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Dmitry Timofeev
@dmitrytimofe306
React Native and NextJS Developer, I fix, finish and publish apps
Estland
Engels, Russisch
Over mij
I'm a React Native and full-stack TypeScript developer from Estonia, freelancing since 2021. Since 2024 I've been the lead developer of Cocopine, a parental control app for YouTube that runs at 99.9% crash-free with 4.5 stars on the App Store and Google Play.
Most of my work is fixing apps that got stuck: crashes, broken builds, store rejections, or an AI-built app that works in the demo but breaks for real users.
Send me a short description of the problem. I'll tell you what's wrong and what it costs before you order.
Skills
Dmitry Timofeev
offline •
Gemiddelde reactietijd: 6 uur
Bekijk mijn diensten
Troubleshooting en verbeteringen
I will fix your lovable or bolt app with supabase
Management van mobiele store
I will fix app store rejection for react native
Portfolio
Werkervaring
Lead Full-Stack Developer
Cocopine • Fulltime
Oct 2024 - Present • 2 yrs 1 mo
Lead developer of a parental control app for YouTube on iOS and Android. I took it over a year after launch while it kept failing technically, and made it stable: 99.9% crash-free, 4.5 stars, a release every month, video playback failures down to 2-3%. I own the React Native (Expo) app with parent and child modes and the Node.js backend with Fastify, PostgreSQL, Redis and BullMQ on AWS, plus tests, CI/CD, monitoring and the App Store and Google Play releases with EAS.
Full-Stack Developer
Major Source • ZZP
Mar 2023 - Present • 3 yrs 8 mos
My own software company in Estonia, through which I take client projects. Sole developer of a client's AI Chrome extension for recruiters since November 2025, preparing for launch. Built junico, a cosmetics e-commerce store, end to end in Next.js and Node.js with MongoDB: catalog, cart, checkout and admin dashboard. Built StoneDecor, a website and product catalog for an Estonian stone manufacturer with an admin panel and lead notifications in Telegram. Built the Sparly marketing website in Next.js in English and Swedish.
React Native Developer
MVP Lab • Fulltime
Aug 2023 - Nov 2024 • 1 yr 3 mos
Worked with 5+ startup clients across the full cycle, mostly as the only engineer. Took over a React Native app live on the App Store and Google Play at a mature stage with heavy technical debt, and brought its performance and unfinished features back under control. Also built React Native apps and Next.js platforms on Firebase and Supabase, including a multi-tenant platform for US nursing homes.
