Research Lead / Principal Scientist & Manager Post-Training (AI)

Location: Remote (US, Canada, EU) or Toronto, ON, Canada

Company

hirify.global AI Lab advances state-of-the-art research across generative AI, multimodal foundation models, and reasoning systems to impact industries that shape the physical world.

What you will do

• Own post-training strategy for model development, covering RLHF, preference optimization, agentic systems, and long-horizon reasoning.
• Develop novel algorithms to improve model reliability, controllability, and alignment.
• Manage and mentor a growing team of AI scientists, setting technical direction and research priorities.
• Design evaluation frameworks for tool use, agentic behavior, and real-world workflow completion.
• Partner with infrastructure teams to build scalable and reproducible post-training workflows.
• Contribute to publications at top-tier venues (NeurIPS, ICML, ICLR, CVPR, SIGGRAPH) and patents.

Requirements

• Deep hands-on expertise in reinforcement learning for foundation models (RLHF, RLAIF, DPO, PPO).
• Proven experience leading or mentoring technical research teams in academia or industry.
• PhD or equivalent depth of industry research experience in ML, RL, AI, or a related field.
• Strong intuition for model behavior, alignment challenges, and post-training trade-offs.
• Ability to communicate complex technical trade-offs to both technical and non-technical audiences.
• Must be based in the US, Canada, or the EU.

Nice to have

• Experience at a frontier model lab or advanced applied AI organization.
• Strong publication record at leading ML or AI venues.
• Background in alignment research, preference learning, or agentic AI.
• Experience deploying or supporting production AI systems.

Culture & Benefits

• Collaborative environment with a direct line from research advances to product impact at scale.
• Access to unique, domain-grounded verifiers based on physics simulation and CAD kernels.
• Inclusive culture committed to diversity and equal opportunity.
• Competitive compensation package including annual cash bonuses and stock grants.