Severe Accident Engineer

Requisition ID:  19551


Severe Accident Engineer


ENGIE is a global energy company, a leading provider of electricity, natural gas, and energy services. With 154,950 employees in more than 70 countries worldwide, ENGIE achieved revenue of €69.9 billion in 2015. ENGIE is committed to being a leader in the energy transition.

We are looking for talented and motivated people to create the future of energy. Join a rewarding and flexible work environment that encourages innovation and creativity, and help us meet the energy challenges of today and tomorrow. Tractebel’s Global Business area NUC seeks for its “Safety and Nuclear Engineering” Department a (m/f) :


Within the ‘Safety and Nuclear Engineering’ department of the Global Business Area NUC of Tractebel Engineering, the CFD & Accident studies Group is in charge, among others, of the following disciplines:


  • Licensing Studies (SGTR, FWLB,…) – contributing to the Safety demonstration of Nuclear installation;
  • PWR Plant Operation Support (transient analysis, procedure optimization,…);
  • Performing design/operational support studies using several scientific tools as:
    • Computational Fluid Dynamics (CFD) aiming high fidelity/small scale thermal-hydraulic effects ;
    • System tools (such as RELAP, TRACE and/or FlowMaster) aiming system scale analysis;
  • Performing Severe Accidents Studies using several scientific tools aiming the system scale response;
  • Performing Multi-scale and Multi-physics simulations using the CERES Tractebel platform;
  • Performing Probabilistic Safety Assessment (PSA) for Level 2 aiming releases to the environment.

Your function


  • You are in charge of performing Severe Accident Studies using the most appropriate tool;
  • You perform complex engineering analysis in the domain of nuclear reactor using industry-standard methods and simulation tools (e.g. MELCOR, ASTEC Severe Accidents modeling tools);
  • You participate to the development and the analysis associated with PSA level 2 evaluation;
  • You can participate to complex multi-disciplinary discussions with the building a multi-physics and/or multi-scale analysis involving CERES platform;
  • You defend your work to the Customer and the Safety Authorities;
  • You write technical reports about the studies performed;
  • You work in close interaction with your 17 colleagues dispatched between France (Lyon) and Belgium (Namur and Brussels).




  • You obtained a Master in Engineering or a Master in Physics or Chemistry;
  • You have a prior industrial experience in performing licensing study for nuclear installations and you are familiar with international codes and standards;
  • You have knowledge of the Belgian nuclear domain;
  • You are able to communicate (write/speak) in English and Dutch or French;
  • You are interested to become a high-level expert in this topic;
  • Knowledge of task automation through scripts (e.g.: Python, bash,…) is an asset;
  • Knowledge of multi-physics and/or multi-scale technics is an asset.


What we offer

  • An interesting and varied job in an international environment with a good work/life balance;
  • A stable work environment where professional growth and development are stimulated (via the Tractebel School and the ENGIE University);
  • An attractive compensation package with fringe benefits;
  • A permanent contract to ensure the roles offered are in accordance with your skills, interests, career goals and lifestyle.
  • #TRACTREF-040509|29|01|041021#
Business Unit:  GBU Energy Solutions
Division:  ES Tractebel L2
Contract Type:  Permanent
Job Type:  Full - Time
Professional Experience:  Skilled ( >3 experience <15 years)
Education Level:  Master's Degree