Senior Software Engineer C# / .NET (m/w/d)

Germany·MannheimEmployeesenior

Software EngineerSoftware Engineering

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Quick Summary

Overview

About 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# / .

Technical Tools

Software EngineerSoftware Engineering

About the Role

~1 min read

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.

Requirements

~1 min read

Deep, hands-on knowledge of C# 14 and modern .NET

Solid experience designing and implementing RESTful APIs

Strong command of OOP, SOLID, Clean Code, multi-layer architecture and TDD

Practical experience with automated testing: unit tests, component tests, mocking

Good working knowledge of UML

Proven experience in hardware-related software development

Degree in Computer Science, Software Engineering, Physics or a related field

Excellent English; you work well in international, cross-functional teams

Nice to Have

~1 min read

Real-time systems, hardware integration or optical sensor data processing (strong plus)
Legacy modernization, such as migrating a monolith to distributed, service-oriented systems or microservices
Distributed system design: event-based and object-based architecture, fault detection, causality methods, fault tolerance
Relational database design
Front-end development with .NET MAUI
German language skills

What We Offer

~1 min read

✓A contract position at a global technology leader in a growing industry

✓Technically demanding work at the intersection of software, hardware and physics

✓A hybrid setup with 3 days remote per week

✓An international team that values clean engineering and code quality

✓Real influence on architecture, and the chance to mentor other developers

✓Personal support from us throughout the hiring process

Send us your CV with your salary expectations and notice period. Unsure whether you meet every requirement? Apply anyway. We’d rather talk to you than miss a good match.