Senior Backend Engineer

Who you are

• You're pragmatic, learn quickly, and have a proven track record of shipping products that matte
• You're pragmatic, learn quickly, and have a proven track record of shipping products that matter
• You communicate clearly across disciplines and genuinely enjoy the dynamics of a cross-functional team where everyone contributes to solving the same customer problems
• Above all, you're curious – about the product, the users, the business, and how your technical decisions impact all three
• As a product-minded backend engineer, you don't just implement tickets
• You understand the "why" behind what you're building, challenge assumptions when needed, and proactively identify opportunities to create better outcomes
• You're comfortable discussing trade-offs with product managers, explaining technical constraints to business stakeholders, and collaborating with frontend and mobile engineers to design elegant end-to-end solutions
• You have deep expertise in NET and C# with a strong appreciation for maintainable, scalable code, and distributed architectures
• But more importantly, you know when to apply that expertise and when simpler solutions serve the product better
• You've built data-intensive applications before and understand the concepts of working in a regulated environment
• You take ownership not just of your code, but of the outcomes
• You move without being prompted, whether that's jumping into a customer issue, improving team processes, or mentoring colleagues
• You're curious about adjacent domains – you might peek at the frontend code, ask questions about the ML models, or dive into analytics to understand how features perform
• Quality is non-negotiable for you
• Automated testing, thorough code reviews, and security best practices are fundamental to how you work
• You balance technical excellence with pragmatism, always keeping the end user and business goals in mind
• At least 5 years of professional backend development with a product engineering mindset
• Excellent knowledge of .NET platform and C#
• Hands-on experience architecting and evolving distributed systems in production
• Proven ability to collaborate effectively with product managers, designers, and engineers from other disciplines
• Strong business acumen – you understand how your work connects to company objectives
• Clear, concise communication in English across technical and non-technical audiences
• A builder's mentality: you care deeply about shipping great products, not just writing great code

What the job involves

• We're looking for a Senior Backend Engineer who thinks like a product builder, thrives in a collaborative, cross-functional environment, and is passionate about creating robust, scalable financial infrastructure
• You'll be part of a domain team where various engineering crafts (Backend, Frontend, Mobile, ML/AI engineers, and QA) work together to own and evolve a shared product area that delivers real value to hundreds of thousands of businesses across Europe
• Our tech stack:
• Backend: .NET/C#, PostgreSQL, Redis, RabbitMQ, Kafka, Kubernetes, GCP
• You'll work alongside teams using React (Web), Swift (iOS) / Kotlin (Android), Python/ML frameworks, and modern test automation tools (Playwright, Appium)

The application process

• Recruiter Interview
• First Technical Interview
• System Design Interview
• Team Fit Interview (peer interview)
• Offer