Scientist I, Protein Purification & Expression
Nurix Therapeutics Brisbane, CA Posted 13 July 2026
PharmaQuality Assurancecroinform
Job description
Position Title: Scientist I, Protein Purification & Expression Nurix Therapeutics is a clinical stage biopharmaceutical company focused on the discovery, development, and commercialization of targeted protein degradation medicines, the next frontier in innovative drug design aimed at improving treatment options for patients with cancer and inflammatory diseases. Powered by a fully AI-integrated discovery engine capable of tackling any protein class, and coupled with unparalleled ligase expertise, Nurix’s dedicated team has built a formidable advantage in translating the science of targeted protein degradation into clinical advancements. Nurix aims to establish degrader-based treatments at the forefront of patient care, writing medicine’s next chapter with a new script to outmatch disease.
Position Nurix Therapeutics, Inc. is seeking a detail-oriented and experienced Protein Expression Scientist to join the DEL and Protein Sciences team. This individual will work cross functionally with internal stakeholders to plan, coordinate, and execute all operational activities required for analytical scale and preparative scale expression of recombinant proteins in baculovirus and mammalian cell systems. Additionally, they will be responsible for documentation of expression conditions and results in internal databases and electronic lab notebook systems.
Responsibilities: Highly proficient in maintaining insect cell and mammalian cell cultures.
Excellent knowledge and high degree of familiarity with all steps in baculovirus expression of recombinant proteins, including clone design, generation and purification of bacmids, raising and titering of baculovirus, conducting MOI studies, cell culture of Sf9 and/or Tni/Hi5 cells, and harvesting of biomass on the scale of 1 L – 20 L.
Highly proficient in maintaining insect cell and mammalian cell cultures.
Strong working knowledge of protein characterization steps, including SDS-PAGE analysis, size exclusion chromatography, and/or thermal stability (e.g. nanoDSF). Requirements Ph.D. or equivalent with 2+ years of relevant experience
This position requires 2+ years of experience working with insect cell lines and baculovirus expression of recombinant proteins. Additional experience working with recombinant protein expression in mammalian cells (e.g. HEK293) is a plus. Industry experience preferred with exemplified ability to overexpress milligram amounts of protein for structural and functional studies for multiple protein classes.
Able to work in dynamic, fast-paced environment with experience prioritizing work across multiple projects.
Detail-oriented with strong record keeping skills.
Past experience purifying recombinant proteins (e.g. affinity chromatography, ion exchange, or size exclusion chromatography) is a bonus.
Must be able to lift 50+ pounds comfortably.
Onsite Position Salary Range: 125K - 151K plus bonus and equity Fit with Nurix Culture and Values Strong team orientation; highly collaborative
Solutions and results-oriented focus
Hands-on approach; resourceful and open to diverse points of view Nurix Therapeutics, Inc. is committed to protecting and respecting your privacy and personal information, including information collected by Nurix when you apply for a job with Nurix or in the course of your employment with Nurix. By applying for a position at Nurix, you agree to our collection and use of personal information as described in our Privacy Policy (https://www.nurixtx.com/privacy-policy/).
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