Babcock
Senior Mechanical Engineer
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Job Title: Senior Mechanical Engineer
Location: Hessle or Grimsby + Hybrid Working Arrangement
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF75616
Lead the delivery of nationally significant engineering programmes
At Cavendish Nuclear, we’re working to create a safe and secure world, together. If you join us, you can play your part as a Senior Mechanical Engineer at our Hessle or Grimsby sites.
Cavendish Nuclear is expanding in the Humber region and now recruiting within our new office in Grimsby, as well as current office in Hessle. This is an exciting opportunity to join a growing business supporting some of the UK's most important programmes across clean energy, nuclear decommissioning and defence.
The role
As a Senior Mechanical Engineer, you'll combine technical expertise with leadership responsibility, delivering innovative and compliant engineering solutions for complex projects. You'll play a critical role in influencing project outcomes, ensuring technical quality and supporting the successful delivery of work that contributes to national infrastructure and security.
Working alongside multidisciplinary teams, customers and suppliers, you'll provide technical assurance, solve engineering challenges and help develop engineering capability across the business. This role offers the opportunity to make a genuine impact while advancing your career within a growing and highly respected organisation.
Day-to-day, you will be:
- Leading the development and delivery of mechanical engineering solutions for complex projects.
- Coordinating with engineering teams, customers and suppliers to achieve successful project outcomes.
- Reviewing and approving technical designs, calculations and engineering documentation.
- Ensuring all engineering activities satisfy safety, quality and regulatory requirements.
- Providing technical leadership, solving engineering challenges and mentoring junior engineers.
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This is a full-time, permanent opportunity working 37 hours per week, with hybrid working arrangements available and an expectation to be onsite three days per week at our Hessle or Grimsby office.
Essential experience of the Senior Mechanical Engineer:
- Proven experience delivering mechanical engineering solutions on complex projects.
- Experience working with and coordinating multidisciplinary engineering teams.
- Strong understanding of the mechanical engineering lifecycle from design through to delivery.
- Experience reviewing technical designs, calculations and engineering documentation.
- Knowledge of safety, quality and compliance requirements within regulated industries.
Qualifications for the Senior Mechanical Engineer:
- HND or higher qualification in Mechanical Engineering or a related engineering discipline.
Security Clearance
The successful candidate must be able to achieve and maintain Standard (BPSS) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK
What we offer
- Generous holiday allowance
- Matched contribution pension scheme, with life assurance
- Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
- Employee share scheme
- Employee shopping savings portal
- Payment of Professional Fees
- Reservists in the armed forces receive 10-days special paid leave
- Holiday Trading is a benefit that allows UK Cavendish employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. This Window opens February through to March annually.
- ‘Be Kind Day’ enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity
- Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
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Cavendish
We’re Cavendish Nuclear — a team of c5,000 specialists and a core part of Babcock International Group.
Here, you’ll be part of something bigger. Across clean energy, defence, and civil decommissioning, your work will contribute to projects that are critical to energy security and national protection. Together, we’re shaping a future that lasts — not only through the impact we make, but through meaningful careers that respect your work-life balance.
Join us and discover how far we can go, together.
We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject header ‘Reasonable adjustments requirement’. We’re committed to building an inclusive culture where everyone’s free to thrive. We are happy to talk about flexible working – please ask about alternative patterns of work at interview.
Closing date: 09/09/2026
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