Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)
Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)

Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)

Temporary 60000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead I&C commissioning for major nuclear projects and ensure safety compliance.
  • Company: Join Assystem, a top global nuclear engineering company driving energy transition.
  • Benefits: Competitive salary, professional development, and a collaborative work environment.
  • Why this job: Be part of groundbreaking projects like Hinkley Point C and shape the future of energy.
  • Qualifications: Degree in relevant engineering field and 10+ years in I&C engineering.
  • Other info: Flexible working conditions with opportunities for career growth.

The predicted salary is between 60000 - 84000 £ per year.

Company Description

About Assystem

At Assystem, our mission is to accelerate the energy transition worldwide. With over 55 years of expertise in highly regulated sectors, our 8,000 Switchers globally deliver cutting-edge engineering and project management solutions. Join us and be part of one of the top three nuclear engineering companies in the world!

Why Join the Community of Switchers?

As a member of Assystem, you'll be part of a team driving the low-carbon energy future. We’re ranked second globally in nuclear engineering, offering you the chance to work on world-class projects like Hinkley Point C. Together, we’ll innovate and shape tomorrow’s energy solutions.

Job Summary

The Senior Commissioning Dedicated Instrumentation & Controls (I&C) Lead is responsible for leading and coordinating defined I&C commissioning scopes at the client's project, ensuring systems are commissioned safely, compliantly, and in line with nuclear quality, safety, and regulatory requirements. This is a temporary cover role for approximately 6.5 months, providing leadership continuity during a critical phase of commissioning and start-up. The role acts as the focal point for I&C commissioning across multiple workstreams, ensuring alignment with the project's commissioning strategy, nuclear safety culture, and UK regulatory expectations.

Scope of Work

  • Main Scope (Direct Leadership)

DMIC I&C Commissioning – overall I&C commissioning lead for the DMIC scope I&C support for Cranes Commissioning – support for commissioning coordination, testing, and handover of crane systems focusing on I&C scope

  • Mainstreams (Oversight & Integration)

The role provides leadership oversight and integration for the following three I&C mainstreams, each managed by a dedicated scope manager:

  • I&C representative for Milestone journey to Demin water Plant (covering DMIC scope of Demin Water Plant)
  • I&C representative for Milestone journey to CETP (coordinating I&C activities)
  • Lead preparation and commissioning for Hydrogen Detection System
  • Lead preparation and commissioning for Fire Detection System
  • Supporting delivery of TAE milestone (temporary I&C systems delivery)

Managing three direct reports:

  • Commissioning engineer for HVAC I&C scope
  • Commissioning engineer for Turbine I&C scope
  • Commissioning engineer for Fire detection and Hydrogen detection scopes

Responsibilities include:

  • Ensuring interface alignment between all I&C scopes and the wider HPC commissioning programme
  • Maintaining consistent commissioning methodologies, documentation, and safety standards
  • Chairing one weekly coordination meeting with each of the three mainstream scope senior commissioning engineers to review progress, risks, interfaces, and readiness

Key Responsibilities

  • Commissioning Leadership

Lead I&C commissioning activities for DMIC contracts (various cranes, Demin water plant, fire detection, hydrogen detection) in accordance with the project commissioning processes. Plan and sequence commissioning activities to support system handover, energisation, and start-up milestones. Ensure readiness for loop checks, functional testing, cause & effect testing, and integrated system testing. Interface closely with construction, electrical, mechanical, and operations teams.

  • Technical Oversight

Review I&C commissioning procedures, test packs, and vendor documentation for nuclear compliance. Provide technical leadership during I&C testing, fault finding, and issue resolution. Review of commissioning results following site acceptance test activities for Cranes, hydrogen detection system, etc. Ensure effective interface management between systems. Support DCS, PLC, SIS, and field instrumentation commissioning activities.

  • Nuclear Safety & Regulatory Compliance

Ensure all commissioning activities are executed in line with nuclear safety culture, project quality arrangements, and site procedures. Comply with UK regulatory requirements, including ONR expectations and client governance. Ensure strict adherence to permit-to-work, LOTO, configuration control, and change management processes. Participate in safety reviews, readiness reviews, and regulatory inspections as required.

  • Coordination & Communication

Act as the primary I&C commissioning interface for the assigned scopes. Lead weekly/bi-weekly coordination meetings with for Demin water plant (I&C scope), CETP (I&C scope) HVAC, hydrogen fire detection, and turbine scope managers. Provide clear reporting on progress, risks, constraints, and commissioning readiness. Support operator familiarisation and handover activities.

  • Documentation & Handover

Ensure completeness and quality of commissioning records, test evidence, and as-built documentation. Manage I&C punch lists through closure in accordance with HPC requirements. Support final system acceptance and turnover to Operations and Maintenance.

Qualifications

Degree in Instrumentation, Electrical, Control Systems Engineering, or a related discipline. 10+ years’ experience in I&C engineering and commissioning, preferably on large, complex or regulated projects. Previous experience in high-hazard regulated environments strongly preferred. Proven experience leading multi-scope I&C commissioning teams. Strong knowledge of DCS, PLC, SIS, and field instrumentation systems.

Skills & Competencies

Strong leadership and coordination across multiple commissioning workstreams. Deep understanding of nuclear safety culture and quality expectations. Excellent interface management and communication skills. High attention to detail and strong documentation discipline. Ability to integrate rapidly into an established HPC project team within a fixed-term assignment.

Working Conditions

This is a full-time position based at client premises, involving a combination of site-based activities and office work in locations including Bridgwater and Bristol. Temporary assignment of approximately 6.5 months.

Additional Information

As this is a front-line site delivery role, there is a necessity to work flexibility working under the time pressure of the schedule in order to unblock technical issues to allow continuity of work by the installation teams.

What We Offer

Competitive salary and benefits package. Opportunity to work on one of Europe’s largest nuclear construction projects. Professional development and training opportunities. Collaborative and inclusive work environment. Join Assystem and contribute to delivering sustainable and innovative engineering solutions for the Hinkley Point C project. 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.

Senior EC&I Commissioning Engineer (Temporary – 6.5 Months) employer: Assystem, Switch On

Assystem is an exceptional employer, offering a dynamic and inclusive work culture that prioritises collaboration and innovation in the energy sector. With competitive salaries, professional development opportunities, and the chance to work on prestigious projects like Hinkley Point C, employees are empowered to grow their careers while contributing to a sustainable future. Join us in a supportive environment where diverse perspectives are valued, and your expertise can make a real impact.
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Contact Detail:

Assystem, Switch On Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)

Tip Number 1

Network like a pro! Reach out to current or former employees at Assystem on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.

Tip Number 2

Prepare for the interview by brushing up on your I&C knowledge and nuclear safety culture. We want to see that you’re not just a fit on paper but also passionate about the role and the energy transition!

Tip Number 3

Showcase your leadership skills during interviews. Talk about how you've successfully led teams in high-pressure environments before. Assystem values strong leaders who can coordinate multiple workstreams effectively.

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining the Assystem community.

We think you need these skills to ace Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)

Instrumentation Engineering
Control Systems Engineering
I&C Commissioning
Nuclear Safety Compliance
Project Coordination
Technical Leadership
DCS Systems Knowledge
PLC Systems Knowledge
SIS Systems Knowledge
Field Instrumentation Systems Knowledge
Documentation Management
Interface Management
Risk Management
Communication Skills
Attention to Detail

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior EC&I Commissioning Engineer role. Highlight your relevant experience in I&C engineering and commissioning, especially in regulated environments. We want to see how your skills align with our mission at Assystem!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about the energy transition and how your background makes you a perfect fit for our team. Don’t forget to mention specific projects or experiences that relate to the role.

Showcase Your Leadership Skills: Since this role involves leading multiple workstreams, make sure to highlight your leadership experience. Share examples of how you've successfully managed teams and coordinated complex projects in the past. We love seeing strong leaders in action!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, you’ll find all the details you need about the role and our company culture there!

How to prepare for a job interview at Assystem, Switch On

Know Your I&C Inside Out

Make sure you brush up on your knowledge of Instrumentation and Controls systems. Be ready to discuss specific projects you've worked on, especially in high-hazard environments. This will show that you understand the complexities involved and can lead commissioning activities effectively.

Demonstrate Leadership Skills

Prepare examples of how you've successfully led teams in previous roles. Highlight your experience in coordinating multiple workstreams and managing direct reports. This is crucial for the Senior Commissioning Engineer role, so be ready to showcase your leadership style and how it aligns with nuclear safety culture.

Familiarise Yourself with Regulatory Standards

Understand the UK regulatory requirements and ONR expectations relevant to the role. Be prepared to discuss how you've ensured compliance in past projects. This will demonstrate your commitment to safety and quality, which is vital in the nuclear sector.

Prepare for Technical Questions

Expect technical questions related to DCS, PLC, SIS, and field instrumentation systems. Brush up on your problem-solving skills and be ready to discuss how you've tackled challenges during commissioning processes. This will help you stand out as a knowledgeable candidate.

Senior EC&I Commissioning Engineer (Temporary – 6.5 Months)
Assystem, Switch On

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