How to Onboard Your
First 5 Hires
Bad onboarding is one of the most expensive mistakes an early-stage founder makes. It costs you months of ramp time, destroys the confidence of great people, and creates a cultural template that’s hard to undo. Here’s how to do it right from day one.
- Why onboarding matters more at 5 people than at 50
- The week before they start
- Day one: what actually matters
- The 30-60-90 framework
- The first 1:1 — what to cover
- How to know if onboarding is working
- The onboarding doc every startup should have
Why Onboarding Matters More at 5 People Than at 50
At 50 people, a bad onboarding experience is a problem. At 5 people, it’s a culture-defining event.
Your first 5 hires don’t just join a company — they help build it. How you onboard them tells them everything about how you treat people, how you communicate, and whether the company they’re joining matches the one they were sold in the interview process.
They also become the standard. How you onboard hire number 3 becomes the template that hire number 3 uses when they eventually onboard hire number 8. Get it right early.
The goal of onboarding is not to transfer information. It’s to make someone feel capable and confident in their role as fast as possible.
The Week Before They Start
Most founders do nothing before day one. This is a missed opportunity.
Send a welcome message 3 days before they start. Not a formal email — a personal note. What you’re looking forward to working on with them. One thing you want them to know before they walk in.
Set up everything they need before day one. Laptop, accounts, tools, Slack, email. Nothing signals disorganisation like spending the first morning waiting for access to be set up.
Share context — a brief document covering what you’re building, where you are, what’s working, what’s not, and what you’re trying to do in the next 90 days. This is not a pitch deck. It’s honest context from a founder to someone who has joined their team.
“I have a new [role] starting on [date]. Write a short personal welcome message I can send 3 days before they start. It should: feel warm and personal, mention one specific thing I’m excited to work on with them, give them a sense of what their first week will look like, and include one thing I want them to know about how we work. Not formal — sound like a founder who’s genuinely glad they’re joining.”
Day One: What Actually Matters
Day one has one job: make them feel like they made the right decision.
Don’t schedule a full day of information sessions. Schedule one conversation with you — 60-90 minutes — where you cover: the context document you sent, the 3 most important things they need to understand about how decisions get made here, and what success looks like in their role in the first 90 days.
Then give them time to absorb. Day one information overload is real and counterproductive. The best thing you can do after the morning session is give them a meaningful first task — something small they can complete and feel good about by end of day.
The 30-60-90 Framework
Every new hire should know exactly what success looks like at 30, 60, and 90 days. Not a vague “get up to speed” — specific, observable outcomes.
Day 30: Understanding. They’ve met every key stakeholder, understand the product and the customer deeply, and can explain the company’s strategy in their own words.
Day 60: Contributing. They’ve shipped their first meaningful piece of work, identified one thing they’d change about how the team operates, and established a working rhythm with their closest collaborators.
Day 90: Owning. They’re operating independently in their core responsibilities, have surfaced at least one insight the team didn’t have before they arrived, and have a clear plan for the next quarter.
“I just hired a [role] at my [stage] startup. Create a 30-60-90 day onboarding plan that sets clear milestones for each phase. For each milestone: describe what success looks like in observable terms, identify the most important relationships they need to build, and list 2-3 specific tasks or projects that would demonstrate they’re on track. Be specific to a [role] joining an early-stage company.”
The First 1:1 — What to Cover
Schedule a 1:1 at the end of week one. Not a check-in — a real conversation. Ask these questions:
“What’s surprised you about this place — positively or negatively?” The honest answer tells you more than any structured feedback form.
“What do you need from me to do your best work?” Ask this early and you’ll get the real answer. Ask it six months later and you’ll get a polite non-answer.
“What do you wish you’d known before you started?” This question improves your onboarding process for every person who comes after them.
The Onboarding Doc Every Startup Should Have
One document, shared with every new hire on day one. Covers: what you’re building and why, your current strategy and priorities, how decisions get made, how you communicate internally, what good looks like in your culture, and the things that will get someone in trouble here that aren’t written anywhere else.
The last item is the most important. Every company has unwritten rules. Making them explicit is a kindness to new hires and a forcing function for the founders to examine whether those rules are actually healthy.
“I need to write a new hire onboarding document for my startup. Here’s the context: [describe your company, stage, team size, what you’re building]. Write a 2-page onboarding document that covers: what we’re building and why it matters, where we are right now, how we make decisions, how we communicate, what good looks like in our culture, and 3-5 unwritten rules that every new hire should know. Be direct and honest — this is an internal document, not marketing.”
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