MESM CAT A2 and B Operator

Frazer-Nash Consultancy; Bristol; Hybrid; GBP 50,000 - 76,000; Full time

Benefits offered by this job

Competitive salary with yearly reviews

25 days holiday + opportunity to buy 5 additional days

Enhanced parental benefits

Company pension scheme

Paid membership fees to a professional institution

Cycle to work scheme

Job summary

A leading engineering consultancy is seeking experienced MESM CAT A2 and B Operators with a background in submarine design and safety. You will be involved in producing safety documentation, optimizing maintenance, and conducting hazard analysis. The role offers a competitive salary, flexible hybrid working options, and various benefits including enhanced parental leave and professional development support. Candidates must satisfy clearance criteria for UK National Security Vetting.

Qualifications

• Experienced MESM Cat A2/Cat B operators.
• Experience in submarine systems is essential.
• Knowledge of risk management techniques and safety assessments.

Responsibilities

• Produce safety case documentation for naval reactors.
• Optimise maintenance period scopes and support AUKUS.
• Conduct safety hazard analysis for submarine design.

Skills

Experienced MESM Cat A2/Cat B operators

Experience supporting submarine enterprise

Knowledge of nuclear safety cases

Experience in risk management and ALARP assessments

Familiarity with technical assurance/governance

Education

Incorporated Engineer or Chartered Engineer status

Job description

Title

MESM CAT A2 and B Operator

Salary range: £50,000 to £76,000 per annum depending on experience

Location: Glasgow, Plymouth, Bristol or Warrington – other locations may be considered

Working Pattern: We operate a flexible hybrid working pattern at Frazer‑Nash, with time split between the office, client sites and working from home

Closing date is 20th March 2026, but early application encouraged.

About the role

If you answered yes to the following questions, then Frazer‑Nash Consultancy is interested in hearing from you. We are a leading engineering, systems and technology consultancy that helps organisations make lives safe, secure, sustainable and affordable.

Our provision of high‑quality support to the Royal Navy’s submarine programme is a great source of pride, and our continued success in this area means that we are actively seeking high‑calibre experienced MESM operators. We have a number of roles available across our technical axis, based in various locations around the UK.

What will you be involved in?

Frazer‑Nash offers excellent opportunities for individuals with a background in submarine design, modification, operation, maintenance or safety. Examples of projects that our submarine domain consultants have worked on in the last 12 months include:

• Producing safety case documentation to underwrite the operation of the naval nuclear reactor plant.
• Optimising the scope for maintenance periods.
• Assessment of submarine commission and life extensions.
• Supporting AUKUS.
• Embedded client roles supporting all classes of submarines.
• Conducting safety hazard analysis to inform the design of future submarines.
• Providing technical oversight (transferable skills) to support civil nuclear power stations during planned maintenance outages.
• Providing SM SQEP experience to support facility engineering and help future‑proof critical shore‑side infrastructure.

Experience and qualifications

• Experienced MESM Cat A2/Cat B operators.
• Experience of working in the commercial industry in support of the submarine enterprise.
• Knowledge of submarine whole‑boat or nuclear safety cases and safety analysis techniques, including HAZID, hazard management, functional hazard assessment, categorisation and classification.
• Experience in risk management and reduction, including ALARP assessments.
• Familiarity with technical assurance/governance.
• Incorporated Engineer or Chartered Engineer status (or working towards this for our more junior roles).

Due to the nature of the work that Frazer‑Nash Consultancy undertakes, candidates will be required to undergo pre‑employment screening and must be able to satisfy clearance criteria for UK National Security Vetting.

Benefits

• Competitive salary with yearly reviews.
• 25 days holiday + the opportunity to buy 5 days.
• A company that has its heart in the right place and a welcoming work culture.
• Happy to talk flexible working.
• Enhanced parental benefits.
• Company pension scheme.
• Targeted professional development.
• Life assurance.
• Private healthcare membership.
• Bonus scheme linked to company performance.
• Paid membership fees to a professional institution.
• Support in attaining professional membership.
• Cycle to work scheme.
• Season rail ticket loan.
• And further optional benefits you can tailor to your personal requirements.