ION Exchange Membrane Expert

ION Exchange Membrane Expert

As an ION Exchange Membrane Expert, you will drive the development and optimization of ion exchange and bipolar membranes at the core of our acid-base flow battery technology. Working closely with our Tech Development team and external partners, you will apply advanced characterization methods to improve performance and help scale our solutions from lab to real-world applications.

Join AQUABATTERY today, a pioneering climate tech startup with a mission to commercialise a affordable, safe and sustainable long duration energy storage (LDES) based on saltwater. Our innovative flow battery technology offers an LDES solution without relying on critical or toxic raw materials.

With fresh funding secured and our first commercial product on the horizon, this is an exciting time to become part of our growing team and contribute to building a cleaner, more resilient energy future.

• Lead R&D on ion exchange membranes for flow batteries
• Optimize membrane properties to maximize efficiency
• Develop bipolar membranes to enhance battery performance
• Utilize advanced characterization techniques (e.g., EIS, ion chromatography)
• Collaborate with scientists & engineers to optimize the membrane stack
• Collaborate with academic and industry partners

• PhD in Chemistry (membrane science focus) + 2+ years industry experience
• Expertise in ion transport phenomena & membrane characterization
• Strong problem-solving, analytical, and teamwork skills
• English fluency (Dutch is a plus)

• The opportunity to provide vital support to the energy transition at our state-of-the-art ETCA facility
• A collaborative, multicultural work environment where practical observations and technical insights are valued
• A structured, performance-driven culture that supports professional growth and technical skill development.
• Competitive salary plus Stock Appreciation Rights (SARs)
• Work-life balance, including 25 vacation days and flexible working arrangements
• Green pension scheme (50% employer contribution) and collective health insurance discount
• Company bike for commuting
• Regular team events and opportunities to shape the future of clean energy

AQUABATTERY is a climate-tech start-up, based in the Netherlands. Our vision is to empower the transition to net-zero by providing the world’s most scalable, sustainable and safe long duration energy storage solution. We do so through our revolutionary technology, which enables the storage of electricity in just saltwater. The world will need high volumes of energy storage to enable reliance on renewable energy sources like solar PV and wind energy, even if the sun does not shine or the wind does not blow.

Our technology has been successfully demonstrated through several pilot installations in the Netherlands and in Italy. Our international team reinforces our impact-focused culture every day; taking on challenges and celebrating successes together.