Senior Research Associate, Analytical Development (South San Francisco, CA)

Sutro Biopharma, Inc. is looking for a Senior Research Associate to join our Analytical Development group to support chromatography and mass spectrometry analyses for antibodies (mAb), bispecific antibodies (bsAb), antibody drug conjugates (ADCs), immunostimulatory antibody drug conjugate (iADCs) and cytokine derivatives.


  • Perform routine chromatography assays to support upstream, downstream, and formulation process development
  • Process and interpret data from assays to communicate and present to internal and external colleagues
  • Develop chromatography assays for characterization of recombinant proteins such as antibody derivatives
  • Qualify assays and support technology transfer to Sutro QC, and to partner and contract testing laboratories
  • Author and review SOPs, protocols, and technical reports
  • Engage collaboratively within Analytical Development, other functional areas, external partners, and CMOs
  • Perform routine maintenance and troubleshoot HPLCs and other separations-based instrumentation


  • BS/MS in analytical chemistry, biochemistry, molecular biology or related scientific field and 2+ years of industry experience in the characterization of large molecule biologics is required
  • Experience with operating and maintaining of HPLCs & UHPLCs is highly preferred
  • Experience with data processing software such as Chromeleon, OpenLab ChemStation, or Empower is preferred
  • Understanding of some separation methods (Protein A/G/L, RP, IEX, SEC, HIC, HILIC) is preferred.
  • Experience with method development, qualification, and method transfer to a QC environment is a plus
  • Knowledge of alternative detection modules such as FLD, MALS, ELSD, and/or CAD is a plus
  • Knowledge of additional analytical techniques such as iCIEF, mCE-SDS (Caliper), and/or CE-SDS is a plus
  • Flexibility to work on multiple projects and communicate effectively in a fast-paced environment is essential

Sound exciting? Apply today and join our team!

Please submit resume for Req. #2272 to Please visit our website at for more information.

Sutro Biopharma, Inc. requires all new hires to be fully vaccinated for COVID-19 prior to the first date of employment.  As required by applicable law, Sutro will consider requests for reasonable accommodations.

Sutro provides a competitive benefits package that includes a choice of health, dental, and vision insurance, life insurance, flexible spending accounts, 401K plan, PTO, ESPP (Employee Stock Purchase Plan) and stock options.

As an equal opportunity employer, we believe in fostering a culture that is inclusive and values diversity in background and opinions. Sutro Biopharma hires extraordinary individuals into every position in the company and is committed to the diversity of our team. Our company progresses without regard of race, ethnicity, gender, sexual orientation, religious belief, age, disability, or citizenship status. We are dedicated to creating a safe environment where our employees can grow and succeed together.

Salaries listed on jobsites may not be representative of salary ranges at Sutro Biopharma.

We look forward to hearing from candidates who are interested in exploring opportunities with Sutro! Our People & Culture team/hiring managers are unable to respond and do not accept solicitations from third-party agencies.

Company Overview

Sutro Biopharma, Inc., located in South San Francisco, is a clinical-stage drug discovery, development, and manufacturing company. Using precise protein engineering and rational design, Sutro is advancing next-generation oncology therapeutics.

Sutro is dedicated to transforming the lives of cancer patients by creating medicines with improved therapeutic profiles for areas of unmet need. To date, Sutro’s platform has led to cytokine-based immuno-oncology therapies, ADCs, vaccines, and bispecific antibodies directed at precedented targets in clinical indications where the current standard of care is suboptimal.

The platform allows it to accelerate discovery and development of potential first-in-class and best-in-class molecules through rapid and systematic evaluation of protein structure-activity relationships to create optimized homogeneous product candidates.

In addition to developing its own oncology pipeline, Sutro is collaborating with select pharmaceutical and biotech companies to discover and develop novel, next-generation therapeutics. As the pace of clinical development accelerates, Sutro and its partners are developing therapeutics designed to more efficiently kill tumors without harming healthy cells.