Fullstack Developer

Join a leading fintech company with 25+ years of innovation in the financial markets. The platform connects participants in repo and securities financing, delivering real-time solutions that enable clients to trade efficiently, accurately, and competitively. The company fosters autonomous, agile, and technology-driven teams with a strong focus on product excellence, innovation, and collaboration.

• Extensive experience with TypeScript and JavaScript (ES6+)
• Strong Node.js backend expertise
• Advanced React, HTML5, and 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 (e.g., Playwright, Cypress)
• 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
• Code review, documentation, and mentoring skills
• Ability to take ownership of complex features
• English – professional working proficiency
• Polish – minimum B2 level

Nice to have:

• D3.js (data visualisation)
• Redux / Zustand / Context API
• Tailwind / Styled Components
• Docker / Terraform / AWS Lambda
• Load testing tools

• Develop high-performance web applications and backend services
• Validate AI-generated code for security, maintainability, and performance
• Perform code review, documentation, and mentoring
• Take ownership of complex features and drive delivery