Senior Scientist, Discovery Pharmacology

Confirmed live in the last 24 hours

Altos Labs

San Francisco Bay Area, CA

On-site

Posted April 21, 2026

Job Description

Our Mission

Our mission is to restore cell health and resilience through cell rejuvenation to reverse disease, injury, and the disabilities that can occur throughout life.

For more information, see our website at altoslabs.com.

Our Value

Our Single Altos Value: Everyone Owns Achieving Our Inspiring Mission.

Diversity at Altos

Altos Labs has been named one of the Top 3 Biotech Companies and ranked for the second year on the Forbes 2026 Best Startups in America list. At Altos, exceptional scientists and industry leaders from around the world work together to advance a shared mission. Our intentional focus is on Belonging, so that all employees know that they are valued for their unique perspectives. We are all accountable for sustaining a diverse and inclusive environment.

What You Will Contribute To Altos

At Altos, your work will be at the heart of a mission to transform medicine by reversing disease and restoring cell health. You will contribute to the development of a new generation of drugs rooted in an advanced understanding of cellular rejuvenation and resilience.

As a Sr Scientist of Discovery Pharmacology team, your primary focus will be supporting the in vitro pharmacology needs of the Drug Discovery and Development (3DS) division of Altos. This is a laboratory research scientist position focused on the development and execution of cell-based and biochemical assays, and complex in vitro models. Your work will contribute to our drug discovery campaigns across a diverse portfolio of drug discovery and development stage projects. Your expertise will be instrumental in driving our mission and making a significant impact in aging/rejuvenation biology and drug discovery.

Responsibilities

Investigate and validate drug targets, define mechanisms of action (MoA) through robust pharmacology strategies.
Design, automate, and troubleshoot all kinds of assays.
Analyze data and present it to help make project decisions.
Keep great records in the electronic lab notebook (ELN), ensure reproducibility and data integrity.
Work with people across different teams, including the Product Development crew.

Who You Are

Required Qualifications

A Ph.D. (Pharmacology, Bio, etc.) plus at least 6 years of post-PhD experience AND 3+ years industry experience in drug discovery and development.
You need to be able to design your own experiments and get solid, repeatable results.
Major experience with cellular and biochemical assays and complex in vitro models.
You must be a pro with lab automation and high-throughput techniques (think Bravo, Echo, I.DOT, and tech like MSD, HTRF, AlphaLISA).
Good communication skills and you're fast, organized, and can handle a lot.
Experience working with outside labs (CROs) is also required.

Preferred Qualifications

Experience with high-content imaging in high-throughput settings (96- and 384-wells).
Worked with different drug types (small molecules, nucleic acids, gene therapies).
Knowledge of aging/rejuvenation biology is a huge plus.
Screening experience with various modalities (small molecules, siRNA, ASO).
Familiarity with microfluidics assays.

The salary range for Redwood City, CA:

Senior Scientist I, In Vitro Pharmacology $176,000 - $225,700

Exact compensation may vary based on skills, experience, and location.

For UK applicants, before submitting your application:

- Please click here to read the Altos Labs EU and UK Applicant Privacy Notice (bit.ly/eu_uk_privacy_notice)
- This Privacy Notice is not a contract, express or implied and it does not set t

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