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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 (2–3 days/week on-site; remaining days possible remotely)

Description

You will develop and evolve business and operational web applications. The frontend is built with React, while the backend and REST API services are developed in C# / ASP.NET Core. The role includes CI/CD work, testing, code reviews, and close collaboration with users, the IT team, and business stakeholders.

Responsibilities

  • Develop the frontend using React
  • Build and enhance backend services and REST API endpoints in C# / ASP.NET Core
  • Work with CI/CD processes and tooling
  • Ensure software quality, stability, and maintainability
  • Participate in code reviews and work with Git repositories
  • Write and maintain unit and integration tests
  • Work in a Kanban-based team process
  • Collaborate on solution architecture
  • Translate user needs into technical solutions
  • Work with the IT team and business representatives

Requirements

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

Benefits

  • Real impact on product development: influence functional decisions, architecture, and solution direction
  • Direct contact with system users
  • Full application context from UI (React) to APIs and backend in C# / ASP.NET Core
  • Stable business environment in an established recycling company
  • Small team with short decision paths and low bureaucracy
  • Flexible cooperation model (B2B or employment contract)
  • Hybrid schedule (2–3 days on-site; rest remote possible)
  • Travel/commuting contribution
  • Benefit MultiSport card subsidy

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