COMAH sites, regulated under the Control of Major Accident Hazards, offer some of the most secure and rewarding environments for mechanical and multi-skilled engineers across the UK. Whether you’ve worked on high-risk sites before or are considering a move into this space, here’s what you need to know about the COMAH engineering jobs available, and what it takes to succeed.

What is a COMAH site?

COMAH regulations apply to facilities that store or process hazardous substances, such as chemical plants, refineries, bulk storage terminals, pharmaceuticals, and energy-from-waste sites.

Engineers working on COMAH sites must operate with a high level of safety awareness, compliance, and technical capability, making it a strong fit for those looking to challenge themselves and grow their skills.

Why are COMAH roles in demand?

Many COMAH sites run 24/7 operations where uptime, maintenance, and safety are critical. Employers are actively looking for engineers with experience in:

• Mechanical fitting and shutdown work
• Pressure systems and rotating equipment
• Pipework and fabrication
• Working with permit-to-work and control of work systems

We’re seeing consistent demand for both contract and permanent hires, especially for engineers with experience on regulated or high-risk sites.

What’s the appeal for mechanical engineers?

Working on a COMAH site isn’t just another job, it’s a chance to take on technically complex, safety-critical work that makes a real impact.

Benefits include:

• Structured environments where safety and process are taken seriously
• Opportunities to work on major outages and shutdowns
• Access to ongoing training and site-specific qualifications (e.g. CompEx, CCNSG, confined space)
• A clear pathway to progression into lead or supervisory roles

If you’re used to working in heavy industry, utilities, or similar environments, COMAH could be your next step up.

What to consider before applying

COMAH work isn’t for everyone. The procedures are tighter, documentation is heavier, and expectations around safety and conduct are high. You’ll also need to be comfortable with:

• Pre-site inductions and health checks
• Strict permit systems and toolbox talks
• Callout or shift work depending on the site

That said, many of the engineers we place in COMAH industries say the structure, professionalism, and technical challenge make it well worth it.

Final thoughts

COMAH engineering jobs offer mechanical and multi-skilled engineers a stable, rewarding career path, especially for those with a proactive approach to safety and a solid trade background.

At Technical Partners, we work with some of the UK’s top COMAH-regulated employers, helping experienced engineers find roles that suit their skill sets, goals, and site preferences.

Interested in COMAH work?