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September 28, 2026

Full-Stack Developer (Python & React)

Senior • Remote

Warsaw, Poland

Quick Facts

  • End-to-end ownership of a production web application (frontend + backend)
  • Modern stack: React 19, TypeScript, Python, FastAPI, Server-Sent Events, OAuth2/OIDC
  • Automated CI/CD with GitHub Actions

Description

You will design, build, and evolve a modern web application end to end, working closely with the client and owning technical decisions from development to deployment. The role includes building a responsive React 19 UI, developing REST APIs and real-time Server-Sent Events streaming with FastAPI, and implementing enterprise-grade authentication. You’ll drive best practices across testing, code quality, security, observability, and documentation.

Responsibilities

  • Develop a production-grade full-stack web application from React frontend to Python/FastAPI backend
  • Build accessible, maintainable, and responsive UIs using React 19, TypeScript, and Tailwind CSS
  • Implement REST APIs and real-time Server-Sent Events streaming end to end
  • Add secure authentication and authorization using OAuth 2.0 / OIDC (Azure AD via MSAL or Ping), including MFA
  • Build and maintain CI/CD pipelines using GitHub Actions
  • Apply engineering best practices: testing, code quality, security, observability, and documentation
  • Collaborate with clients to gather requirements, propose solutions, and communicate technical decisions
  • Own the project’s technical direction, prioritization, and delivery
  • Stay current with emerging technologies and propose architecture improvements

Requirements

  • 4+ years of hands-on full-stack engineering experience
  • Strong React (ideally React 19) and TypeScript skills for production-ready frontend code
  • Solid Python 3 and FastAPI experience building backend services and APIs
  • Hands-on Tailwind CSS and modern frontend tooling
  • Experience designing REST APIs and implementing Server-Sent Events (or similar streaming) end to end
  • OAuth 2.0 / OIDC experience, including Azure AD (MSAL) or Ping and MFA
  • GitHub Actions and CI/CD pipeline experience
  • Ability to work independently and make sound technical decisions
  • Excellent communication with clients and non-technical stakeholders
  • Strong product ownership mindset (quality, reliability, outcomes)

Benefits

  • Access to top e-learning platforms and a development budget
  • Real ownership opportunities with scope expansion and internal promotion for Leads
  • Remote-first, flexible hours, long-term B2B collaboration
  • Flat structure and collaborative engineering environment
  • Integration trips and team integration budgets
  • Supportive culture and equal opportunity commitment

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