Full-Time

Lead EC&I Engineer

ASSYSTEM

ASSYSTEM

5,001-10,000 employees

Engineering services for design, construction, commissioning

No salary listed

Warrington, UK

Hybrid

Residency/eligibility criteria apply for UK SC clearance; candidates must meet security clearance requirements.

Bachelor's

Category
Electrical Engineering

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Requirements
  • Background in engineering, demonstrating a record of successful delivery including recent leadership roles guiding technical personnel
  • Significant experience in an engineering design environment with strong technical knowledge
  • Recent experience working within a regulated and quality-assured system (preferably nuclear), where professional engineering judgment is key
  • Knowledge and understanding of governing laws, regulations, and standards for the nuclear industry (equivalent experience in other industries will be considered): Health & Safety at Work Act, The Construction (Design and Management) Regulations 2015, Safety of Machinery, CDM, LOLER, Pressure Systems, DSEAR, Ionising Radiation
  • Identification of Technological Readiness Levels and development of technology development plans
  • Higher Education Qualification in Engineering (or Equivalent) subject
  • Appropriate (Engineering or Scientific) Institution Membership
  • Ability to obtain SC Clearance
  • Residency criteria for minimum UK security clearance if not already security cleared to minimum SC level
Responsibilities
  • Lead and direct a multi-disciplinary engineering team to identify the feasibility of the approach
  • Develop an outline requirement specification
  • Identify the TRL levels and associated development plans to deliver a viable solution
  • Prepare a plan for the delivery of the appraise and select phase of the project. Deliver to the agreed time, cost and quality
  • Lead the multidiscipline teams, responsible for estimating, scheduling, forecasting and the production of the agreed design deliverables
  • Manage the DSA teams in production of deliverables
  • Develop the safety case(s), including attendance at HAZOPs, support to safety assessment, review of ES, and production of substantiation documentation
  • Identify additional resource demand where required to ensure all deliverables can be originated and checked in accordance with the project schedule
  • Interface with other Project Discipline leads within the project(s)
  • Interface and engage with Site clients and stakeholders

Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

Paris, France

Founded

1966

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Simplify Jobs

Simplify's Take

What believers are saying

  • H1 2026 revenue grew 2.5% organically; nuclear grew 8.0%.
  • France delivered 4.2% organic growth on new-builds, fuel cycle, and digitalisation.
  • UK momentum accelerated after April 2026 SMR, CPS2, and MoD framework wins.

What critics are saying

  • Nuclear concentration leaves Assystem exposed if French EPR2 schedules slip beyond 2027.
  • H1 2026 international revenue fell from currency hits and project endings in India.
  • Rolls-Royce SMR still needs FID, regulatory clearance, and site decisions before revenue scales.

What makes ASSYSTEM unique

  • Assystem derived 81% of H1 2026 revenue from nuclear engineering.
  • April 2026 UK wins placed Assystem on CPS2 and MoD delivery frameworks.
  • January 2025 Mactech Energy Group deepened Assystem's UK nuclear construction capabilities.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Unlimited Paid Time Off

Flexible Work Hours

Remote Work Options

Paid Vacation

Paid Holidays

Hybrid Work Options

401(k) Retirement Plan

Wellness Program

Mental Health Support

Gym Membership

Professional Development Budget

Conference Attendance Budget

Stock Options

Company Equity

Phone/Internet Stipend

Home Office Stipend

Relocation Assistance

Childcare Support

Meal Benefits

Parental Leave

Family Planning Benefits

Fertility Treatment Support

Company News

Yahoo Finance
Jul 23rd, 2026
Assystem's H1 revenue rises 2.5% organically to $371.2M on nuclear growth

Assystem reported consolidated revenue of โ‚ฌ328.5 million for the first half of 2026, representing organic growth of 2.5% despite a 1.9% negative currency effect. The French engineering group's nuclear activities drove performance with 8.0% organic growth, accounting for 81% of total revenue. Revenue in France rose 4.2% organically to โ‚ฌ201.1 million, led by strong momentum in nuclear new-builds and fuel cycle activities. International operations generated โ‚ฌ127.4 million, remaining stable organically despite currency headwinds from the pound sterling, Indian rupee, and Saudi riyal. The UK showed robust growth in civil nuclear engineering and defence. However, business volumes declined in the Middle East, Central Asia region and India due to project endings and slower contract phasing. Assystem confirmed its full-year 2026 targets.

Yahoo Finance
Apr 23rd, 2026
Assystem posts $187.4M Q1 revenue with 2.2% organic growth driven by nuclear sector

Assystem, an international engineering group, reported first-quarter 2026 consolidated revenue of โ‚ฌ165.8 million, representing 2.2% organic growth driven by strong nuclear sector performance of 8.0%. Nuclear activities accounted for 81% of total revenue, up from 76% in the prior year. French operations grew 4.4% to โ‚ฌ102.6 million, driven by momentum in fuel cycle activities, new-builds and digitalisation. International revenue declined 7.1% to โ‚ฌ63.2 million, primarily due to a 6.0% negative currency effect from the pound sterling, Indian rupee and Saudi riyal. The UK showed robust growth in civil nuclear engineering and defence. Assystem secured key positions on government frameworks and its client Rolls-Royce SMR signed a contract with Great British Energy for three small modular reactors.

Bdaily
Jan 30th, 2025
Assystem expands UK footprint with takeover

A global nuclear engineering firm has strengthened its UK presence with the acquisition of a specialist construction company. Paris-headquartered Assystem hasโ€ฆ | North East | Construction | Engineering | International | Energy | Mergers & Acquisitions | Commercial Partnerships | Manufacturing & Construction |

Assystem
Jan 17th, 2024
Assystem acquires KEOPS Automation, engineering specialist in automated systems and data enhancement

Assystem, an international engineering, digital services and project management company, has acquired 100% of the shares of KEOPS Automation, a French company specializing in the integration of industrial operating platforms and the enhancement of their data (industrial OT and IT, automated systems, supervision systems, BI applied to manufacturing).

Global Construction Review
Jan 5th, 2024
Franceโ€™s Assystem acquires Indiaโ€™s L&T Infrastructure Engineering - Global Construction Review

France-headquartered engineer and project manager Assystem has acquired Indiaโ€™s L&T Infrastructure Engineering, a subsidiary of the Larsen & Toubro group.