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ASSYSTEM

Engineering services for design, construction, commissioning

HVAC Engineer - Bureau d'études

Building Services EngineeringConfirmed live in the last 24 hours
Full-timeMarseille, France€35k - €44k /yrIn-person

About the Job

Requirements

  • A Bac+5-level engineering or university education with an HVAC or thermal specialization.
  • Initial experience in nuclear reactor engineering.
  • Proficiency with Microsoft Office, particularly Word and Excel.
  • Knowledge of HVAC/CVC systems and applicable regulations, particularly RT.
  • Knowledge of nuclear systems, particularly pressurized water reactor operation, is beneficial.
  • Knowledge of heat-transfer software such as ClimaWin or THBAT is beneficial.
  • Ability to work autonomously and rigorously, with technical curiosity, analytical and escalation skills, and effective teamwork and interpersonal skills.

Responsibilities

  • Perform thermal modeling of buildings.
  • Size HVAC/CVC networks.
  • Prepare routing diagrams.
  • Write analysis reports.
  • Resolve technical problems.
  • Monitor contracts and clarify technical matters with suppliers.
  • When needed, conduct studies or produce documents for the Project department or Workpackage, including delegated management of material modifications from EDF.
  • Coordinate with the project engineer responsible for the case at least weekly when carrying out Project department or Workpackage work.

About the Company

ASSYSTEM

Engineering services for design, construction, commissioning

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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