Principal Systems Safety Engineer

Expleo Group

Principal System Safety Engineer responsible for hardware safety in programmable electronic systems at Expleo. Focused on comprehensive hardware safety activities, ensuring compliance with industry standards.

Posted 6/13/2026full-timeBristol • 🇬🇧 United KingdomLeadWebsite

About the role

Key responsibilities & impact

Responsible for the technical ownership of hardware safety activities including Hardware‑Focused Safety Responsibilities.
Hands‑on schematic reviews, ensuring hardware designs meet functional safety and integrity requirements.
Providing safety requirements input directly into hardware design, including programmable elements and PLC‑based architectures.
Managing and performing Hardware FMEDA activities to IEC 61508, including component‑level failure rate justification and diagnostic coverage assessment.
Supporting and guiding low‑level hardware development teams, ensuring safety is embedded throughout the lifecycle.
Producing Safety Case Reports, arguments and supporting evidence.
Developing and maintaining Hazard Logs, Hazard Analyses and associated documentation including Cost Benefit Analysis.
Conducting safety analyses such as FHA, FMEA, FTA, BowTie, and supporting wider system safety assessments.
Assessing supplier safety compliance, ensuring alignment with legislative, contractual and functional safety requirements.
Providing safety input to PDR, CDR and lifecycle engineering reviews.
Acting as a Safety SME across multidisciplinary systems projects.

Requirements

What you’ll need

Valid SC Clearance.
Sole UK Nationality.
Must demonstrate strong capability in:
Hardware & IEC 61508 Competence (Critical Requirement)
Extensive experience in hardware safety assurance, including:
Schematic interpretation and review
Programmable electronic hardware (custom logic, PLCs, PE devices)
Hardware requirements derivation and traceability
FMEDA development and review
Understanding of failure modes, diagnostic coverage and architectural constraints
Utilisation of IEC 61508 and Def Stan 00-55 SIL determination
Ability to work hands‑on with teams.
Safety Engineering Competence.
Strong background in hazard and risk management, including Hazard Identification, Hazard Logs, and Hazard Analysis.
Experience producing Safety Arguments and supporting Design Authority approvals.
Working knowledge of legislative compliance, including AMC/AAMC tailoring.
Experience assessing supplier safety compliance against contractual and regulatory requirements.
Proficiency in safety analysis techniques such as FTA, BowTie, FHA, FMEA.

Benefits

Comp & perks

Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges
We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects
Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses
Competitive company benefits
Always working as one team, our people are not afraid to think big and challenge the status quo
As a Disability Confident Committed Employer we have committed to:
Ensure our recruitment process is inclusive and accessible
Communicating and promoting vacancies
Offering an interview to disabled people who meet the minimum criteria for the job
Anticipating and providing reasonable adjustments as required
Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

hardware safety assuranceschematic interpretationprogrammable electronic hardwareFMEDA developmentfailure modes understandingdiagnostic coverage assessmentIEC 61508Def Stan 00-55 SIL determinationsafety analysis techniqueshazard analysis

Soft Skills

strong capabilityability to work hands-onguiding teamsstrong background in hazard managementcommunication skillscollaborationproblem-solvingattention to detailorganizational skillsleadership

Certifications

valid SC Clearance