Senior Frontend Developer – React & TypeScript

Stellenbeschreibung:

Senior Frontend Developer – React & TypeScript

At CheckPayee, we’re building the infrastructure of trust for European payments. Our real-time API verifies payees before payments are processed — protecting users and reducing APP fraud. As a Senior Frontend Developer, you’ll work on creating intuitive, secure interfaces that make our fraud prevention technology accessible to banks, PSPs, and fintechs across Europe.

Build Modern Web Applications : Develop responsive, accessible React applications with TypeScript for payment verification
Collaborate with Design : Implement pixel-perfect UI components that match our design system
Optimize Performance : Ensure fast loading times and smooth interactions for real-time financial applications
Maintain Code Quality : Write clean, testable code with comprehensive documentation
Mentor Team Members : Collaborate with product, design, and backend teams on feature development
Frontend : React 18+, TypeScript, Tailwind CSS, Vite
State Management : Zustand, React Query for server state
Testing : Jest, React Testing Library, Playwright for E2E
Tools : ESLint, Prettier, Git, Husky for git hooks
Deployment : Vercel with automated CI/CD pipelines
5+ years of professional React development experience
Experience with responsive design and CSS-in-JS solutions
Knowledge of React ecosystem (hooks, context, suspense)
Experience with version control (Git) and collaborative development
Understanding of web accessibility standards (WCAG)
Knowledge of payment systems or fintech applications
Experience with design systems and component libraries
Background in performance optimization and Core Web Vitals
Familiarity with backend technologies (Node.js, APIs)
Experience with monitoring tools (Sentry, LogRocket)
We’re multilingual, collaborative, and customer-obsessed
We solve complex problems with simple explanations
We’re proactive, not just reactive in our support
You’ll be part of a growing, international customer success team
Cutting-edge Technology : Work with the latest React features and modern tooling
Real Impact : Your code directly improves payment security for businesses across Europe
Learning Environment : Regular tech talks, conference attendance, and learning budget
Work-Life Balance : Flexible hours, remote-first culture, and generous PTO
Growth Opportunities : Clear career progression paths and mentorship programs
Initial Review : We’ll review your portfolio and resume within 2 business days
Technical Interview : 45-minute discussion about React, TypeScript, and frontend best practices
Coding Challenge : Take-home project building a small React application (2-3 hours)
Team Interview : Meet with frontend team members and discuss collaboration
Final Decision : Complete process within 1 week of application

We value developers who combine strong technical skills with excellent communication and a passion for creating great user experiences. You should be comfortable working in a fast-paced environment, learning new technologies, and contributing to architectural decisions.

Ready to build the future of payment verification? We’d love to see your work and discuss how you can contribute to our mission.