Oshri Cohen

Hey, I’m Oshri Cohen — Fractional CTO turned full-time tech whisperer.

I’ve spent the last 25 years immersed in engineering, and the last 15 leading brilliant (and sometimes delightfully chaotic) teams as a technical executive. From scrappy startups in healthtech and martech to 350-person research firms and Series C rocket ships, I’ve done it all: scaled orgs, refactored disasters, rescued investor confidence, and shipped things that didn’t catch fire on launch day. Wins all around.

30 companies in 4 years as a Fractional CTO? Yep. That’s not a typo. I embedded myself in each like a method actor in a startup biopic, just without the Oscar, though I’ve definitely made acceptance speeches to my dog. I solved mission-critical problems, rearchitected platforms, hired and levelled up teams, and created product strategies that actually made sense. And money.

At my core, I’m a systems thinker. Whether I’m rebuilding a microservices architecture, designing OKR cascades across dev teams, or explaining to a founder why their dev team is two PRs away from mutiny, I bring clarity, structure, and technical depth without the buzzword bingo.

Tech Stack? I could rattle off a list as long as your LinkedIn scroll: Python, Golang, React, gRPC, Kubernetes, Postgres, DDD, CQRS, EKS, Redis, you name it. But the truth is, I treat tech like tools, not religion. What matters more is why we’re building something and who we’re building it for. And how fast can we deploy without breaking production? (Or spirits.)

I help engineering orgs reach Elite DORA status in months, not years. Devs love working with me because I obsess over DX: If you can’t boot the stack with one command in under five minutes, we fix that. I also enforce quality through intelligent code review delegation and AI-assisted tooling. Let’s just say, if your platform smells like legacy spaghetti, I’ll turn it into clean lasagna.

If you’re building something great or something messy but full of potential, and you want a tech leader who can code, coach, scale, and simplify, let’s talk.

Co-Founder of leaf.page

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Staff Developer at PetalMD.

I was that kid who always asked "Why?", and while I never really outgrew that stage, I have refined the questions to "Why do this?", "How can we solve that problem?", and other appropriate specific questions. Then I learn about the context, system, people, and everything else relevant because we always need to ask the right questions before we can produce good answers. I always look, ask, and listen, first, and only then speak or act. When that last step comes, I will either answer those questions or help others to do so. Whether that means building SaaS platforms and ERP suites,  setting up databases, teaching courses and mentoring peers, optimizing engineering processes, identifying needs and doing other engineering stuff, or making a breakfasts kids want, it will always get done. Where there is no good solution, I go a layer deeper or broaden my perspective, follow what people really need, and then make stuff work.

As for why I do what I do, I just don't like seeing people needlessly overworked. I don't put up with makework or other such silliness and neither should anybody else, so I automate time-consuming tasks, improve processes, or build appropriate tools. Sometimes computers are overworked too, and I get impatient waiting for technology, so I improve scalability and maintainability of computing systems. Also money; that is another reason.

Anyways, I'm always happy to lend a hand so if you're stuck on anything I might be able to help handle, go ahead and ask.

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