Senior Mechanical Engineer

4 days ago


Warrington, United Kingdom Amentum CMSI Full time

Amentum are the Design and Engineering partner for Sellafield under the Programme and Project Partners (PPP). This is a 20-year arrangement to deliver £7bn of major projects. We are looking to recruit high value expertise from across regulated and comparable sectors to work in a collaborative environment. PPP is delivering major projects, site wide improvements and provision of supporting services.

Our Nuclear team provides the front-end design and engineering capability across the PPP portfolio. Being part of the PPP Team offers a unique opportunity to drive change and innovation in engineering, safety, and delivery solutions in one of the most complex industrial sites in the UK if not the world.

The role of the PPP is to help to deliver a programme of nationally significant major infrastructure projects to the Sellafield site as quickly and safely as possible, creating new facilities that allow Sellafield to treat, manage and store waste safely for decades to come. Together, we are helping Sellafield to create a clean and safe environment for future generations.

As a result of an increasing portfolio of projects, an exciting opportunity has arisen for a Senior Mechanical Engineer to join the team in Birchwood, Warrington.

As a Senior Mechanical Engineer you should be able to demonstrate the following competencies:

* Experience in the use of Auto desk inventor

* Planning and co-ordinating engineering and design activities

* Developing and implementing engineering solutions for complex engineering projects, from concept design proposals through to design for manufacture, the full project life cycle

* Identifying design, statutory and regulatory requirements, and contributing to risk assessments

* Producing technical reports, technical specifications and scoping calculations

* Reviewing technical deliverables, including reports and drawings

* Presenting engineering solutions to stakeholders and as part of design reviews

As a Senior Mechanical Engineer you will already have

* Degree qualified in Mechanical Engineering or equivalent (e.g. HNC/HND with significant experience) in engineering discipline

* Attained/ or working towards chartered or incorporated status with a recognised professional body (e.g. IMechE)

* Experience of highly regulated environments would be advantageous

* Experience of crane/ lifting equipment design

* Familiarity with CE Marking, CDM, PUWER, LOLER, PED, Machinery’s Directive



  • Warrington, United Kingdom Orano Full time

    Senior Mechanical Engineer Orano Limited, Warrington, England, United Kingdom Responsibilities Delivering and managing technical studies/projects. Design of mechanical processes, from strategic and conceptual phases to detailed design and construction & commissioning phase support. Typical deliverables that will be issued: technical note, substantiation...


  • Warrington, United Kingdom Carrington West Full time

    One of the most well-known nuclear companies in the UK is looking for senior mechanical engineers to work on some of the most prestigious projects in the sector. This is a fantastic opportunity for a senior mechanical engineer to work on some massive project in defence/nuclear sector. Job Title - Senior Mechanical Engineer Location -  Warrington 2/3 days a...


  • Warrington, United Kingdom Carrington West Full time

    One of the most well–known nuclear companies in the UK is looking for senior mechanical engineers to work on some of the most prestigious projects in the sector. This is a fantastic opportunity for a senior mechanical engineer to work on some massive project in defence/nuclear sector.Job Title – Senior Mechanical EngineerLocation – Warrington 2/3 days...


  • Warrington, United Kingdom Morson Edge Full time

    Job DescriptionJob Title: Senior Mechanical Engineer Location: Warrington, Cheshire + Hybrid Working Arrangement Compensation: Competitive Salary + Benefits Role Type: Full time / Permanent The role As a Senior Mechanical Engineer, you'll have a role that's out of the ordinary. Youll manage the delivery of engineering and technical activities, through the...


  • Warrington, United Kingdom Rullion Engineering Cumbria Full time

    Job title: Senior Mechanical Engineer – 5 year minimum in the Nuclear sectorJob Type: PermanentStart date: February 2026Salary: CompetitiveLocation: WarringtonHours of work: Up to 37 hours per weekRole OverviewAs a Senior Mechanical Engineer at Orano Limited, you will deliver and manage technical studies and projects, providing expertise from conceptual...


  • Warrington, Warrington, United Kingdom Inter-Quest Full time £600,000 - £900,000 per year

    Location:Warrington, Cheshire, EnglandSalary:Market relatedCategoryMechanical EngineeringSector:Power, Nuclear and UtilitiesContract typePermanentConsultant:Julie LinegarJob Title: Senior Mechanical EngineerLocation: Warrington, Cheshire + Hybrid Working Arrangement Compensation: Competitive Salary + Benefits Role Type: Full time / PermanentThe roleAs a...


  • Warrington, United Kingdom Morson Edge Full time

    Job DescriptionJob Title: Senior Mechanical EngineerLocation: Warrington, Cheshire + Hybrid Working ArrangementCompensation: Competitive Salary + BenefitsRole Type: Full time / PermanentThe roleAs a Senior Mechanical Engineer, you'll have a role that's out of the ordinary. Youll manage the delivery of engineering and technical activities, through the...


  • Warrington, United Kingdom Morson Edge Full time

    Job Title: Senior Mechanical Engineer Location: Warrington, Cheshire + Hybrid Working Arrangement Compensation: Competitive Salary + Benefits Role Type: Full time / Permanent The role As a Senior Mechanical Engineer, you’ll have a role that’s out of the ordinary. Youll manage the delivery of engineering and technical activities, through the application...


  • Warrington, United Kingdom ASSYSTEM Full time

    Senior Mechanical EngineerLocation: WarringtonType: Staff / Contract (Inside IR35)Role Description The Mechanical Senior Engineer is required to deliver the mechanical work scope including production and checking reporting to a Principal Engineer. They will need to deliver detailed design work packs and supervise designers in the production of layout and...


  • Warrington, United Kingdom Belcan Full time

    Job DescriptionJob Title: Senior Mechanical Engineer – Gas ProjectsLocation: Warrington (Hybrid)Job Type: PermanentIndustry: Engineering – EPC Projects (Oil & Gas, Nuclear, Energy, Utilities, Chemicals, Food)About the RoleOur client, a leading engineering firm, is seeking a Senior Mechanical Engineer – Gas Projects to join their team on a permanent...