John Kim on product development
From John Kim Reveals #1 Mistake 90% of Startups Make · · Kurve - The App Growth Agency
“People who are good with one thing tend to overlook the others so for instance if you're an engineer if you love building great products you will be naturally biased towards spending more time on product so instead of spending more time with customer you're like 'Oh you think you have an idea about customer you try to go and build it before even talking to customers or validating from customer.'”
On , John Kim, Chief Legal Officer, Chief Administrative Officer & Corporate Secretary at Cognizant Technology Solutions Corp, spoke about product development during John Kim Reveals #1 Mistake 90% of Startups Make on Kurve - The App Growth Agency.
About John Kim
In a 2025 clip, John Kim stated that the most common mistake startups make is failing to talk to enough customers. He said he is surprised when founders report speaking to only three to five customers per week, arguing they should be speaking to that many per day. Kim also cautioned that founders often over-index on their strengths—engineers may focus too much on product development, while outward-facing founders may spend excessive time networking—and advised that nothing else matters until a strong product-market fit is found. In a 2018 appearance, Kim described working for a Fortune 500 company as "one of the most dangerous career things you can do," arguing that such companies are not nimble and that C-level executives lack the courage to resist investor pressure, leading to layoffs. However, he also said he would hesitate to recommend that people leave a W-2 job where they are still learning, noting that some may later find their skills are inadequate. Kim expressed support for 1099 work, stating it can provide greater job security through diversified income streams.