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Salary
$87k – $91k per year
Location
In office (South San Francisco)
Seniority
Junior · 2+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Aug 22, 2026.

Overview
Company
Impact
Profile match
Innovative therapeutics that target serious viral and liver diseases Assembly Bio is applying our passion, scientific ingenuity and deep knowledge of virology and liver diseases to pursue novel therapies with the potential to change the paradigm for the treatment of serious diseases.

POSITION SUMMARY

Position Title:Research Associate, Discovery Biology

Reports to:Senior Scientist, Discovery Biology

Status:Regular, Full-time, Exempt

Location: On-Site, South San Francisco, CA

Summary: We are seeking a creative and highly motivated Research Associate to join our Discovery Biology team at our South San Francisco location. You will work closely with members of the drug discovery team to conduct and oversee biological testing of new inhibitors.

Specific responsibilities include, but are not limited to:

  • Executing in vitro experiments to identify and characterize compounds with biological activity, specially viral infection inhibitors.
  • Developing, optimizing, and validating biochemical and cell-based assays to support ongoing discovery projects
  • In collaboration with senior research member, making detailed observations, analyzing data, and interpreting results
  • Effectively supporting multiple projects and learning new techniques to support novel exploratory discovery work, as needed
  • Presenting experimental findings, assay results, and scientific rationale clearly to internal project teams to support data-driven decision-making
  • Utilizing data analysis software and MS Office applications
  • Managing compound inventories and assay data
  • Participating in general lab maintenance including reagent preparation, ordering of general lab supplies, and maintenance of equipment

This job description outlines the primary duties and responsibilities of the role; however, it is not intended to be all-inclusive. The scope of responsibilities may be modified, expanded, or adjusted at the discretion of the organization to meet evolving business needs.

Qualifications Include:

  • Sc./M.S. or equivalent degree in Cell Biology, Molecular Biology, Virology, or relevant scientific discipline
  • Minimum of two (2) years of relevant experience in industrial or academic settings, preference given to experience in a drug discovery setting
  • Strong expertise in assay development, cell biology, virology, and molecular biology techniques, e.g. sterile technique, maintenance of mammalian cells, cytotoxicity, virus production and titration, transporter & reporter assays, antiviral activity assays & mechanism of action studies; ELISA, (RT)qPCR; molecular cloning; transfection; Western blot; etc.
  • Must be comfortable working in a BSL2 setting with potentially infectious agents
  • Demonstrated expertise in ensuring good laboratory practices and BSL2 standards
  • Ability to clearly summarize and present experimental findings, data interpretation, troubleshooting outcomes, and scientific insights to support assay optimization and compound characterization
  • Motivated, and proactive cell biologist and/or molecular virologist with desire to work in a fast-paced, dynamic environment
  • Familiarity with Microsoft Office applications, molecular cloning programs, GraphPad Prism and scientific informatics tools for data input, analysis, and management

Pay Range: $87,000 - $91,260 annualized

The stated pay range for this position reflects the San Francisco Bay Area job market. Assembly Bio establishes pay ranges based on geographic work locations. Additional factors such as academic credentials and relevant experience will influence the actual salary offered.

About Assembly Bio

Assembly Bio (NASDAQ: ASMB) is an ambitious biopharmaceutical company with cutting-edge therapeutic candidates capable of improving the lives of millions living with devastating viral and liver diseases. We have multiple ongoing clinical programs focused on the development of novel treatments for herpesviruses, hepatitis delta virus (HDV), cholestatic liver diseases and hepatitis B virus (HBV). Further, our research organization is dedicated to the discovery of new therapies to change the treatment paradigm for individuals living with serious viral and liver diseases.

We pride ourselves on creating a culture and work environment that is scientifically driven, ambitious, and collaborative. We encourage diversity of thought that leads to great innovation and are looking to add great people to our dynamic team who are driven to transform the lives of patients. We set our sights high-and pursue our goals with determination. Our unique organization stands ready to welcome talented, motivated individuals, who share our ambitions.

As an equal opportunity employer, we are committed to diversity and inclusion and will

not tolerate discrimination and harassment of any kind. All employment decisions are based on business needs, job requirements and individual qualifications, without regard to race, color, religion or belief, national, social or ethnic origin, sex (including pregnancy), age, physical, mental or sensory disability, HIV status, sexual orientation, gender identity and/or expression, marital, civil union or domestic partnership status, past or present military service, family medical history or genetic information, family or parental status, or any other status protected by the laws or regulations in the locations where we operate.

Information for Recruitment Agencies

Assembly Bio does not accept from recruiters/agencies any unsolicited resumes, or any candidate information including blinded resumes and will not be responsible for any fees related to resumes or candidate information that is unsolicited. Please do not contact hiring managers or Assembly Bio employees directly with any information related to a resume or a candidate. We handle all recruiting through our internal Human Resources team, and we will reach out to you directly should we wish to engage in a search. Your willingness to comply with this will significantly impact any decision we may make about doing business with you.

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