ZipRecruiter

Log In

1

Bioassay Development Jobs in California (NOW HIRING)

BioLegend

Scientist - Bioassay GMP

San Diego, CA

Bioassay GMP scientist will interact with other departments to maintain continuous project flow ... Follow design and development process under current GMP guidelines * Prepare documents required for ...

Revvity

Sr. Scientist, Bioassay

San Diego, CA

$122K - $162K/yr

Job Title Sr. Scientist, Bioassay Location(s) San Diego - BioLegend About Us Revvity is a developer ... Work across functional groups to facilitate new product development * Maintain scientific knowledge ...

Revvity

Sr. Scientist, Bioassay

San Diego, CA · On-site

$122K - $162K/yr

Job Title Sr. Scientist, Bioassay Location(s) San Diego - BioLegend About Us Revvity is a developer ... Work across functional groups to facilitate new product development * Maintain scientific knowledge ...

Revvity

Sr. Scientist, Bioassay

San Diego, CA

$122K - $162K/yr

Job Summary BioLegend is seeking a Bioassay Scientist to join the Molecular and Cellular Biology ... Work across functional groups to facilitate new product development * Maintain scientific knowledge ...

Vir Biotechnology

Director, Bioanalytics

San Francisco, CA · On-site

$203K - $284K/yr

In-depth and strong knowledge of immunoassay and bioassay development and experience with method validation * Large molecule method development expertise and hands-on experience with GLP/GxP is ...

ProFarm

Intern, Chemistry

Davis, CA · On-site

$18 - $20/hr

... bioassay-guided fractionation of crude extracts to isolate and identify active fractions. • Participate in the development of sample preparation method for analysis of active compounds using HPLC ...

Eurofins

Scientist

San Diego, CA · On-site

The Scientist joining our team is responsible for executing and supporting the development, qualification, validation, and transfer of cell-based bioassays in a GMP-regulated laboratory environment.

ProFarm

Intern, Invertebrate Pest Biology

Davis, CA · On-site

$18 - $20/hr

... the development of novel biopesticides to control a wide variety of agricultural pest species. The Intern will assist in preparing materials for bioassays, establishing and maintaining insect ...

Eurofins Scientific

Scientist

San Diego, CA

The Scientist joining our team is responsible for executing and supporting the development, qualification, validation, and transfer of cell-based bioassays in a GMP-regulated laboratory environment.

New

ProFarm

Research Scientist I, Plant Pathologist

Davis, CA · On-site

$85K - $100K/yr

Master's or PhD in Plant Pathology or a related field Experience: * 3+ years of industry R&D experience with plant disease bioassays, including experimental design, data analysis, and presentation of ...

next page

Showing results 1-20

All JobsBioassay Development JobsBioassay Development Jobs in California

Bioassay Development information

What is bioassay development?

Bioassay development is the process of designing, optimizing, and validating biological tests (bioassays) that measure the potency, purity, or biological activity of a substance, such as a drug, vaccine, or biologic. These assays are crucial in pharmaceutical and biotechnology industries for quality control, regulatory approval, and research. The process involves selecting the appropriate biological system, establishing assay conditions, and ensuring reproducibility and accuracy of results.

What are some typical challenges faced during bioassay development, and how are they addressed within a team setting?

A common challenge in bioassay development is ensuring assay reproducibility and robustness across different batches and operators. Teams often address this by conducting thorough validation studies, standardizing protocols, and encouraging open communication to troubleshoot issues quickly. Collaboration between scientists, statisticians, and quality control personnel is essential to optimize assay conditions and interpret data accurately. Regular team meetings and documentation help keep everyone aligned and maintain high assay performance standards.

What are the key skills and qualifications needed to thrive as a bioassay development scientist, and why are they important?

To thrive as a Bioassay Development Scientist, you need a strong background in molecular biology, biochemistry, and analytical techniques, typically supported by a degree in life sciences or a related field. Familiarity with laboratory automation, data analysis software (such as GraphPad Prism or SoftMax Pro), and regulatory guidelines like GLP/GMP is essential. Attention to detail, critical thinking, and strong collaboration skills help you design robust assays and solve complex problems effectively. These competencies are vital for generating reliable data, ensuring compliance, and advancing drug discovery or quality control processes.
What are popular job titles related to Bioassay Development jobs in California? For Bioassay Development jobs in California, the most frequently searched job titles are:
What job categories do people searching Bioassay Development jobs in California look for? The top searched job categories for Bioassay Development jobs in California are:
Bioassay Development jobs near you
Infographic showing various Bioassay Development job openings in California as of July 2026, with employment types broken down into 1% As Needed, 78% Full Time, 17% Part Time, 1% Temporary, and 3% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution.

Director, Bioassay Development

Denali Therapeutics

South San Francisco, CA • On-site

Full-time

Medical, Retirement

Posted 7 days ago

Job description

Neurodegenerative diseases are one of the largest medical challenges of our time. Denali Therapeutics is a biotechnology company dedicated to developing breakthrough therapies for neurodegenerative diseases through our deep commitment to degeneration biology and principles of translational medicine. Denali is founded on the collaboration of leading scientists, industry experts, and investors who share the vision that scientific discovery energetically applied to translational medicine is the key to delivering effective therapies to patients.
We invite you to consider an opportunity with Denali to help achieve our goal of delivering meaningful therapeutics to patients.
We are seeking a Director, Bioassay Development to lead the Bioassay Development function within the Technical Operations Analytical & Formulation Development organization. This leader will provide strategic leadership to a team responsible for potency assay development and plate-based impurity assay development for complex protein biologics across a pipeline spanning early clinical development through commercial lifecycle management. The Director will be expected to balance commercial-ready assay rigor with phase-appropriate development for emerging programs, while building platform capabilities that can be leveraged across related protein biologic modalities. In addition, the individual will be expected to have program-specific responsibilities driving assay development and potency strategy for one or more programs.
The role requires deep technical expertise in biologics potency methods, ligand-binding and cell-based assay platforms, method qualification and validation, assay transfer, regulatory filings, and GMP readiness. The Director will mentor a team, build functional capability, influence CMC strategy, and deliver bioassay methods that support the development and commercialization of innovative protein biologics for serious diseases.
This highly visible leadership role is expected to partner closely with Process Development, Quality Control, Quality Assurance, Regulatory CMC, Pharmaceutical Development, Translational Sciences, Program Teams, and external CRO/CDMO partners to ensure that bioassay strategies support clinical development, regulatory submissions, commercial readiness, and product lifecycle management.
Key Accountabilities / Core Responsibilities
  • Lead the Bioassay Development sub-function within CMC Analytical Development, providing scientific, technical, and people leadership for potency methods and plate-based impurity assays supporting protein biologics across the development lifecycle.
  • Develop and implement phase-appropriate bioassay strategies for programs spanning early development, clinical-stage advancement, late-stage readiness, and commercial lifecycle support, ensuring methods are fit for purpose at each stage.
  • Drive development of robust, mechanism-of-action-based potency and plate-based impurity methods for complex biologics, including enzymatic activity, receptor binding, cellular uptake, signaling, functional cell-based assays, reporter assays, and other relevant biological readouts.
  • Lead program-specific potency assay strategy and development, including assay design, development, optimization, qualification, validation, transfer, and lifecycle management in alignment with product mechanism of action, critical quality attributes, and regulatory expectations.
  • Mentor, develop, and grow a high-performing team of scientists, providing technical guidance, career development, prioritization, feedback, and coaching. Includes leading direct report(s) through annual goal setting, growth planning, adherence to company policies, maintain training compliance and provide ongoing feedback on growth, development and areas of improvement.
  • Build a culture of scientific excellence, collaboration, accountability, and pragmatic problem solving, ensuring the team applies rigorous experimental design, sound data interpretation, strong documentation practices, and phase-appropriate decision-making.
  • Partner cross-functionally with Process Development, QC, QA, Regulatory CMC, Translational Sciences, Program Leadership, and external partners to ensure bioassay strategies support process understanding, control strategy, comparability, release, stability, and regulatory submissions.
  • Establish and maintain assay control strategies, including reference standards, critical reagents, system suitability criteria, assay acceptance criteria, statistical models, trending approaches, and lifecycle monitoring.
  • Provide technical leadership for assay troubleshooting, method transfer, regulatory support, and external laboratory oversight, ensuring bioassay methods are robust, reproducible, compliant, and capable of supporting key CMC and program milestones.

Qualifications/Skills:
  • Typically requires a Ph.D. in biochemistry, molecular biology, cell biology, or a related discipline with 10+ years of directly relevant biotechnology or pharmaceutical industry, including 8+ years in a people leadership role (or M.S. with 14+ years of relevant experience).
  • Deep technical expertise in bioassay development for protein biologics, including ligand-binding and cell-based potency methods and plate-based impurity assay formats.
  • Hands-on experience developing potency assays for complex biologics such as recombinant proteins, enzymes, Fc-fusion proteins, monoclonal antibodies, bispecifics, receptor-targeted biologics, or other engineered protein therapeutics.
  • Strong knowledge of assay statistics, design of experiments, reference standard strategy, assay trending, and troubleshooting of complex biological assays.
  • Demonstrated experience with plate-based impurity assays, host cell protein ELISA, residual DNA, residual affinity ligands, process residuals, or product/process-specific impurities.
  • Strong understanding of CMC development for biologics, including analytical control strategy, critical quality attributes, reference standards, method qualification, validation, transfer, comparability, stability, and specification setting.
  • Experience supporting biologics programs across multiple development stages, ideally including early clinical development, late-stage development, regulatory filing, commercial launch, or post-approval lifecycle management.
  • Prior experience managing experienced scientists and leading a functional or sub-functional team within Analytical Development, CMC, Technical Operations, or Quality Control.
  • Strong working knowledge of GMP expectations and regulatory requirements for biologics analytical methods.
  • Experience authoring or reviewing regulatory submission content and responding to regulatory questions related to analytical methods.
  • Demonstrated ability to lead through ambiguity, prioritize across multiple programs, and make phase-appropriate technical decisions in a fast-moving biotech environment.

Salary Range: $208,000.00 to $271,000.00 . Compensation for the role will depend on a number of factors, including a candidate's qualifications, skills, competencies, and experience. Denali offers a competitive total rewards package, which includes a 401k, healthcare coverage, ESPP and a broad range of other benefits. Learn more at https://www.denalitherapeutics.com/careers
This compensation and benefits information is based on Denali's good faith estimate as of the date of publication and may be modified in the future.
Denali is committed to its core company value of unity by creating a diverse and inclusive environment. We are proud to be an equal opportunity employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, gender identity and/or expression, status as a veteran, basis of disability, or any other federal, state, or local protected class.

Apply