MESM CAT A2 and B Operator

Frazer-Nash Consultancy; Plymouth; On-site; GBP 50,000 - 76,000; Full time

Benefits offered by this job

Competitive salary with yearly reviews

25 days holiday + buy 5 days

Welcoming work culture

Flexible working

Job summary

Frazer-Nash Consultancy is seeking MESM Cat A2/Cat B Operators to join our UK portfolio of submarine safety and assurance projects. This role involves producing safety case documentation, maintenance scope optimisation, and supporting submarine lifecycle activities.

You will work in a flexible hybrid pattern across office, client sites and home, with opportunity for professional development in a prestigious defence engineering environment.

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).

Responsibilities

• 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 class of submarines.
• Conducting safety hazard analysis to inform the design of a 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.

Skills

MESM Cat A2/Cat B operator

Submarine industry experience

Safety case & Hazard analysis

ALARP risk management

Governance & assurance

Education

Incorporated Engineer or Chartered Engineer status

Working towards professional registration

Job description

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 30th June 2026, but early application encouraged.

If you answered yes to these questions, then Frazer-Nash Consultancy is interested in hearing from you. Read on for more information about our exciting opportunities and, if you’re up for the challenge,

We are a leading engineering, systems and technology consultancy. Through our meaningful innovations, our experts help 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 already have a great reputation and exciting portfolio of projects in the submarine domain. We are on the lookout for good people with transferable skills and experience to help us further grow this capability.

We have a number of roles available across our technical axis, based in various locations around the UK and each with its own unique offering.

What will you be involved in?

• 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 class of submarines.
• Conducting safety hazard analysis to inform the design of a 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.

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 into 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