Bactrix is looking for a Founding Senior AI Engineer to help shape the core technology behind an AI-driven drug repurposing platform for antimicrobial resistance (AMR) - one of the most urgent, underfunded problems in global health.

This is a hands-on, high-ownership role for someone who genuinely loves building - not maintaining, but inventing. You'll work directly with our founder and science team to push the platform's discovery engine, agent architecture, and reasoning pipeline forward, finding smart, low-cost ways to make the system more capable without needing big infrastructure or big budgets.

What You'll Do
Architect and improve our multi-agent AI pipeline (LLMs, RAG, agent orchestration) for pharmaceutical/biomedical discovery.
Find creative, resource-effective ways to increase model capability and accuracy without expensive infrastructure.




Collaborate directly with our science team to ensure AI outputs are scientifically grounded and trustworthy.
Help define technical direction and architecture as a founding-level technical voice, not just an execution hire.

What We're Looking For
Genuine expertise in AI/ML, LLMs, and agentic systems - someone who can innovate, not just implement.
Experience in or robust familiarity with pharma, biotech, or life sciences applications of AI.
Comfortable operating lean - building smart, cost-efficient solutions at an early-stage startup, not enterprise-scale budgets.
A founder mindset: ownership, initiative, and genuine belief in the mission.

Terms
Remote
Equity-based compensation at this stage (pre-seed); cash compensation and equity terms to be discussed as funding is secured
Adaptable but meaningful weekly commitment

📌 Founding Senior Ai Engineer – Drug Discovery & Healthcare Ai Equity Toronto
🏢 Bactrix
📍 Toronto