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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 per week on-site; remaining days can be remote)
Collaboration: B2B or Employment Contract
Description
You will develop and evolve business solutions that support real operational and business processes. You’ll build the frontend in React and the backend in C# / ASP.NET Core, including REST API services, CI/CD work, code quality, stability, and automated testing.
Responsibilities
- Develop the frontend based on React
- Create and evolve backend services and REST API endpoints in C# / ASP.NET Core
- Work with CI/CD processes and tools
- Ensure software quality, stability, and maintainability
- Participate in code review and work with Git repositories
- Write and maintain unit and integration tests
- Collaborate as a team using Kanban
- Support solution architecture design
- Analyze user needs and translate them into technical solutions
- Work with IT and business stakeholders
Requirements
- Minimum 2 years of commercial experience building web or business applications
- Very strong practical knowledge of CI/CD and software delivery
- Experience with code review and maintaining code quality
- Comfortable working with Git and code repositories
- Experience building and integrating REST APIs
- SQL knowledge and relational databases
- Experience writing automated tests
- Knowledge of good practices for software development and maintenance
- Ability to independently analyze problems and propose solutions
- Ability to collaborate with technical and business stakeholders
- English proficiency to work comfortably with technical documentation
Benefits
- Real influence on product/system development (functionality, architecture, roadmap)
- Direct contact with system users
- Full application context: React UI, API, and C# / ASP.NET Core backend
- Stable business environment and long-term market activity
- Small team, short decision path, and low bureaucracy
- Flexible cooperation model: B2B or employment contract
- Hybrid schedule: 2–3 days on-site per week, remaining days can be remote
- Commute co-financing
- Benefit MultiSport card with co-financing
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