1D Simulation Engineer

An exciting opportunity has arisen for a 1D Simulation Engineer to join a high-performance automotive engineering environment, supporting the development and optimisation of advanced powertrain systems.

This role sits within a multi-disciplinary simulation team, focusing on the development and application of 1D modelling techniques to solve complex fluid flow, thermal, and system-level challenges. The successful candidate will contribute to improving overall power unit efficiency, performance, and reliability through robust simulation, correlation, and development loops.

The position requires a strong analytical mindset, a deep understanding of thermofluid systems, and the ability to work collaboratively across simulation, design, and test teams in a fast-paced, data-driven environment.

• Develop, maintain, and apply 1D simulation models for powertrain and thermofluid systems, including intake, exhaust, cooling, lubrication, and energy recovery systems.
• Work closely with CFD and cross-functional engineering teams to optimise fluid flow and thermal performance across the power unit.
• Support concept design and system architecture decisions through simulation-driven insights.
• Perform model validation and correlation using test bench and real-world data, ensuring accuracy and predictive capability.
• Develop and enhance bespoke and commercial simulation tools, improving modelling fidelity and efficiency.
• Analyse large datasets, interpret simulation and test results, and provide clear technical recommendations.
• Contribute to development loops, linking simulation, test, and design iterations to drive continuous performance improvements.
• Support engine and powertrain testing activities, including collaboration with test engineers to validate simulation outputs.
• Document methodologies, assumptions, and results, ensuring traceability and knowledge sharing across teams.
• Communicate findings effectively to both technical and non-technical stakeholders.

• Degree in Mechanical Engineering, Automotive Engineering, Aerospace Engineering, or a related discipline.
• Postgraduate qualification (MSc or PhD) in a relevant field is advantageous.
• Strong academic foundation in thermodynamics, fluid mechanics, and heat transfer.

• Strong expertise in 1D simulation tools (e.g. GT-SUITE, AMESim, Ricardo WAVE, or similar).
• Solid understanding of internal combustion engines, hybrid powertrains, or high-performance propulsion systems.
• Knowledge of fluid dynamics and thermal systems modelling.
• Experience in model development, calibration, and validation.
• Ability to interpret complex data sets and translate findings into actionable engineering insights.
• Strong problem-solving capability, particularly when working with incomplete or imperfect data.
• Excellent written and verbal communication skills for reporting technical findings.
• Ability to work effectively within cross-functional engineering teams.

• Experience working alongside CFD teams and integrating multi-fidelity simulation approaches.
• Knowledge of electrified powertrain systems, including energy recovery and battery thermal management.
• Experience developing custom scripts or automation tools (e.g. Python, MATLAB).
• Familiarity with data analysis and visualisation tools.
• Experience working in fast-paced, high-performance engineering environments with tight development timelines.
• Demonstrated ability to influence technical direction and mentor junior engineers.

• Experience working on high-performance powertrain development, motorsport, or advanced R&D programmes.
• Exposure to simulation-driven development environments, including correlation with test data.
• Experience in engine test-bench environments and understanding of test methodologies.
• Familiarity with manufacturing considerations and their impact on simulation models.
• Experience contributing to iterative development loops between simulation, design, and validation.
• Prior involvement in hybrid power unit development or motorsport applications is highly advantageous.

• Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges 
• We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects 
• Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses 
• Competitive company benefits
• Always working as one team, our people are not afraid to think big and challenge the status quo

• As a Disability Confident Committed Employer we have committed to:
• Ensure our recruitment process is inclusive and accessible
• Communicating and promoting vacancies
• Offering an interview to disabled people who meet the minimum criteria for the job
• Anticipating and providing reasonable adjustments as required
• Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people

“We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age”. 

We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive