Commissioning Engineer

Blueprint Recruitment Solutions Ltd; Welwyn; On-site; GBP 92,000 - 111,000; Full time

Job summary

Blueprint Recruitment Solutions Ltd is seeking an experienced Commissioning Engineer to support major water and wastewater process projects across the full commissioning lifecycle. Two positions exist in Hertfordshire and Surrey, with options Inside or Outside IR35.

You will oversee installation, testing, systems integration and handover, working closely with design teams, suppliers and client teams. The role requires hands-on commissioning, FAT/SAT and site leadership, typically 40–45 hours per

Qualifications

• 5+ years' experience in water/wastewater commissioning
• Experience with main contractor projects in water and wastewater
• Strong understanding of electrical and mechanical installation and commissioning
• Ability to interpret schematics, FDS and P&IDs
• Knowledge of safety rules and statutory legislation
• Proactive problem-solving and site leadership abilities
• Confident client-facing communication skills
• Self-management and strong organisational skills
• Holds ECS (CSCS) card and Water Hygiene/Safety qualifications would be advantageous

Responsibilities

• Deliver commissioning across water and wastewater projects from design through handover
• Lead installation, testing and FAT/SAT coordination
• Develop commissioning plans and documentation
• Coordinate electrical and mechanical installation activities
• Witness and inspect commissioning work and subcontractor activities
• Review RAMS and monitor supply-chain performance
• Provide progress reports to project management
• Train client operations and maintenance teams
• Act as front-line supervisor during installation and commissioning phases

Skills

Commissioning experience

Electrical installation

Mechanical installation

Schematic interpretation

Project leadership

Client-facing communication

Safety standards knowledge

FAT/SAT experience

Troubleshooting

Education

HNC / Degree in Engineering

Engineering apprenticeship + NVQ

Job description

This is an excellent opportunity for an experienced Commissioning Engineer to support the delivery of major water and wastewater process engineering projects across the full commissioning lifecycle.

There are two positions available - one in Hertfordshire and one in Surrey. The roles can be engaged Inside or Outside IR35 and will suit engineers with strong hands‑on commissioning experience who are comfortable overseeing installation, testing, systems integration and final handover.

You'll work closely with design teams, suppliers, subcontractors and client teams, combining technical commissioning responsibilities with site supervision, programme coordination and quality assurance.

The Role

You'll be involved in:

• Delivering commissioning across water and wastewater process projects
• Providing commissioning input from design through to final handover
• Developing commissioning plans, procedures and associated documentation
• Undertaking hands‑on commissioning activities
• Leading Factory and Site Acceptance Testing (FAT/SAT)
• Witnessing and inspecting installation, testing and subcontractor commissioning activities
• Coordinating electrical and mechanical installation and commissioning
• Reviewing electrical and mechanical schematics, FDS and P&IDs
• Configuring and calibrating analytical equipment and integrating monitoring systems
• Managing defects, snagging and technical close‑out
• Reviewing and approving RAMS for commissioning activities
• Monitoring supply‑chain performance and driving improvements
• Coordinating third‑party engineers and specialist subcontractors
• Supporting Early Contractor Involvement through site surveys and system reviews
• Managing process and M&E scope, programme and design changes
• Troubleshooting technical issues and implementing practical solutions
• Capturing installation, testing and commissioning records
• Providing progress reports and updates to project management teams
• Delivering training to client operations and maintenance teams
• Acting as a front‑line supervisor during installation and commissioning phases

What They're Looking For

• 5+ years' experience, preferably within a water‑sector commissioning role
• Previous experience working for a main contractor on water and wastewater process engineering projects
• HNC / Degree in a relevant Engineering discipline, or an engineering apprenticeship and NVQ with suitable experience
• Strong understanding of electrical and mechanical installation and commissioning
• Proven experience taking projects through installation, commissioning and handover
• Ability to interpret electrical/mechanical schematics, FDS and P&IDs
• Knowledge of relevant standards, safety rules and statutory legislation
• Strong troubleshooting and analytical problem‑solving capabilities
• Ability to lead site teams where required
• Confident client‑facing communication skills
• Strong organisational skills with the ability to self‑manage
• ECS (CSCS) card
• Water Hygiene card
• SSSTS or SMSTS
• BS #removed#th Edition
• First Aid at WorkCompEx qualifications and professional registration/membership would be advantageous.

Why Apply?

• £500-£600 per day
• Inside or Outside IR35 options
• Initial 6‑month contract
• Two positions available - Hertfordshire and Surrey
• 40-45 hours per week
• Full lifecycle commissioning responsibility
• Hands‑on technical and site leadership role
• Major water and wastewater process engineering projects
• Strong exposure to mechanical, electrical and process systems
• FAT/SAT, installation, commissioning and handover responsibility