Product Manager, Agent Harness & Modelling in London

Who are we? Our mission is to scale intelligence to serve humanity. We’re training and deploying frontier models for developers and enterprises who are building AI systems to power magical experiences like content generation, semantic search, RAG, and agents. We believe that our work is instrumental to the widespread adoption of AI.

We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. We like to work hard and move fast to do what’s best for our customers. Cohere is a team of researchers, engineers, designers, and more, who are passionate about their craft. Each person is one of the best in the world at what they do. We believe that a diverse range of perspectives is a requirement for building great products. Join us on our mission and shape the future!

About Cohere And North: Cohere is revolutionizing enterprise AI with North, an agentic AI platform designed to securely deploy AI agents and automations within organisations' infrastructure. North empowers employees to streamline workflows, automate repetitive tasks, and unlock actionable insights while ensuring data privacy and compliance. North combines cutting‑edge generative and search models with customizable integrations to drive productivity and innovation at scale.

Role Overview: We are seeking an Agent Harness Product Manager to own the execution layer that makes North agents reliable, capable, and production‑ready. This is a role that sits at the intersection of three domains:

• Agent Loop and Execution: Own the core agent runtime: tool orchestration, parallel execution, sub‑agent delegation, sandbox code execution, and failure recovery. You will define how North agents plan and act across long, multi‑step workflows and ensure the execution environment is robust enough for the most demanding enterprise tasks. You are expected to engage at the implementation level, contributing to architecture decisions alongside engineering rather than simply handing off requirements.
• Context Engineering: Own how our Agents manage the context window as a deliberately controlled resource. This includes progressive disclosure of tools and skills, context compaction and summarization, offloading of large payloads to a persistent filesystem, and the instrumentation that keeps agents oriented across extended trajectories.
• Model‑Scaffolding Co‑evolution: Own the feedback loop between North’s harness and the Modeling Team. This PM is the connective tissue that makes that possible: ensuring harness design decisions are validated by Modeling before they are built, that evals are the shared bridge between both teams, and that as the harness evolves the model evolves with it.

Responsibilities:

• Define and own the roadmap for North’s agent harness, including the agent loop, context engineering layer, tool orchestration, sandbox execution, and sub‑agent delegation.
• Serve as the primary interface between North engineering and Cohere’s Modeling team, ensuring new harness capabilities are validated before being built and that neither team paints itself into a corner.
• Own North’s agentic evaluation framework, ensuring evals are compatible with both the North harness and Modeling’s training infrastructure, and that they serve as a reliable bridge between product and research.
• Engage enterprise customers to surface real‑world agentic failures and translate findings into concrete product and model requirements.
• Stay current with the open‑source and commercial agent ecosystem and drive adoption decisions that keep North’s architecture aligned with emerging standards.

Requirements:

• 5+ years of product management experience in agentic AI systems, developer infrastructure, or applied ML products.
• Deep understanding of modern LLM agent architectures, including multi‑agent systems, tool‑augmented reasoning, memory and retrieval, programmatic orchestration, RAG, and long‑horizon execution.
• Strong grasp of agentic evaluation design, including how to measure task completion, failure recovery, and long‑horizon reliability, and how to diagnose model vs. scaffolding gaps.
• Technically deep enough to contribute to architecture decisions at the implementation level: comfortable reviewing and shaping design docs, reasoning about async execution patterns, sandboxed environments, filesystem design, and the tradeoffs that come with building harness capabilities into a production platform.
• Ability to flex between ML research conversations and engineering architecture discussions with equal fluency.
• Track record of shipping platform‑layer products with demonstrated impact on reliability, performance, or capability.

Nice‑to‑Haves:

• An active practitioner of agent frameworks who regularly builds with and follows the latest developments in open‑source harnesses, coding agents, and orchestration tools in both professional and personal work.
• Hands‑on experience with enterprise agentic deployments: multi‑tenant orchestration, tool permissioning, audit trails, and compliance requirements.
• Familiarity with infrastructure constraints relevant to enterprise deployments: on‑premises environments, scalability challenges, and the operational tradeoffs of running complex agent workloads in restricted or air‑gapped settings.
• Prior work at the intersection of research and product, translating nascent model capabilities into shipped product features.
• Background working within or closely alongside an ML research or post‑training team.

Why Join Cohere?

• Impact: Shape how Canada’s most important public institutions adopt and deploy frontier AI.
• Innovation: Work alongside leading researchers and engineers solving complex ML challenges.
• Growth: Competitive compensation, equity options, and opportunities for professional development.
• Flexibility: Hybrid work model with offices in key global locations (Toronto, Montreal, New York, San Francisco, London, Paris, and Korea).

We value and celebrate diversity and strive to create an inclusive work environment for all. We welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, please submit an Accommodations Request Form, and we will work together to meet your needs.

Full‑Time Employees At Cohere Enjoy These Perks:

• Open and inclusive culture and work environment.
• Work closely with a team on the cutting edge of AI research.
• Weekly lunch stipend, in‑office lunches & snacks.
• Full health and dental benefits, including a separate budget to take care of your mental health.
• 100% Parental Leave top‑up for up to 6 months.
• Personal enrichment benefits towards arts and culture, fitness and well‑being, quality time, and workspace improvement.
• Remote‑flexible, offices in Toronto, New York, San Francisco, London and Paris, as well as a co‑working stipend.
• 6 weeks of vacation (30 working days).

If some of the above doesn’t line up perfectly with your experience, we still encourage you to apply!