Senior Software/AI Engineer

About the Company

Pathos is building a next-generation biotech with AI at the core. We are building the largest foundation model in oncology and pairing it with proprietary AI systems and 200+ petabytes of multimodal data to make drug development decisions with more precision.

Responsibilities

• Build AI agents and copilots for internal teams across BD, clinical, computational biology, and lab
• Build robust data pipelines into a governed warehouse and knowledge graph
• Build MCP style servers and tooling so agents can safely talk to internal systems
• Work across the full product lifecycle: prototype, iterate, ship, and maintain

Requirements

• 6 to 8+ years of professional software, ML, or product engineering experience
• Proficiency in Python and TypeScript in production
• Experience building full stack applications
• Experience with production grade APIs, eventing, and data engineering
• Experience with cloud native environments like GCP or BigQuery
• Ability to own services end to end: architecture, implementation, testing, and observability

Preferred Qualifications

• Prior work on agentic systems at scale, retrieval systems, or ML infrastructure
• Experience operating in highly regulated environments using patient and clinical trial data