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June 20, 2026

Senior Python & React Full-Stack Engineer

Senior • Remote

25,200 - 31,500 PLN

Warsaw, Poland

Build what matters—stabilize, improve, and evolve a live product used every day.
Remote (EU) • Up to 5 remote days/week

As a Senior Python & React Full-Stack Engineer, you will be working on an existing software product used within a single-client environment. Instead of starting from scratch, you will maintain, troubleshoot, and enhance a live solution—helping it grow as new users onboard and new needs emerge. If you enjoy practical problem-solving across frontend and backend, this is the kind of role where your work has immediate impact.

Responsibilities

  • Support the ongoing development and maintenance of an existing software product
  • Troubleshoot and fix bugs reported by users during onboarding and day-to-day usage
  • Implement improvements and new features based on user feedback and business needs
  • Enhance the UI/UX experience to keep the platform intuitive and user-friendly
  • Work across both backend and frontend layers of the application
  • Collaborate with stakeholders to understand issues, prioritize enhancements, and deliver practical solutions
  • Help onboard new users by ensuring the platform remains stable and effective
  • Continuously improve code quality, usability, and performance

Requirements

  • 6+ years of experience as a Full Stack Developer / Full Stack Engineer
  • Hands-on backend experience with Python
  • Solid frontend experience with React
  • Experience with databases and cloud-based environments (preferably Azure)
  • Strong understanding of the software development lifecycle across frontend and backend
  • Experience maintaining and improving existing products
  • Strong debugging and issue-resolution skills
  • Product-minded approach with sensitivity to UI/UX and user needs
  • Fluent English
  • Legal right to work in Europe

Nice to Have

  • Experience working on client-facing internal tools or single-client product environments
  • Exposure to product support, user onboarding, or post-launch optimization
  • Enthusiasm for AI and practical understanding of how it works
  • Familiarity with Azure cloud-based application architecture

Language Required: English (Fluent)
Eligibility: Only candidates with an existing legal right to work in Europe will be considered.