Yaroslav D.

🚀 𝟑𝟎,𝟎𝟎𝟎+ hours of experience ✅ 𝗙𝗿𝗲𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 to start
📱 𝟔𝟎+ mobile projects ⭐️ 𝟐𝟱𝟎,𝟎𝟎𝟎+ downloads
🏆 5.0★ rating💸 over 𝟐,𝟎𝟎𝟎,𝟎𝟎𝟎+ in revenue generated

I'm a React Native developer and full stack developer with over 30,000 hours of experience across React Native Expo, React Native Firebase, and native React Native Android builds. I've delivered 60+ React Native mobile app development projects across 35+ industries, working as a React Native engineer who moves between React Native TypeScript codebases and React Native UI UX design, with React Native animation built in wherever it makes the product feel more native.

⚡ A marketplace client came to me with just an idea, and I delivered a full React Native mobile app from scratch — Node.js and MongoDB backend, Redux for state, and Firebase for auth and push notifications. I launched it on both the App Store and Google Play, then worked directly with the founder on onboarding flows and referral incentives; within 6 months the app had scaled to 200,000+ customers, and it now processes over 8,000 transactions a week.

🔥 For Champstracker, a React Native full stack build, I handled Firebase authentication, in-app payments, custom React Native animation for the workout engine, and a Redux-managed state layer across 40+ screens. The app grew to 85,000+ active users, holds a 4.7★ rating across 12,000+ reviews, and now generates $40,000+ in monthly recurring revenue, up from $0 at launch 14 months earlier.

🚀 Catwalk app needed a React Native developer who could move fast, so I paired a React Native TypeScript front-end with a Node.js and MongoDB backend and shipped the MVP in 9 weeks flat. Within the first year the app passed 100,000+ downloads and the company went on to raise a $2.3M seed round with 3 full-time hires added in the following 6 months.

📈 For a logistics client, I rebuilt an aging tracking app as a React Native mobile app with Firebase-powered real-time updates, HTML5 and CSS front-end reporting screens, and a Bootstrap-based admin dashboard. Daily active users grew from 500 to 18,000+ within 6 months, support tickets dropped 45%, and average session length rose from 2 minutes to 7 minutes across 4 core screens.

💡 I also compared Flutter against React Native for a retail client migrating away from a 6-year-old jQuery and WordPress stack, and React Native won out on performance and long-term maintainability. Page load times fell 60%, the crash rate dropped from 4.2% to under 0.3%, and the store rating climbed from 3.8 to 4.6★ within 90 days across 2 app store listings.