FULLSTACK DEVELOPER

💻 Senior Full Stack TypeScript Engineer – Fintech 📍 remote/b2b/30-40 € /h Join a leading fintech company with 25+ years of innovation in the financial markets. Our platform connects participants in repo and securities financing, delivering real-time solutions that enable clients to trade efficiently, accurately, and competitively . We foster autonomous, agile, and technology-driven teams with a strong focus on product excellence, innovation, and collaboration. We are seeking a Senior Full Stack TypeScript Engineer to develop high-performance web applications and backend services, shaping the next generation of fintech solutions. Requirements / Skills: • Extensive experience with TypeScript & JavaScript (ES6+) • Strong Node.js backend expertise • Advanced React , HTML5, CSS skills • Deep understanding of RESTful APIs (HTTP, JWT, OAuth) • Experience with relational databases ( PostgreSQL / MySQL ) • Proficiency with Git, Linux/Unix CLI, npm/pnpm • Unit, integration, and E2E testing (Playwright, Cypress, etc.) • Web performance optimisation and scalable system design • Practical experience using AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude, Gemini) • Strong critical thinking to validate AI-generated code for security, maintainability, and performance • Code review, documentation, and mentoring skills • Ability to take ownership of complex features and drive delivery • English – professional working proficiency • Polish – minimum B2 level • Location Requirement: Candidates must be physically based within the European Union (EU) Desirable / Plus: • D3.js (data visualisation) • Redux / Zustand / Context API • Tailwind / Styled Components • Docker / Terraform / AWS Lambda • Load testing tools If you thrive in a fintech, innovative, and collaborative environment and want to push the boundaries of financial technology , this role is for you.