Senior Full-Stack Developer (.NET + React)

Quick Facts

• Role: Senior Full-Stack Developer (.NET + React)

• Location: Warsaw or Gdańsk (hybrid, 1 day/week in the office)

• Employment: B2B (start ASAP)

• Rate: up to 165 PLN net/hour

• Collaboration: long-term

Description

You will develop backend software in C#/.NET and implement the frontend in React, while analyzing and improving existing code (including legacy). The role also involves designing solution architecture and collaborating closely with testers, analysts, and the Product Owner in an Agile/Scrum environment.

Responsibilities

• Develop software in C# according to documentation

• Implement frontend features in React

• Analyze and evolve existing codebase, including legacy

• Design architecture for solutions

• Collaborate within a production team (testers, analysts, Product Owner) in Scrum

Requirements

• C#/.NET knowledge (.NET Framework, .NET Standard, .NET Core, .NET)

• React knowledge (18+)

• Debugging, profiling, and performance analysis skills

• Knowledge of DDD, Clean Code, and SOLID

• Knowledge of architectural patterns and asynchronous communication

• T-SQL and SQL Server Management Studio knowledge

• Visual Studio proficiency

• Minimum 5 years of experience building .NET applications

• Minimum 3 years of experience building React applications

• Willingness to grow competencies and share knowledge in the team

• Analytical thinking and ability to work with documentation

• Good organization, quality focus, and timely delivery

• Minimum secondary education; preferred higher education in IT

• English knowledge for speaking and writing (B2+)

Benefits

• Hybrid work (1x/week in the office)

• Long-term cooperation

• B2B employment starting ASAP

• Rate up to 165 PLN net/hour

• Opportunity to develop skills and share knowledge within the team