Senior.NET Developer

About the Position

We're seeking a Senior.NET Developer with 5+ years experience to join our fintech team in Warsaw, Poland, building scalable backend systems.

Responsibilities

• Design and develop backend services in.NET (6+)
• Build and maintain APIs for payment and settlement systems
• Contribute to architectural decisions and perform code reviews
• Ensure performance, security, and stability of solutions
• Integrate with external systems (banks, payment operators)
• Mentor junior developers
• Collaborate with analysts and the QA team

Requirements

• 5+ years of commercial experience in C# and .NET (including.NET Core/.NET 6+)
• Strong knowledge of ASP.NET Core and REST API design
• Practical experience with Entity Framework and efficient query writing
• Experience with SQL Server or PostgreSQL
• Ability to write unit and integration tests
• Knowledge of SOLID, design patterns, and Clean Code
• Experience working with Git and CI/CD pipelines
• Independence, responsibility for code quality, and good team communication

We Offer

• Real impact on global projects used by teams worldwide
• Remote work with one day per month in the Warsaw office
• Stability and growth: access to cloud certifications, training budgets, and a clear career path
• Private medical care and a sports card

About the Company

CodeTalent is a leading fintech company dedicated to developing innovative payment and settlement systems. We pride ourselves on our collaborative environment and commitment to excellence.

Application

Interested candidates should submit their resume and a cover letter detailing their relevant experience.