Pre-Commissioning Engineer

Celnor Group; Bristol; On-site; GBP 30,000 - 40,000; Full time

Job summary

A water hygiene specialist is seeking a Pre-Commissioning Engineer to support projects across Bristol and the M4 corridor. This role involves delivering high-quality pre-commissioning works on water systems, ensuring compliance and safety. Ideal candidates will have proven experience in water hygiene, strong knowledge of relevant standards, and a commitment to quality workmanship. Benefits include paid overtime, a company van, annual leave that increases with service, and a comprehensive health plan.

Benefits

20 days annual leave + bank holidays, increasing to 25 days

Paid overtime opportunities

Company work van

Company mobile phone

NHS ‘Top-Up’ Health Plan

Employee Assistance Programme

Qualifications

• Proven experience in pre-commissioning / water hygiene.
• Strong knowledge of HSG 274 & HTM 04-01.
• CSCS card preferred, Confined Spaces & First Aid desirable.

Responsibilities

• Deliver high-quality pre-commissioning works on water systems.
• Flushing and chlorination of domestic water systems.
• Pre-commission cleaning of pipework and closed systems.
• System disinfection and validation.
• Ensure compliance with health and safety standards.

Skills

Pre-commissioning / water hygiene

Knowledge of HSG 274 & HTM 04-01

CSCS card

Confined Spaces & First Aid

Full UK driving licence

Reliability and professionalism

Job description

Pre-Commissioning Engineer

Department: Field Team

Employment Type: Full Time

Location: Bristol

Reporting To: Andrew Bourne

Compensation: £30,000 - £40,000 / year

Description

Pre-Commissioning Engineer

Bristol | M4 Corridor | Regional Projects

Join a growing water hygiene specialist and be part of something built right—from day one.

Concept Environmental is expanding, and we’re looking for an experienced Pre-Commissioning Engineer to support projects across Bristol and the M4 corridor. If you take pride in quality workmanship, enjoy site-based project work, and want long-term progression, not just a job—this could be the role for you!

Key Responsibilities

You’ll be responsible for delivering high-quality pre-commissioning works on new and refurbished water systems, ensuring compliance, safety, and best practice throughout.

Key duties include:

• Flushing and chlorination of domestic water systems
• Pre-commission cleaning of pipework and closed systems
• System disinfection and validation
• Accurate reporting and documentation
• Working closely with site teams, project managers, and clients
• Ensuring all works meet HSG 274, HTM 04-01, and industry standards

Skills, Knowledge & Expertise

• Proven experience in pre-commissioning / water hygiene
• Strong knowledge of HSG 274 & HTM 04-01
• CSCS card (preferred)
• Confined Spaces & First Aid (desirable)
• Full UK driving licence
• Reliable, professional, and safety-focused approach

Job Benefits

• 20 days annual leave + bank holidays, increasing yearly up to 25 days with long service
• Paid overtime opportunities to boost your earnings
• Company work van fully equipped for the role
• Company mobile phone provided
• NHS ‘Top-Up’ Health Plan for added peace of mind
• Employee Assistance Programme (EAP) for mental, physical, and financial wellbeing
• Job security within a growing business
• Supportive management and real career progression