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From: Poland

Location: Wroclaw

On Useme since 9 September 2026

About me

My name is Volodymyr Zakhovaiko. I run Dyvertex, a small software studio in Poland specializing in mobile applications and AI features.

I have 6 years of commercial experience and was the Tech Lead at a company with 50 developers. I have released 5 applications on the App Store and Google Play, including one with around 2000 DAU.

My main focus is mobile applications in React Native and Expo: native modules in Swift and Kotlin, EAS builds, store submission and review. On top of that, I build AI features inside the app: streaming chat resilient to poor connectivity, camera-based image recognition, voice, search across your own data, and server-side model calls instead of an API key shipped in the bundle. I also deliver web, backend, integrations, and CI/CD.

We have two products: a mobile app on the App Store and an open-source desktop application called Mermlaid.

We work on a fixed price and an agreed scope. If a project falls outside my specialization, I say so at the start.

Portfolio

Ariex

ariex.fit - an AI training app. React Native and Expo, Bun backend, PostgreSQL with Prisma, Firebase Auth, deployed on Railway. It generates a training plan from the user's goal, available days, and session length.

Portfolio item

Ariex

Ariex

ariex.fit - an AI training app. React Native and Expo, Bun backend, PostgreSQL with Prisma, Firebase Auth, deployed on Railway. It generates a training plan from the user's goal, available days, and session length.

Mermlaid

Mermlaid - a Mermaid diagram editor for macOS, on the Mac App Store, open source under MIT. Tauri, React, TypeScript and CodeMirror 6.

Portfolio item

Mermlaid

Mermlaid

Mermlaid - a Mermaid diagram editor for macOS, on the Mac App Store, open source under MIT. Tauri, React, TypeScript and CodeMirror 6.