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About the company

Realis Simulation is a trusted partner to the world’s leading transport manufacturers, OEMs and Tier 1 suppliers. We develop simulation software that delivers fast, repeatable and predictive results across established and emerging propulsion technologies, supporting the global journey to net-zero emissions.

Our products model all major propulsion technologies and allow organisations to rapidly test scenarios in a cost-effective and scalable way, reducing the need for physical hardware testing. Our tools are used to support design and calibration programmes across sustainable fuels, efficient powertrain systems, advanced transmission design, and optimised hybrid solutions.

About the role

We are looking for an experienced Senior Combustion Software Engineer to join the VECTIS 3D CFD product development team. In this role, you will design, develop, maintain, and continuously enhance combustion models within the VECTIS 3D CFD product, contributing directly to advanced simulation solutions used by customers worldwide.

The ideal candidate brings strong knowledge and hands-on experience in combustion modelling in one or more of the following areas: detailed chemical kinetics (particularly for e-fuel applications), combustion modelling within RANS and/or LES turbulence frameworks, and Internal Combustion Engine (ICE) simulations for automotive, marine, or power generation applications.

Main responsibilities

• Design and develop combustion models and software features for the VECTIS 3D CFD product
• Participate in customer discussions and collaborate with product and commercial teams to understand requirements and propose technical solutions
• Specify, design, and implement high-quality software code with minimal supervision, aligned with existing architecture
• Translate functional and technical requirements into clear design documentation and production-ready implementations
• Maintain and enhance existing software to ensure reliability, performance, and scalability
• Define and execute tests to verify code correctness and resolve issues identified through internal or external testing
• Write and maintain technical documentation for new features and enhancements
• Deliver projects in line with agreed specifications, timelines, and ISO 9000 quality standards
• Provide second-line technical support and user training, including occasional off-site support
• Act as a technical liaison with third-party vendors and external partners
• Conduct directed research under supervision, developing knowledge in relevant programming, engineering, and mathematical methods

Who we are looking for?

The ideal candidate should possess:

• MSc degree in Combustion or a related field (PhD strongly preferred)
• At least 3 years’ experience in research, development, or application engineering in combustion
• Strong knowledge of combustion modelling, ideally in one or more of the following areas:
  • Detailed chemical kinetics (especially e-fuel applications
  • Combustion modelling within RANS and/or LES turbulence frameworks
  • ICE simulations for automotive, marine, or power generation applications
• Solid understanding of fluid mechanics and computational methods
• Experience with CFD applications using in-house, open-source, or commercial tools
• Experience developing and implementing computational models
• Excellent programming skills in FORTRAN 90/95/2003 (knowledge of C/C++ is an advantage)
• Ability to work independently and collaboratively in a geographically distributed team
• Familiarity with Linux and/or Windows development environments and version control systems
• Professional working proficiency in English (additional languages are a plus)

Why join us?

• A collaborative, supportive, and pragmatic working culture within a small, expert engineering team
• The opportunity to work on long-term, technically challenging products used by leading global customers
• Flexible working arrangements, including remote or hybrid options
• A high degree of autonomy and trust, with real influence on technical decisions
• Exposure to cutting-edge combustion and simulation technologies, including e-fuels and advanced CFD methods
• Competitive salary and benefits package, reflecting experience and seniority
• A stable environment focused on quality, engineering excellence, and sustainable development

If you possess the required qualifications and are interested in this position, please submit your resume to Nada.Rehakova@realis-simulation.com.

We look forward to hearing from you!