Location: Bristol, Burton-on-Trent, Glasgow, or Leatherhead  

Salary: £65,000 – £75,000 (depending on experience)  

Closing Date: 30th March 2026 – we encourage early applications  

Would you like to contribute your skills to advancing high-integrity digital systems? 

Do you want to apply your skills and experience to shape the future of high-integrity digital systems? 

At Frazer-Nash, we support clients with their toughest challenges - from advanced aerospace programmes to national defence capability. We help them navigate complexity, assure safety, and deliver systems that must work first time, every time.  

We’re hiring a Senior Complex Systems Engineer to join our Digital Systems Assurance team. If you secure this role, you’ll contribute to nationally significant programmes, work with the latest safety-critical systems, and grow your impact as a trusted technical leader 

Why This Role?  

• Work on some of the UK’s most complex and innovative systems  

• Collaborate with MOD, OEMs, Primes, and regulators  

• Shape next-generation and in-service technologies  

• Inform both technical direction and strategic decisions 

• Thrive in a consultancy environment solving real-world challenges  

What You’ll Do  

• Oversee the development and assurance of high-integrity, safety-critical systems 

• Guide clients through regulatory standards (e.g. ARP4754A, DO-178C, DO-254)  

• Apply MBSE and architecture modelling to support design and assurance strategies  

• Engage senior stakeholders to define and deliver effective solutions  

• Contribute to business development and major national programmes  

We’re Looking for Someone With  

• Experience developing or assuring safety-critical systems (typically software and / or hardware in aerospace, defence, or similar)  

• Knowledge of standards such as ARP4754A, DO-178C, DO-254, DO-326A, IEC 61508, or MOD DEF STANs  

• Solid systems thinking and experience with MBSE tools (e.g. Cameo, Sparx EA, SysML/UML) 

• Clear communication skills and a strategic mindset  

Desirable:  

• CEng (or working towards) / ESEP / CSEP 

• Relevant engineering or technical degree  

• Experience with MOD acquisition frameworks or OEM/Prime environments  

• Engineering consultancy background or experience 

What’s in It for You?  

• Flexible Working: We are happy to discuss flexible working arrangements.  

• Generous Holiday Entitlement: 25 days (plus bank holidays), with a holiday purchase scheme.  

• Company Pension Scheme  

• Targeted Professional Development  

• Life Assurance  

• Private Healthcare Membership  

• Performance-Linked Bonus Scheme  

• Paid Membership Fees to a Professional Institution  

• Support in Attaining Professional Membership  

• Cycle to Work Scheme  

• Share Purchase Scheme  

• Season Rail Ticket Loan  

Security Clearance  

Due to the nature of our work, candidates must meet UK National Security Vetting criteria.