.NET Backend Developer with SQL Server

Emagine is looking for a strong backend developer with experience in .Net and SQL Server to build and upgrade API backends.

Basic information:

• Full Remote Role

• Long Term B2B Contract

• Rate: 160 pln/h + VAT

Main Responsibilities:

• Take ownership of API backend development using .NET / C#.

• Read and understand existing legacy application logic and translate it into modern, well-structured API endpoints.

• Lead and support the upgrade of SQL Server (from 2007 to 2025) within the project.

• Design, optimize, and maintain complex SQL queries, stored procedures, and database structures.

• Ensure high performance and scalability of the backend and database layer.

• Work independently on backend, automation, and database-related tasks (no dedicated DBA in the team).

• Contribute to backend architecture decisions and system improvements.

Key Requirements:

• Strong experience with .NET / C# (backend/API development).

• Strong hands-on experience with Microsoft SQL Server.

• Proven experience in:

  • Performance tuning

  • Writing complex queries

  • Stored procedures

  • Database optimization

• Experience working on modernization of legacy systems.

• Strong background in automation.

• Ability to work independently and take full ownership of backend and database responsibilities.

• Minimum experience:

  • Mid-level: 5+ years

  • Senior: 10+ years

Nice to Have:

• Experience with legacy technologies (e.g., Classic ASP / VBScript).

• Experience with large-scale database upgrades or migrations.