💻 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:
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Extensive experience with TypeScript & JavaScript (ES6+)
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Strong Node.js backend expertise
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Advanced React, HTML5, CSS skills
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Deep understanding of RESTful APIs (HTTP, JWT, OAuth)
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Experience with relational databases (PostgreSQL / MySQL)
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Proficiency with Git, Linux/Unix CLI, npm/pnpm
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Unit, integration, and E2E testing (Playwright, Cypress, etc.)
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Web performance optimisation and scalable system design
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Practical experience using AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude, Gemini)
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Strong critical thinking to validate AI-generated code for security, maintainability, and performance
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Code review, documentation, and mentoring skills
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Ability to take ownership of complex features and drive delivery
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English – professional working proficiency
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Polish – minimum B2 level
- Location Requirement: Candidates must be physically based within the European Union (EU)
Desirable / Plus:
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D3.js (data visualisation)
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Redux / Zustand / Context API
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Tailwind / Styled Components
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Docker / Terraform / AWS Lambda
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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.