Senior Full Stack Developer (.NET / React)

Quick Facts

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

• Work model: Hybrid (2 days/week in Kraków office)

• Collaboration: B2B or Employment Contract (UoP)

• Pay range: 180–260 PLN/h (B2B) or competitive terms on UoP

Description

Join a team developing modern enterprise business applications. You will have a real impact on system architecture, implementing new features, and improving software delivery processes. The role combines backend and frontend work with a focus on code quality, automation, and modern DevOps practices.

Responsibilities

• Design and develop applications using .NET and React

• Build and enhance efficient, scalable APIs

• Co-create system architecture and propose technical improvements

• Implement frontend changes with emphasis on UX, application quality, and stability

• Collaborate with business and technical teams to analyze requirements

• Participate in CI/CD process automation and DevOps activities

• Design and optimize database solutions

• Maintain high code quality using best practices and design patterns

• Support users and troubleshoot issues in production environments

Requirements

• Minimum 7 years of commercial experience building applications in the .NET ecosystem

• Very good knowledge of C# and ASP.NET Web API

• Experience working with React

• Knowledge of SQL Server databases and T-SQL

• Experience with CI/CD and DevOps practices

• Knowledge of the complete software development lifecycle (SDLC)

• Ability to design high-performance and scalable solutions

• Experience in complex production environments

• Good English for daily international collaboration

Benefits

• Long-term collaboration on strategic IT projects

• Real impact on solutions used at scale

• Hybrid model (2 days/week in the Kraków office)

• Collaboration via B2B or UoP

• Competitive compensation

• Work in an international environment using modern technologies

• High independence and participation in architectural decision-making