Salary: 60.000 - 80.000 € per year Requirements: A degree in a STEM-related field or equivalent technical training with relevant experience Strong proficiency in C# within a Microsoft development environment, such as Visual Studio Solid knowledge of hardware and measurement techniques, ideally with experience in the semiconductor industry A proactive attitude toward exploring new technologies and programming languages Fluent English is essential, as our team operates internationally Team-oriented, communicative individual who can work independently and with great attention to detail Responsibilities: Design and develop advanced, high-level device software based on a SECS/GEM-compatible framework (C#) Independently manage customer interface coordination and make necessary adjustments Assist with software commissioning, which may include global travel for on-site customer support (approximately 10% of the time) Maintain close communication with both customers and service technicians, offering solutions to technical challenges and handling any complaints Design innovative software solutions and execute them effectively Oversee version control and documentation, ensuring they are managed efficiently within a structured software development process Technologies: C# Hardware Support Visual Studio More: We at Optimus Search are collaborating with a well-established technology company based in Giessen, recognised for its long-standing contribution to the semiconductor industry. We specialise in the development of micromechanical and optoelectronic components, playing a key role in advancing plasma processes and laser-based analytical methods used for high-precision material characterization. Our collaborative environment values technical excellence, innovation, and scientific curiosity. We are now searching for a C# Software Developer to add to our growing team of specialists! last updated 6 week of 2026