Breathe Battery Technologies
Senior Battery Applications Engineer (Modelling)
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Senior Battery Applications Engineer (Modelling)
Senior Battery Applications Engineer / Technical Interface
Are you passionate about fighting climate change? Do you want to work on creating a world where everyone can breathe clean air? Do you want an opportunity to shape a growing company?
Who We Are
At Breathe, we believe an electrified future is key to achieving cleaner air. We’re building battery technology that helps brands reduce emissions and maximise efficiency. Our physics-based battery management software empowers some of the world’s largest automotive and consumer electronics brands to deliver:
- Faster charging
- Longer battery life
- Zero compromise on safety
We make batteries better. And now, we want you to be part of it.
What We’ll Give You
You’ll join a passionate, high-achieving team committed to making a real difference. Here’s what we offer:
- A direct impact – Every day, you’ll contribute to a cleaner energy future by helping brands harness the power of batteries.
- Ownership & growth – You’ll have a big say in the company’s direction as we scale.
- Flexible & supportive culture –
- Hybrid/remote work
- 34 days’ holiday per year (inclusive of bank holidays – we want you to recharge!)
- Dog-friendly office (and we love adding to our pack!)
- Innovation & development – Access to:
- Learning opportunities (courses, conferences, mentorship)
- Collaboration with experts leading the industry
- Ethical pension & share options
- Work-life balance focus –
- Office snacks to keep energy levels high
- Flexibility to accommodate your lifestyle
- Shared purpose – We’re driven by passion, problem-solving, and a shared belief in doing good.
Got questions? Don’t worry—just reach out, and we’ll chat.
What You’ll Do
This role sits at the critical intersection of battery modelling, software expertise, and customer relations. As battery technology becomes increasingly complex, our clients need someone who:
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- Deeply understands our models and software
- Translates technical insights into actionable, evidence-backed guidance
- Builds trust with customers while driving commercial outcomes
Your Day-to-Day Responsibilities
- Primary technical liaison for a portfolio of customers, bridging our modelling/safeguarding teams with client engineering/product teams.
- Deep technical expertise in battery models:
- Explain model outputs, uncertainties, and limitations to sophisticated audiences
- Lead end-to-end customer campaigns, from protocol design to data interpretation
- Present findings in high-quality technical presentations
- Identify and resolve gaps between customer expectations and model capabilities
- Own the technical narrative in:
- Customer reviews
- Milestone meetings
- Discussions with senior OEM/Tier 1 stakeholders
- Collaborate to improve our software:
- Work with embedded and modelling teams to integrate customer insights
- Enhance real-world usability across diverse applications
- Create and maintain customer documentation:
- Technical guides
- Application notes
- Integration manuals (explaining complex models in plain language)
- Optimise workflows for:
- Customer onboarding
- Software calibration
- Performance reporting
- Scale processes to support continued growth.
Key Skills showcased
✅ Battery engineering/expertise in modelling (physics-based, empirical, or data-driven) ✅ Practical experience with Python/MATLAB/Simulink ✅ Communicate advanced technical insights for non-specialist stakeholders ✅ Client-facing experience – Own technical relationships while driving strategic outcomes ✅ Agile multidisciplinary work – Bridge between engineering and business teams.
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Your Background
We’re looking for ** passionate scientists/engineers** with:
- Industry or research experience in:
- Battery engineering
- Electrochemical modelling
- Closely related fields
- Technical depth:
- Strong grasp of battery physics (e.g. degradation mechanisms)
- Ability to critically evaluate model assumptions and outputs
- Software/data skills:
- Hands-on experience with battery models (empirical, physics-based, or ML-informed)
- Knowledge of Python/MATLAB/Simulink is a huge plus
- People skills:
- Clear communication – Explain complex concepts simply to teams and non-specialists
- Experience in technical sales, applications engineering, or customer support
- Moment-to-moment adaptability – Engage with modelling engineers in the morning, then present to customers in the afternoon
- Personality:
- Collaborative & proactive
- Kind and conscientious
We want bold thinkers who are driven by purpose and impact.
Why Join Us?
At Breathe, diversity drives innovation. Our differences allow us to:
- Think from first principles
- Expand our expertise
- Create better products faster
Diversity & Inclusion
We’re committed to attracting, nurturing, and retaining talent across all backgrounds. If you need accommodations to apply, just let us know.
Ready to Join?
Sounding great? We’ll make sure we process your application quickly—we aim to get back to you within two weeks to explore how you can help shape our future.
Come be part of the team changing the energy —and air quality landscape.
Let’s breathe easier—together.
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Jessica, London
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