Head of Computer Use​/AI Engineer

Edward Mann are hiring for an excellent Technology Start-up based in San Francisco.

We are seeking a Head of Computer Use / Senior AI Engineer (hands on role). Driving the evolution of the next generation of browser agents (testing browser agents).

To lead the design, training, and advancement of next-generation AI agent systems. This role involves fine‑tuning large language models (LLMs) and developing intelligent agents capable of navigating and interacting with real web environments. It’s a high‑impact position combining hands‑on engineering, experimentation, and strategic input. You’ll collaborate closely with technical leadership, contribute directly to product direction, and mentor other engineers in developing advanced agent capabilities.

• Develop, train, and deploy LLM‑powered agents that interact with websites through real browser interfaces.
• Fine‑tune foundation models using advanced methods (e.g., LoRA, PEFT, DPO, RLHF) and select the best approach for each use case.
• Design reinforcement learning systems that improve agent reasoning, adaptability, and task performance.
• Own the full agent pipeline—from model architecture and policy design to simulation frameworks and testing environments.
• Rapidly prototype, run experiments, and refine solutions to push the limits of agent performance.
• Partner with technical leadership to shape product direction and research priorities.
• Mentor and support other engineers, helping to grow a strong, mission‑driven technical team.
• Build and coordinate multi‑agent workflows with structured roles, memory systems, and effective trajectories.

• Strong background in machine learning with a PhD or equivalent industry experience in AI / ML / Computer Science.
• Hands‑on experience fine‑tuning LLMs.
• Deep applied knowledge of reinforcement learning techniques.
• Experience building agents for real‑world applications (bonus : browser‑based or robotics experience).
• Strong coding and experimentation skills, with a preference for practical problem‑solving over theory alone.
• A sense of ownership and drive to build impactful systems beyond titles or hierarchy.
• Experience mentoring, managing, or growing technical teams.

• Record of impactful research publications or open‑source contributions.
• Experience in high‑growth, fast‑paced start‑up environments.