Smart company cards. Automated expense reports. Out-of-pocket expenses. One solution for all your company spending.
Senior Backend Engineer
Location
Denmark
Posted
45 days ago
Salary
0
Seniority
Senior
Job Description
Senior Backend Engineer
Pleo
Messy spend management is tricky business. And tedious processes are a lose-lose situation for all involved, not just finance. At Pleo, we're changing that. We build spend solutions that make managing money seamless, empowering, and surprisingly effective for finance teams and employees alike - with a vision to help all businesses ‘go beyond’. The word ‘Pleo’ actually means ‘more than you’d expect’, and living by that mantra has been the secret to our success over the last 10 years. Now, we’re at a pivotal moment in our journey; every move we make has a direct impact on our 40,000+ customers, our business, and our collective success. We need people who take pride in uncovering customer needs, who turn complex problems into simple solutions, challenge the way things are done (respectfully), and always aim high. With great ambitions driving us forward, we can’t say we’ve got this whole thing figured out. And frankly, that’s half the fun! What we can say is that we’re a driven, progressive, and, importantly, a kind bunch of 850+ people from over 100 nationalities, all committed to delivering the future of business spending, together. About the role We're looking for a Senior Backend Engineer to join our team at Pleo. In this role, you'll help build and scale our backend systems and be part of exciting projects as we continue to grow our product and service offerings. If you're passionate about solving complex technical challenges and want to work in a culture that values transparency, collaboration, and a deep commitment to innovation then this role is for you. What you’ll be doing As a Senior Backend Engineer, you will: - Lead initiatives to design, build, and maintain scalable microservices primarily using Kotlin. - Collaborate with cross-functional teams to develop innovative solutions across Platform, Services, SMB, and other domains. - Analyze system performance and implement optimizations to ensure high reliability and scalability. - Participate in code reviews, post-mortems, and provide mentorship to other engineers. - Proactively address technical debt and guide the team through technical challenges and migrations. What you bring You'll thrive in this role if you have: - Expertise in server-side languages, especially Kotlin, and experience with distributed systems, microservices, and cloud environments (e.g., AWS, Kubernetes). - Proficiency with relational databases like PostgreSQL, testing frameworks (e.g., JUnit, Testcontainers), and observability tools like Grafana. - Strong problem-solving skills and a collaborative mindset to mentor and upskill your teammates. - A proven ability to lead large projects, manage ambiguity, and maintain high standards for code quality and reliability. - A passion for innovation and driving impactful solutions within a fast-paced scale-up environment. Who you’ll be working with and reporting to You’ll report to our Engineering Manager and work closely with cross-functional product teams, including Credit , Platform, Partnerships, SMB and more. Our collaborative team is dedicated to building world-class solutions, and you’ll have the opportunity to partner with other departments to drive success. While the specific team you'll be working with will be decided later, our hiring process remains streamlined and consistent across all roles. This allows us to evaluate your skills and potential, ensuring a great fit for the team you eventually join. No matter which domain you land in, you will be part of a dynamic, collaborative environment where you'll tackle complex challenges, build reusable components, and contribute to shaping the future of our product. How you’ll develop in this role In your first six months at Pleo, you’ll: - Lead backend initiatives to improve system performance and scalability.Collaborate with teams to drive innovation in product and infrastructure.Grow your expertise in Kotlin and distributed systems while mentoring other engineers.Contribute to shaping the future of our product as Pleo scales globally. - We’re committed to supporting your growth, whether through taking on larger projects, stepping into leadership roles, or expanding your technical expertise. Check out our Engineering Hiring Blog Post to get an in-depth overview of our hiring process and what to expect. Enjoy the reading! Show me the benefits! - Your own Pleo card (no more out-of-pocket spending!) - Lunch is on us for your work days - enjoy catered meals or receive a lunch allowance based on your local office 🍜 - Comprehensive private healthcare - depending on your location, coverage options include Vitality, Alan or Médis - We offer 25 days of holiday + your public holidays - For our Team, we offer both hybrid and fully remote working options - Option to purchase 5 additional days of holiday through a salary sacrifice - We use MyndUp to give our employees access to free mental health and well-being support with great success so far ❤️🩹 - Paid parental leave - we want to make sure that we're supportive of families and help you feel that you don't have to compromise your family due to work 👶 About your application English first. Since it's our company language, please submit your application in English. You’ll be using it a lot if you join us. A fair look for everyone. Our talent team reads every single application to ensure the process is fair. To keep things running smoothly, we only accept applications through our system—our support team can’t pass on calls or emails. Diversity drives us. We can only reach our goals if our team reflects the world around us. That starts with you hitting apply, even if you don't tick every single box. We encourage people from all backgrounds and experiences to join us. Interview at your best. We want you to feel comfortable throughout the process. If you have any accessibility requirements or need a specific format, email belonging@pleo.io. We’ll design a process that works for you. Your data is safe. When you apply, we process your personal data as a data processor. For more information on how Pleo processes personal data, read our Privacy Policy here. Applying for multiple roles? Nothing is stopping you, and we assess every role independently. However, we do look for alignment, so make sure you can explain why your interest and experience are right for each specific role. Reapplying. If you’re applying for the same role again, please wait six months from your last decision before hitting submit.
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About Allocate Allocate is transforming private market investing by enabling RIAs and family offices to seamlessly discover, model, and manage their private market exposure. Our platform combines curated fund and co-investment opportunities with institutional-grade infrastructure. Through a single, data-rich digital experience, clients access top-tier opportunities across venture capital, private equity, private credit, and other private asset classes—backed by powerful tracking, analytics, and administration tools. About the Role Allocate is looking to add a new Senior Software Engineer II - Backend to the team! There’s a lot for us to build, and we need a developer with a broad skillset who can jump right in to help us lay the technical foundation for the company’s future. Essential Responsibilities and Duties - Design & implement new features and endpoints in backend APIs - Design & implement schema changes to support these new features - Participate in an Agile-based development environment - Work as part of an independent, cross-functional squad to deliver critical features for our platform - Build high-quality, scalable, and testable code that will help drive engineering maturity and efficiency Must Have Experience - 5+ years of object-oriented software engineering experience (C#, Java, etc) - 5+ years of experience with SQL-based databases (Postgres ideally) - Must understand how to design a schema that will result in a performant application (for example: when to add an index, and to which fields) - 3+ years C# experience - 2+ years experience developing REST APIs - Proficiency with Git and version control systems in general - Hands-on experience with AI-assisted development tools such as Claude Code, OpenAI’s Codex, or Cursor, and a demonstrated ability to continuously evaluate and incorporate new tools into your workflow as they emerge Nice to Haves - ASP.NET Web API development experience - Familiarity with basic ORM concepts (such as Dapper, Entity Framework, etc) - Familiarity with FluentMigrator - Docker and Docker Compose experience - AWS ECS/EKS experience Education - Bachelor’s degree in Computer Science, similar technical field of study, or equivalent practical experience Essential Values & Culture - Providing our clients with a world-class experience is our number one priority. We obsessively search for ways to improve the experience for our clients and partners. This requires extraordinary response times, proactivity, and ensuring that everything we do, from product strategy to offline communications is a top-tier client experience. - Challenge convention: Instead of detailing all the reasons why an idea may not work, we constantly question things to determine how a viable idea may be put into motion. - Commitment to continuous improvement: We find ways to personally scale each day by pushing ourselves up the learning curve. - Meritocracy, not politics: We place the utmost value on results and rewards through merit, not reward actions driven by political agendas or behavior. - Civil Discourse is embraced: We believe open, intellectually curious conversations are required to consistently arrive at the best decisions. Respect is paramount in our dealings with one another, but our mission is always to get the right answer collectively, not to be right. - Embrace technological change: We adopt tools and techniques that make us faster, smarter, and better. We stay open to innovation, especially around AI and automation, and drop outdated methods without hesitation. This includes actively integrating AI-assisted development tools into your daily workflow and staying current as the landscape evolves. Complacency kills progress, we value adaptability and curiosity. Additional Details: - Fully Remote Position - Travel required for offsites - An in-person interview may be required during the interview process - A Broadband internet connection required - Seniority: Mid-level - Location: All I-9 eligible candidates will be considered - Salary: $145-175K base, competitive early-stage fintech startup package (salary + bonus + equity) - Benefits: Medical, dental, and vision. 401(k), and responsible vacation time (PTO) - Employment: Full-time - Compliance with Allocate's Code of Ethics is a given for this role. The base pay offered will be determined based on the candidate's experience, location, skills, training, certifications, education, internal equity, and market data. Total compensation may also include a discretionary performance-based bonus. We do not anticipate that candidates hired will begin at the top of the range, though this may occur on a case-by-case basis.
About us Owkin is an AI company on a mission to solve the complexity of biology. It is building the first Biology Super Intelligence (BASI) by combining powerful biological large language models, multimodal patient data, and agentic software. At the heart of this system is Owkin K, an AI copilot and its new LLM fine-tuned on biology called Owkin Zero, used by researchers, clinicians, and drug developers to better understand biology, validate scientific hypotheses, and deliver better diagnostics and therapies faster. Position is based in our Paris office or remotely in France, UK, Germany. Please submit your CV in English About the role: As a Senior Data Backend Engineer, you will build the world leading Agentic AI product for biomedical researchers by combining robust engineering practices with cutting-edge AI technologies. You'll be working on a real-time system that integrates LLMs, tool-calling, to explore public biology knowledge, Owkin proprietary data and client data. More specifically the role is focused on designing and optimising data workflows (storage, querying, analytics, etc) for agentic capabilities. In particular, you will: - Collaborate within a multi-disciplinary team of product managers, designers, software engineers, data engineers and machine learning and biomedical scientists. - Design, build, and maintain scalable, reliable data-intensive AI systems. - Drive technical decisions and provide context-aware solutions for AI systems in biological research. - Experiment with cutting-edge industry solutions—orchestration patterns, analytical DB (DuckDB, etc), distributed computing (AWS Athena, Trino, etc), integration with data platforms (Snowflake, Databricks, etc). - Lead core stack component development focusing on sustainability, scalability, security, reliability, and performance. - Foster team growth by sharing expertise and mentoring colleagues through code reviews, technical discussions, and knowledge sharing. About you - You’re driven by impact — excited to empower biomedical researchers with intuitive, AI-driven tools that unlock scientific discovery. - Strong collaborative skills with an open, pragmatic mindset; you thrive in multidisciplinary environments that involve people with diverse backgrounds. - Clear and effective communicator who can translate technical complexity into actionable decisions for the team. - Proven track record leading software development at scale in production environments. - Deep understanding of system architecture, infrastructure design, and building resilient distributed systems. - Extensive experience with production environments: continuous deployment, high availability, observability, and security. - Curiosity and ideally hands-on experience with AI systems — from integrating LLMs to managing their connection to data. - Passion for user experience and product thinking: you consider not only the system’s internals but how the end user interacts with and benefits from your work. - Proficiency with Claude Code and other AI software engineering tools - Fluent English, both written and spoken. - Stack: Python, DuckDB, Kubernetes, AWS #LI-MD1 What we offer - Flexible work organization - Friendly and informal working environment - Opportunity to work with an international team with high technical and scientific backgrounds Recruitment Process & Security - Please complete the form and submit your CV. - Owkin is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, sex, gender, sexual orientation, age, color, religion, national origin, protected veteran status or on the basis of disability. - Owkin is a great place to work. As a coveted workplace we are, unfortunately, vulnerable to recruitment phishing scams. We urge all job seekers and candidates to be wary of potential scams. Most of these have individuals posing as representatives of prominent companies, including Owkin, with the aim of obtaining personal, sensitive, or financial information from applicants. These scams prey upon an individual’s desire to obtain a job and can sometimes “feel” like a genuine recruitment process. Some red flags are identified below. Should you encounter a recruitment process that claims to be for Owkin but is not consistent with the below, please do not provide any personal or financial information: - Legitimate Owkin recruitment processes include communication with candidates through recognized professional networks, such as LinkedIn. - Communication is always through an official Owkin email address (from the @owkin.com domain), over the phone or through our applicant tracking system (Greenhouse). - The Owkin talent team do use platforms such as LinkedIn and Job Teaser, however if you have any concern or doubt about this contact, please ask for them to send an email from @Owkin.com. - The Owkin talent team will not solicit personal data from candidates during the application phase including, but not limited to, date of birth, social security numbers, or bank account information; - Legitimate Owkin interviews may be conducted over the phone, in person, or via an approved enterprise videoconferencing service (Google Meets). They will not occur via Signal, Telegram or Messenger - Owkin offers of employment are based on merit and only extended once a candidate has interviewed with members of the talent and hiring team. Offers will be extended both verbally and in written format. If you think that you have been a victim of fraud, - Check the identity of the talent team on LinkedIn - Check our senior team on our website https://owkin.com/team/ - Check the existence of the position on our website: https://www.owkin.com/careers#current-opportunities - Notify Owkin's recruitment unit at this address hiring@owkin.com - contact the following authorities: - [FR] https://internet-signalement.gouv.fr/ - [UK] https://www.actionfraud.police.uk/reporting-fraud-and-cyber-crime - [US] https://reportfraud.ftc.gov/
Company Introduction Highline offers a smarter way to pay and get paid. Through Highline's intelligent payment network, consumers can make payments directly from their paychecks and access lower-cost credit, easier approvals, and faster loan repayment that minimizes interest. This automated experience ensures on-time bill payment without the hassle of managing balances or overdraft fees. Billers and lenders benefit from a more reliable, lower-cost payment method and penalty-free payments. We believe everyone should keep more of their money - so we've built Pay by Paycheck. Founded by a team with deep fintech, payments, and payroll-linked product experience, Highline is backed by top-tier VCs including Foundation Capital, Costanoa Ventures, and Jump Capital. Join us in building the future of payments! Highline is a fully remote company for U.S.-based candidates. We are not currently able to offer visa sponsorship. What you’ll be doing We are hiring a Principal Backend Engineer to serve as the technical leader and architect for Highline’s platform. This is a foundational hire - you will own system design, guide engineering standards, and shape the future of our payments infrastructure. You will inherit an existing production platform and own its evolution, technical direction, and engineering standards going forward. You will: - Architect, design, and evolve Highline’s backend systems, APIs, and distributed services - Own the payments engine, including banking integrations, ledger systems, and money movement orchestration - Define and maintain our public API surface for merchants and partners (REST & gRPC) - Lead design and implementation of state machines, webhook systems, and event-driven architectures - Establish best practices for database design, migrations, and transactional integrity (PostgreSQL, Redis) - Build and standardize code generation workflows (protobuf, SQLBoiler, mockgen) - Own and evolve our observability stack (Prometheus, Grafana, Loki, Mimir, Tempo) - Design and maintain secure systems, including: - PII encryption and searchability (deterministic encryption, blind indexes) - Authentication (JWT), authorization (RBAC via Casbin) - Key management (KMS) and compliance posture - Lead infrastructure strategy across: - Kubernetes (EKS), Pulumi (Go), AWS (ECR, KMS, SES, SNS) - CI/CD and deployment workflows (ArgoCD) - Secrets management (Vault) - Own production reliability, incident response, and system resilience - Architect event-driven systems and message queue-based async processing for high-volume transactions - Introduce and scale AI-augmented engineering workflows, including sprint planning and developer productivity tooling - Mentor engineers and elevate the team’s technical standards and execution What we are looking for - 8 - 12+ years of backend or distributed systems engineering experience - Proven experience architecting and owning production-grade payment systems or financial infrastructure - Deep expertise in Golang - Strong experience with: - PostgreSQL, Redis - REST & gRPC API design, OpenAPI - Distributed systems and microservices architecture - Event-driven systems and message queues - Experience designing: - Ledger systems and financial state machines - Webhook-driven integrations - Highly reliable, idempotent systems - Strong knowledge of cloud infrastructure and DevOps: - Kubernetes, AWS (EKS, ECR, KMS, SES, SNS) - Infrastructure as code (Pulumi preferred) - CI/CD systems (ArgoCD) - Experience building and owning observability platforms - Deep understanding of security best practices, including encryption, PII handling, and compliance - Experience with searchable encryption techniques (deterministic encryption, blind indexing) is strongly preferred - Strong experience with testing strategies: - Integration testing, E2E testing, and contract testing across services - Demonstrated ability to: - Lead architecture decisions - Mentor and level up engineers - Operate as a technical leader in a fast-moving environment What success looks like - You become the technical authority on Highline’s platform within your first 3 -6 months - You establish scalable, reliable architecture that supports rapid product expansion - You significantly improve system reliability, observability, and incident response - You build a strong engineering culture focused on quality, ownership, and execution - You help hire and mentor the next generation of engineers on the team Why Highline - Build and own the core infrastructure powering a next-generation payments network - Join a mission-driven company transforming how people pay bills and access credit - Backed by top-tier VCs: Foundation Capital, Costanoa Ventures, and Jump Capital - Shape the engineering culture and technical direction from the ground up - High autonomy, high ownership, and high impact Compensation and Benefits - Competitive salary + equity (range based on experience and level) - Flexible PTO - Medical, dental, and vision insurance (including dependents) - Mental health and wellness program - Parental leave
Company Introduction Highline offers a smarter way to pay and get paid. Through Highline's intelligent payment network, consumers can make payments directly from their paychecks and access lower-cost credit, easier approvals, and faster loan repayment that minimizes interest. This automated experience ensures on-time bill payment without the hassle of managing balances or overdraft fees. Billers and lenders benefit from a more reliable, lower-cost payment method and penalty-free payments. We believe everyone should keep more of their money - so we've built Pay by Paycheck. Founded by a team with deep fintech, payments, and payroll-linked product experience, Highline is backed by top-tier VCs including Foundation Capital, Costanoa Ventures, and Jump Capital. Join us in building the future of payments! Highline is a fully remote company for U.S.-based candidates. We are not currently able to offer visa sponsorship. What you’ll be doing We are hiring a Senior Full-Stack Engineer (TypeScript + Go) to own and scale Highline’s frontend platform and user-facing applications. This is a high-ownership role where you will operate as the primary frontend engineer, responsible for multiple applications and the overall frontend architecture. You will: - Own and maintain four deployable applications across the platform: - Portals (member, client, and internal support) built from a shared Next.js codebase - Highline Link enrollment SDK (Angular, embedded on partner/merchant domains) - Marketplace UI (Next.js) - Demo site (React + Go) - Architect, build, and maintain frontend systems using: - TypeScript, React (v18+), Next.js (App Router + Pages Router), Angular (v19+) - Design and implement authentication flows (JWT, MFA, session management) - Build and maintain SSR/SSG applications and optimize performance and scalability - Develop and maintain JavaScript SDKs for external partner integration - Ensure strong developer experience for partners integrating with Highline - Implement and maintain frontend observability (error tracking, performance monitoring) - Establish and uphold strong testing practices, including E2E testing - Work with tools and libraries such as React Query, Axios, SCSS, and modern frontend patterns - Build and maintain Web Components (Angular Elements, Shadow DOM) - Collaborate with backend engineers and contribute to Go services when needed - Work within CI/CD pipelines and deployment workflows (GitHub Actions, Docker) - Make autonomous decisions on: - Framework evolution and migration strategy - Build and deployment pipelines - SDK versioning and backward compatibility - Overall frontend architecture and standards What we are looking for - 5–8+ years of full-stack or frontend-focused engineering experience - Strong expertise in TypeScript and modern frontend frameworks - Deep experience with: - React (v18+), Next.js (App Router and Pages Router) - Angular (v19+) - Experience building and owning production-grade frontend applications - Strong understanding of: - SSR/SSG patterns - Authentication systems (JWT, MFA, session management) - API integration patterns - Experience developing SDKs or embedded frontend systems - Familiarity with: - React Query, Axios, SCSS - Web Components (Angular Elements, Shadow DOM) - Experience with frontend observability tools (error tracking, performance monitoring) - Comfort working across the stack, including contributing to Go backend services - Experience with CI/CD pipelines and deployment workflows (GitHub Actions, Docker) - Strong testing mindset, including E2E testing Bonus: - Experience with WordPress What success looks like - You become the owner of Highline’s frontend platform and applications - You deliver a consistent, scalable, and high-quality user experience across all products - You improve performance, reliability, and developer experience for both internal teams and external partners - You successfully manage and evolve multiple frameworks and codebases - You make sound architectural decisions that scale as the company grows Why Highline - Own and shape the entire frontend platform at a fast-growing fintech company - Work on products used across consumers, partners, and internal teams - Backed by top-tier VCs: Foundation Capital, Costanoa Ventures, and Jump Capital - High autonomy, high ownership, and high impact - Opportunity to define frontend architecture and standards from the ground up Compensation and Benefits - Competitive salary + equity (range based on experience and level) - Flexible PTO - Medical, dental, and vision insurance (including dependents) - Mental health and wellness program - Parental leave

