FullStackSoftwareEngineer-Payments

We're looking for a full-stack engineer to join our Payments B2B team. You'll be working on the systems that give salon owners clarity and confidence over their financial lives: reconciliation, invoicing, transaction history, pay-ins and payouts. You'll also work on the internal tooling that keeps our ops, support, and compliance teams running smoothly at scale. You'll work across the full stack — Java and Spring Boot on the backend, React and TypeScript on the frontend — owning what you build from conception to production. You bring the mindset of someone who has genuinely sat with a small business owner and understood what it means when their financial data doesn't add up. You care about getting that right. **Our product is built on:** * Backend: Java, Spring Boot, RabbitMQ, PostgresSQL, MS-SQL * Frontend: React, TypeScript, Cypress, Jest * Infrastructure: Kubernetes, GitLab CI/CD, AWS, Datadog * Mindset: DevOps, DDD, event-driven architecture **You will be responsible for:** * Financial transparency for partners — evolve the systems behind reconciliation, invoicing, transaction history, and payin/payout flows that salon owners rely on daily * Internal tooling — iterate and improve the tooling that empowers our ops, support, and data compliance teams to move fast without creating risk * Platform reliability — own your services end-to-end, from architecture through deployment, with a DevOps mindset baked in * Experimentation — contribute to a culture that validates ideas with data before committing to them at scale **About Treatwell** Hi, we’re Treatwell. Nice to meet you. We’re a team of 700 passionate and brilliantly talented people across Europe. We’re the industry’s smartest salon management software, all connected to Europe’s leading bookings platform, working with over 50,000 salon partners across 13 countries, processing over 8 million bookings every month. And….breathe. But we’re not done yet. We’re on an exciting journey to digitally revolutionise the hair