EC&I Commissioning Engineer

Scantec Personnel Limited; Reading; On-site; GBP 45,000 - 65,000; Full time

Job summary

A leading firm in the nuclear and defense sectors is seeking a Commissioning Engineer with expertise in Electrical, Control, and Instrumentation (EC&I). This long-term contract in Reading offers hands-on involvement in critical infrastructure commissioning. Successful candidates will have necessary qualifications, including City & Guilds certifications, and must meet strict security clearance requirements to thrive in this regulated environment.

Qualifications

• Significant experience in EC&I commissioning for nuclear/defense projects.
• Eligible for UK Security Clearance.
• Strong understanding of UK regulations and standards.

Responsibilities

• Provide hands-on support during electrical installations.
• Lead commissioning activities and develop project documentation.
• Supervise EC&I works and report to the Commissioning Manager.

Skills

Electrical Control

Instrumentation

PLC/SCADA

Fault-finding

Technical Troubleshooting

Education

Engineering Apprenticeship

City & Guilds 2391-52

City & Guilds 2382-22

Job description

Salary: Competitive rate (Outside of IR35)

Job Reference: JOB-89912

Published: 26-06-2025

Duration: Long Term Contract

Expiry Date: 24-07-2025

Country: United Kingdom

Position Title: Commissioning Engineer – Electrical, Control & Instrumentation (EC&I) – Nuclear and Defence
Location: Reading, Berkshire
Engagement Type: Long-Term Contract (Outside of scope of IR35 - Pending determination)

Position Summary:
We are seeking a highly competent Commissioning Engineer with a strong bias towards Electrical, Control, and Instrumentation (EC&I) disciplines to support critical infrastructure within the nuclear and defence sectors. This role requires hands-on involvement, technical precision, and a proactive approach to site-based commissioning activities.

Key Duties and Responsibilities:

Provide hands-on support to the Construction Manager during electrical installations

Supervise site-based EC&I works and report directly to the Commissioning Manager

Lead commissioning activities and system validations in accordance with project requirements

Develop and execute commissioning documentation including ITPs and as-built records

Sign off completed systems in line with regulatory and client standards

Perform system testing, fault-finding, and technical troubleshooting

Collaborate with engineering, construction, and QA/QC teams to ensure seamless project integration

PLC/SCADA (Siemens S7 – TIA Portal) configuration and diagnostics

Electrical fault-finding and troubleshooting in control panels

Instrument calibration and setup (pressure, flow, vacuum, pneumatics)

Load testing and functional performance validation

Qualifications and Certifications:

Time-served Engineering Apprenticeship

City & Guilds 2391-52 – Inspection and Testing

City & Guilds 2382-22 – 18th Edition Wiring Regulations

Demonstrable experience delivering EC&I commissioning on nuclear and/or defence projects

Strong understanding of applicable UK regulations, standards, and site protocols

Eligible to obtain UK Security Clearance

Additional Information:
This is a long-term contract opportunity within one of the UK’s most high-profile and regulated engineering environments. Due to the nature of the project, candidates must hold current Developed Vetting (DV) clearance and also be eligible to obtain or renew DV clearance. Candidates must also have the right to work in the UK.