Bioprocess Engineer I

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

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Equity opportunity

401K with company match

Flexible PTO + holidays

Meal credits

Snacks in-office

Job summary

Rubi Laboratories, Inc. is seeking a Bioprocess Engineer I to join our Alameda, CA headquarters.

You will collaborate with engineers and scientists to execute experiments and support day-to-day operations, helping advance our carbon-negative materials and scale production for global brands. The role offers hands-on bioprocessing experience in a fast-paced startup, with opportunities to contribute to enzyme platform development and process optimization.

Qualifications

• 2+ years of industry experience in bioprocess/biocatalysis
• Bioreactor or biocatalysis process operation (setup, cleaning, running)
• Filtration (TFF/depth/membrane) with proteins
• Protein handling and purification fundamentals
• Comfort with process-heavy, hands-on engineering work

Responsibilities

• Execute hands-on experiments in the lab
• Set up, clean and operate bioreactors
• Perform homogenization (cell disruption)
• Conduct Western blots and routine protein/enzyme analytics
• Assist process scale-up to thousands of liters (1,000L+)

Skills

Bioprocess engineering

Hands-on lab work

Process troubleshooting

Team collaboration

Education

Bachelor’s degree in Chemical/Bioprocess Engineering

Tools

Bioreactors

Filtration (TFF/depth/membrane)

Protein handling & purification

Job description

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
• 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 or biocatalysis process 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.

• 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%
• Flexible Paid Time Off (PTO) plus 16 Paid Company Holidays, including company-wide Winter break (1 week)
• Daily $12 meal credit through Forkable meal delivery M-F
• Free snacks in-office
• A mission-driven environment solving one of the world's most pressing sustainability challenges through cutting-edge biotechnology
• 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 all different backgrounds so if you think you have the experience, Rubi Laboratories is dedicated to establishing a diverse employee base.

This position is in our Alameda, CA headquarters and requires on-site presence to complete the required work described. Rubi Laboratories cannot offer relocation assistance for this position.

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

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