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Protein Expression Purification Jobs in California

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Protein Expression Purification information

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$17

$32

$50

How much do protein expression purification jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for protein expression purification in California is $32.63, according to ZipRecruiter salary data. Most workers in this role earn between $21.35 and $40.34 per hour, depending on experience, location, and employer.

What is the difference between Protein Expression Purification vs Protein Biochemist?

AspectProtein Expression PurificationProtein Biochemist
Primary FocusIsolating and purifying proteins for research or productionStudying protein structure, function, and interactions
Required SkillsMolecular cloning, chromatography, cell cultureProtein analysis, assays, structural techniques
Work EnvironmentLaboratories, biotech or pharma companiesResearch labs, academic institutions
Common CertificationsBiotech certifications, molecular biology trainingBiochemistry degrees, research experience

While both roles involve working with proteins, Protein Expression Purification focuses on isolating and purifying proteins, often for production or experimental use. Protein Biochemists analyze protein functions and structures, often using purified proteins. Both roles require molecular biology skills and lab experience but serve different purposes within the research and biotech industries.

What are some common challenges faced in a protein expression purification role and how can they be addressed?

Professionals in Protein Expression Purification often encounter challenges such as low protein yield, protein aggregation, and difficulties in achieving the desired purity. These issues can be addressed by optimizing expression conditions (such as temperature and induction time), testing different host systems, and employing various purification techniques like affinity chromatography or size-exclusion chromatography. Collaborating closely with other team members, such as molecular biologists and analytical chemists, is essential to troubleshoot problems and refine protocols. Staying up-to-date with the latest methodologies and maintaining meticulous records also help ensure successful outcomes.

What is protein expression and purification?

Protein expression and purification refers to the process of producing a specific protein in a host organism, such as bacteria, yeast, or mammalian cells, and then isolating that protein from the host cells or culture medium. This process is fundamental in research and biotechnology for studying protein function, structure, and interactions, as well as for manufacturing proteins for therapeutic or industrial use. The workflow typically involves cloning the gene of interest, expressing it in a suitable system, and using various biochemical techniques to purify the target protein to a high degree of purity.

What are the key skills and qualifications needed to thrive as a protein expression purification scientist, and why are they important?

To thrive as a Protein Expression Purification Scientist, you need a solid background in biochemistry or molecular biology, with hands-on experience in recombinant protein expression and purification techniques. Familiarity with tools such as FPLC/HPLC systems, affinity chromatography, and spectrophotometric analysis, along with knowledge of relevant laboratory safety protocols, is typically required. Strong problem-solving abilities, attention to detail, and effective communication skills are essential soft skills for this role. These competencies ensure the efficient production of high-quality proteins for research or therapeutic applications, supporting critical advancements in biotechnology.
What are popular job titles related to Protein Expression Purification jobs in California? For Protein Expression Purification jobs in California, the most frequently searched job titles are:
What job categories do people searching Protein Expression Purification jobs in California look for? The top searched job categories for Protein Expression Purification jobs in California are:
What cities in California are hiring for Protein Expression Purification jobs? Cities in California with the most Protein Expression Purification job openings:
Protein Expression Purification jobs near you
Infographic showing various Protein Expression Purification job openings in California as of August 2026, with employment types broken down into 79% Full Time, 7% Part Time, and 14% Contract. Highlights an 100% In-person job distribution, with an average salary of $67,865 per year, or $32.6 per hour.

Protein Expression Scientist - Temp

System One

Alameda, CA • On-site

$50 - $55/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 23 days ago

Job description

Job Title: Protein Expression & Purification Scientist Location: Alameda, CA Type: 12 month contract Compensation: $50-55/hour depending on qualifications Contractor Work Model: Onsite Hours: 40 hours/week

Overview

We are seeking a Protein Expression & Purification Scientist to support drug discovery programs through the design, expression, purification, and characterization of recombinant proteins. This hands-on laboratory role requires expertise in molecular biology, protein expression systems, and chromatographic purification methods, with opportunities to contribute across multiple research initiatives in a fast-paced discovery environment.

Responsibilities

  • Design, clone, and optimize expression constructs using molecular biology techniques, including PCR, primer design, sequence verification, and recombinant cloning strategies.
  • Execute recombinant protein expression workflows using baculovirus expression vector systems (BEVS) in insect cells and E. coli expression platforms.
  • Generate, amplify, and optimize baculovirus stocks to support protein production objectives.
  • Perform high-throughput small-scale expression screening to evaluate constructs, expression conditions, and protein yield.
  • Purify recombinant proteins using affinity, ion exchange, and size-exclusion chromatography techniques.
  • Optimize expression, culture, and purification parameters to improve protein yield, purity, and overall quality.
  • Conduct analytical characterization using SDS-PAGE, Western blotting, SEC, and related protein analysis methods.
  • Document experimental procedures, results, and observations in accordance with laboratory documentation standards.
  • Analyze data, troubleshoot technical challenges, and recommend improvements to workflows and experimental strategies.
  • Communicate scientific findings and project updates effectively with cross-functional team members.

Requirements

Required Qualifications

  • Bachelor's degree in Biochemistry, Molecular Biology, Structural Biology, or a related scientific discipline with 3+ years of relevant industry experience; or Master's degree with 1+ year of relevant industry experience.
  • Strong expertise in molecular biology techniques, including cloning, vector design, construct optimization, and sequence verification.
  • Experience with PCR, primer design, restriction enzyme-based cloning, and recombination-based cloning methods.
  • Demonstrated experience expressing recombinant proteins in BEVS/insect cell systems and E. coli expression systems.
  • Experience with high-throughput small-scale protein expression screening.
  • Proficiency in protein purification using chromatographic techniques, including affinity, ion exchange, and size-exclusion chromatography.
  • Experience performing protein analytical characterization using SDS-PAGE, Western blotting, SEC, and related techniques.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Ability to independently manage experiments while collaborating effectively within multidisciplinary teams.
  • Strong organizational, documentation, and scientific communication skills.

Preferred Qualifications

  • Experience with biophysical characterization techniques such as LC-MS, SPR, MST, SEC-MALS, nanoDSF, or mass photometry.
  • Experience with protein purification method development and process optimization.
  • Familiarity with electronic laboratory notebooks, including Benchling.
  • Experience supporting protein production activities within a drug discovery or biopharmaceutical research environment.

Benefits

System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

Ref: #568-Clinical