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Stepan K.
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Stepan K.

Expert Mobile App Developer | React Native, AI, Node.js, RevenueCat

πŸ† Senior AI Mobile Full-Stack developer. Trusted by startups and global brands like IMAX. 🌟 Only 5-star verified reviews. πŸ‡ͺπŸ‡Ί European quality. πŸ§‘πŸ»β€πŸ’» Founder of VibeMeal - AI calorie tracking app ($50K MRR) Hello, I'm Stepan, a Senior Full-Stack developer. With over 6 years of experience in the web and mobile development industry, and AI-driven development industry, I have personally led 40+ successful projects, delivering exceptional results for my clients. What clients say about me: 🌟 "Stepan was great. He worked on the form in a timely manner, and was very patient when I couldn't get back to him quickly. The communication was great, his work is excellent, and I will most definitely work with him in the future again." 🌟 "Wonderful person. Focused and dedicated to tasks." 🌟 "Stepan is very responsible developer. Not only he did the job before the deadline, he also did even more work to simplify the upcoming app integrations, thank you. Highly recommended!" So far I’ve: - Worked with clients in a wide diversity of domains: healthcare, catering delivery, travel agency services, education, sales and marketing, vehicles, metals & mining. - Collaborated with customers 🌏 worldwide: Europe (United Kingdom, Germany, Belgium, Croatia, Slovakia, Estonia, France, Norway), USA, and Australia. - Worked with inspired πŸš€startups & enterprise companies. My services: - Mobile App Development - Develop Website - Build Mobile Application - MVP development - Build Marketplace - Develop Chrome extension - Hybrid Development - Build Prototype Here are my core skills: 🎯 Frontend: - React - TypeScript / JavaScript - Next / Gatsby / SPA - Web3 - REST / GraphQL - Cypress Backend: - Express / Nest - AWS Serverless - MongoDB / DynamoDB - MySQL, PostgreSQL - Firebase - AI integration (OpenAI, LangChain, TensorFlow) Mobile development: - React Native - Flutter - Firebase Infrastructure: - AWS - GCP - Terraform - Docker - CI/CD AI & Automation: - AI chatbots & assistants - AI-driven automation for workflows - Computer vision & NLP features Web3: - Truffle - Web3 - Solidity VR/AR: - Unity Reach out to me today, and let's establish a long-lasting and fruitful collaboration. 🀝 Don't hesitate to get in touch right away! βœ‰οΈ Keywords to find me: Mobile App Development, Claude Code, Cursor, Smartphone, Android, Android App Development, Dart, Expo, Firebase, Firetime Realtime Database, Flutter, FlutterFlow, Hybrid App Development, In-app Purchases, iOS, iOS Development, Java, Kotlin, Native App Development, Push Notifications, React Native, Swift, User Authentication, UX Design, Node.js, AI Mobile App Development, AI Chatbots, AI Automation, AI Assistant, OpenAI, ChatGPT

πŸ‡ΈπŸ‡°Bratislava, Slovakia$35/hr100% JSS5.00 (23)Since Apr 2019
GlobeUpwork
MRR
$9,379
🌍#1,542/363K
πŸ‡ΈπŸ‡°#1/274
Recent Earnings
$56,277
🌍#1,542/363K
πŸ‡ΈπŸ‡°#1/274
Total Earnings
$192K
🌍#15.2K/363K
πŸ‡ΈπŸ‡°#21/274
Avg. Per Project
$5,056
🌍#32.0K/363K
πŸ‡ΈπŸ‡°#34/274
Recent Projects
11
3f8h
🌍#73.7K/363K
πŸ‡ΈπŸ‡°#57/274
Total Projects
38
19f19h
🌍#73.7K/363K
πŸ‡ΈπŸ‡°#57/274
MRR Performance Over Time
$50k$25k$0
6 mo ago3 mo agoNow
Coming SoonGathering historical data
World Skill Rankings
of 432
#9
Expo.ioTop 2%
#11iPad App Development
#16Smartphone
#24Mobile UI Design
#31Mobile App Design
#33iOS
#40User Interface Design
#41Android
#42User Experience Design
#44Firebase
#52Android App Development
#65iOS Development
#83Figma
#102React Native
#103Mobile App Development
#133TypeScript
#157Web Development
#212Node.js
#252React
#290JavaScript
πŸ‡ΈπŸ‡°Slovakia Skill Rankings
of 4
#1
Mobile App DevelopmentTop <0.01%
#1iOS Development
#1Android App Development
#1iPad App Development
#1iOS
#1React Native
#1Android
#1Mobile App Design
#1JavaScript
#1User Interface Design
#1Node.js
#1React
#1Firebase
#1Expo.io
#1TypeScript
#1Web Development
#1Mobile UI Design
#1Smartphone
#1Figma
#1User Experience Design
Stepan K. β€” #1 in Slovakia | UpworkMRR