In this episode of The Inventive Journey, Devin Miller interviews Sergey Korolev about a founder path that refuses to stay in one lane. Sergey’s story begins with robotics engineering at Bauman Technical University in Moscow, includes competitive water polo, moves into enterprise automation, and then grows into Just Food, a meal kit and delivery business that reached roughly $10 million in annual revenue over about six years.

Just Food was not a cute side project with a logo and three inspirational quotes taped to a wall. It was a real operating business with logistics, customer expectations, influencer marketing, engineering demands, and the daily joy of discovering that food delivery is simple only when someone else is doing it. Sergey and his team grew the company in Russia’s health and fitness market, learning how to build systems, manage pressure, and turn a real customer need into a scaling company.

Then the environment changed. Sergey explains how geopolitical constraints made it difficult to build the kind of global company he wanted from Russia. He eventually moved to Portugal and stepped away from running the food tech company. That transition forced a bigger founder question: after building one successful company, what comes next?

Sergey did not want to simply recreate the same model in a different wrapper. He wanted a company that could be global from the beginning, a category with meaningful technical depth, and an engineering partner who could bring serious domain expertise. That search led him into mobile application security and to the creation of Oversecured.

Oversecured helps enterprises find vulnerabilities in mobile applications. The company focuses on a problem that is becoming harder for businesses to ignore. Mobile apps are not just tiny brand brochures anymore. They handle authentication, payments, private data, location, workflows, and connections to backend systems. When mobile security is treated as an afterthought, the risks can become very real, very fast, and very unpleasant for everyone except the attacker.

In the conversation, Sergey also shares one of his toughest founder lessons: underestimating emotions in negotiations. Founders often want to believe that business conflict is rational because there are contracts, spreadsheets, and people using phrases like “alignment.” But negotiations are full of pride, fear, trust, control, timing, and incentives. Ignoring the emotional side can turn a business disagreement into an expensive lesson with legal paperwork attached.

Sergey’s advice to founders is memorable: act more and think less. The point is not to be careless. The point is to stop mistaking private overthinking for progress. Startups learn by testing, selling, shipping, listening, and adapting. A founder who takes action creates feedback. A founder who only plans creates prettier uncertainty.

This episode is especially useful for startup founders and small business owners thinking about pivots, market constraints, cofounder selection, enterprise sales, or how to build after a previous chapter ends. Sergey’s journey shows that a pivot is not automatically a failure. Sometimes it is the most honest response to what the market, the world, and your own ambition are telling you.

Listen for a conversation about reinvention, global company-building, cybersecurity, zero-day vulnerabilities, negotiation mistakes, and why the founder path often looks obvious only after you have already survived it.

You will also hear how Sergey approached the zero-to-one stage differently the second time around. His criteria were clearer: build with the right technical partner, avoid regional limitations, and choose a market where deep expertise could become a durable advantage. That is useful perspective for any founder who has outgrown one chapter but has not yet named the next one.

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