Scalac
Fullstack Developer
ScalacPoland15 hours ago
Full-timeRemote FriendlyEngineering, Information Technology
💻 Senior Full Stack TypeScript Engineer – Fintech

📍 remote/b2b/30-40Euro/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

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.

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