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-efficient 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 solid 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
- Flexible but meaningful weekly commitment

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📌 Founding Senior AI Engineer – Drug Discovery & Healthcare AI ( Equity) (Toronto)
🏢 Bactrix
📍 Toronto