← Back to blog

Engineering ManagementMar 10, 20262 min read

The first 30 days as an EM: a metrics playbook

New engineering managers ask for dashboards. They actually need three numbers, four conversations, and the patience to wait two weeks.

Emma T.
Emma T.Engineering Manager

The first instinct of a new EM is to measure people. The first instinct of a good EM is to measure the environment those people work in.

New engineering managers often arrive asking for dashboards. What they need first is three numbers, four conversations, and the patience to wait two weeks before changing how the team works.

Three numbers, in order

Start with review latency — the cheapest signal of collaboration vs queueing. Then PR size distribution — large PRs usually mean missing structure, not missing effort. Only then cycle time.

Review latency → PR size → cycle time. Skipping steps sends you chasing the wrong bottleneck.

If reviews are slow and PRs are huge, cycle time will only yell louder. Fix the stage that moved first.

Four conversations, then act

Metrics point you to people and topics — the 1:1 is where data becomes trust.

Pair every metric with a conversation. Ask the top reviewer if load felt fair. Ask the author of the largest PR if it could ship in pieces. Ask the tech lead which rituals they protect. Ask the quietest engineer what is in the way.

Wait two weeks before changing process

Most things that look broken in week one are explained by context you have not earned. Resist rewriting standup, retro, or the PR template until you understand why they exist.

When you do change something, change one thing. Name the metric you expect to move and revisit in a month. That builds more trust than any dashboard.

Key takeaways

  • Review latency, PR size, then cycle time — in that order.
  • Four conversations turn metrics into trust, not surveillance.
  • One process change at a time, with a named expected outcome.
Share this articledevinsights.net/blog/new-em-first-30-days

Product3 min read

DORA without dashboard fatigue

Four metrics matter — but only if your team sees them in standup, not in a slide deck nobody opens.

Jordan Lee
Jordan LeeMay 12, 2026
Read
Early access

Turn commits into conversations.

Join the waitlist for private beta — free, no credit card.

Get early access