Hey there, I'm Shafayeat Kabir โ an independent contractor helping startups and founders build, scale, and ship polished mobile products. Since 2017, Iโve been working remotely with small to mid-size startups, crafting apps that have reached millions of users and generated millions in revenue. ๐
I specialize in Fullstack Mobile App Development with a focus on:
- ๐ง React Native (Expo & Bare) โ 5+ years of experience
- โก Native Modules (Swift / Kotlin) โ when custom performance is needed
- โ๏ธ Backend โ NodeJS, Supabase, Express, FastAPI
- ๐ค AI-powered apps โ integrating OpenAI & Anthropic APIs
- ๐งฉ CI/CD & EAS, GraphQL, and complex animations
AI therapy app for OCD patients helping them manage obsession and compulsion through smart, personalized chat exercises.
- Worked as a Fullstack Developer with the co-founder
- Built AI streaming chat (like ChatGPT) using NodeJS, Express, OpenAI, and Anthropic APIs
- Frontend: React Native (Expo) + Supabase backend
- The app has gone viral on TikTok, reaching huge downloads and active users
๐ Website | App Store | Play Store
Supporting tool for Ubiquiti network admins to easily discover and manage devices โ a modern replacement for Ubiquitiโs discontinued Chrome extension.
- Built from scratch using React Native (Bare)
- Created a Turbo Module (Android) for fast network scanning
- The app supports HostiFi, a $10M/year Ubiquiti services company
๐ Website | App Store | Play Store
A European fintech startup offering expense management, salary-on-demand, AI-powered forecasting, and ERP automation.
- Joined as an early engineer handling all mobile app development
- Built with React Native, GraphQL, and EAS CI/CD
- Implemented complex animations and modern fintech UI
๐ Website
The companion app for the Skylight digital picture frame โ a $75M+ business with 2M+ downloads and no external investors.
- Early-stage contributor on the mobile team
- Features: photo/video upload, captions, remote device sync
๐ Website | App Store | Play Store
Social media scheduling platform used by thousands of creators and businesses.
- Work closely with the founder on mobile apps, bug fixes, and new features
- Updated legacy apps to the new React Native architecture
- Helped maintain apps contributing to $1M+ annual revenue
๐ Website
- Road Travellers โ Fullstack AWS-powered travel app
- Fit League โ Fantasy sports meets personal fitness
- Vome Volunteer โ Volunteer management system for Canadian nonprofits
๐ Website - Dozens of proof-of-concept meditation and breathing apps built for founders testing new product ideas
I love working directly with founders โ turning ideas into scalable products that users actually love.
Whether you need a full MVP, help scaling your existing app, or a React Native expert who understands product-market fit โ Iโm your guy.
- ๐ผ Reach out: sumithired@gmail.com
- ๐ฌ Ask me about anything โ Iโm happy to help
- ๐ Remote contractor, always open to new collaborations
โจ Building polished mobile apps that make an impact. โจ