Head of Engineering — First 90 Days

A playbook for your first 90 days: discovery, planning, and execution so you build trust and momentum without burning bridges.

The first 90 days set the tone for your tenure. Move too fast and you break trust; move too slow and you lose credibility. This playbook focuses on discovery, planning, and execution so you build momentum without burning bridges.

Discovery

Stakeholder map. Identify who has influence over engineering outcomes: execs, product, other eng leaders, key ICs. Understand their expectations and where they think things are broken.

Technical and org debt. Get a clear picture of system health (reliability, security, scalability) and org health (vacancy, burnout, level mix). Use existing dashboards, incident history, and 1:1s. See Scaling engineering orgs for patterns that affect coordination.

System and team health. Who owns what? Where are the single points of failure? What’s the 1:1 and feedback culture? Align with the Career Ladders framework so you know how roles and levels are defined.

Planning

Quick wins vs strategic bets. Pick 1–2 visible wins you can deliver in 30–60 days (e.g. clear a bottleneck, ship a small improvement). In parallel, define 1–2 strategic bets for 90 days and beyond. Don’t promise to fix everything at once.

30 / 60 / 90 goals. Write down what “good” looks like at each milestone. Share with your manager and key stakeholders so expectations stay aligned.

Execution

Early communication. Over-communicate intent: what you’re learning, what you’re not changing yet, and when you’ll come back with a plan. Reduces anxiety and rumor.

First all-hands. Use it to introduce yourself, your approach, and your first 90 days focus. Leave time for questions. Repeat key messages in writing.

1:1 rhythm. Start 1:1s with direct reports and key peers in the first two weeks. Listen more than you talk. Ask what they’d fix first if they had the authority.

What to avoid

  • Making big org or tech decisions before you understand context.
  • Criticizing the previous regime; focus on the future.
  • Skipping stakeholder alignment; execs and peers need to hear your plan from you.
  • Letting “listening mode” drag on past 60 days without signaling priorities.

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