Software Engineers (C++/ADA) - Outside IR35 in Bristol

Infinity Systems Engineering Ltd. is aBristol basedSystems and Safety Engineering Consultancy focused on the successful delivery of engineering projects in multiple sectors.

Were a growing company at the forefront of cutting-edge defence engineering. Were hiring Software Engineers to deliver complex, safety-critical solutions across naval defence, advanced weapon systems, and aerospace platforms. Roles are available on both a contract and permanent basis.

What You\’ll Be Doing

• Design, develop, and maintain software using C++ and/or ADA

• Contribute to real-time, embedded, or safety-critical systems

• Produce high-quality, maintainable code aligned with defence and safety standards

• Participate in requirements analysis, software architecture, and design reviews

• Support integration, verification, and validation activities

• Work closely with Systems, Safety, and Test Engineers to ensure compliant delivery

• Produce supporting documentation in line with regulated engineering environments

What We\’re Looking For:

• Strong experience in C++ and/or ADA

• Background in embedded, real-time, or safety-critical software development

• Understanding of structured software development lifecycles (V-Model or similar)

• Experience working in regulated or high-assurance environments

• Ability to produce clear technical documentation

• UK nationality (or eligibility for UK security clearance)

Desirable Experience

• Defence, Aerospace, Naval, Land systems, or Nuclear environments

• Experience with standards such as DO-178, Def Stan, MISRA, or IEC 61508

• Knowledge of real-time operating systems (RTOS)

• Experience with low-level hardware interaction or embedded Linux

• Familiarity with tools such as Git, DOORS, MATLAB/Simulink, or static analysis tools