We are looking for an
Internship/PhD – Plasma Torch Simulation Engineer (m/f/d)
Paul Wurth as a global leader in ironmaking technology is actively working on 
CO2 reduction approaches for the blast furnace-based iron production route. 
Therefore, a dedicated R&D group focusing on different CO2 reduction techniques 
along with the usage of green energy and hydrogen has been set up. One of the 
most promising research paths for the modernization of the blast furnace steel 
production route is the EASyMelt concept developed by Paul Wurth and integrating 
plasma torches.  
As a Plasma Torch Simulation Engineer, your primary responsibility will be to 
design and simulate plasma torches for industrial applications. You will work 
closely with a team of engineers and researchers to develop innovative solutions 
for plasma torch technology. 
Your main tasks (during internship):
•	Running the developed OpenFOAM Solver for different scenarios
•	Estimating of thermodynamic and transport properties of the plasma using 
statistical mechanics
Your main tasks (during PhD):
•	Develop a numerical model for plasma torches using simulation software 
such as OpenFOAM 
•	Collaborate with the experimental team to validate the simulation 
results and improve the accuracy of the models 
What do we expect?
•	Bachelor's or Master's degree in Mechanical Engineering, Chemical 
Engineering, Physics, or a related field 
•	Strong understanding of numerical methods, thermodynamics, and fluid 
dynamics 
•	Strong understanding of MHD and statistical mechanics
•	Experience in numerical simulations using software such as OpenFOAM
•	Familiarity with programming languages such as C++ or Python 
•	Strong analytical and problem-solving skills 
•	Ability to work in a team environment 
•	Proficiency in English. French or German language skills are considered 
an advantage.
What do we offer?
•	Internship supported by a PHD in an international team in one of 
Luxembourg’s leading industrial players
•	Interesting development possibilities in an international, innovative 
and dynamic company
•	Flexible working hours and entitlement to leave, which exceeds the legal 
frame
•	Exciting and diverse topics and work streams.

Paul Wurth S.A. is an international engineering company with deep roots in 
Luxembourg. We rely on the competence of our 500 highly motivated employees. We 
are a global leader in ironmaking technologies, driven by innovation and taking 
an active role in shaping a sustainable and carbon-free industry.
As part of the global SMS group, a leading technology supplier and plant builder 
for the metals industry employing 15,000 people worldwide, we are a strong 
partner for our customers in the steel industry and beyond.