Architecting mobile
experiences used by millions.
Mobile Technical Architect with 15+ years building iOS, Android, React Native and Flutter apps — from concept to App Store, at scale.
15 years of mobile.
Built to last.
I'm Ayush Kumar Sethi — a Mobile Technical Architect open to global opportunities, with a strong preference for remote-first and relocation-friendly roles worldwide.
My career spans the full mobile stack — from native iOS and Android to cross-platform React Native, Flutter and Capacitor. I've architected products used by 120 million people, led engineering teams, driven pre-sales engagements, and delivered across fintech, health tech, enterprise and consumer domains.
I actively leverage AI tools — Claude Code, ChatGPT, Codex, Cursor — as genuine productivity multipliers throughout the development lifecycle.
High-security VPN at global scale
Lead architect on Outline — open-source VPN deployed across iOS, Android and macOS for millions of users worldwide.
120M+ user e-greetings platform
Owned iOS architecture and delivery of 123Greetings — one of the world's largest e-greetings apps.
Connected car for Mahindra XUV400
Architected BlueSensePlus — exclusive EV companion app with Apple Watch integration.
AI-native development
Integrated AI-assisted workflows across teams, improving code review efficiency and accelerating delivery cycles.
Shipped. At scale.
Selected work across platforms, industries and continents.
Millions of users
Outline VPN
High-security open-source VPN built with Capacitor for unified cross-platform deployment across iOS, Android and macOS. Deployed globally by organisations requiring secure communications.
EdTech
NetSkill
Enterprise learning and development platform offering gamified, microlearning-based training. Built cross-platform mobile apps delivering personalised learning journeys at scale.
News & Media
Sanmarg Daily
Digital transformation of one of India's leading newspapers. Architected mobile platform for daily news delivery, e-paper, push notifications and offline reading across iOS and Android.
120M+ lifetime users
123Greetings
iOS lead on one of the world's largest e-greetings platforms. Owned architecture, feature delivery and App Store management. Integrated native advertising driving 30% uplift in ad revenue.
Mahindra XUV400
BlueSensePlus
Exclusive connected car application for the Mahindra XUV400 electric vehicle, featuring Apple Watch app integration for seamless vehicle control and monitoring.
Logistics
CameraMatics Fleet Management
Intelligent fleet risk management solution providing real-time visibility and control over business vehicles and drivers. Deployed across 500+ commercial vehicles.
Production-ready boilerplates. Free for everyone.
Open-source architecture templates built for real-world mobile development — clean, opinionated, and CI/CD-ready from day one.
ios-boilerplate
Production-ready iOS boilerplate with strict Clean Architecture, MVVM via @Observable, Swift 6 concurrency, Keychain security, and zero third-party dependencies.
View on GitHub →android-boilerplate
Production-ready Android boilerplate with Clean Architecture, Jetpack Compose UI, Kotlin Coroutines, and GitHub Actions CI/CD.
View on GitHub →rn-boilerplate
Production-ready React Native boilerplate with TypeScript, Zustand state management, Clean Architecture, and GitHub Actions CI/CD.
View on GitHub →flutter-boilerplate
Production-ready Flutter boilerplate with BLoC/Cubit state management, GoRouter navigation, Clean Architecture, and GitHub Actions CI/CD.
View on GitHub →Full-stack mobile expertise.
Deep across native and cross-platform, with architectural thinking at every layer.
iOS Development
Android Development
Cross-Platform
Architecture & Design
DevOps & CI/CD
AI-Assisted Development
Leadership & Delivery
Currently Exploring
Where I've built.
15 years across product companies, service firms and global clients.
Lead Mobile Developer
Architected and delivered Outline — a global high-security VPN across iOS, Android and macOS. Reduced build times by 20%, accelerated release cycles from monthly to 3-weekly. Leveraged Claude Code and ChatGPT throughout the lifecycle.
Technical Lead
Led architecture and delivery of 8+ simultaneous client mobile projects across iOS, Android and Flutter. Drove 5+ pre-sales engagements. Introduced AI-assisted development, improving code review efficiency by 25%.
Senior Software Engineer
Designed and delivered 20+ mobile applications across fintech, health tech and enterprise domains. Coached 10+ developers, establishing Git workflows that reduced PR review time by 40%.
Senior iOS Developer
Developed mobile applications owning the full lifecycle from requirements through to App Store deployment. Maintained clean codebases using Git best practices, ensuring code quality and maintainability.
Specialist — Technology
Led the development of 123Greetings — 120M+ lifetime users. Integrated native advertising driving a 30% uplift in app ad revenue within 3 months.
iOS Developer
Developed native iOS applications using Xcode and Objective-C across multiple client domains.
Flash AS3 Programmer
Created Flash apps using ActionScript 3.0, building foundational skills in cross-platform interactive development.
Let's build something great.
Available for senior mobile engineering and technical leadership roles worldwide. Remote-first, open to relocation.
aks5686@gmail.com
LinkedIn
+91 80177 76984