Airswift

Senior C#/.NET Engineer (Hardware Control Systems)

• Workload: Full time hours
• Setup: Freelance (Daily Rate / Limited Company / Umbrella / Sole Trader)
• Sponsorship: Not Provided
• Location: Germany (approximately 2 days per week onsite)

Our client is seeking a Senior C#/.NET Engineer to improve the reliability, maintainability and modular architecture of a high-precision optical metrology platform used within semiconductor manufacturing.

Key Responsibilities:

• Design, develop, test and maintain control software using C# and .NET.
• Drive the modularisation and modernisation of a mature production codebase.
• Develop robust multi-threaded applications with strong concurrency control, locking and parallel processing.
• Apply Test-Driven Development (TDD) and enhance automated test coverage, including integration with physical hardware.
• Conduct code reviews and mentor software engineers.
• Investigate and resolve complex issues spanning both software and hardware environments.
• Collaborate within an Azure DevOps-based development ecosystem.

Must-Have Skills:

• Extensive commercial experience with C# and .NET in production environments.
• Experience developing software that controls, interfaces with, or acquires data from physical hardware.
• Strong understanding of OOP, SOLID principles, design patterns and Clean Code practices.
• Proven TDD and automated testing experience.
• Expertise in multi-threading, synchronisation, locking/interlocking and parallel programming within .NET.
• Demonstrable experience refactoring and modularising legacy systems.
• Strong code review and mentoring capabilities.
• English communication skills at B2 level or above.
• Ability to travel regularly to Mannheim.

Nice-to-Have:

• Real-time systems and deterministic timing experience.
• Hardware integration involving motion control, sensors, actuators, drivers or instrumentation.
• Optical sensing, signal processing, spectroscopy, interferometry or imaging experience.
• Background in semiconductors, metrology, industrial automation, precision instrumentation, testing & measurement or medical devices.