Assystem
Senior EC&I Designer

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Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.
Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.
Job Description
Senior EC&I Designer - Warrington
Permanent / Contractor
Join Our Team at Assystem!
π Your Future Team:
Assystem is a well-established leader in the nuclear decommissioning sector. Partner of the Design Services Alliance. Expertise in waste management services for strategic nuclear clients in the UK. Offering life extension and feasibility assessment services.
π Your Missions:
- π οΈ Interface with Integrated Design, facility, and project teams.
- π€ Collaborate through all project phases.
- π Work effectively in a team environment.
Why Join the Community of Switchers?
- π Over 55 years in nuclear engineering.
- π Ranked among the top 3 largest nuclear engineering companies.
- πΌ Attractive social benefits, including an engaging Employee Committee and holiday bonuses.
- π Ongoing training with numerous career opportunities.
- π 70% of our managers are promoted internally!
- π Hybrid work: 1-2 days remote per week.
Reasons to use Rodeo
Iβm in my final year doing Economics and I donβt know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer β it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) donβt need a masters. Letβs look at the ones youβd be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet β that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant β 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
Youβve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon β deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme β client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right β and where to focus when applying.
Qualifications
π Essential Experience:
- π₯οΈ Proficient in AutoCAD
- π Experience in CE&I Project Delivery
- π‘ Skilled in building electrical services design (lighting, small power)
- π Expertise in CE&I Instrumentation and Security Systems design
- π Knowledgeable in CDM and IET wiring regulations
- π Space management and cable routing expertise
- π₯ Strong communication skills, team player
- π Minimum ONC in a relevant discipline
π§ Desirable Experience:
- βοΈ Radiometric Systems
- β BS 61508 compliance
- ποΈ Autodesk Revit, AVIVA, CIMAGE/DM Desktop
Additional Information
- π₯ Over 55 years of nuclear/Defence engineering expertise.
- π₯ Fantastic employee assistance programme, health and wellbeing resources, social benefits.
- π₯ Opportunities for career advancement with a focus on internal promotions.
- π₯ Hybrid working/dynamic projects.


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Due to the nature of the work, applicants must meet UK security clearance criteria.
We are committed to equal treatment of candidates and fostering diversity. Skills, talent, and innovation are what matter most. Bring your unique contributions and help us shape the future!
Ready to make a difference in the nuclear engineering world? Join Assystem today! π
NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.
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 peopleβs ability to dare are the only things that matter! Bring your unique contributions and help us shape the future.
βIt took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what Iβve been looking for.β
Jessica, London
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