Team, Co-founders & Legal

What should I look for in a co-founder, and what are red flags?

A starting point

Look for complementary skills, shared values on money and ambition, resilience under stress, and someone you can fight with and still respect. Red flags: won't commit full-time, dodges hard conversations about equity, or you've never actually built anything together. Skills can be learned; trust and work ethic can't.

Go deeper

Read

📖 Book
Paid Intermediate

The Founder's Dilemmas

From Princeton University Press by Noam Wasserman ~480 pages

Why we picked it

The definitive, data-driven book on early founding-team decisions, drawing on quantitative research covering nearly 10,000 founders. It replaces gut-feel folklore about co-founders and equity with evidence.

  • Founding with friends and family is often less stable, not more
  • Rushed 'quick and equal' equity splits frequently cause later conflict
  • The relationship, role, and reward decisions you make early shape whether the startup survives
Open press.princeton.edu →
📄 Article
Free Beginner

How to make your co-founder matching profile stand out

From YC Startup Library by Y Combinator Short read

Why we picked it

A concrete, tactical guide to presenting yourself well to potential co-founders, useful whether or not you use YC's platform. It clarifies what a great co-founder is actually evaluating.

  • Treat your profile as an elevator pitch for yourself
  • Show a specific accomplishment that reveals how you think
  • Be explicit about what you're looking for in a partner
Open ycombinator.com →
📄 Article
Free Beginner

Finding a Co-Founder (YC Startup Library)

From YC Startup Library by Y Combinator Curated essay + video collection

Why we picked it

A curated collection of YC's best primary guidance on how to find, evaluate, and test a co-founder, straight from the people who've seen thousands of founding teams. It's practical, opinionated, and free.

  • Prioritize people you've worked with over strangers
  • Run a paid trial project before making it official
  • Have the hard money and equity conversations early, not later
Open ycombinator.com →

People also ask

Do I actually need a co-founder, or can I go solo? You don't strictly need one, but the data says teams outlast solos: complementary skills, shared load, and someone to argue you out of bad calls al... Beginner 3 resources → Where do I actually find a co-founder if I don't already know one? Start with people you've already worked with, ex-colleagues and classmates beat strangers because you've seen them under pressure. If your network ... Beginner 2 resources → Should I co-found with a friend or family member? It's the most common path and one of the riskiest, familiarity is not the same as compatibility as business partners, and a bad split can cost you ... Intermediate 2 resources → How do I 'date' a potential co-founder before committing? Run a real trial: work on a scoped project together for a few weeks, ideally under a deadline, and pay attention to how they handle disagreement, d... Intermediate 3 resources → As a non-technical founder, how do I find a technical co-founder? Earn it: show up with customer proof, a clear plan, and ideally a scrappy no-code prototype so you're offering a partnership, not just an idea. Goo... Intermediate 3 resources → How should co-founders split equity fairly? For most early teams, split close to equal, an even split signals you see each other as true partners, and long-term contribution rarely matches wh... Beginner 3 resources →