The Great Product Owner: Precision That Builds Team Trust
“He always had an answer, or if he didn’t have the answer, he tried to ask the clients, the users, the stakeholders.” – Mirco Gerling
In pharmaceutical software, the wrong dose can kill someone. So when Mirco worked with a PO in that domain, precision wasn’t a virtue — it was a survival requirement. The PO wrote meticulous user stories in classic “As a user, I want… so that…” format with very good acceptance criteria.
The developers always knew what done meant. And when, mid-sprint, the team spotted a gap — “Is 80% tolerance of 100% or 80% of all?” — the PO was there, asking the right people, refining or splitting the story, never letting ambiguity ship. Even when half the team was out sick in winter, the remaining developers could deliver because the user stories were clear enough to stand on their own. Stories linked to automated tests.
Each acceptance criterion traceable to the test that proved it. The result: a team that trusted their PO. As Mirco puts it, that trust came from one thing — the PO had already done the work needed to help the team understand what to do and how they’d know it was done.
Self-reflection Question: What’s the level of precision in your team’s user stories signaling to your developers about how much you trust them — and how much you’ve prepared for them?
The Bad Product Owner: The Hydra PO with Seven Heads
“If the developers had questions, the people said: ‘it’s not my ticket, it’s not my story.'” – Mirco Gerling
Five Scrum teams. One Product Owner. Seven requirements engineers writing user stories alongside. Eight people doing the work of product ownership — and nobody owning any of it. Developers learned quickly that asking a question meant being bounced from one requirements engineer to another. “It’s not my ticket.” The eight-person PO group split into two sub-teams who, when they spoke about each other, used “you” and “they” instead of “we.”
Decisions made in week one collided with decisions made in week three. Mirco’s intervention: treat the PO group like a Scrum team. Eight people is a team-sized group. Run retrospectives with them. Get them communicating as a unit instead of as parallel individuals.
The one anchor that kept things from completely falling apart was the single PO at the top, who could still say “this feature we need at the end of the year, the other can wait.” Without unified prioritization, the hydra has no direction — just seven heads pulling in seven ways.
Self-reflection Question: Where in your product organization are decision-makers proliferating without a shared mandate — and what’s the cost in clarity for the teams downstream?
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About Mirco Gerling
Mirco is an experienced Scrum Master in the public sector. With a strong IT background, he has spent 25 years developing software and driving agile transformations. Passionate about innovation and teamwork, Mirco brings expertise and dedication to every project.
You can link with Mirco Gerling on LinkedIn.
