Senior Software Engineer C# / .NET (m/w/d) at New Monday GmbHNew Monday GmbH · Mannheim

Workplace: Remote, Hybrid, On-site

Posted: 2026-10-15

Skills: C#/.NET, CI/CDAbout this role ---------------For our client, a global leader in metrology and process control for semiconductor manufacturing, we are looking for a Senior Software Engineer C / .NET (m/w/d) for a permanent position.The team is based in Mannheim and has more than 25 years of experience building high-precision measurement systems. Their software looks down to the atomic level and turns what it sees into actionable data for the production of the world’s most advanced computer chips.In this role you will design, build and maintain distributed software where performance, concurrency and reliability matter. You will also help shape how the team builds that software.At a glance ---------------Start: ASAP or by agreement Contract: Contract, full-time Setup: Hybrid, 3 days remote and 2 days on-site in Mannheim Working language: English (German is a plus)Your tasks ----------Design, develop, test and maintain scalable applications in C and the .NET ecosystem Write clean, well-documented code following Clean Architecture and the team’s coding standards Work test-driven (TDD) and strengthen a culture of automated testing Build robust multi-threaded solutions using locking, interlocking and parallelism in .NET Turn business requirements into technical solutions together with product owners, architects and cross-functional teams Review code and give constructive feedback to keep quality and consistency high Mentor junior and mid-level developers and provide technical guidance Identify and drive improvements in architecture, performance, reliability and maintainability Troubleshoot and resolve complex issues across a distributed software stack Contribute to CI/CD and modern delivery practicesYour profile ------------Must haveDeep, hands-on knowledge of C 14 and modern .NET Several years of experience with multi-threaded programming Several years of experience with high-volume in-memory data processing Solid experience designing and implementing RESTful APIs Strong command of OOP…Sign in to see the original postingBrowse more developer jobs on RoleBurst