About you: We are looking for an experienced Full-Stack Developer who is passionate about building scalable products and thrives in the dynamic environment of a startup. You should be flexible, product-oriented, and ready to take ownership, as you’ll become the first developer in our core team. If you expect strictly defined processes and perfectly detailed tickets, this role is not the right fit — we need someone who’s excited to shape the product hands-on. About project: Our client is building a cutting-edge B2B marketplace platform that optimizes surplus inventory sales, such as products approaching their expiration date. The system connects sellers with buyers, ensuring operational control and optimal resource use. You will be key in scaling the Supabase-powered application and shaping the technical foundation. Your area of responsibility: * Maintaining and enhancing the B2B marketplace platform; * Implementing new features across the full stack; * Optimizing database queries and ensuring system performance; * Following and enforcing security best practices; * Refactoring and improving existing code for maintainability; * Collaborating closely with the founder to define and deliver technical requirements; * Implementing and maintaining CI/CD pipelines; * Providing technical leadership and guidance for future team growth.
Skills and requirements: * 4+ years of experience in React and modern JavaScript; * Strong skills in TypeScript; * Experience in Tailwind CSS or similar utility-first frameworks; * Solid knowledge in PostgreSQL and database design; * Familiarity with Supabase or similar BaaS platforms (e.g., Firebase); * Experience in authentication and authorization systems; * Understanding of serverless architecture; * Expertise in Git workflows; * Upper-Intermediate or higher level of English.
Will be a plus: * Experience in B2B platforms or e-commerce systems; * Experience in PDF generation; * Expertise in building real-time features with Supabase; * Understanding of the German language.
We offer: * Working in a team of talented and passionate engineers; * Opportunity to work with the most trending technologies; * Long-term enjoyable cooperation; * Personal legal support; * English classes; * Paid vacation and sick days; * Competitive salary depending on your own talents; * Regular performance & career development reviews; * Team building events.
