Job Title: C Developer Location: Oxford (Hybrid – 1-2 days onsite per week) Type: Full-time | Permanent Salary: £55,000 – £65,000 Opus have partnered exclusively with a client in Oxford who are looking for a C Developer to join a growing engineering team in Oxford. This is a hybrid role for someone who thrives in technically challenging environments and wants to make meaningful contributions to an expanding company who built software used all over the globe. You’ll be part of a collaborative team with the autonomy to take ownership of projects, influence design decisions, and help shape best practices as they scale. What you’ll be doing: Designing, developing, and optimising high-performance C applications Working across the full software lifecycle, from concept to deployment Driving architectural discussions Collaborating with cross-functional teams to integrate software with hardware and broader system requirements Maintaining clean, maintainable, well-documented codebases What experience is needed: 3 years’ professional experience with C (preferably in systems, embedded, or Linux environments) Strong understanding of low-level memory management, multithreading, and concurrency Experience debugging complex systems and working close to the hardware Comfortable with version control (e.g., Git), CI/CD practices, and agile workflows Proactive communicator who enjoys solving complex technical challenges Bonus experience: C++ or Python experience Familiarity with RTOS, kernel modules, or device driver development Experience with performance profiling or static analysis tools Exposure to networking protocols, ARM architecture, or FPGA integration In return, you'll get a salary of up to £65k, plus flexible working, lots of career progression, 25 days holiday, lots of L&D opportunities and more! To find out more, contact me on Danny.Moore@opusrs.com - you'll need to be based within a commutable distance to Oxford with the right to work in the UK to be considered for this position.