tools (Nice to Have) Benefits - Opportunity to shape the future of fintech solutions within a growing company - Collaborative, horizontal team structure that values your expertise and ideas - Continuous learning and development opportunities to enhance your skills and career growth - Competitive salary and benefits package

Role Description As a Chargeback Specialist, you will manage the end-to-end card dispute process within an acquiring environment under Visa and Mastercard schemes. You will analyze transactions, prepare representments, and collaborate with banks and merchants to resolve disputes and improve win rates. The role also involves monitoring chargeback trends across a diverse merchant portfolio, supporting risk mitigation efforts, and ensuring compliance with scheme rules in a fast-paced fintech setting. Key Responsibilities - Handle incoming chargebacks in accordance with Visa and Mastercard scheme rules - Manage the full dispute lifecycle: first chargeback, representment, pre-arbitration, arbitration, and collaboration / pre-dispute cases - Analyze transaction data to prepare compelling representments and supporting documentation - Manage disputes across a diverse merchant portfolio spanning low - to high-risk profiles and varied business models, including one-off and recurring billing flows - Tailor representment and dispute strategies to the merchant's risk profile and transaction model - Monitor chargeback ratios across merchant activity and identify patterns or spikes that require further investigation - Track merchant performance against scheme monitoring thresholds (Visa VAMP, Mastercard ECM/EFM) and flag emerging risk - Leverage dispute prevention and deflection tools (Ethoca Alerts, Verifi Order Insight / CDRN, Visa RDR) to reduce dispute volume - Collaborate with internal teams - Risk, Settlement, and Compliance - Communicate with issuer banks, acquiring banks, processors, and merchants to resolve dispute-related queries - Continuously evaluate dispute procedures and suggest improvements to increase win rates - Work to strict scheme response deadlines and SLAs without compromising quality - Stay up to date with scheme rules, regulatory updates, and industry best practices in dispute management - Perform any other related duties or responsibilities as assigned Qualifications - Minimum 2 years of experience in dispute management, preferably within a PSP, EMI, or acquiring bank - Hands-on experience managing chargebacks for merchants across the full risk spectrum, from low-risk to high-risk verticals - Strong understanding of Visa and Mastercard scheme rules and the end-to-end dispute process - Experience with dispute prevention / deflection tools (Ethoca, Verifi Order Insight / CDRN, RDR) is a strong advantage - Awareness of scheme monitoring programs and thresholds (VAMP, ECM/EFM) and how dispute outcomes affect portfolio ratios - High attention to detail with strong organizational and documentation skills - Ability to analyze transaction flows, spot anomalies, and present findings clearly - Comfortable working in a fast-paced environment and managing multiple cases simultaneously to strict deadlines - Excellent written communication skills in a formal and professional style - Strong problem-solving mindset and ability to work independently while remaining aligned with team goals and guidance - Fluency in English and Russian (additional languages are considered a plus) - Proficiency in Microsoft Office, with strong expertise in Excel highly desirable - Higher education in banking or economics, and experience in a regulated financial environment, are considered a plus Benefits - Opportunity to shape the future of fintech solutions within a growing company - Collaborative, horizontal team structure that values your expertise and ideas - Continuous learning and development opportunities to enhance your skills and career growth - Competitive salary and benefits package

Role Description We are looking for a creative and detail-oriented Digital Designer to join our team. In this role, you will design engaging digital experiences and marketing assets, including: - Social media content - Landing pages - Presentations - Simple animations You will collaborate closely with marketing and product teams, using modern design tools and AI-powered solutions to bring ideas to life. Qualifications - 2+ years of experience in digital and graphic design for web and marketing materials - Proficiency with design tools including Adobe Illustrator, Adobe Photoshop, Adobe Acrobat, and Figma - Familiarity with AI-powered design and productivity tools - Understanding of typography, layout, color theory, and branding - Ability to create clean, user-friendly interfaces - Basic knowledge of animation and motion design - Strong attention to detail and communication skills - Ability to manage multiple tasks and meet deadlines - Portfolio demonstrating relevant design work Requirements - Experience with prototyping tools (Nice to Have) - Basic knowledge of HTML/CSS (Nice to Have) - Experience with video editing or motion graphics tools (Nice to Have) Benefits - Opportunity to shape the future of fintech solutions within a growing company - Collaborative, horizontal team structure that values your expertise and ideas - Continuous learning and development opportunities to enhance your skills and career growth - Competitive salary and benefits package