Full-Time

Project Manager

Mechanical

ASSYSTEM

ASSYSTEM

5,001-10,000 employees

Engineering services for design, construction, commissioning

No salary listed

Wellington, UK

Hybrid

Hybrid role with 3 days on-site and 2 days remote per week.

Category
Business & Strategy (1)
Required Skills
Risk Management

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Requirements
  • Degree in Mechanical Engineering or closely related discipline
  • Background in mechanical delivery on major construction projects
  • Strong project management and construction planning experience
  • Experience managing mechanical contractors and work packages
  • Understanding of engineering design through to site execution
  • Ability to manage cost, risk, change and schedule effectively
  • Experience working within regulated or safety-critical environments
  • Confident communicator across multidisciplinary teams
Responsibilities
  • Lead mechanical-led delivery activities within a defined construction area
  • Coordinate mechanical engineering, construction and installation sequencing
  • Develop and maintain integrated Level 4 construction schedules
  • Identify mechanical and construction risks and drive mitigation actions
  • Manage interfaces between mechanical packages and adjacent areas
  • Lead engagement with Tier 1 contractors and supply chain partners
  • Support resolution of construction and installation hotspots
  • Ensure safe systems of work and quality standards are maintained
  • Control cost, change and schedule impacts within the area
  • Capture lessons learned and drive continuous improvement practices
Desired Qualifications
  • Nuclear experience is welcome, but not essential
  • If you meet around 80 percent of the criteria and are motivated to develop further, we would strongly encourage you to apply

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 nuclear revenue grew 8.0% organically, reaching 81% of sales.
  • France grew 4.2% organically on nuclear new-builds and fuel-cycle work.
  • UK civil nuclear engineering, defence, and SMR frameworks create repeatable project pipelines.

What critics are saying

  • Revenue is heavily concentrated in nuclear, increasing exposure to schedule delays.
  • Project endings and slower phasing already hurt India and Middle East volumes.
  • Currency weakness in sterling, rupee, and riyal reduces reported growth.

What makes ASSYSTEM unique

  • Founded in 1966, Assystem specializes in nuclear engineering lifecycle services.
  • Its French nuclear roots support commissioning, design, construction, and supervision.
  • Mactech Energy Group expanded its 2025 nuclear-industry footprint.

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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

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.

Tech.eu
Feb 11th, 2022
Germanyโ€™s SQS acquired by Assystem Technologies for over ยฃ280 million

German company Software Quality Systems (SQS), a provider digital quality assurance services,โ€ฆ