Founding Elixir Engineer – Building Innovative Fintech

Job title: Founding Elixir Engineer – Building Innovative Fintech Important: if you are a talented experienced Team Lead, please, apply, we are open to grow together Salary range: Competitive salary + meaningful equity (funded late seed, preparing for launch in Q1 2026) Qualifications or experience required: 5+ years of working full-time as a software engineer (exceptions can be made for the right candidate) Remote job: Yes Remote restrictions: Europe (GMT +/– 2h) Remote work or relocation as an employee to France/UK The Opportunity Join the founding engineering team building an innovative solution Empay for embedded finance market (B2B2C) across the UK & EU with further expansion to other regions. The market is just opening up – perfect timing to build something new & massive. If you’ve ever wanted to see your code become the core of a real fintech infrastructure – this is it. This is a true 0→1 opportunity: no endless meetings — just a clear mission, a strong founding team, and full ownership. The Founders Built by proven entrepreneurs: Experienced team in fintech & banking (PWC, Solaris, SumUp, Visa, Sap) with successful exits. Together, we bring deep expertise in building and scaling billion-dollar fintech & banking companies. The Role We need a brilliant backend engineer to scale & build our core banking engine and payment infrastructure. You’ll Own: Creating payment integrations with UK & EU leading payment providers & Visa/Mastercard Designing and developing high-performance APIs for efficient request and data handling Building the data pipeline that turns financial data into instant compliance checks Maintain and scale Card issuing and loyalty platform Develop Payments functionality including routing, payment initiation and account management on Card issuing and loyalty platform Strong technical ownership for your tasks across all stages: understanding subject domain and requirements, solution design and architecture, integrations with internal and external services, software reliability and performance, testing, rollout and maintenance End-to-end software life cycle contribution including CI/CD, monitoring and alerts, production support of the solution Maintain strong collaboration with front-end development teams, Product and UX teams, and neighboring backends peers Technical Challenges: Build for 100,000+ monthly transactions from day one Create a system that scales across multiple countries and currencies Design infrastructure that handles sensitive financial data securely What We’re Looking For Must-Haves: Minimum 5–6 years building fintech/lending/banking backends (more experience is awesome) Strong Elixir experience with production systems at scale Experience with UK/European open banking platforms / APIs (Salt Edge, Nordigen/GoCardless, Tink) Built high-throughput transaction processing systems Experience with PostgreSQL and data pipeline architecture Understanding of financial systems and risk decisioning Huge Plus: Worked at companies like Revolut, Wise, Monzo, Curve, or any BNPL/lending fintech Built consumer products that scaled to 100k+ users Experience with UK & EU payment systems Former founding engineer who’s seen 0→1 journey What You Get Own the core product – your code will process millions in payments monthly Founding engineer equity – real ownership in a rocket ship, not 0.01% options Direct line to founders – your ideas ship to production in days, not months Build your own empire – hire and lead the entire backend team as we scale Work with the best team of fintech & big marketing experts Massive social impact & new fintech category Shape the technical culture – define how we build, not follow someone else’s playbook Tech Stack Backend: Elixir (modular monolith), PostgreSQL, Docker, Kubernetes Infra & Monitoring: Grafana, Loki, Tempo, Prometheus Cloud: DigitalOcean (potential transitioning to AWS) Frontend: React / TypeScript / Next.js Mobile: Flutter Now backend is built on Elixir, but as a Founding Engineer you’ll have the autonomy to evolve the stack – if a certain microservice calls for Go or Python, that’s on the table. Additional tech stack: React/TS/Next (Frontend); Flutter (Mobile). Interview Process Fast and transparent (total time: 1 week max): 30-min chat with founders (background + values & culture fit) Technical interview + short live coding Paid technical task (real problem we’re solving) Final decision within 48 hours