Job Summary

We’re seeking an experienced Crystallization Scientist to separate and purify our products to commercial standards. You will be responsible for developing purification methods and processes, particularly pertaining to crystallization. You will work closely with the R&D team and the CTO. The successful candidate has 5+ years of experience in crystallization separation techniques at bench scale and pilot scale.

This is a full-time position in Menlo Park, CA, with a competitive salary and stock options.

A Day in the Job

  • Design and optimize methods and processes for the separation of a mixture of crystalline chemicals into individual components

  • Plan and conduct experiments and feasibility studies

  • Develop and perform analyses to support the separation method development

  • Improve experimental workflow to increase efficiency

  • Troubleshoot and develop innovative solutions to reduce overall cost of the process

  • Research, calculate, and model scaling implications of the method in development

  • Work with the R&D team to improve product purity in the upstream reaction process

  • Bring the bench scale purification process into pilot scale

  • Communicate with third-party engineering partners and crystallization equipment manufacturers


  • 5+ years of experience in crystallization separation techniques at bench scale and pilot scale

  • 5+ years of experience in relevant analytical techniques (GCMS, HPLC, DSC, XRPD, etc.) to support the method development

  • A bachelor’s degree or equivalent in chemistry or chemical engineering

  • Experience removing impurities from crude chemical mixtures

  • Experience separating chemical mixtures into individual compounds

  • Experience reaching >99% purity for crystalline chemicals

  • Experience documenting relevant method details and data in an organized fashion

  • Excellent problem-solving and analytical skills

  • Excellent written and verbal communication skills, especially for technical information

Bonus Points

  • Worked at a purification process development firm

  • Worked as a crystallization scientist or engineer

  • An innate ability to recognize priorities and execute autonomously

  • A knack for doing more with less

You’ll Want to Work with Us Because

We’re at the cutting edge of plastic recycling innovation and you’ll be on a mission to turn the plastic pollution crisis into an even bigger business opportunity. You’re coming in at a time of growth, and together, we have the opportunity to stretch for amazingness!

We take care of you! We offer a competitive compensation package, health benefits, 401k, and stock options. Our company dynamic is egalitarian and friendly, and everyone’s ideas are translated into real-world impact.

If you’re excited about this opportunity, please send your CV to