Mechanical Engineer

Job Title: Mechanical Engineer

Location: Hessle or Grimsby + Hybrid Working Arrangements

Compensation: Competitive Salary + Benefits

Role Type: Full time / Permanent

Role ID: SF75619

Join a Growing Engineering Team in the Humber Region

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 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 our current office in Hessle. This is an exciting opportunity to join a growing team supporting some of the UK's most significant programmes across clean energy, nuclear decommissioning and defence.

The role

As a Mechanical Engineer, you'll have the opportunity to work on some of the UK's most complex and nationally significant engineering programmes across clean energy, nuclear decommissioning and defence. You'll develop innovative engineering solutions that support safe, compliant and efficient project delivery while making a direct contribution to nationally important programmes.

Working within a collaborative engineering environment, you'll play a key role in solving technical challenges, supporting project success and helping to develop future engineering capability. This role offers excellent opportunities for professional growth, exposure to diverse projects and the chance to make a real impact within a growing business.

Day-to-day, you will be:

• Delivering mechanical engineering solutions for complex engineering programmes.
• Producing and maintaining technical calculations, drawings and engineering documentation.
• Collaborating with multidisciplinary teams, customers and suppliers to achieve successful project outcomes.
• Ensuring designs comply with relevant safety, quality and regulatory requirements.
• Supporting technical problem-solving activities and mentoring less experienced engineers where appropriate.

This is a full-time, permanent opportunity offering 37 hours per week. You'll benefit from a hybrid working model, spending three days per week onsite at either our Hessle or Grimsby office while maintaining flexibility to support a healthy work-life balance.

Essential experience of the Mechanical Engineer:

• Experience delivering mechanical engineering solutions on complex projects.
• Ability to work effectively with multidisciplinary teams and key stakeholders.
• Knowledge of mechanical design principles, engineering calculations and technical documentation.
• Experience working within highly regulated or high-hazard industries.
• Strong communication, problem-solving and mentoring skills.

Qualifications for the 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.

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 View email address on energyjobsearch.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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