What will you be doing? 

The Role

We are seeking a Performance Modelling Engineer with expertise in Gas Turbine Performance, Transient and Steady State analysis. The successful candidate will work with advanced modelling tools to evaluate engine behaviour across the full operating envelope, including SCO3 cycle applications, and contribute technical insight to support design, integration, and testing programmes.

Key Responsibilities:

• Develop, validate, and maintain Gas Turbine performance models, with a focus on steady state and transient behaviour.
• Apply thermodynamic principles such as the Brayton cycle to performance studies.
• Conduct simulations and cycle analysis for SCO3 applications.
• Work with modelling environments such as NPSS or equivalent (GasTurb, PROOSIS, RR toolsets).
• Post-process data and create automation tools using Python.
• Use object-oriented programming (C++ preferred) to enhance and customise modelling workflows.
• Present and communicate complex technical results to internal and external stakeholders.

Experience, skills and qualifications required: 

• Strong experience in Gas Turbine performance engineering, including steady state and transient analysis.
• Understanding of SCO3 cycles and their application in propulsion and energy systems.
• Proficiency in performance toolsets such as NPSS, or transferable experience with GasTurb, PROOSIS, RR performance tools.
• Programming skills in C++ and Python.
• Strong technical communication and stakeholder engagement skills.

Why join us? 

We foster a community of dually talented individuals who are both entrepreneurs and technology specialists. Our teams embody the spirit of innovation and entrepreneurship, enabling us to develop solutions most efficiently. 

Our commitment to sustainable growth is unwavering, and we continuously strive for accelerated transformation and continuous improvement. Through ALTEN labs, mentoring programs, internal universities, and more, we are always pushing boundaries and embracing new possibilities. 

We offer incredible opportunities to join inspiring projects in the most innovative companies. 

We prioritise your career development with personalised support plans tailored to your own aspirations. We're here to empower you and help you reach your full potential. 

Join our passionate team and start building tomorrow, today! 

In short you get: 

• A personalised career path and a rewarding management style 
• A chance to work on the most exciting engineering projects and technologies along with Premium Customers
• A huge diversity of engineering projects and industries
• A competitive salary
• Private Medical Insurance
• Pension Scheme
• Cycle-to-work Scheme among many additional benefits
• Social atmosphere, regular gatherings, and team buildings
• Flexible way of working (role dependent)