Cellular Biologist

Cellular Biologist at TOPOS BIO — South San Francisco, CA, US

  • Company: TOPOS BIO
  • Location: South San Francisco, CA, US
  • Employment type: Full-time
  • Posted: 2026-09-30

About this role

TOPOS BIO

At Topos Bio, we're pioneering drug discovery for intrinsically disordered proteins—targets that have eluded conventional approaches in neurodegeneration, oncology, and cardiometabolic disease.

We're seeking a cell biologist to develop and execute cell-based assays for validating computational predictions and supporting medicinal chemistry efforts. You'll work at the interface of disease biology, protein biophysics, and drug screening.

WHAT YOU WILL DO

  • Develop and optimize mammalian cell-based assays for disordered protein targets
  • Execute phenotypic and reporter-based screening campaigns to validate computational hits
  • Characterize compound activity and support structure-activity relationship studies
  • Collaborate with computational scientists to integrate experimental data with modeling workflows
  • Establish robust assay protocols and quality control metrics

WHAT WE ARE LOOKING FOR

  • Strong foundation in mammalian cell culture and cellular assay development
  • Experience with disease-relevant cellular models
  • Ability to troubleshoot complex biological systems and optimize experimental protocols
  • Track record of productivity and effective collaboration

PREFERRED

  • PhD in cell and molecular biology with focus on disease models
  • Industry experience in drug discovery or biotech
  • Experience with reporter assays and high-throughput screening platforms
  • Familiarity with oncology, neurodegeneration, or metabolic disease models
  • Track record of developing novel cellular assays or screening approaches

Apply at TOPOS BIO

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