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ASSYSTEM

Engineering services for design, construction, commissioning

Ingénieur d'études Fluides

Thermal & Fluids 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 qualification with a specialization in process, thermodynamics, or fluids.
  • Initial experience in nuclear reactor engineering.
  • Good command of Microsoft Office, particularly Word and Excel.
  • Knowledge of the nuclear field; knowledge of pressurized water reactor operation is an advantage.
  • Knowledge of computational fluid dynamics software such as StarCCM, Fluent, or Satrune is strongly appreciated.
  • Ability to work autonomously and rigorously, with curiosity and an interest in technical work.
  • Ability to work in a team, analyze issues, raise alerts, and communicate effectively.

Responsibilities

  • Model the thermo-hydraulic behavior of circuits, including mass and heat transport and pressure losses.
  • Size components such as pumps, heat exchangers, and piping.
  • Create piping and instrumentation diagrams.
  • Write analysis notes.
  • Resolve technical problems.
  • Monitor contracts and clarify technical matters with suppliers.
  • As needed, conduct studies or produce documents for the Project department or work package, including delegated management of hardware modifications from EDF.
  • Interact with the Project Engineer responsible for the case at least weekly when carrying out Project department or work-package activities.

Desired Qualifications

  • Knowledge of pressurized water reactor operation.
  • Knowledge of computational fluid dynamics software such as StarCCM, Fluent, or Satrune.

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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