Senior Software Engineer - Backend
First seen by Alion on Nov 4, 2026.
HUB2 is a French fintech founded in 2019 by Ashley Gaüzère (Telecom 2004, ex-Orange Middle-East Africa), and joined in 2023 by co-founder Jean-Rémi Kouchakji (HEC 2013, ex-founder PayinTech). The company emerged in response to the lack of an inclusive and efficient banking system in Africa, where most transactions are conducted via mobile wallets developed by regional telecom operators,
HUB2 is building a payment infrastructure to facilitate the interoperability of payment methods across the region, including Mobile Money, bank cards, bank transfers. To date, HUB2 integrates over 30 mobile money and banking networks, including major operators such as Orange, MTN, Moov, and Wave, and operates in nine countries in West and Central Africa. Our clients range from neobanks, payment aggregators, international transfer operators, microcredit companies, to e-commerce businesses.
Currently, HUB2 processes €1 billion in annual transaction volumes across these nine countries. The company employs 40 people, across its four offices in Abidjan, Réunion, Paris and Mauritius. As a high-growth startup, HUB2 plans to continue this trajectory through 2025 and 2026 in West and Central Africa. Our ambition is to establish the leading payment platform across Francophone Africa.
In a context of hyper-growth and following an oversubscribed Series A funding round in 2024, the company is committed to designing, structuring and developing strategic assets to maintain its competitive advantage and build the pan-African multi-payment platform of tomorrow. In this context, we are recruiting a Senior Software Engineer, who will report to the VP of Technology.
As a Senior Software Engineer, you will be a technical leader within our backend team. You will design, build, and operate the critical services that power our platform. This role requires you to tackle our most complex technical challenges, ensuring our systems are scalable, reliable, and performant.
You will mentor other engineers and drive technical excellence, embodying our core values of Excellence, Accountability, and Trust.
- Design & Develop: Architect, code, test, and deploy robust backend services and APIs using Node.js, TypeScript, and Nest.js.
- System Architecture: Contribute to key architectural decisions, ensuring our solutions are built for scale and long-term maintainability on our Azure cloud infrastructure.
- Technical Excellence: Uphold high standards for code quality through code reviews and by championing best practices in testing, security, and performance.
- Ownership & Accountability: Take full ownership of features and projects, from initial concept through to production deployment and monitoring. You are responsible for the impact of your work.
- Problem Solving: Diagnose and resolve complex production issues, demonstrating a methodical and efficient approach to debugging.
- Mentorship: Mentor junior and mid-level engineers, sharing your expertise and fostering a culture of learning and continuous improvement within the team.
Technical Skills & Experience
- 8+ years of professional software development experience, with a strong focus on backend systems.
- Deep expertise in Node.js and TypeScript, with proven experience building complex, production-grade applications.
- Strong experience with relational databases like PostgreSQL and caching systems like Redis.
- Familiarity with cloud platforms (Azure is a plus) and CI/CD pipelines (GitLab CI/CD).
- Experience designing and building RESTful APIs and working with microservices architecture.
- Excellent written and spoken communication in French and English.
- Problem-Solver: You have a natural curiosity and a tenacious attitude when it comes to solving complex problems.
- Autonomous & Proactive: You are self-driven, able to manage your own projects, and dynamic in your approach to getting things done.
- AI-Powered Productivity: You actively explore and adopt AI tools (like Cursor, Claude Code, etc.) to accelerate your daily workflow and improve efficiency.
- Thrives in a Demanding Context: You perform well in a fast-paced, high-expectation environment and see challenges as opportunities for growth.
- Team Player: You build Trust through open communication and reliable collaboration.
Our Tech Stack
- Languages: Node.js, TypeScript
- Framework: Nest.js
- Databases: PostgreSQL, Redis
- Messaging/Queues: BullMQ
- Cloud & Infra: Azure
- CI/CD & DevOps: GitLab CI/CD, Docker
- Shape the product at a pivotal moment — scaling core infra and launching new verticals.
- Work directly with the Founder and VP Engineering in a fast-moving team with real traction.
- Build high-impact products for clients building the future of finance in Africa and beyond.
- Join a mission-driven company creating financial infrastructure where it's most needed.
- Contract Type: Full-time
- Direct reporting to the VP of Technology
- Location: Lyon (France)
- Start Date: As soon as possible