iO Associates
Safety Engineer - Defence Maritime

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Principal Safety Engineer
Location: Southwest London
Working pattern: Hybrid (3 days on site)
Salary: up to £75,000
The Opportunity
As a Principal Functional Safety Engineer (Marine), you'll lead safety assurance activities across the design, development, and in-service support of advanced platform management / control infrastructure for naval vessels (surface and sub-surface environments).
You will be a key member of the Safety Engineering team, working closely with engineering and programme stakeholders to deliver robust safety arguments and high-quality assurance outputs for mission-critical operations.
What you will be doing
- Derive safety activities and delivery plans aligned to programme milestones and safety requirements.
- Lead safety assurance activity to ensure customer and derived safety targets are achieved through system design (hardware, software, firmware).
- Lead/participate in safety audits at internal and external design reviews and safety governance forums.
- Ensure technical documentation is produced to a high standard in line with company/customer processes.
- Lead analysis that influences engineering design decisions and proposed solutions.
- Present clear, evidence-based safety arguments to internal and external stakeholders to support safe decision-making.
- Collaborate within multi-disciplinary teams (systems, hardware, software, ILS, project management, customer and supplier engineering).
- Maintain awareness of relevant standards and best practice to drive continuous improvement.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What we are looking for
- Relevant experience in a safety-related engineering environment.
- Experience leading technical activities (work-package leadership, assurance leadership, or equivalent).
- Understanding of standards such as IEC 61508 and defence-sector safety standards (e.g., Def Stan 00-056) (Essential)
- Experience assuring COTS processing-equipment-based systems and/or high-integrity software.
- Ability to understand hardware/software failure modes, causes and effects.
- Experience with safety/reliability methods: hazard identification/analysis, FMECA, FTA, FFA.
- Experience with risk assessment techniques and developing ALARP justifications.


Get help with your application
Your very own career expert that helps elevate your application to the next level.
If you're ready to join a global leader within defence, challenging yourself on highly complex and sensitive projects then this could be the opportunity for you!
Due to the nature of this role, you must be a Sole UK National with active SC clearance, or with willingness to obtain SC Clearance.
Apply with your CV and if you're a match, we can set up a quick call to discuss further.
Benefits summary:
- Flexible/hybrid working options (including compressed fortnight option)
- Private healthcare / cash health plan
- Holiday buy/sell
- Performance-related bonus
- Training, mentoring, and career development opportunities
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