About Exergy3
Exergy3 is a pioneering company specialising in ultra‑high temperature thermal energy storage technology, with a mission to drive the decarbonisation of heat across Europe and beyond. As a spin‑out from the University of Edinburgh, we are at the forefront of clean heat innovation, providing scalable, efficient, and cost‑effective decarbonisation solutions for industrial processes and large‑scale building heating.
Job Overview
We are looking for two highly motivated and technically rigorous Senior Scientists to join our growing team in Edinburgh and Munich. You will play a critical role in advancing the scientific understanding of our thermal energy storage systems, leading both numerical and experimental investigations into material behaviour, heat transfer and fluid flow. This role bridges fundamental research with applied engineering, supporting development from early‑stage concepts through to prototype demonstration.
Qualifications & Experience
- PhD in a relevant physical science discipline (e.g. Mechanical Engineering, Electrical, Chemical Engineering, Physics, or similar)
- Expertise in numerical modelling of heat transfer and/or fluid flow, or experimental work involving heat transfer and/or fluid flow
- Experience conducting rigorous scientific research and experiments from concept through to validation
- Ability to work across multidisciplinary teams, including engineering and technical functions
- Excellent communication skills in English, both written and verbal
Key Responsibilities
- Develop numerical or physical models of thermal and fluid systems (e.g. CFD, reduced‑order models)
- Perform modelling of heat transfer, thermos‑mechanical and fluid flow
- Support performance prediction and optimisation of thermal energy storage systems
- Design and execute lab‑scale experiments to validate models
- Develop experimental setups, instrumentation, and measurement methodologies
- Analyse experimental data and derive actionable insights
- Contribute to R&D activities across TRL 1‑7
- Support scaling from lab experiments to prototype systems
- Support prototype testing and system validation
Technology Development & Prototyping
- Contribute to prototype design, build, and demonstration activities
- Work closely with engineers to integrate scientific findings into system design
- Support troubleshooting and performance improvement of systems
- Collaborate with internal and external stakeholders
- Document findings in reports, presentations, and technical documentation
- Write or contribute to patents
Collaboration & Communication
- Communicate technical insights clearly to multidisciplinary teams
- Contribute to knowledge sharing and internal processes
- Support development of IP and technical outputs where appropriate
Desirable Additional Skills
- Engineering or physical sciences background (mechanical, chemical or electrical)
- Programming and coding experience (Python, MATLAB, C++)
- Experience performing R&D across TRL 1‑7, including simulations
- Experience with lab‑scale testing, prototyping, and demonstrations
Useful Experience
- Energy systems and energy storage
- Thermal engineering and heat transfer
- Computational Fluid Dynamics (CFD)
- Engineering design and product development
- High‑temperature thermal systems
- Thermos‑mechanical material, component or system modelling
Benefits
- Be part of a dynamic and innovative company at the forefront of clean energy technology
- Play a pivotal role in driving the growth and success of Exergy3
- Competitive salary
- Opportunities for professional growth and development
- Contribute to a sustainable future by promoting clean heat solutions
- Be a key contributor in turning emerging technologies into commercially viable products
- Work at the intersection of academic innovation and industrial impact, helping scale clean heat solutions across Europe and the world
What we offer
- A supportive, inclusive team culture. We value diverse perspectives and encourage collaboration
- 34 days annual leave (25 flexible + 9 fixed annual leave days which can either be the Scottish Bank Holidays or aligned to the school term breaks in your council area of residence)
- Hybrid working
- Compressed hours (35 hr/week)
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