Job Description

Job Title: Mechanical Designer
Location: Warrington, Cheshire + Hybrid Working Arrangements
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF70336
Shape the future of clean energy and nuclear engineering
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 Designer at Warrington or Preston, near Cheshire / Lancashire.
The role
As a Mechanical Designer, you'll help deliver innovative engineering solutions that support the UK's clean energy ambitions, national security, and major nuclear programmes. You'll contribute to complex, high-impact design projects throughout the full design lifecycle - from concept development to final in-service support. It's a role where your technical expertise, creativity and problem-solving will directly influence project success, while supporting your professional growth in one of the most advanced engineering environments in the UK.
Day-to-day, you'll have the following responsibilities:

• Produce high-quality engineering drawings throughout the design lifecycle in line with ISO standards.
• Work collaboratively with engineering, production and project teams to ensure alignment and design integrity.
• Maintain design and project documentation, including updates to "as-built" and datum packs.
• Support design reviews, resolve technical queries, and contribute to innovative engineering solutions.
• Assist senior designers with estimates, continuous improvement initiatives and project support tasks.

This is a full-time role working 37 hours per week, Monday to Friday, based at Warrington or Preston, with flexible working arrangements available.
Essential experience of the Mechanical Designer:

• Understanding of general engineering drawing practice.
• Experience working within a multidisciplinary engineering environment.
• Ability to collaborate effectively with cross-functional teams.
• Strong communication skills with a focus on accuracy and detail.

Qualifications for the Mechanical Designer:

• ONC / HNC / HND or BTEC National Certificate / Diploma (or equivalent), or
• A relevant engineering apprenticeship in mechanical or design disciplines.

Security Clearance
The successful candidate must be able to achieve and maintain Standard (BPSS) security clearance for this role. Further details are available at
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 Nuclear
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.
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 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: 03/03/2026
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Skills Required