Vladlen K.

I wrote react-native-tdlib, the React Native bridge to Telegram's TDLib. Telegram lists it in their own documentation. That is the layer I work in, Swift and Kotlin platform code and not only JavaScript. Which is why clients hire me for the parts that break there. Getting a production app through App Store review, and making subscriptions actually charge. Top Rated Plus, 100% Job Success, 896 hours. Three things clients hire me for most: STORE RELEASES Signed builds, store listings, App Store Connect and Play Console setup, review rejections, phased rollouts. If your app is written but stuck before launch, that is the part I do. NATIVE MODULES AND SDK BRIDGES I write native modules in Swift and Kotlin and bridge vendor SDKs into React Native. When the cross-platform layer runs out, I go down a level instead of working around it. TAKEOVER AND CODE REVIEW I read an existing React Native codebase and tell you plainly what state it is in: what is broken, what is risky, and what it will take to finish. Then I do the work. I also offer this as a fixed-scope audit with severity-ranked findings. Recent work includes a delivery platform rated 4.8 with 3,100+ App Store ratings and 1,650+ Google Play reviews across customer, courier and partner apps, and a consumer subscription product that grew 5x to 300k+ users across iOS, Android, Huawei AppGallery and Web. Stack - Mobile: React Native, Expo, Swift, Kotlin, native modules - Backend: Node.js, NestJS, Express, TypeScript, PostgreSQL - Payments: Stripe, RevenueCat, Apple In-App Purchases, Google Play Billing - Integrations: Firebase, AppsFlyer, OneSignal - AI: OpenAI, Anthropic, Mistral, Gemini - DevOps: Fastlane, GitHub Actions, GitLab CI/CD I test on real iPhones, iPads, Samsung, Xiaomi and Huawei devices. Open to long-term contracts, and to short well-defined work like a store release or a code review.