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Principal Scientist, Drug Substance

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Revolution Medicines
Full Time position
Listed on 2026-08-30
Job specializations:
  • Research/Development
    Research Scientist, Pharmaceutical Science/ Research, Clinical Research, Medical Science
Salary/Wage Range or Industry Benchmark: 190000 - 238000 USD Yearly USD 190000.00 238000.00 YEAR
Job Description & How to Apply Below

Revolution Medicines is a global, commercial-state oncology company dedicated to discovering, developing and delivering innovative medicines for patients with RAS-addicted cancers. Leveraging its differentiated RAS(ON) tri-complex inhibitor platform, the company is advancing a broad, integrated portfolio of oral RAS(ON) inhibitors designed to directly target the active, cancer-driving state of RAS. Founded on rigorous scientific inquiry and a willingness to challenge long-held assumptions, Revolution Medicines is committed to changing the trajectory of disease for patients with RAS-addicted cancers worldwide.
Our people are united by a shared way of working: follow the science, challenge assumptions, act with urgency and hold ourselves to a high standard of rigor—all in service of patients.
The Opportunity:
Playing a critical role as a technical lead within the Drug Substance function, the position will be responsible for process research and development and scale-up of manufacturing in support of Revolution Medicines’ pipeline compound development, clinical programs and commercial readiness.
Responsibilities:

  • Responsible for developing chemical processes for the manufacture of drug substance, intermediates and/or starting materials, including route evaluation and process optimization.
  • Conduct process development and optimization studies according to the principles of quality by design (QbD), to enable regulatory starting materials designation, establish control strategy and process characterization studies using tools such as design of experiment (DOE) studies.
  • Lead and/or enable technology transfer, process familiarization, and manufacturing at CDMOs.
  • Participate in identification, selection, and management of CROs and CDMOs including management of redundant supply and geographic diversity.
  • Write, review, and approve protocols, manufacturing batch records, and development and campaign reports.
  • Author, review the relevant CMC sections of regulatory filings and patent applications.
  • Partner with analytical development, pharmaceutical development, and supply chain functions to design overall strategy for programs.
  • Communicate effectively within cross functional project teams.
  • Travel to CRO/CDMO for the oversight of development activities and manufacturing (up to approximately 15%).
Required Skills, Experience and

Education:

  • PhD (minimum MSc degree) in organic chemistry, chemical engineering or related discipline
  • 10 or more years (15+ years for Master’s degree) of relevant industrial experience in chemical / drug substance process research and development.
  • Strong people management skills.
  • Hands-on proficiency in synthetic organic chemistry.
  • Knowledge of current ICH guidelines, GMP, and relevant industry practices.
  • Working experience and knowledge of regulatory submissions (IND, IMPD, NDA and MAA).
  • Previous experience managing projects at CROs/CDMOs.
  • Strong problem solving skills with sound technically driven decision-making ability.
  • Effective written and verbal communication skills and interpersonal skills.
  • An innovative team-player with high energy for our dynamic company environment.
The base pay salary range for this full-time position for candidates working onsite at our headquarters in Redwood City, CA is listed below. The range displayed on each job posting is intended to be the base pay salary range for an individual working onsite in Redwood City and will be adjusted for the local market a candidate is based in.

Our base pay salary ranges are determined by role, level, and location. Individual base pay salary is determined by multiple factors, including job-related skills, experience, market dynamics, and relevant education or training.
Base Pay Salary Range
$190,000 - $238,000 USD
Revolution Medicines is an equal opportunity employer and prohibits unlawful discrimination based on race, color, religion, gender, sexual orientation, gender identity/expression, national origin/ancestry, age, disability, marital status, medical condition, and veteran status.
Revolution Medicines takes protection and security of personal data very seriously and respects your right to privacy while using our website and when contacting us by email or phone. We will only collect, process and use any personal data that you provide to us in accordance with our CCPA Notice and Privacy Policy. For additional information, please contact
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