Demo

Associate Scientist-Sr. Associate Scientist, Cell Based Assays

Prellis Biologics
Berkeley, CA Full Time
POSTED ON 4/3/2026
AVAILABLE BEFORE 5/2/2026
Prellis Biologics uses proprietary technology to 3D print lymph node organoids, which we are using to generate in vitro antibody libraries andinvitrohumanlymphnodecoculturesfor generating antigen-specific B-cells.We are seeking a highly motivated Associate Scientist – Senior Associate Scientist, Cell-Based Assays, to join our Antibody Screening team. The successful candidate will support and advance antibody discovery programs through development and execution of robust cell-based binding and functional assays.This role will play a key part in establishing, optimizing, and operationalizing diverse assay formats to enable screening of large antibody panels against a diverse class of targets.The successful candidate will contribute across the full workflow, from cell line generation and assay development to high-throughput screening and data analysis, and will work closely with cross-functional discovery teams.

Key Responsibilities

  • Design, develop, optimize, and execute on-cell binding assays (e.g., flow cytometry, imaging-based, receptor internalization, competition formats) to evaluate antibody binding to native target conformations.
  • Establish and run functional assays relevant to mechanism of action, including but not limited to: receptor signaling, internalization assays, blocking/competition assays, reporter-based pathway activation assays.
  • Adapt assays for medium to high-throughput screening of large antibody panels, including primary screening and secondary confirmation formats.
  • Transfer and scale assays from development to routine screening, ensuring robustness, reproducibility, and suitability for automation.
  • Execute high-throughput antibody screening campaigns, including assay setup, sample handling, data acquisition, and preliminary analysis.
  • Perform routine mammalian cell culture, including maintenance, expansion, cryopreservation, and quality control of multiple adherent and suspension cell lines.
  • Maintain meticulous experimental records and effectively communicate findings in internal meetings.
  • Minimum Qualifications:
  • B.S in Biology, Chemistry, Immunology, Biotechnology, or related life science field with 5 years of relevant experience, or M.S. with 3 years of relevant experience in antibody discovery, cell biology, or assay development.
  • Hands-on experience with cell-based binding assays (e.g., flow cytometry, imaging, ligand-receptor interaction assays).
  • Demonstrated experience developing and running functional assays for biologics (signaling, internalization, blocking, effector function, reporter assays).
  • Familiarity with high-throughput screening environments and automated liquid handling is a plus.
  • Strong organizational and time management skills to contribute to multiple projects in a fast-paced environment.
  • Ability to work independently and as part of a collaborative team.

About Prellis Biologics

At Prellis we integrate human biology with machine learning. We aim to revolutionized drug discovery by harnessing the power of human immune system with tightly, integrated machine learning to develop next-generation antibody therapeutics with unparalleled speed, precision and safety. We are committed to empowering our pharmaceutical partners with access to the most promising fully human body candidate rapidly identified from the human immune repertoire, enabling them to bring life-changing treatments to patients faster than ever before.Prellis Biologics is a pre-IPO biotech located in Berkeley CA with a team-oriented, inclusive, and family-friendly culture. Our growing pipeline target high unmet patient needs across therapeutics including metabolic, inflammation, and oncology disease. Prellis has raised funding from top investors, including Celesta, Khosla Ventures, SOSV, & Avidity Partners.

What You Can Expect Of Us

As we work to develop treatments that take care of others, we also work to care for your professional and personal growth and well-being. From our competitive benefits to our collaborative culture, we’ll support your journey every step of the way.

The expected annual salary range for this role in the U.S. is posted. Actual salary will vary based on several factors including but not limited to, relevant skills, experience, and qualifications.

Application deadline

Prellis does not have an application deadline for this position; we will continue accepting applications until we receive a sufficient number or select a candidate for the position.

Prellis Bio is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

We believe diversity, equity, and inclusion need to be at the foundation of our culture. We work hard to bring together diverse teams–grounded in a wide range of expertise and life experiences–and work even harder to ensure those teams thrive in inclusive, growth-oriented environments supported by equitable company and team practices. All candidates can expect equitable treatment, respect, and fairness throughout the interview process.

Salary.com Estimation for Associate Scientist-Sr. Associate Scientist, Cell Based Assays in Berkeley, CA
$98,426 to $118,014
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Prellis Biologics

  • Prellis Biologics Berkeley, CA
  • Position Overview Prellis Biologics uses proprietary technology to 3D print lymph node organoids, which we are using to generate in vitro antibody librarie... more
  • 1 Day Ago

  • Prellis Biologics Berkeley, CA
  • The Opportunity The heart of Prellis Bio strategy is the combination of novel, cutting edge methods in machine learning, biology at scale and next gen anti... more
  • 4 Days Ago

  • Prellis Biologics Berkeley, CA
  • Director or Sr Director, Inflammation Berkeley, CA The Opportunity The heart of Prellis Bio strategy is the combination of novel, cutting edge methods in m... more
  • 4 Days Ago

  • Prellis Biologics Berkeley, CA
  • Senior Associate Scientist/Scientist ? Cell Biology & Immunology Company Overview Prellis Biologics is a dynamic startup revolutionizing the field of immun... more
  • 4 Days Ago


Not the job you're looking for? Here are some other Associate Scientist-Sr. Associate Scientist, Cell Based Assays jobs in the Berkeley, CA area that may be a better fit.

  • Prellis Biologics Berkeley, CA
  • Senior Associate Scientist/Scientist ? Cell Biology & Immunology Company Overview Prellis Biologics is a dynamic startup revolutionizing the field of immun... more
  • 4 Days Ago

  • University of California-Berkeley Berkeley, CA
  • Position overview Position title: Assistant/Associate Project Scientist Salary range: The UC academic salary scales set the minimum pay determined by rank ... more
  • 13 Days Ago

AI Assistant is available now!

Feel free to start your new journey!