About PHNX Materials:
PHNX Materials refines coal ash waste into a sulfate-based fertilizer, and a cement substitute (SCM). Our cost-effective, scalable technology delivers a triple win: providing a low cost fertilizer, helping power producers manage coal ash liabilities, and providing concrete companies a cheaper, greener alternative to cement. Founded by Stanford and Tesla alumni, PHNX is on a mission to unlock this abundant domestic natural resource.

Position overview:
This is a cross-cutting role for someone with real-world experience in sulfate-based fertilizers and inorganic salts who can help shape how PHNX approaches product definition, market selection, and industrial development.

You will work closely with the founding team to bring clarity across questions of market demand, quality requirements, customer expectations, and practical considerations for producing and selling a sulfate-based product at scale. The scope of the role is intentionally flexible and can be tailored to the right person’s background.

Key Responsibilities:

• Advise on market dynamics across agricultural, industrial, and specialty fertilizer applications

• Define target product specifications, including purity, contaminants and handling characteristics

• Guide decisions on which end markets are most attractive and achievable given PHNX’s process

• Provide insight into customer qualification, offtake structures, and distribution considerations

• Advise on industrial-scale considerations such as crystallization, drying, storage, and logistics

• Help evaluate tradeoffs between purity, yield, cost, and market value

• Serve as a technical and commercial thought partner as PHNX transitions from pilot to commercial production
  

Qualifications:

We are intentionally open on background. You may come from:

• Fertilizer manufacturing or nitrogen-based products

• Industrial production of sulfate salts or inorganic chemicals

• Agricultural inputs, distribution, or product management

• Process engineering or industrial scale-up of bulk chemical products

You likely have:

• Deep familiarity with fertilizer quality requirements and real customer expectations

• Practical understanding of how sulfate-based products are produced, handled, and sold at scale

• Experience bridging technical constraints with commercial realities

• Comfort operating in ambiguous, early-stage environments

What We Offer:

• Opportunity to shape a critical product pathway at an early-stage industrial company

• Direct access to the founding team and influence over technical and commercial direction

• Flexible structure based on fit, ranging from advisory to hands-on involvement

• Real impact on how a waste-derived product competes in established markets

If you have deep experience with sulfate-based fertilizer products and want to help build something new at industrial scale, we would love to speak.

PHNX Materials is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, disability, protected Veteran status, age, or any other characteristic protected by applicable law.