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ASSYSTEMAS

Mechanical Planning Engineer - HVAC

Assystem is an international engineering and project management company focused on accelerating the energy transition by providing services and digital solutions for complex infrastructure, particularly in the nuclear and renewable energy sectors.

ASSYSTEM

Employee count: 5000+

United Kingdom only

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Company Description ⚡️ About Assystem

At Assystem, our mission is to accelerate the energy transition worldwide. 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. Join us in revolutionizing the energy sector and making a significant global impact.

Why Join the Community of Switchers?

  • Be part of one of the top three largest nuclear engineering companies globally.
  • At Assystem, you'll contribute to groundbreaking projects that push the boundaries of innovation and engineering excellence.
  • Join a community committed to driving forward the future of energy.

Job Description

This role supports major nuclear programmes, requiring candidates within commuting distance of Bridgwater or willing to relocate with relocation assistance available. You will lead integrated HVAC planning activities across Nuclear Island, Conventional Island and Balance of Plant scopes. The role supports complex HVAC construction, commissioning and system handover within a highly regulated nuclear environment.

  • ️Develop integrated HVAC construction and commissioning schedules using Primavera P6
  • ️Coordinate HVAC installation sequencing with multidisciplinary construction and engineering teams
  • ️Plan ductwork, ventilation, chilled water and containment HVAC installation activities
  • Monitor schedule performance, critical path impacts and mitigation recovery programmes
  • Support mechanical completion, testing, balancing and commissioning turnover activities
  • Produce KPI dashboards, variance analysis and detailed project progress reporting
  • Interface with subcontractors, commissioning teams and client project stakeholders
  • ️Ensure compliance with nuclear quality assurance and governance requirements
  • ⚙️Integrate procurement, manufacturing and installation activities into project schedules
  • Support workface planning and short-term construction look-ahead programme development

Qualifications

  • Degree, HNC/HND or equivalent engineering or construction management qualification
  • Proven Planning Engineer experience on major HVAC or mechanical installation projects
  • ️Strong understanding of industrial HVAC systems and installation methodologies
  • Advanced knowledge and practical experience using Oracle Primavera P6
  • Experience producing fully logic-linked construction and commissioning schedules
  • Background within nuclear, energy, oil and gas or regulated industries
  • Strong understanding of commissioning, turnover and mechanical completion processes
  • Working knowledge of NEC contracts and project controls methodologies
  • Strong analytical, reporting and critical path analysis capability
  • Experience using Microsoft Excel, Power BI or Synchro beneficial

Additional Information

Why Apply?

Join Assystem and become a key player in delivering critical nuclear projects that shape the future of energy. Embrace this opportunity to excel in a dynamic environment where your expertise and leadership will drive global innovation.

Your Benefits Package

  • Hybrid Working – Flexibility to work from home and the office
  • ️25 Days Annual Leave
  • Bank Holidays
  • Buy Sell Holiday – Make your time off work for you
  • 8% Company Pension Contributions
  • ️Income Protection 3x Salary Death-in-Service Cover
  • Competitive Sick Pay – Support when you need it
  • Healthcare Cash Plan – Claim back on dental, optical more
  • Free Digital Gym Access – Expert-led fitness classes
  • Exclusive Discounts – Restaurants, days out top brands
  • 24/7 Employee Support Line – Mental health, financial legal help
  • Cycle to Work Scheme – Save money go green
  • Free Flu Jabs Eye Test Vouchers
  • Paid Professional Membership Fees ❤️
  • Volunteer Days – Make a difference on company time

Bring your unique contributions and help us shape the future.

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 people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future

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Full Time

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United Kingdom +/- 0 hours

About ASSYSTEM

Learn more about ASSYSTEM and their company culture.

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Assystem is an international engineering and project management company with a core mission to accelerate the energy transition globally. With nearly 60 years of experience, particularly in highly regulated sectors demanding stringent safety and security, Assystem provides engineering services, project management, and digital solutions to optimize the performance of complex infrastructure assets throughout their lifecycle. The company is recognized as one of the top three nuclear engineering firms worldwide and plays a significant role in developing low-carbon electricity through nuclear and renewable energy sources. Assystem's expertise extends to renovating power grids and advancing new electricity applications, such as green hydrogen for decarbonizing transport and industry.

Founded in 1966 to support the commissioning of France's nuclear power fleet, Assystem has since expanded its operations to 12 countries across Europe, Asia, Africa, and the Middle East, employing approximately 7,500 to 8,000 'switchers' dedicated to this energy transition. The company serves a wide range of industries, including energy, nuclear, defense, transportation, and life sciences. Assystem is a key partner to major industrial groups such as EDF, CEA, Framatome, Orano, Rolls Royce, and SNCF. The company emphasizes digital transformation as a crucial lever for managing the increasing complexity of projects, which face more stringent safety, security, economic, and environmental standards. Assystem invests in new methodologies and tools, including Advanced Workpackaging, AI, and PLM (Product Lifecycle Management) to enhance project performance and drive innovation. The company is also committed to corporate social responsibility, focusing on ethical practices, responsible employment, creating societal value, and managing its environmental footprint.

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