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Senior Mechanical Design Engineer

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

Job Introduction

The Engineering Design Team provides engineering design support across NNL and in the wider nuclear industry. We cover all aspects of engineering design such as optioneering studies, concept design, detail design, manufacturing, testing and installation. Our expertise includes the supply of active research, development rigs and analytical equipment, and the modification of existing nuclear process plant.

The role of the Senior Mechanical Design Engineer is to provide engineering support to:-

  • The design, build, testing, development, commissioning and on-site installation of active rigs and analytical equipment to support scientific research and development work in the nuclear industry.
  • Production, checking and approval of drawings.
  • The modifications of existing active and non-active nuclear facilities (e.g. for upgrades, changes in feeds or process requirements).
  • The troubleshooting of existing nuclear equipment and plant as required.
  • To perform paper based concept designs, strategic optioneering and ad-hoc research to client specifications, collating results, analysing data and the generation of technical reports.

Role Responsibility


  • The innovative development of engineered solutions from concept through to installation on active and non-active plants for NNL or Customer facilities.
  • Liaising with safety assessors, facilities personnel, project stakeholders and other scientific/engineering disciplines as required providing fit for purpose engineered solutions.
  • Undertaking calculations to support / underpin the design and authoring technical reports and design memos.
  • Undertake the checking of engineering work performed by others.
  • Provide technical advice and guidance on issues appropriate to their working area.
  • Comply with all legislative, regulatory and company policy standards and procedures e.g. safety, quality, risk, security etc. applicable to the role.
  • Liaise with project managers to ensure that work is delivered to meet time, cost, quality and safety requirements.
  • Demonstrable experience in dealing with supply chain, from scoping requirements and authoring procurement specification through to initiation and progression of the procurement process overseeing contract delivery and inspection as necessary.
  • Keep abreast of developments in their own field and applying them to designated work packages.
  • Provision of technical support for technician and craft personnel.
  • Provide coaching to develop the skills and abilities of others for the benefit of the company.
  • Requirement to travel is expected, between NNL locations and customer locations.


The Ideal Candidate

Essential Skills/Qualifications:

  • Degree in Mechanical Engineering or closely related subject and a relevant level of experience.
  • Competency in AutoCAD / AutoCAD LT with the ability and flexibility to undertake own CAD work if necessary.
  • Experience of pressure systems
  • Knowledge of the legislative, regulatory, quality and environmental requirements relating to engineering development projects.
  • Excellent verbal and written communication skills, such that difficult concepts can be conveyed clearly and concisely to customers, regulators and key stakeholders.
  • Evidence of problem solving and seeking solutions.

Desirable Skills/Qualifications:

  • Chartered Engineer
  • Degree in Mechanical Engineering or closely related subject and a relevant level of experience.
  • Experience of Hazop or hazard reviews.
  • Good knowledge of nuclear industry and plant operations.
  • Strong and supportive team player.
  • Self-motivated, high energy contributor.
  • Questioning attitude.
  • Good organisational and planning skills. 

About the Company

We play a key role in the UK and global nuclear industry. That means reducing the cost of clean-up and decommissioning, maintaining critical skills and attracting talented new people to the industry. We're the only UK organisation with the skills, facilities and expertise to provide technical support to all aspects of the nuclear industry. What's more, we pride ourselves on offering quality, value and service to every one of our customers.

National Nuclear Laboratory

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