About florrent

florrent is a Massachusetts-based, minority-owned deep-tech company innovating to design and build the next generation of high energy density ultracapacitors that will stabilize electrical grids and address critical bottlenecks for the adoption of renewable energies, electric vehicles, and net-zero buildings. Our ultracapacitors are manufactured in Western Massachusetts from abundant and regenerative hemp biomass, grown domestically in the US by Black and Indigenous farmers.

About the Culture

At florrent, we are passionate about bringing the benefits of a decarbonized future to everyone. That passion drives everything we do, and how we do it. We are building a team propelled by ambitious goals, and committed to seeing them come to reality. To reach those goals, we need to stay connected to what motivates us, and always be real about the challenges ahead. 

If that sounds like you, let’s talk! Our careers page is always being updated, but if you find yourself drawn to our mission while none of our current postings are quite the right fit, you can always reach out directly on our Home Page to start a conversation.

About the Job

We are seeking a Senior Materials Scientist to join our small, cross-functional team at florrent. A qualified candidate will have deep expertise in electrode/electrolyte interaction in energy storage technologies to help us design, build, and optimize the next generation of ultracapacitors. They will also have experience in synthesis of energy storage active materials, a strong and actionable understanding of—and proven track record of applying—chemistry fundamentals in their work. In this role, a candidate will apply their diverse knowledge of metrology to quickly iterate and solve the hard problems posed by scaling up a novel energy storage technology in a data-driven methodology.

As Senior Materials Scientist at florrent, you will report directly to florrent’s Chief Engineer, and work to create, verify, and validate the innovative prototypes of florrent’s next-generation ultracapacitors.


Don’t have all of the qualifications listed below? That’s okay, we still want to hear from you if think there’s good alignment between you and florrent!

  • MS or PhD degree in Chemistry, Materials Science, Chemical Engineering, or related fields.

  • Proven track record of success bringing energy storage technologies to market

  • 5+ years of experience in industry laboratories performing and leading research on energy storage technologies

  • Experience creating and testing electrode and electrolyte formulations

  • Hands-on experience with electrochemical testing methods such as galvanostatic charge-discharge, cyclic voltammetry, and EIS

  • Experience in running and interpreting results from physical characterization methods such as SEM, XRD, BET, Raman, FT-IR, etc.

  • Experience running material macro-characterisation for energy storage technologies, such as wind tests and pull tests

  • Experience mapping R&D-level innovation into production-scale roll-to-roll processes

  • Excellent and proactive communication skills

  • Experience developing EDLC electrodes and/or electrolytes

  • Experience with programming languages used for data analysis, such as Python or Matlab

  • Experience working with Electronic Lab Notebooks

  • Experience building and testing coin cells and/or pouch cells

This position has been filled. Would you like to see our other open positions?