The first 90 days: turning a new job into a strong second year
The habits you set in your first twelve weeks decide your reputation for years. They also decide whether your next resume has evidence in it.
Getting the offer is the end of the job search and the start of the part that actually compounds. Early impressions harden fast, and the notes you keep now become the bullets on the resume you write in two years.
Weeks 1–3: learn the map
- Meet everyone your work touches, including the people downstream of you.
- Ask each of them: what does good look like from where you sit, and what usually goes wrong?
- Write down every acronym, system and approval path in one private document.
- Resist proposing changes. You do not yet know why things are the way they are.
Weeks 4–8: pick one visible, low-risk win
Choose something small, clearly owned by you, and irritating to other people — a broken report, an undocumented process, a manual step you can automate. Finish it completely. A shipped small thing builds more trust than an ambitious half-finished one.
Early credibility comes from closing loops, not from having opinions.
Weeks 9–12: agree what success means
Book a conversation with your manager and get explicit answers: what should be true at six months, what would count as exceeding expectations, and how performance is actually assessed here. Write the answers down and send a short summary back — that email becomes your reference point at review time.
Keep a brag document from day one
- One dated line per notable thing you did, with the number attached while you still remember it.
- Save praise emails in a folder rather than trusting recall.
- Note scale as it changes: seats supported, volume handled, budget touched.
- Review it monthly — it takes five minutes and it is the difference between a vague resume and a specific one.
Protect your boundaries early
Whatever hours and responsiveness you demonstrate in month one become the expectation. Being reliable is not the same as being always available, and the distinction is far easier to set now than to renegotiate later.