Who does what in a product organisation — the core roles, the adjacent ones, the specialisations, and the seniority ladder. What each one owns, what they are measured on, and where the boundaries genuinely blur.
Product ManagerPM
Product Manager — chef de produit in French job ads, though the English title dominates in tech.
- Owns
- The what and the why: problem framing, discovery, prioritisation, specification, and the outcome once shipped. Not the how — that belongs to engineering.
- Measured on
- Product outcomes: adoption, retention, conversion, revenue impact of the area owned. Not on volume shipped.
- Works with
- Engineering and Design daily; Data, PMM, Sales, Support weekly.
- Typical week
- Customer interviews, backlog refinement, writing specs, reviewing metrics, arbitrating scope with engineering, stakeholder updates.
Product OwnerPO
A Scrum role, not originally a job title.
- Owns
- In the Scrum Guide: maximising the value of the work the team produces, through backlog management — ordering items, making them clear, ensuring the team understands them.
- Measured on
- Backlog health, sprint predictability, acceptance quality — closer to delivery than to outcome.
- Works with
- The Scrum team daily; the PM or stakeholders for direction.
- In practice
- In many European companies — France included — PO is used as a job title for an execution-focused PM: closer to the sprint, further from strategy and discovery. This local usage does not match the Scrum definition, which is why the two titles are so often confused.
Product Marketing ManagerPMM
Responsable marketing produit.
- Owns
- Positioning, messaging, go-to-market and launch. Also competitive intelligence, pricing input, sales enablement and the narrative given to the market.
- Measured on
- Launch performance, feature awareness and adoption, win rate against named competitors, quality of sales collateral.
- Works with
- PM (constantly — they are two halves of one story), Marketing, Sales, Customer Success.
- Boundary
- The PM decides what gets built and why; the PMM decides how it is explained and sold. When the boundary is unclear, launches slip or ship unannounced.
Product DesignerUX / UI
Designer produit — often split into UX Designer and UI Designer in larger teams.
- Owns
- Flows, interfaces, interaction and the design system. In many teams also user research, shared with the PM.
- Measured on
- Usability (task success, time on task, error rate), design-system consistency, and contribution to activation and funnel completion.
- Works with
- PM and Engineering daily; Research and Brand as needed.
Where it actually breaks
Having both a PM and a PO on the same scope without an explicit split is the most common structural failure. It produces duplicated arbitration, contradictory priorities for engineering, and no single accountable owner. If both roles exist, the boundary has to be written down: typically PM owns discovery and outcome, PO owns delivery and backlog.
— what changes at each level is the scope of ambiguity owned, not the volume of work
Associate / Junior PMOne feature
Executes a defined scope. The problem is handed over already framed; the work is to deliver it well.
Product ManagerOne product area
Frames the problems in their own area, runs discovery, owns the outcome. Needs direction on strategy but not on execution.
Senior PMA complex area
Handles ambiguity without a brief, manages cross-team dependencies, and influences peers who do not report to them.
Principal PMIC track
Senior individual contributor: works the hardest company-level product problems without managing people. Parallel in level to a manager, not below it.
Group PM / LeadSeveral PMs
First management step: still owns a scope, and now also grows two to four PMs.
Head of ProductThe product org
Owns the whole product surface and the team that builds it. Translates company strategy into a product roadmap.
VP ProductOrg & process
Owns the operating model as much as the product: hiring, rituals, prioritisation frameworks, and cross-functional alignment at scale.
CPOExec / company
Sits at the executive table. Owns product strategy as a component of company strategy, arbitrates investment across the portfolio, and answers for product results to the board.
Reading the ladder
Titles are not portable between companies: a Senior PM in a 2,000-person company and a Head of Product in a 30-person startup can own comparable scope. Read the scope of ambiguity owned, not the title.