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First 90 Days as a CTO

The first ninety days set how people remember you, not because of what you build, but because of what you understand before you touch anything. Pick your situation, get a plan.

After Michael Watkins, The First 90 Days

Which situation are you walking into?

Michael Watkins calls these the STARS situations. Naming yours changes everything downstream, a turnaround rewards week-one action; a realignment punishes it.

Days 1–30

Learn, and earn the right to be heard

  • Get your success metrics from the CEO in writing
  • One-on-ones with every direct report and their reports
  • Understand the business: revenue, burn, the growth target
  • Sit in on a customer call; read a week of support tickets
  • Ship nothing structural, just learn the terrain

By day 30: A one-page diagnosis + a draft plan, and your first check-in with the boss.

Days 31–60

Turn observations into a plan

  • Join the on-call rotation; feel the real workflow
  • Baseline delivery metrics (deploy freq, lead time, change-fail, recovery)
  • Identify the two or three roles that unblock everything
  • Ship one small quick win, not a rewrite
  • Share observations weekly, without premature judgment

By day 60: A diagnosis + a technology roadmap the business can read.

Days 61–90

Execute, as systems, not heroics

  • Implement one or two durable improvements, properly
  • Publish the technology strategy and walk the team through it
  • Set the boring cadences: monthly Q&A, weekly update, ops review
  • Start closing the priority hires personally
  • Protect your own pace so you can lead, not just react

By day 90: Clarity, a roadmap people believe, and the quiet sense someone’s in control.

Watkins’ research puts a number on it: leaders who onboard deliberately reach the point of contributing more than they consume roughly 40% faster than those who wing it. The 90 days aren’t a probation period, they’re the highest-leverage time you’ll ever have in the role.

The 30/60/90 structure and the STARS situations are drawn from Michael D. Watkins, The First 90 Days (Harvard Business Review Press). This is an original interpretation for technology leaders, not a reproduction of the book.

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