We are looking for a Senior Software Test Engineer, who will be responsible for designing, developing, and maintaining software solutions for instrument control systems. You will work closely with hardware engineers, development engineers, and other software developers to ensure seamless integration and functionality of our products. Responsibilities: Develop and maintain software for instrument control systems. Troubleshoot and debug software issues. Implement software solutions ensuring reliability and performance. Participate in the design and assembly of required test hardware solutions. Participate in code reviews and contribute to continuous improvement of software development processes. Document software designs, code, and testing procedures. Collaborate with cross-functional teams to define software requirements and specifications. Skills & Experience: Level 6 or 7 qualification in Engineering, Computer Science, Software Engineering or a related field. Minimum of 5 years experience in relevant role. Skilled in programming languages including as C# and Python. Experience with instrument control and hardware interfaces such as GPIB, TCP/IP and RS232. Good understanding of test equipment such as optical spectrum analysers and real-time oscilloscopes. Experience with software testing, debugging and validation. Experience of software development methodologies and tools. Experience with version control systems (e.g., Git). Experience of test system design and assembly. Experience of training and mentoring junior engineers. Good understanding of electrical engineering or physics. Excellent problem-solving and analytical skills. Knowledge of Azure and databases would be advantageous. Ability to work effectively in a team environment. Strong communication skills.