Can a startup be built part-time, or does it require full-time founder commitment from early on?

Harry Stebbings · published Apr 5, 2023 · hedged

VCs commonly say they dislike founders who test an idea as a weekend side project, on the view that founders need to be all in.

19:01 Vcs dislike side project testing demanding full time commitment

Mike Salguero · published Apr 5, 2023

Once you take venture money you are on a train you cannot get off, and lifestyle design is no longer available to you.

A VC is responsible for other people's money and for driving a return, so demanding a founder quit their job and go full time is legitimate — he would want the same if he handed someone a million dollars.

19:19 Vc funding forecloses lifestyle design once taken

Johannes Reck · published Jun 23, 2025

You do have to be all in to build a company — you cannot do it on the side

Once the second iteration needed real supply signup and online marketing, part-time effort was impossible and they had to go full time on an unproven prototype

20:43 Full time commitment is required once real traction work begins

Paul Graham · published Nov 2005

Startup founders should work more than full-time, and at least one founder must make the company his full-time job.

Most startups are in competitive businesses.

source At least one founder must work full time and most startups require more than full time effort