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Salary
≈ $59k – $95k per year (Estimated)
Location
In office (Corsham)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 23, 2026. First seen by Alion on Oct 22, 2026. MASS scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Expert countermeasures, secure software development, and UK sovereign IT services. We provide the technical and operational expertise required for high-threat environments.

Facilities Management Supervisor Engineer - Corsham (SNL13)

  • £45,000 - £55,000 + Overtime
  • 25 days annual leave with the option to buy and sell up to 5 additional days per year
  • Discretional Annual bonus scheme subject to Company and individual performance
  • Flexible working
  • Employee well-being allowance
  • Employee lifestyle discount benefit portal
  • Private medical insurance
  • Pension scheme allowing additional contributions via salary sacrifice
  • Electric and Hybrid Car leasing scheme
  • Purchase of a new bike through the Cycle to Work Scheme which results in tax and national insurance savings
  • Opportunity to partake in Cohort Plc share and saving schemes

You will be responsible for maintaining the professional standards of the MASS FM delivery team and the Health and Safety aspects of FM work conducted. You will be the main contact for all technical matters with the Site Facility Manager.

You’ll support us by

The invaluable experience you’ll bring, to help us achieve more.

  • Work with the MASS FM Contracts Manager and Authority Site Manager with respect to all planned and preventative Mechanical, Electrical, Grounds and Civil Engineering Maintenance.
  • Provide technical advice to the MASS FM Contracts manager & Authority Site Manager to support the definition of additional contract work.
  • Ensure that planned and reactive maintenance work is completed to the contractual standard as per schedule 9.
  • Manage and oversee the technical work of the FM team.
  • Line Management of the Principle Mechanical and Electrical Maintenance engineers
  • Ensure the professional standards of the FM team are upheld, including setting training plans and periodic review with the Authorising Engineer to maintain skills needed to perform Authorised Person (AP) duties.
  • Review the Configured Programme of Planned Maintenance and the Configured Major/Minor Equipment Register with the Authority Site Manager annually. Including support works system.
  • Verify and certify contractual performance metrics and service Level Agreements have been achieved.
  • Work with the FM contract manager to organise specialist sub-contractor contracts on an annual basis.
  • Attend the Monthly FM Audit Meeting with the Authority.
  • Attend monthly plant room and facility rounds and arranging for rectification of any faults found.
  • Distribute low value work orders to site team for rectification (CCC 11s)
  • Provide continuous review of all management processes to ensure they remain efficient, effective and continue to reflect best practice.
  • Create/ review Risk Assessments and Method Statements (RAMS) for planned maintenance and reactive works.
  • Co-ordinate all site project works including life cycle replacement.
  • Oversee all site H&S activities reference FM team works.
  • Act as the NEBOSH Subject Matter Expert
  • Responsible person Legionella
  • Be part of FM on call rota
  • Be available to work minimum of 12 weekend for maintenance shuts downs.
  • Any other tasking as required by the FM contracts manager.

Essential:

  • City & Guilds 2365 parts 2 and 3 or equivalent
  • Authorised Person for High Voltage / Low Voltage systems.
  • Legionella responsible person
  • City and Guilds Pat testing 2377
  • Be proficient in office administration skills with a good working knowledge of Word, Excel and PowerPoint Microsoft Word/Excel.
  • UK Driving Licence.
  • At least 5 years FM maintenance experience with supervisory and line management experience being an essential requirement for this role.

Desirable:

  • Confident Mechanical Disciplines.
  • NEBOSH, General Certificate
  • Knowledge HVAC systems
  • Knowledge of F-Gas Regulations & responsibilities

Our non-negotiable:

Due to the highly secure nature of the projects, you will be involved with, you must be eligible to work in the UK and be eligible to undergo and maintain UK government SC Security Clearance.

Who is MASS?

MASS is an independent, global technology company, trusted by highly secure organisations to provide advanced, digital services that manage data and keep information safe. With our heritage in defence, we offer robust solutions to sectors where security expertise is essential. We work in partnership with customers, using skilled, technical experts. We think innovatively to provide tailored, agile and resilient solutions that secure advantage, so you’re ready for digital transformation.

MASS is an equal opportunities employer; we know that our people are smart, skilled and motivated and in return we provide a friendly workplace where everyone is valued and has the chance to make an impact.

Apply today to see how working for MASS could work for you!

Skills

General Skills - MAINTENANCE, General Skills - EXCEL

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