Senior .NET Developer, Fintech

• Develop and maintain backend services for payment processing and the back office, including reconciliation, payouts, fee calculation, settlements and the B2B client dashboard
• Build resilient integrations and asynchronous workflows using idempotency, outbox/inbox, sagas, retries and deduplication
• Meet performance and reliability targets, including p95/p99 latency and SLA/SLO
• Set up monitoring and alerting
• Deliver tasks with AI agents, validate generated code, add tests and fix defects
• Review code
• Keep specifications up to date
• Share knowledge with the team

• 5+ years of commercial experience with C# and ASP.NET Core
• Experience designing microservices
• Hands-on experience with Azure, Docker, AKS, MS SQL Server, MongoDB and Cosmos DB
• Real experience delivering tasks with AI tools or agents from task definition to a working result
• Understand every line of code shipped and be able to explain it
• Clean, maintainable code with tests
• Ownership of results and open communication when something goes wrong
• Nice to have: payments or banking background
• Nice to have: spec-driven development
• Nice to have: product or startup experience
• Nice to have: mentoring or technical leadership

• REMOTE OPPORTUNITY to work full-time
• Vacation 27 paid days per year from day one
• Paid sick leave
• Bonuses for recommending successful applicants for positions in the company
• Access to language lessons on Preply and educational courses on Coursera and other platforms
• Wellbeing Wallet: after the integration period, up to €2,800 per year for medical expenses, therapy, dentistry, pharmacy, fitness, sports activities and emotional wellbeing
• Necessary tech equipment
• €1,000 budget for setting up a home office or renting a coworking space
• Family support: €1,000 gross for childbirth, marriage or bereavement
• Annual Child Support Benefit of up to €1,000 gross per child
• Bonus for team members after three years of continuous service