Overview
Job Title: Senior Mechanical Designer
Location: Warrington, Cheshire or Preston, Lancashire + Hybrid Working Arrangements
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF71545
Shape the future of nuclear engineering with innovative, industry‑leading design. 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 Designer at our Warrington or Preston sites.
The role
As a Senior Mechanical Designer, you’ll take on a role that’s truly out of the ordinary. You’ll be a key point of contact for engineering colleagues and stakeholders throughout the design lifecycle, contributing to reviews, resolving technical challenges and helping ensure robust, compliant design outcomes.
Responsibilities
* Allocating design tasks, supporting and guiding a team of Designers, and ensuring high‑quality discipline outputs.
* Leading inter‑disciplinary coordination to meet regulatory and company standards.
* Preparing and checking design drawings, ensuring compliance with ISO standards and project requirements.
* Advising on the best methods, tools and techniques for design tasks and providing technical support to the design team.
* Liaising with customers to support relationship development, resolve technical issues and ensure progress transparency.
This role is full‑time, 37 hours per week and is based at either our Warrington, Cheshire site or Preston, Lancashire site with hybrid working arrangements.
Essential experience
* Experience working in a detailed design environment.
* Strong knowledge of CAD tools and engineering drawing practices.
* Demonstrable experience providing technical leadership within a multi‑discipline design environment.
* Incorporated Engineer status (desirable).
Qualifications
HNC/HND (minimum) in a relevant discipline or equivalent qualification.
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 (www.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 to buy additional leave or sell up to one week of annual leave (window opens Feb–Mar annually)
* “Be Kind Day” paid leave for volunteering
* Excellent development opportunities and benefits package including an employee assistance programme
Cavendish Nuclear
As a leader within the UK nuclear industry, Cavendish Nuclear, part of Babcock International Group, provides a comprehensive range of critical nuclear solutions across clean energy, defence and civil projects. We’re committed to building an inclusive culture and flexible working where possible. If you have a disability or need reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject header “Reasonable adjustments requirement”.
Closing date: 18/03/2026
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