Mechanical Engineer jobs in United Kingdom

Location: Flexible + Hybrid Working Arrangement

Compensation: Competitive Salary + Benefits

Role Type: Full time / Permanent

At Cavendish Nuclear we’re working to create a safe and secure world, together, and if you join us, you can play your part as a Senior Electrical, Control and Instrumentation Engineer at Cavendish Nuclear, based at one of our key locations – Moor Row (Cumbria), Warrington (Cheshire), Leicester (Leicestershire) or Bristol.

As a Senior Electrical, Control and Instrumentation Engineer, you lead the design, integration and maintenance of high-integrity EC&I systems across nuclear facilities. This is a career-defining opportunity to deliver engineering excellence in a safety‑critical environment, where your work directly supports national defence, clean energy and the future of sustainable infrastructure.

Day‑to‑day, you’ll

• Lead the delivery of robust EC&I designs that meet nuclear safety, reliability and regulatory standards
• Collaborate with multidisciplinary teams to support strategic nuclear programmes
• Interface with internal stakeholders such as project managers and commissioning engineers, and external partners including regulators and clients
• Ensure all engineering outputs meet industry standards and site licence conditions
• Drive continuous improvement and innovation across EC&I systems and processes

This is a full‑time role, working 37 hours per week. Hybrid working patterns are available, with an expectation of three days on site. The role is based at one of our key locations – Moor Row (Cumbria), Warrington (Cheshire), Leicester (Leicestershire) or Bristol. Travel to customer sites may be required depending on project needs.

• Design and deliver EC&I systems in regulated environments
• Apply nuclear safety standards such as IEC 61508 and BS EN 61511
• Work within cross‑functional teams on complex engineering projects
• Engage with regulators, clients and suppliers to resolve technical challenges
• Produce and review technical documentation including specifications and safety case contributions

• Degree in Electrical Engineering, Control Engineering, Instrumentation or a related discipline
• Chartered Engineer status or working towards it (preferred)

The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)

• 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.

As a leader within the UK nuclear industry, Cavendish Nuclear, part of Babcock International Group, provides a comprehensive range of critical nuclear solutions in clean energy, defence and civil new build and decommissioning projects. Together, we’re innovating to make nuclear safer, faster and cost-effective across the nuclear energy life cycle. Your career with us could take you anywhere within Babcock International Group – from Canada, the USA to Japan. Work with us to create a safe and secure world, together.

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.

30/12/2025