Bioprocess Engineer I

Rubi Laboratories, Inc.; Alameda (CA); On-site; USD 85,000 - 105,000; Full time

Benefits offered by this job

Medical, Dental, and Vision insurance

401K with company match

Generous equity

Flexible Paid Time Off

Job summary

Rubi Laboratories in Alameda, CA is seeking a Bioprocess Engineer I to collaborate with engineers and scientists, executing experiments and supporting daily operations. You will contribute to advancing our carbon-negative materials by advancing our enzyme cascade platform in a fast-paced startup environment.

The role offers hands-on bioprocess work, scale-up preparation, and collaboration across disciplines to drive scalable, sustainable manufacturing for leading brands.

Qualifications

• Bachelor's in Chemical Engineering or Bioprocess Engineering or related field.
• 2+ years of industry experience.
• Bioreactor operation (setup, cleaning, running).
• Filtration (TFF/depth/membrane) for proteins.
• Protein handling and purification fundamentals.
• Comfort with process-heavy, hands-on engineering work.

Responsibilities

• Hands-on experiment execution in the lab.
• Cleaning, setup, and operation of bioreactors.
• Enzyme downstream processing/filtration.
• Homogenization (cell disruption).
• Western blots and routine protein/enzyme analytics.
• Supporting process scale-up to thousands of liters (1,000L+).

Skills

Hands-on lab experience

Process development

Protein handling

Education

Bachelor's in Chemical Engineering/Bioprocess Engineering

Tools

Bioreactor operation

Filtration (TFF/depth/membrane)

Job description

Bioprocess Engineer I

Rubi is pioneering the next era of manufacturing with its proprietary enzyme cascade technology. Our cell-free biocatalysis platform converts waste carbon into high-value materials – including cellulose textiles, chemicals, and polymer ingredients – requiring a fraction of the energy use and capital investment of traditional manufacturing systems.

Our modular production systems are designed to be deployed anywhere, enabling us to establish resilient and decarbonized supply chains at projected cost parity with existing products. We've established partnerships with global manufacturers and retailers including Walmart, H&M, and Patagonia, and have been honored as World Economic Forum Technology Pioneers, MIT Tech Review 35 Innovators Under 35, European Patent Office Young Inventors Prize winners, and H&M Global Change Award winners.

As Rubi Laboratories continues to grow, we are expanding our team to support the full range of scientific expertise behind our technology. We are seeking a Bioprocess Engineer I to collaborate closely with our engineers and scientists in executing experiments and supporting day‑to‑day operations. In this role, you will directly contribute to advancing our product and scaling the availability of our carbon‑negative materials for leading global brands. This is an opportunity to build hands‑on experience in a fast‑paced startup environment while applying your expertise to develop solutions that drive meaningful environmental impact.

Responsibilities

• Hands‑on experiment execution in the lab
• Cleaning, setup, and operation of bioreactors
• Enzyme downstream processing/filtration
• Homogenization (cell disruption)
• Western blots and routine protein/enzyme analytics
• Supporting process scale‑up to thousands of liters (1,000L+)

Requirements/Qualifications

• Bachelors in Chemical Engineering, Bioprocess Engineering, or related field
• 2+ years of industry experience
• Bioreactor operation (setup, cleaning, running)
• Filtration (TFF/depth/membrane filtration, ideally with proteins)
• Protein handling and purification fundamentals
• Comfort with process-heavy, hands‑on engineering work

Rubi Laboratories is dedicated to providing a supportive work environment for all our employees. We provide a competitive salary, generous equity, and benefits in a rapidly growing venture‑backed company with all the exciting career and growth opportunities that come with it.

Compensation

$85,000 - $105,000 annually; actual compensation may vary based on skills, experience, and geographic location.

Benefits

• Medical, Dental, and Vision insurance (100% coverage of monthly fees of base plan for our employees and their dependents)
• 401K with up to 2% company match at 100%
• Generous equity
• Flexible Paid Time Off (PTO)plus16Paid Company Holidays, including company-wide Winter break (1 week)
• Daily $12 meal credit throughForkablemeal delivery M-F
• Free snacks in-office
• A mission-driven environment solving one of the world's most pressing sustainability challenges throughcutting-edgebiotechnology
• Hands‑on experience with engineered enzyme platforms alongside a world-class interdisciplinary team
• Direct impact on breakthrough materials used by global brands, with the opportunity to help scale technology from lab to market

We are excited to explore applicants with alldifferent backgroundsso if you think you have the experience, Rubi Laboratories is dedicated toestablishinga diverse employee base.

This position is in our Alameda, CA headquarters and requireson-site presence to complete the required work described. Rubi Laboratories cannot offer relocationassistancefor this position.

Legal authorization to work in the U.S. isrequired. Rubi Labs cannot offer employment visa sponsorship at this time.

In compliance with federal law, all persons hired will berequiredto verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.