Senior Process Engineer

Assystem, Switch On; Bristol; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A leading engineering firm in Bristol is seeking a Senior Process Engineer to support the design and integration of effluent treatment systems. This hybrid role requires a strong background in process engineering and the ability to coordinate across multiple disciplines. Ideal candidates will possess a degree in Process or Mechanical Engineering and have excellent communication skills. Benefits include flexible working hours, pension contributions, and employee support programs.

Benefits

Hybrid Working Opportunity

Flexible working hours

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

25 days’ paid annual leave + bank holidays

Professional fees reimbursed

Competitive Sick Pay

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

Free Digital Gym Access

24/7 Employee Support Line

Qualifications

• Background in nuclear, heavy industrial processes, water treatment, chemical or energy sectors.
• Confident working with remote engineering groups.
• Excellent interpersonal skills across teams.

Responsibilities

• Support the design and integration of effluent treatment systems.
• Guide system engineers and support design decision making.
• Coordinate with multiple engineering disciplines.

Skills

Process engineering decision making

Communication skills

System coordination

Building relationships

Education

Degree in Process or Mechanical Engineering or equivalent

Job description

Company Description

⚡️💡 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.

Job Description

The Job Mission :

This hybrid Senior Process Engineer role is based in Bristol, with three days in the office and two from home. You will support the design and integration of effluent treatment systems, acting as a technical coordinator across multiple engineering disciplines. You will guide system engineers, support design decision making and ensure consistent integration of process, mechanical, civil, electrical, I&C and safety inputs.

Responsibilities :

• 🧭 Defining and cascading process engineering priorities aligned with key project milestones
• 🤝 Providing process engineering guidance to system engineers and resolving multi discipline issues
• 🔗 Coordinating closely with layout, civil, nuclear safety, electrical, I&C and commissioning teams
• 📈 Tracking technical progress and escalating blockers to project and Responsible Designer teams
• 📋 Leading and supporting team participation in technical committees and coordination forums
• 🛡 Promoting process design stability and challenging modifications before change initiation
• 📚 Ensuring consistent integration of process impacts and updating system configuration data

Qualifications

Skills Required :

• 🎓 Degree in Process or Mechanical Engineering, or equivalent
• 🏭 Background in nuclear, heavy industrial process, water treatment, chemical or energy sectors
• 📊 Strong capability in process engineering decision making and system coordination
• 🗣 Excellent communication and interpersonal skills across UK and EU based teams
• 🌍 Confident working with remote and multi discipline engineering groups
• 🤝 Able to build constructive relationships across complex project structures

Why Apply?

This is your chance to work on a project that defines the future of clean energy in the UK. You’ll join a forward‑thinking organisation where your contribution directly supports a safer, more sustainable world. If you’re ready to take on the challenge and grow with your future team, apply today.

Benefits include :

• 🏡 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

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.