Senior Software Engineer

Senior Software Engineer Join to apply for the Senior Software Engineer role at Swan. About Swan is Europe’s embedded banking specialist. We empower software companies to embed banking features like accounts, cards, and payments directly into their products, under their own brand. Swan processes over €1.5 billion in monthly transactions for more than 150 companies—like Pennylane, Indy, Agicap, Libeo, and Lucca. Founded in 2019, the company has received growth capital from leading investors such as Lakestar, Accel, Creandum, Bpifrance and Eight Roads. Swan is a principal member of Mastercard and a licensed financial institution, regulated by the French banking authority (ACPR). Mission Banking belongs in business software. Many software companies already serve small businesses incredibly well: helping them send invoices, run payroll, manage inventory, and more. They’re on a mission to become the central hub for managing every aspect of business life. When it comes to financial workflows, there’s still a gap. Too many critical tasks like managing cash flow, tracking payments, or reconciling accounts happen outside the software, across spreadsheets, email threads, banking portals. It’s a missed opportunity. Business software shouldn’t just record financial activity — it should run it. Job Description Swan is looking for a Senior Software Engineer to join our tech team of 70+ people for a specific project over a few months. The Engineering team is by far the largest at Swan. This team includes Software developers, who build payments and end‑customer applications, as well as Infrastructure, DevOps, QA, and Security. We build with intent, focusing on solving real problems that matter. In a regulated environment, compliance, security, and resilience are at our core. We value ownership, open collaboration, and a shared vocabulary to keep complexity manageable. Simplicity is key, clean, maintainable code wins over clever tricks. We ship fast, learn continuously, and always strive for excellence. Your mission You will be technically responsible for one or more projects. You will have the opportunity to solve problems in one of the most demanding IT domains with a reactive architecture. You will design with the product team the bank by API. You will improve the performance of a system with a rapidly growing load. You will ensure the respect of the architecture rules and of the automated tests. Technical environment Java/Scala Node.js/TypeScript GraphQL PostgreSQL Redis Kafka Kubernetes AWS/GCP Preferred Experience Experience: at least 5 years as a Software Developer with a strong grasp of back‑end systems. Technical Skills: Proficient in Node.js/TypeScript or Scala. Hands‑on experience with automated testing & CI/CD. Bonus: Familiarity with GraphQL, Kafka, and microservices architecture. Passionate about functional programming & open source. Always up to date with tech trends (meetups, blogs, side projects). Fluent in English. Our ideal teammate: Empathetic. Skilled. Frank. We love to challenge each other, and we leave our egos at the door. Perks of being a Swanee Hybrid remote policy with office in Paris at least 3 days per month. Relocation package available (if you want to settle in Paris). Holidays: 25 days + RTT. Meal Vouchers: Swile card to cover meals on work days. Transport: Monthly mobility package for employees. Health insurance (mutuelle): Alan. Sports discounts via Classpass and Gymlib. Well‑being support: access to Moka Care for mental health and wellness. Offsite: annual gathering to reconnect, deep‑deep into big topics, and relax. Diversity and inclusion: we’re working hard to get better every day. Swan is committed to providing a caring work environment for all employees, regardless of age, sex, disability, sexual orientation, race, religion, or belief. When it comes to recruitment, we’re interested in your work experience, skills, and overall personality. Because diversity makes the workplace stronger and is necessary for Swan’s success, we are intensifying efforts to incorporate concrete actions to help us improve in this area. Our values Simplicity Leonardo Da Vinci said: “simplicity is the ultimate sophistication.” If something’s convoluted or confusing, we work extra hard to break it down. Making complex things simple is what we do. Long Term We always play the long game, whether it’s to support our partners in their growth journey, or make tangible commitments to climate action. Excellence We are a team of experts who consistently go all out to create pixel‑perfect banking services and exceed our partners’ expectations—whatever it takes. Be Human We believe in the power of kindness and the importance of acting with integrity. Embracing our humanity extends beyond interpersonal interactions; it means caring about greater issues that affect our planet. Recruitment process A 30‑min video call with our Talent Acquisition Manager. A live coding interview with two Software Engineers. A hiring manager interview with an Engineering Manager. An interview with our Engineering Director and our CTO. Seniority level Mid‑Senior level Employment type Full‑time Job function Engineering and Information Technology Industry Banking Referrals increase your chances of interviewing at Swan by 2x. Location: Paris, Île‑de-France, France. #J-18808-Ljbffr