Unit Cell Engineer, R&D
Invinity Energy Systems Plc
Vancouver, BC, Canada
CAD 110k-125k / year
Posted on Dec 10, 2025
Energy storage is the most exciting area in energy today. Massive amounts of energy storage are required if renewable energy is to take its rightful place on the electric grid. Invinity provides an alternative to the most common type of battery, lithium-ion because the battery technology that works so well in our pockets doesn’t work as well at the grid scale; it wears out, limits use, and even catches fire.
Manufactured as a standardised product in a factory, Invinity’s vanadium flow batteries don’t degrade, won’t catch fire, and can be operated continuously from full charge to full discharge for 25 years. Invinity has 75 megawatt-hours of its modular battery systems in 82 projects across 15 countries - more than any other company in the space. We’ve deployed the largest flow battery systems in the U.S., Canada, Australia, and the UK, and are supported by the UK's National Wealth Fund, some of the world’s leading institutional investors and our projects are backed by major institutions including the U.S. Department of Energy and the UK Government.
A compelling product and recent funding put Invinity in a position to grow dramatically as it addresses the global imperative for stationary energy storage. Join us as we help transform renewable energy into a stable and dependable contributor to the transition to net zero.
Invinity has operations in the UK, Canada and the U.S. and trades publicly in the UK on AIM and AQSE and in the U.S. on OTCQX. For more information about us visit our webpage.
The unit cell engineer will be responsible for the design and development of electrochemical cell components for flow batteries, focusing on optimizing performance, durability, and cost. This involves selecting materials, creating hardware designs, flow frames, seal interfaces and other unit cell components. It also includes developing novel testing and verification procedures to ensure the unit cell meets performance and reliability goals at the pre product development stage The role bridges the gap between fundamental research and the commercialization of new flow battery unit cell technologies.
Key responsibilities
- Develop new unit cell architecture and components, particularly bipolar plate and frame, to improve reliability while reducing cost and complexity.
- Develop novel sealing, manufacturing and assembly processes for components and assemblies, e.g. injection moulding, plastic welding, bonding.
- Select appropriate materials for components based on their electrochemical and mechanical properties, working with materials and chemistry experts.
- Source and verify prototype components, design and build test cells and fixtures, and develop testing methods to evaluate unit cell performance and reliability.
- Conduct electrochemical and post-mortem analysis to identify the root causes of cell failures.
- Support the transfer of de-risked technology to product development teams according to the technology roadmap.
- Use mathematical modeling to understand and improve complex electrochemical and transport phenomena within the cell.
Required skills and knowledge
- At least 3 years demonstrated experience in a similar role
- A strong understanding of electrochemical cell design and operation.
- Knowledge of materials used in energy storage, including polymers, carbon-based materials, and electrolytes.
- Experience in low- and high-volume manufacturing methods such as machining, forming, injection moulding, plastic welding.
- Expertise in designing and specifying physical components such as bipolar plates, seals, frames.
- Familiarity with battery testing, failure analysis, and performance optimization.
- Proficiency in CAD software (Onshape preferred) for creating and refining component designs.
- Project management experience is desirable.
- Eligible to live and work in Canada.
- Registered or eligible to register with EGBC as a PEng or EIT.
At Invinity Energy Systems, we are dedicated to providing equal employment opportunities to all individuals and practicing wage transparency to ensure fairness and equity. The salary for this position ranges from $110,000 to $125,000 per year and will be determined by a combination of the interview process, prior work experience, and educational background.
If you are great at what you do, willing to engage with our collaborative culture, and motivated by making a difference in the world, consider joining us. Invinity Energy Systems is small enough that every team member plays a critical role in our daily business, but large enough to participate in landmark clean energy projects around the world.
At Invinity, we are actively focused on increasing the representation of women across all levels of our organisation, particularly within our engineering, manufacturing and technical teams. We believe that diverse perspectives drive better innovation, and we are committed to providing a working environment where women can thrive, lead, and progress their careers in STEM.
We support this through inclusive hiring practices, equal pay for equal work, flexible working options, leadership development and continuous review of our policies to ensure they meet the needs of all genders and life stages.
Our culture is one of respect, inclusion, and empowerment — where every individual can contribute fully and confidently to a sustainable energy future.
110000 - 125000 CAD a year