Sr. VxWorks Developer

Senior VxWorks / DO-178C Developer

Number of positions: 4

Location: Remote – UK based

Contract: Inside IR35

Duration: ASAP – September 2027

Pay rate: £474 per day, inclusive of holiday pay

Umbrella equivalent: £550 per day

CPL is supporting a client with the appointment of four experienced Senior VxWorks / DO-178C Developers for a long-term embedded software engineering programme. We are looking for senior engineers with strong safety-critical embedded development experience and, critically, proven DO-178C certification experience.

Key Responsibilities

• Design, implement and validate embedded software, including Board Support Packages (BSPs), for custom and COTS embedded hardware systems.


• Design, implement and test software drivers for peripheral devices used within embedded hardware environments.


• Develop hardware test code and support the bring-up and validation of custom embedded hardware.


• Produce detailed technical and software design documentation.


• Support technical planning, including statements of work, effort estimation and identification of required engineering skills.


• Troubleshoot complex technical issues across embedded software and hardware environments.


• Work independently while collaborating with project managers, engineers and wider technical teams.


• Provide technical mentoring and support to more junior engineers where required.

Essential Skills & Experience

• DO-178C certification experience is mandatory.


• Minimum 7 years’ software development experience, including at least 5 years working with DO-178C development.


• Deep understanding of DO-178C standards, particularly DAL A certification.


• Strong experience of requirements-based testing, verification and validation, and structural coverage.


• Experience developing safety-critical and/or avionics software.


• Strong C programming skills.


• Experience with low-level embedded software development, including BSPs and device drivers.


• Experience with embedded development environments such as Workbench or Eclipse.


• Experience with custom embedded hardware bring-up.


• Development experience across embedded processor architectures such as PowerPC, MIPS, x86 and ARM.


• Familiarity with tools such as DOORS, Polarion and Jira, or equivalent.


• Strong communication, problem-solving and stakeholder-facing skills.

Desirable: Experience with multi-core and virtualisation architectures, Simics and/or certification-focused environments.

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