Process Engineer, Downstream Processing

Visolis

Hayward, United States

Posted on: 2026-07-28

Category: materials

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Employment type:

Full time

Experience required:

Intermediate

Salary

Salary not provided

About the company:

Visolis is a biotechnology and materials company that engineers fuels and chemicals using an integrated biology and chemistry platform. The company produces a proprietary intermediate molecule called MEV, which can be converted into drop-in replacements for petroleum-derived fuels and chemicals, as well as novel high-performance specialty materials. MEV is designed to be non-toxic, biodegradable, and non-flammable, offering a safer and more environmentally responsible alternative to conventional fossil-based molecules. Visolis's mission centers on decarbonizing the global materials and fuels economy by replacing petroleum-derived building blocks with bio-based equivalents that match or exceed the performance of their fossil counterparts. The company's platform is intended to reduce dependence on centralized fossil fuel infrastructure, lower geopolitical supply chain risk, and enable production at distributed facilities worldwide wherever suitable feedstocks are available. What distinguishes Visolis is its hybrid approach combining biological fermentation with chemical catalysis to achieve both molecular precision and industrial-scale throughput. The company has demonstrated commercial traction through partnerships with major industry players, including Zeon Corporation, with whom it co-produced the world's first SIS block co-polymer made from 100% bio-isoprene monomers. Its modular, distributed production model is designed to lower capital and operating costs while integrating seamlessly into existing industrial infrastructure.

VisolisProcess Engineer, Downstream ProcessingHayward, CA%LABEL_POSITION_TYPE_FULL_TIME%%BREADCRUMB_JOB_OPENINGS%Process Engineer, Downstream Processing%BUTTON_APPLY_TO_POSITION%%BUTTON_APPLY_USING_INDEED%%BUTTON_APPLY_USING_LINKED_IN%Job Description

The Process Engineer with our Downstream Processing team will be responsible for providing support activities in the catalysis and process development areas. Specifically, the person in this position will contribute to the development of the production process and catalyst development strategies through the operation of lab-scale reactors to quantitatively characterize catalysts for the production of renewable chemicals. The person will work closely with engineering, molecular biology and analytical teams to increase the yield and productivity of the processes. The scientist will promote a strong health, safety and environment culture on site and within the team.

Primary Responsibilities

Assist in the scale up of Visolis' patented processes to make a range of bio-based chemical products.

Design experiments to test catalysts.

Perform various unit operations and different purification/separation processes.

Run analytical instruments for quantification.

Collect and process samples for products of interest.

Analyze and report data to enable appropriate interpretation and follow up experiments.

Identify and report opportunities for improvement and assist to implement as needed.

Proactively communicate information through appropriate verbal and written means and actively participate in meetings.

Understand and follow department and corporate guidelines, compliance and safety rules and procedures related to duties.

Perform other reasonably related duties not expressly written in this job description as may be assigned from time to time.

Job Qualifications