Location: Paris

Eligibility: Must be based in France or able to relocate to France ASAP

Contract: Full-time

Salary: €40k–€65k + ESOP (depending on experience)

Language: English required, French a plus (not mandatory)

About Bloomineral

Bloomineral is building a carbon-negative materials platform based on a biomineralization process.

We take CO₂, industrial waste, and seawater and transform it into solid mineral forms that can be used in industrial materials, replacing emissions-intensive inputs with carbon-storing alternatives.

We’re an early-stage team working based primarily at LSCE in Paris-Saclay. Our current focus is simple: make the science work in real systems, and make it scale.

What you’ll do

Take our process out the lab and scale it.

This is a hands-on engineering role focused on building and scaling a real system.

You will take a working lab process and turn it into a functioning pilot (containerized), then improve it until it is stable, repeatable, and scalable.

This is not a strategy-only role. You will be expected to work directly on the system. You’ll lead the industrialization of Bloomineral’s biomineralization process, translating validated science into pilot and pre-industrial systems. You’ll work across different sciences, engineering, and external partnerships to make sure the system performs in real conditions.

Responsibilities

• Define and execute the industrialization roadmap from pilot to industrial scale
• Design and validate pilot systems and equipment (process flows, reactors, instrumentation, automation)
• Own process performance: robustness, scalability, cost, and reliability
• Lead scale-up, optimization, and technical risk mitigation
• Structure technology transfer to partners or internal production
• Build and lead the industrialization / process engineering function

Profile

• Strong background (PhD or equivalent experience) in chemical, bioprocess, environmental engineering, or similar