ION Exchange Membrane Expert

Summary

Join AQUABATTERY, a pioneering climate-tech startup with a mission to commercialise an affordable, safe and sustainable long duration energy storage solution based on saltwater. With fresh funding secured and a first commercial product on the horizon, this is an exciting time to become part of the growing team and contribute to building a cleaner, more resilient energy future.

In this role, you will drive the development and optimization of ion exchange and bipolar membranes at the core of AQUABATTERY’s acid-base flow battery technology. Working closely with the Tech Development team and external partners, you will apply advanced characterization methods to improve performance and help scale solutions from lab to real-world applications.

What you’ll be doing

• 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

Function requirements

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

Why AQUABATTERY?

• The opportunity to provide vital support to the energy transition at the 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. Its vision is to empower the transition to net-zero by providing a scalable, sustainable and safe long duration energy storage solution through technology that enables the storage of electricity in saltwater. The international team reinforces an impact-focused culture every day, taking on challenges and celebrating successes together.