CFD & Thermal-hydraulics Expert

TRACTEBEL; Ukkel; Hybride; EUR 70 000 - 110 000; Plein temps

Avantages offerts par ce poste

Meal vouchers

Hospitalisation insurance

PC purchase plan

ENGIE stock options

Mobility budget (company car/train +/‑

Flexible hybrid work (2 days at home)

Holidays: 32 days (+5)

Résumé du poste

Tractebel Engineering seeks a skilled engineer to perform licensing studies and complex thermalhydraulic analyses for nuclear reactor systems, using industry tools such as RELAP5, ATHLET or CATHARE.

You will join a team of about 20 engineers in the Nuclear and Industrial Safety department, collaborating with customers and Safety Authorities, and benefiting from a hybrid work setup and a comprehensive benefits package.

Qualifications

• Master in Engineering or Physics is required.
• Minimum 5 years in analysing Design Base Accidents and familiarity with international codes and standards.
• Knowledge of the Belgian nuclear domain.
• Fluent in English and French or Dutch.
• Interest in becoming a high‑level expert in this topic.
• Knowledge of task automation through scripts (e.g., Python) is a plus.

Responsabilités

• Perform Licensing Studies.
• Conduct complex thermalhydraulic analyses for nuclear reactor systems using standard tools (RELAP5, ATHLET, CATHARE or equivalent).
• Defend work to customers and Safety Authorities.
• Write technical reports on the studies performed.
• Work in a team of about 20 engineers with close interaction with colleagues.

Connaissances

English communication

French/Dutch language skills

Analytical thinking

Team collaboration

Formation

Master in Engineering

Master in Physics

Outils

Python scripting

Description du poste

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

• Licensing Studies (SGTR, FWLB,…)
• PWR Plant Operation Support
• Computational Fluid Dynamics
• Analysis of plant behaviour (e.g. Natural Circulation, …)
• Severe Accidents Studies
• PSA Level 2

What We Offer

• Tractebel is more than a place to work. It’s your chance to evolve alongside top experts on impactful projects around the world. It’s an environment built on team spirit, where you can reach your highest potential.
• We actively support the development of our people, and the opportunities for growth within the ENGIE Group are wide open.
• We offer a competitive salary package including representation allowances, double paid holidays, meal vouchers, eco cheques, bonuses, hospitalization insurance, PC purchase plan, ENGIE stock options, and more.
• Our mobility plans are customizable to your needs, including a company car, train pass, bike lease, or combinations thereof. You can also swap your company car for the flexible and tax-friendly Belgian Mobility Budget!
• Flexible, hybrid arrangements enable working from home (2 days per week), on‑site or on the go or even part time. Tractebel participates in your home office expenses, through advantageous purchase programs and generous contributions to your internet and mobile plans.
• Holidays: 32 days with opportunity to buy 5 extra days.
• To celebrate our successes, and just have fun, we get together for team sports, afterworks, team building activities, our annual party, and more.

Your Key Responsibilities

• You are in charge of performing Licensing Studies;
• You perform complex thermalhydraulic engineering analysis in the domain of nuclear reactor systems using industry-standard methods and simulation tools (e.g. RELAP5, ATHLET, CATHARE or any equivalent recognized software);
• You defend your work to the Customer and the Safety Authorities;
• You write technical reports about the studies performed;
• You work in a team of about 20 engineers, in close interaction with your colleagues.

We would love to hear from people with

• You obtained a Master in Engineering or a Master in Physics;
• You have at least 5 years in analysing Design Base Accidents (Class III and Class IV) and you are being familiar with international codes and standards;
• You have knowledge of the Belgian nuclear domain;
• You are able to communicate (write/speak) in English and French or Dutch;
• You are interested to become a high‑level expert in this topic;
• Knowledge of task automation through scripts (eg: Python) is an asset

Our Recruitment Process

Pre‑screener conversation / HR in‑depth interview on‑site / in teams with the Talent Acquisition Partner

Final business interview on‑site with your future manager

Research shows that men apply when they meet 60% of the requirements while women only apply when they are convinced they meet 100%. Don’t let that hold you back – we’d love to hear from you!

Who We Are

Ready to engineer your positive impact? Then join Tractebel, part of the ENGIE Group, and our 5,000 passionate experts around the globe, driven by shaping a more sustainable world every day. Make your contribution to carbon neutrality in markets like nuclear, renewables, power & gas, electrical grids, hydropower & dams, water resources & supply, desalination, complex & high‑tech buildings, transport infrastructures, and ports & waterways.

Our top priorities are people, ethics, safety, and sustainability. With Tractebel, you are uniquely positioned to make a positive impact on global net‑zero targets. The driving force behind reaching these goals is our greatest asset: you. Our people come first, and our strength is in our diversity. Because diversity leads to fresh perspectives that drive performance and innovation, we welcome all applicants and remain committed to an inclusive workplace.

Find out more about Tractebel, our activities and why you should join us here !

At ENGIE, every talent has a role to play in accelerating the energy transition. Make a difference and enjoy a fulfilling professional experience. Take on exciting challenges and build a career path that reflects who you are. Join us and be part of the adventure of the century!

Business Unit: Tractebel

Divisie: Tractebel Div2

Juridische entiteit: TRACTEBEL ENGINEERING S.A. (BE)

Naam Organisatie: Tractebel

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