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How to choose a co-founder: the lesson from a startup I never launched

In 2014 I had an online-education idea before the market accelerated. We built a prototype but never launched. The main issue was not technology — it was founder alignment.

In 2014 I had an idea for an online-education platform called 2Know. We built a prototype, presented the project at a startup competition and then stopped. Two years later, similar models were becoming large companies. The hardest part was knowing that the opportunity had not failed — we had failed to organize ourselves around it.

I approached a close friend who was a doctor and lecturer. His domain expertise was exactly what the first medical courses needed. The idea interested both of us, but our practical commitment was different. He worked very long hours. I was operating two hospitality businesses. I wanted us to go all in; our calendars said otherwise.

Friendship is not founder compatibility

Trust is valuable, but a startup also requires compatible ambition, risk tolerance, pace and availability. People can respect each other and still be a poor founding team for a specific company.

Discuss commitment in observable terms

“I am committed” is too abstract. Ask how many hours each person will work, when full-time participation begins, what income they require, how long they can operate without salary and which personal constraints cannot move.

Make the role asymmetry explicit

Founders do not need identical roles. They need complementary responsibility with no invisible gap between them. Who owns product, sales, technology, operations and fundraising? Who makes the final call when the functions conflict?

Test the partnership before dividing equity

Run a real project together: customer interviews, a paid pilot or a four-week product sprint. Pressure reveals communication, pace and standards better than a theoretical discussion. Use vesting so long-term ownership follows long-term contribution.

Write down the difficult scenarios

  • What happens if one founder cannot go full time?
  • How are salaries and expenses approved?
  • Which decisions require unanimity?
  • How is deadlock resolved?
  • What happens to equity if somebody leaves?
  • Can a founder start another project?
  • How will poor performance be discussed?

Do not outsource conviction

I expected my partner to see the opportunity exactly as I saw it. That was unfair. A founder must arrive at conviction independently. Persuasion can start a project, but it rarely sustains years of uncertainty.

Founder takeaway: choose a co-founder for the company you are about to build, not only for the relationship you already have. Alignment is demonstrated through decisions, time and shared risk.
Adapted from an original Telegram post Telegram · 12 September 2023 →
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