Backend Developer

TRISERS is an AI-powered home-services marketplace (PWA), currently at MVP stage and moving fast toward launch. It is a small, high-ownership team based in Warsaw.

• Commercial experience with NestJS, Node.js, and TypeScript
• Strong experience with PostgreSQL and Prisma involving relational data modeling, query design, and migrations
• Solid understanding of REST API design, authentication, and clean architecture
• Ownership mindset, clear communication, and reliable delivery
• Comfortable working on-site and in English

Nice to have:

• Experience integrating payment systems or third-party APIs
• Experience building products from an early or MVP stage

• Design, build and maintain the backend that powers the platform including APIs, data models, and third-party integrations
• Own architecture decisions and ship features quickly in a small team
• Write clean, tested, maintainable code and participate in code reviews

This role requires immediate availability and a valid right to work in Poland already in place (PESEL, UKR/EU citizenship, or permit granted). The employer does not sponsor or wait for new work-permit procedures. On-site presence in Warsaw is mandatory; this is not a remote or hybrid role.