Process Engineer

Assystem UK Ltd; Bristol; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading engineering company in Bristol seeks a Process Engineer to support fluid system design replication for nuclear projects. You will work collaboratively with various teams, maintain system stability through analysis, and ensure quality standards. Candidates should have a degree in Mechanical or Chemical Engineering and experience in regulated environments. This hybrid role offers competitive benefits, including flexible working and a comprehensive pension scheme.

Benefits

Flexible working hours

Pension scheme (8% company contribution / 4% personal contribution)

25 days' paid annual leave + bank holidays

Professional fees reimbursed

Employee referral scheme

Competitive Sick Pay

Income Protection & 3x Salary Death-in-Service Cover

Free Digital Gym Access

24/7 Employee Support Line

Qualifications

• Must have a Mechanical or Chemical Engineering degree.
• Experience in highly regulated industries or heavy industrial projects required.
• Strong workload management and documentation skills essential.

Responsibilities

• Support fluid system design replication across nuclear projects.
• Maintain system design stability through analysis and modelling.
• Collaborate closely with design, procurement, and commissioning teams.

Skills

Mechanical or Chemical Engineering degree

Experience in regulated industries

Process, hydraulic, mechanical sizing

Clear communication with remote teams

Ability to manage workload

Education

Degree in Mechanical or Chemical Engineering

Job description

This hybrid Process Engineer role is based in Bristol, with three days in the office and two days from home. You will support the replication of fluid system designs across two major nuclear projects. You will help maintain system design stability through analysis, modelling and configuration updates. You will work closely with design, procurement and commissioning teams throughout the project lifecycle.

Issuance of replication analysis for fluid system design

• Verification of input data, requirements and lessons learned
• Development of processes for system design document replication
• Component sizing and thermal hydraulic modelling when adaptations are needed
• Technical support to procurement teams and suppliers
• Updating configuration data and system documentation to reflect changes
• Developing technical solutions that support design stability

Qualifications

• Mechanical or Chemical Engineering degree or equivalent
• Experience within highly regulated industries or heavy industrial projects
• Experience in process, hydraulic, mechanical sizing or I&C
• Strong ability to manage workload and produce quality documentation
• Clear written and verbal communication with UK and EU teams
• Confident working with remote and international engineering stakeholders

About Assystem

At Assystem, our mission is to accelerate the global energy transition. With over 7,500 Switchers worldwide, we combine engineering expertise, project management, and digital innovation to deliver major infrastructure programmes. In the UK, we're at the forefront of landmark projects including Hinkley Point C, Sizewell C, and future Small Modular Reactors (SMRs). By joining us, you'll be contributing to some of the most exciting and important engineering challenges of our time.

Why Join the Community of Switchers?

At Assystem, you'll be part of one of the top three largest nuclear engineering companies in the world. Joining us means working in a collaborative and supportive environment where innovation thrives. You'll be empowered to grow your skills while contributing to cutting‑edge projects that have a lasting global impact.

Please note: Due to project security requirements, unfortunately, visa sponsorship is not available for this position.

Hybrid Working Opportunity

• Flexible working hours
• Pension scheme (8% company contribution / 4% personal contribution)
• 25 days' paid annual leave + bank holidays + option to buy or sell days
• Professional fees reimbursed
• Employee referral scheme
• Competitive Sick Pay - Support when you need it
• Income Protection & 3x Salary Death-in-Service Cover
• Free Digital Gym Access - Expert-led fitness classes
• 24/7 Employee Support Line - Mental health, financial & legal help

Equal Opportunity Statement

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter! Bring your unique contributions and help us shape the future.