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Facility:  1359
Description: 

Who we are…

Agratas is a wholly owned subsidiary of Tata Sons. We design, develop and manufacture high-quality, high-performance, sustainable batteries for the mobility and energy sectors.

We are a scale-up business with a start-up mentality and the backing of a well-established parent company. The UK business headquarters is in the Midlands and we are currently building a battery manufacturing facility in Somerset and looking to compliment, scale and grow our R&D facilities in Abingdon and Coventry with the brightest minds from within the battery and EV sector.

Our battery technology roadmap is based on a foundation of world-class solutions for multiple applications. Collaborating with our technical partners, we are industrialising best-in-class high energy density and long-lasting battery cells. We are also committed to developing the next generation of battery technologies.

Purpose of the Role

The Senior 3D Thermal Simulation Engineer is a crucial role in the Virtual Engineering Team. This role requires a high level of analytical and critical thinking. 

This role is required to support engineering activities within the scope of a defined project, support team and company initiatives and goals, support planning of timelines, and support the delivery of engineering milestones. The 3D Thermal Simulation Engineer will have a direct impact on the company’s ability to design, develop, and deliver safe, reliable, and high-performance battery systems to customers.

This is a hybrid working role that will be based in our Coventry office. This is an exciting opportunity to shape the future of sustainable energy solutions in a fast-paced, innovative environment.

Job Responsibilities

  • Lead virtual engineering for high-voltage battery pack design across EVs, commercial vehicles, and ESS applications.

  • Drive thermal simulations using 3D CFD and electro-thermal tools to assess heat generation, cooling, and temperature distribution.

  • Define thermal requirements and translate them into effective simulation strategies.

  • Optimize thermal systems (air, liquid, phase-change cooling) for performance and safety.

  • Conduct transient and worst-case thermal analysis, including thermal runaway scenarios.

  • Develop and validate thermal models using physical test data.

  • Automate workflows and manage large datasets using scripting (e.g. Python).

  • Collaborate with cross-functional teams (design, BMS, manufacturing) to deliver robust, manufacturable solutions.

  • Ensure compliance with safety, durability, and reliability targets.

  • Engage with tool vendors and support technical troubleshooting.

  • Mentor team members and support technical problem-solving.

Qualifications and Experience

  • Proven experience in 3D thermo-electric simulations

  • Degree in Mechanical, Thermal, or Aerospace Engineering

  • Strong background in Li-ion battery systems and thermal management

  • Proficient in CFD tools: Star-CCM+, Ansys Fluent

  • Solid knowledge of conjugate heat transfer, TIMs, insulation, and cooling components

  • Familiar with Li-ion thermal behavior, degradation, and integration beyond EV/ESS

  • Skilled in simulation-led development and delivering design recommendations

  • Experienced in correlating simulations with test data to improve model accuracy

  • In-depth understanding of cell-level thermo-electric modelling

What you’ll get…

As a new company, our reward scheme is constantly evolving. We continue to review the market to deliver a competitive benefits package, which currently includes private healthcare, company bonus, enhanced parental leave policy and a cash allowance to boost your benefits. We are a flexible business that is committed to promoting work-life balance, partnering with Yulife to provide our team members with total wellbeing support.

You’ll work in a rapidly scaling-up environment as a subsidiary of the multinational corporation, Tata Sons, to help build the UK’s biggest battery manufacturing facility and make your mark in a new organisation.

Agratas is a place to be authentically you.At Agratas we strongly believe that people are at their best when they feel supported and happy in their workplace. To that end we continue to cultivate a diverse workforce which protects the individuality of each team member. We therefore warmly welcome applicants from any race, gender, sexuality, and ability. Should you have a preference in how your suitability is assessed for this role or require any reasonable adjustments please let the Talent Acquisition team know.

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