We co-founded and led Viafintech (Barzahlen) to 100+ FTE , one of the most successful German fintechs, active in 17 markets across the EU and USA, and sold it in 2021 for a € three-digit million amount to NYSE-listed Paysafe Group.
Now we’re off to our next venture. This time we’re building a global champion for prepaid products: gift cards (Apple, Amazon, Google), airtime and eCash all in one simple API. Think of finperks as a stripe/adyen for all prepaid products and payments.
We started in summer 2025 and in just a few months we have already onboarded 700+ brands, and our first client goes live by the end of the year.
Many people completely underestimate the market size: about €600bn sold per year today, going to €1.8tn by 2028.
Instead of 5 players in the chain (brand → issuing tech provider → global distributor → local distributor → client), we connect brands directly with clients via the finperks platform. Today 95% of prepaid is still sold in the Global North; we believe that for the gig economy to monetize the Global South, prepaid will be key - from Netflix and Google to Apple and Uber.
We’re a team of 8 in Berlin-Charlottenburg. A mix of our best people from the last journey and brilliant new joiners. High ownership. Low ego. Kind humans. We ship fast, help each other, and celebrate wins.
Join early. Help build the global champion for prepaid.
Tasks
As a Software Engineer, you'll build the core platform that connects global brands with clients across multiple markets.
You will:
Build intuitive, responsive dashboards for clients to manage gift card inventory, track transactions, and access analytics in real-time
Create developer-friendly interfaces for API integration, and testing tools that make client onboarding seamless
Enable internal teams with purpose-built UIs that enhance operational efficiency and provide clear insights into system activity
Design and implement reusable React components with clean APIs that scale across our product suite
Connect frontend applications to our backend APIs, handling state management, error scenarios, and loading states elegantly
Collaborate with product and design to create interfaces that are not just functional but delightful to use
Optimize application performance, minimize bundle sizes, and ensure fast load times
Ensure all interfaces work flawlessly across desktop, tablet, and mobile devices
Write clean, maintainable code with comprehensive tests and participate in code reviews
You'll focus on frontend, but you'll occasionally work across the full stack - we're a small team where backend engineers ship UI fixes and frontend engineers optimize queries when needed
Requirements You'll need:
React Expertise: 3+ years building production React applications with strong understanding of hooks, component lifecycle, and modern React patterns
JavaScript/TypeScript: Solid foundation in JavaScript (ES6+) and experience with TypeScript
State Management: Experience with state management solutions (Redux, MobX, Zustand, or Context API)
API Integration: Proven experience integrating with RESTful APIs and handling async operations
Styling: Strong CSS skills and experience with modern styling approaches (CSS Modules, Styled Components, Tailwind, etc.)
Build Tools: Familiarity with modern frontend tooling (Webpack, Vite, npm/yarn)
Version Control: Proficient with Git workflows and collaboration practices
Problem Solver: You enjoy translating complex requirements into intuitive user interfaces
Communication: Strong English skills; German is a plus
Nice to have:
Experience in FinTech, SaaS platforms, or developer tools
Knowledge of testing frameworks (Jest, React Testing Library, Cypress)
Understanding of web performance optimization techniques
Experience with data visualization libraries (Recharts, D3.js, Chart.js)
Familiarity with AWS services and cloud deployment
Basic understanding of backend technologies and APIs (our backend stack: Ruby and Golang)
UI/UX design sensibility
Benefits
Learn from experienced Engineers: Receive constant feedback while having eye-level discussions
Ownership from Day One: Shape product decisions and own features end-to-end from concept to deployment
Shape the Product: Influence product direction by working directly with clients like Banks + FinTechs and major global brands
Modern Development Practices: Clean codebase, comprehensive testing, code reviews, and continuous deployment
Competitive Package: Attractive salary
Berlin Lifestyle: Office in Charlottenburg with flexibility for hybrid work arrangements
Ready to build frontend systems for the next FinTech Unicorn?
We are looking for builders ready for an ambitious journey. Expect tough challenges, plenty feedback, constant change, on-call duty and frequent deployments. In return you're getting lots of opportunity to grow, the smartest people you have worked with on your team and recognition for doing your best work.
If you need clarity on every task, avoid ambiguity at all costs, or prefer established processes over figuring things out - this isn't the place. But if you're energized by zero-to-one building, thrive when shipping fast matters more than perfection, and want ownership over following playbooks, Apply Now!