Abhin S.

I build the mobile apps that can't fail: official Amazon Location Android SDKs, ONWARD Medical's ARC-EX (a first-of-its-kind FDA-cleared spinal cord stimulator), and Fibe, a fintech lending app with 10M+ downloads. I'm usually hired when a project involves more than standard app screens: real-time systems, BLE/IoT, AI, payments, hardware integrations, maps, regulated workflows, or complex architecture that needs senior ownership. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ▪ Android: Kotlin, Java, Jetpack Compose, MVVM, Clean Architecture ▪ iOS: Swift, SwiftUI, native SDKs, platform channels ▪ Cross-platform: Flutter and Kotlin Multiplatform (KMM) ▪ BLE, IoT & hardware: medical devices, robotics, wearables, connected products ▪ Real-time: WebRTC, Socket Programming, Twilio, video, low-latency chat ▪ Maps & location: geofencing, live tracking, routing, custom SDKs ▪ Fintech & payments: wallets, KYC, subscriptions, payment gateways ▪ AI features: streaming chat, character memory, LLM integrations, on-device ML ▪ App rescue: refactoring, crash fixing, performance tuning, architecture cleanup 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞 ① The app needs to scale: millions of users, peak traffic, complex state, performance-sensitive flows. ② The app cannot fail: medical, fintech, real-time, hardware, or business-critical workflows where reliability is non-negotiable. ③ The app is technically difficult: BLE devices, AI, native SDKs, WebRTC, payments, maps, or legacy code that needs expert handling. ④ The product needs senior ownership: architecture, technical decisions, tradeoffs, code quality, and delivery without heavy supervision. 𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤 ▪ I clarify the product goal, technical risks, and success criteria before writing code ▪ I break work into clear milestones, so progress is visible ▪ I share frequent updates and demo videos for major features ▪ I communicate tradeoffs directly instead of hiding problems ▪ I write production-grade code: clean architecture, reliable state management, testing, CI/CD readiness, maintainable structure With 10+ years and 25+ shipped apps (three with 1M+ users), I've worked across fintech, healthcare, AI, robotics, BLE/IoT, real-time communication, and developer SDKs, including public contributions to Amazon Location Service under the AWS Geospatial organization. If your mobile app is complex, high-value, scaling fast, connected to hardware, using AI, handling payments, or relying on real-time data, send me your goal, current stage, and biggest technical concern. I'll respond with a clear plan, a realistic timeline, and the safest way to move forward.