Advanced Thermal Modelling Engineer

Missionat Vertical Aerospace; Bristol; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

26 days holiday

Company pension

Performance bonus

Help@Hand digital health service

Share scheme

Breakfast on us

Job summary

Vertical Aerospace is seeking an Advanced Thermal Engineer in Bristol to shape the thermal performance of our eVTOL aircraft. You will lead battery thermal CFD analysis and develop high-fidelity models across battery and powertrain systems.

You will correlate simulations with test data, influence design decisions, and work with design, test and systems teams to deliver certifiable solutions. Strong communication and autonomous work style are essential.

Qualifications

• Degree in Mechanical, Aerospace or related engineering discipline.
• Strong experience in thermal CFD analysis (e.g. Ansys Fluent, Star-CCM+)
• Experience in battery thermal modelling preferred or similar powertrain modelling
• Knowledge of heat transfer, fluid dynamics and thermal management systems
• Experience using MATLAB / Simulink / Simscape
• Proven ability to correlate simulation results with test data
• Understanding of how system-level requirements influence modelling
• Strong analytical mindset and ability to work from first principles

Responsibilities

• Lead battery thermal CFD analysis, supporting design verification across key programme milestones.
• Develop high-fidelity and system-level thermal models for battery and vehicle systems.
• Contribute to powertrain and avionics thermal analysis to support overall vehicle performance.
• Support design decisions through simulation, trade studies and engineering insight.
• Work cross-functionally with design, test and systems teams to align modelling with real-world outcomes.
• Correlate simulation with test data to validate models and improve confidence in results.
• Define modelling approaches to answer complex engineering questions.
• Communicate findings clearly to technical and non-technical stakeholders.
• Contribute to development of tools, methods and best practices in thermal modelling.
• Produce high-quality documentation to support design and certification.
• Engage with external partners including universities and research organisations.
• Provide technical oversight and guidance to junior engineers.

Skills

Thermal CFD analysis

Battery thermal modelling

Ansys Fluent

Star-CCM+

MATLAB/Simulink

Heat transfer

System-level thinking

Clear communication

Education

Degree in Mechanical or Aerospace engineering

Tools

MATLAB

Job description

Our MissionAt Vertical Aerospace, we are pioneering the way for electric aviation. The Valo, our eVTOL (electric, vertical, take-off and landing), 'zero emissions' aircraft will set a new safety standard for how we will navigate the sky.We won't realise our mission following the same legacy processes and traditions our predecessors followed, instead, we want to 'redefine' aerospace best practices. We are growing quickly from a prototype business to a scaling SME, and the next few years will be critical to our success and delivering on our ambitious goals. Valo is targeting airliner-level safety certification in 2029 ahead of entering service with our airline and operator customers.We're now looking for an Advanced Thermal Engineer to play a key role in shaping the thermal performance of our aircraft. This role sits at the heart of our battery and powertrain development, combining high-fidelity modelling with system-level thinking to ensure safe, efficient and certifiable
performance.

What you'll do

• Lead battery thermal CFD analysis, supporting design verification across key programme milestones
• Develop and apply high-fidelity and system-level thermal models across battery and wider vehicle systems
• Contribute to powertrain and avionics thermal analysis, supporting overall vehicle performance
• Support design decisions through simulation, trade studies and engineering insight
• Work cross-functionally with design, test and systems teams to align modelling with real-world outcomes
• Correlate simulation with test data to validate models and improve confidence in results
• Define appropriate modelling approaches to answer complex engineering questions
• Communicate findings clearly to both technical and non-technical stakeholders
• Contribute to the development of tools, methods and best practices in thermal modelling
• Produce high-quality technical documentation to support design and certification
• Engage with external partners including universities and research organisations
• Provide technical oversight and guidance to junior engineers, reviewing their work in detail and supporting the development of robust, high-quality analysis across the team

What you’ll bring

• Degree in Mechanical, Aerospace or a related engineering discipline
• Strong experience in thermal CFD analysis (e.g. Ansys Fluent, Star-CCM+)
• Experience in battery thermal modelling strongly preferred but Modelling experience in alternative Powertrain systems will be considered
• Knowledge of heat transfer, fluid dynamics and thermal management systems
• Experience using MATLAB / Simulink / Simscape
• Proven ability to correlate simulation results with test data
• Understanding of how system-level requirements (performance, safety, durability) influence modelling
• Strong analytical mindset with the ability to work from first principles
• Ability to work autonomously and deliver in a fast-paced environment
• Clear and confident communication skills

What can you expect from us?

We're on a mission. Where others see limits, we
see opportunity, and we work at pace. Working at Vertical isn't your average role but for those seeking a challenge, a flexible, supportive organisation and an incredible team; working here is an opportunity to do the best work of your career.Our approach promotes ingenuity and courage, while our environment builds success through diligence in safety and being open in the way we work. The only way we're going to assure the next chapter of aviation history is by working as a team, relentlessly, towards our goal.

Our benefits

• 26 days holiday, plus bank holiday
• 5 extra days per year to buy (or sell)
• 5 extra days holiday when you get married or enter a civil partnership
• Additional 4% of your salary to spend on extra benefits
• Award-winning digital health and wellbeing service (Help@Hand)
• Company performance based bonus - rewarding company and individual
• Company Share Scheme - open to every Vertical employee
• Company Pension Scheme - 5% and we match it
• Breakfast on us, every day

We may just be the hardest job you've ever had, but we're confident it will be the most rewarding. Join the team today and help us shape the future of Advanced Air Mobility.

Disclaimer Statement

We encourage you to apply even if you may not have all the experience listed in the advert.

We recognise that talent comes in various forms and we are committed to providing opportunities that create an environment of growth, diversity, and inclusion for everyone.

As part of our desire to review and make our processes fair, we may ask you questions related to these aspects during the application process.

For more information on how we will use your data, see our Legal section.

LocationBristol OfficeEmployment TypeFull timeDepartmentPowertrain