Principal​/Senior Principal Scientist- Investigative Toxicology

The Position

We advance science so that we all have more time with the people we love.

Genentech’s Investigative Toxicology group within the Translational Safety department is dedicated to elucidating the mechanisms underlying toxicities observed for novel therapeutics spanning from drug discovery through clinical development. By employing state-of-the-science in vitro and ex vivo experimental approaches, the group provides fit-for-purpose solutions to address target safety assessments, guide lead optimization, and de-convolute complex safety liabilities.

We are seeking an experienced and forward-thinking to join our team as an individual contributor. In this role, you will be responsible for driving the strategy, development, and implementation of predictive and mechanistic safety capabilities specifically tailored to support our Neuroscience and Cardiovascular, Renal, and Metabolic (CVRM) portfolios. Operating in newly established spaces characterized by emerging therapeutic modalities, you will establish unique preclinical safety roadmaps, interface directly with cross-functional project teams, lead matrixed experimental execution with laboratory staff, and partner with internal predictive modeling groups and external consortia to advance New Approach Methodologies (NAMs).

1. Portfolio Strategy & Project Team Engagement

• Serve as the primary Investigative Toxicology subject matter expert and representative on discovery and early development project teams across the Neuroscience and CVRM portfolios.
• Apply a deep working knowledge of drug discovery/development workflows to identify rate-limiting safety liabilities early, define critical path questions, and influence candidate selection.
• Partner with Project Team Toxicologists, Discovery Scientists, and Pathologists to guide nonclinical safety strategies and mechanistic de-risking plans.

2. Preclinical Safety Roadmaps for Emerging Modalities

• Establish, qualify, and execute hypothesis-driven preclinical safety roadmaps tailored to novel and emerging therapeutic modalities (e.g., advanced biologics, nucleic acid therapies, cell and gene therapies, multi-specifics).
• Operate effectively in ambiguous, newly established scientific areas by identifying technological gaps and designing innovative solutions to characterize on-target and exaggerated pharmacology liabilities.

3. Capability Development & Matrixed Execution

• Drive the strategic identification, validation, and implementation of next-generation capability needs for Neuro and CVRM safety assessment.
• Act as the lead scientific strategist leveraging matrixed support from Investigative Toxicology wet-lab members to design, oversee, and interpret complex experimental studies.
• Ensure rigorous data integrity, thorough electronic laboratory notebook documentation, and publication-ready technical reports.

4. Predictive Toxicology Integration

• Partner closely with colleagues across the Predictive Toxicology group—specifically Model Development / Complex In-Vitro Systems (CIS) and Computational Toxicology—to establish translatable, predictive workflows.
• Co-develop and implement human-relevant cellular systems (e.g., organ-on-a-chip, microphysiological systems, iPSC-derived cellular models, high-content imaging, and toxicogenomics) to tailor assay platforms to project-specific liabilities.

5. External Consortia & Scientific Representation

• Represent the Investigative Toxicology group and Genentech in key external industry, academic, and regulatory consortia (e.g., HESI, IQ Consortium, NC3
  
  Rs).
• Spearhead external engagement and publication efforts around the qualification and regulatory adoption of New Approach Methodologies (NAMs) within…