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November 4, 2026

Mid Software Developer (React / .NET)

Mid • On-site

Kalety, Poland

Quick Facts

  • Role: Mid Software Developer (React / .NET)
  • Work model: Hybrid — 2 to 3 days/week on-site, remaining days remote
  • Collaboration: B2B or Employment Contract

Description

You will develop solutions that support real business and operational processes. The frontend is built with React, while the backend is developed in C# / ASP.NET Core and exposes REST API services. You’ll work with CI/CD, ensure software quality and maintainability, and collaborate closely with users and both IT and business teams.

Responsibilities

  • Develop the frontend using React
  • Create and evolve backend components and REST API services in C# / ASP.NET Core
  • Work with CI/CD tools and processes
  • Maintain software quality, stability, and maintainability
  • Participate in code reviews and work with Git repositories
  • Write and maintain unit and integration tests
  • Collaborate in a Kanban-based team workflow
  • Contribute to solution architecture design
  • Analyze user needs and translate them into technical solutions
  • Work with the IT team and business representatives

Requirements

  • Minimum 2 years of commercial experience building web or business applications
  • Very good practical knowledge of CI/CD and software delivery
  • Experience with code reviews and maintaining code quality
  • Proficiency with Git and code repositories
  • Experience creating and integrating REST APIs
  • SQL knowledge and relational databases experience
  • Experience writing automated tests
  • Knowledge of best practices for building and maintaining software
  • Ability to independently analyze problems and propose solutions
  • Collaboration skills with both technical and business stakeholders
  • English skills enabling comfortable work with technical documentation

Benefits

  • Real impact on system development: influence decisions on functionality, architecture, and direction
  • Direct contact with system users and the ability to observe solutions in real operations
  • Full application context: React UI, APIs, and C# / ASP.NET Core backend
  • Stable business environment of a long-standing recycling-focused company
  • Small team with short decision paths and low bureaucracy
  • Flexible employment form: B2B or Employment Contract
  • Hybrid model with 2–3 on-site days per week
  • Commuting support
  • Benefit MultiSport card with co-financing

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