Principal Process Engineer

Nuclearinst; Leicester; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Generous holiday allowance

Matched pension contributions

Digital GP and health services

Employee share scheme

Flexible working options

Be Kind Day volunteering leave

Job summary

Cavendish Nuclear is seeking a Principal Process Engineer to lead process engineering across complex bids within the Business Winning team. The role is full-time with hybrid working from UK sites and travel to customer locations as required.

You will oversee multidisciplinary inputs, ensure technical integrity, and mentor others while contributing to national security programmes in clean energy, defence and decommissioning.

Qualifications

• Engineering degree (or equivalent) with significant experience.

Responsibilities

• Lead the process engineering elements of bids.
• Develop and deliver engineering scope, schedules and resource plans.
• Ensure technical integrity, compliance, and quality.
• Produce and review technical reports and verification plans.
• Promote engineering best practice and mentor others.

Skills

Lead bids

Chartered Engineer

Team management

Stakeholder interfacing

Communication skills

Process engineering

Education

Engineering degree

Job description

Job Title: Principal Process Engineer

Location: Flexible, UK + Hybrid Working Arrangements

Compensation: Attractive Salary + Benefits

Role Type: Full time / Permanent

Role ID: SF71440

Lead the Breakthrough Engineering That Wins the Future

About Us

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 Principal Process Engineer within our Business Winning team at one of our main sites: Warrington (Cheshire), Preston (Lancashire), Leicester (Leicestershire), Newbury (Berkshire), or Bristol.

As a Principal Process Engineer within our Business Winning, you’ll play a central role in shaping the technical solutions and engineering excellence that help us secure the projects powering the UK’s clean‑energy, defence and decommissioning future. You’ll lead multidisciplinary engineering inputs that strengthen our bids, influence high‑value programmes, and contribute directly to work that protects national capability.

The Role

As a Principal Process Engineer, you will provide process engineering leadership across complex bids and early‑stage project definition within our Business Winning team

This is a full‑time role based at one of our main sites: Warrington (Cheshire), Preston (Lancashire), Leicester (Leicestershire), Newbury (Berkshire), or Bristol with travel to other Cavendish Nuclear and customer locations as required. Hybrid working arrangements are available.

Day‑to‑day you’ll be required to:

• Lead the process engineering elements of bids.
• Develop and deliver engineering scope, schedules and resource plans.
• Ensure technical integrity, compliance, and quality.
• Produce and review technical reports and verification plans.
• Promote engineering best practice and mentor others.

Essential experience of thePrincipal Process Engineer:

• Significant demonstrable experience in a relevant engineering discipline.
• Chartered Engineer status or working towards it.
• Experience managing teams delivering technical activities.
• Ability to interface with multiple disciplines and stakeholders.
• Strong communication and influencing skills.

Qualifications for thePrincipal Process Engineer:

Essential:

• Engineering degree (or equivalent) with significant experience.

Security Clearance

The successful candidate must be a sole UK national who is able to achieve and maintain Security Check (SC) security clearance for this role.

Many of the positions within our company are subject to national security clearance and Trade Control restrictions. 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 receive 10‑days special paid leave
• Holiday Trading scheme
• ‘Be Kind Day’ volunteering leave
• Flexible working options
• A dynamic working environment

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 [e-mail] 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: 07/10/2026