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Mechanical Plant Engineer

Please Note: The application deadline for this job has now passed.

Job Introduction

Job Description for Mechanical Plant Engineer:

There’s never been a more exciting time to be part of the nuclear sector. New opportunities are being created all the time. At NNL, you’ll be in the ideal place to capitalise on this momentum, face new challenges and develop a long, successful and meaningful career.

We’re an organisation that’s here to experiment and push the limits of what’s possible. So, if you’re keen to excel in your chosen field, this is the place to do it. Because at NNL, anything is possible.

The Plant Engineer (Mechanical) will report to the Engineering Manager, they shall provide assurance that all Mechanical activities are being undertaken in a safe and compliant manner, to meet all requirements of the Nuclear Site Licence and all Regulatory and Legislative purposes. The ideal candidate will be experienced in working in a regulatory capacity; detail oriented and is able to work to stringent deadlines.

Role Responsibility

Main Responsibilities for Mechanical Plant Engineer:

  • Responsible for ensuring compliance to the relevant sites engineering procedures associated with disciplined operations and maintenance.
  • Responsible for constantly challenging the mechanical maintenance processes on plant and ensuring plant is operated and maintained to appropriate standards.
  • Primary interface with Design team on mechanical changes to plant, including reviewing design change packages and installation and testing procedures.
  • Responsible for reviewing of equipment parameters, trend analysis and improvements of plant, not only by trending but also industry wide best practice information. 
  • Provide advice on ageing plant and carry out appropriate condition assessment techniques to support NNL’s Asset Care program.
  • Responsible for undertaking small scale Infrastructure improvement projects. 
  • Responsible for undertaking regular self-audits and task observations within their area of responsibility ensuring EHSS&Q standards are being maintained according to set procedures.
  • Attend any forums (internal or external) as requested to keep abreast of best practices around other NNL Laboratories, responsible for sharing and implementing any learning.
  • Assist the Engineering Manager in delivering the company values, they shall be expected to maintain a forward vision to develop and implement the best solutions in the best interest of the business.
  • Provide assurance that all events or incidents within their area of responsibility are investigated thoroughly; ensure appropriate corrective actions have been discharged in a timely manner throughout the lifecycle of the event.
  • Assist with the coaching and mentoring of the Engineering team as and when required.

The Ideal Candidate

Essential Criteria for Mechanical Plant Engineer:

  • Degree Qualified (mechanical discipline) or HND in an equivalent discipline. Relevant experience may be considered in lieu of stated qualification.
  • Strong communications skills, ability to communicate key information with customers, suppliers and stakeholders.
  • Ability to demonstrate conservative decision making, even in pressure situations.
  • Demonstrable knowledge of operational and maintenance requirements.
  • Evidence of self-motivation with demonstrable levels of drive, energy and resilience.
  • Ability to interface on a technical level with Design and Capability teams.
  • Requirement to become appointed as Safety Supervisor.
  • Required to become Authorised Person Mechanical.
  • Requirement to become appointed to the role of Senior Authorised Person Mechanical.
  • Required to become PMP Manager.
  • Requirement to become appointed as Sub Contractor Supervisor.
  • Ability to obtain SC level security clearance (this includes but is not limited to identity, employment, financial and criminal record checks plus 5 years’ worth of UK residency).

Desirable Criteria for Mechanical Plant Engineer:

  • Hold IOSH Managing Safely or equivalent as a minimum qualification.
  • A thorough awareness of nuclear, conventional safety and security requirements applicable to their area of responsibility.
  • Ability to demonstrate supervisory experience for operations undertaken within a nuclear plant.
  • Good general safety case awareness with demonstrable knowledge of nuclear safety mechanisms (SM), safety related equipment (SRE) and Safety Features (SF).
  • Ability to interface on a technical level with Design and Capability teams.

About the Company

NNL is an incredible place to work A place where people do things that have never been done before A place where people push boundaries to further themselves, the business, and society as a whole.

This is a place where personal and professional opportunities are limitless. If you want to change the world, if you want to tackle climate change, if you want to help advance medical science, if you want to help put things in space, if you want to answer the big questions, if you want to work with extraordinary materials, if you want to meet great people, learn new skills, challenge yourself, work flexibly, and build a long successful career with the power to make a real impact… you can do it all here.

NNL has a vision for Equality, Diversity, and Inclusivity (ED&I) where NNL aims to be an inclusive workplace that attracts diverse talent through transparent and equal policies and procedures. We want you and the diverse mix of people that we employ, customers that we service, and stakeholders that we influence to feel valued. We encourage a workplace culture where everyone can thrive with a sense of belonging.

Recruitment Agency Notice


We operate a strict Preferred Supplier List (PSL) for the provision of recruitment services. Only agencies on our PSL may provide CVs and only when the role is released to them by our recruitment team. We will not accept unsolicited CVs from suppliers not currently on our PSL. We explicitly reserve the right to add candidate details from unsolicited CVs from non-PSL agencies into our own candidate database and to pursue/hire such candidate(s) without any obligation, financial or otherwise, to the agency concerned.

National Nuclear Laboratory

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