Anas Lakhani
Verified Expert in Engineering
Mobile App Developer
Karachi, Sindh, Pakistan
Toptal member since September 2, 2026
Anas is a mobile app developer with over 7 years of experience building Android, iOS, Flutter, and React Native apps for clients, including Zultec Private Limited and Aventle Private Limited. His primary expertise is in cross-platform development, API integration, and end-to-end product delivery for industries such as fintech, VoIP, OTT streaming, and healthcare. Anas shipped a VPN app with 100,000+ downloads and a VoIP system used by 1+ million active users.
Portfolio
Experience
- Android - 6 years
- Flutter - 6 years
- React Native - 6 years
- Swift - 6 years
- iOS - 6 years
- Dart - 6 years
- Java - 6 years
- Kotlin - 6 years
Work Experience
Mobile App Developer
Self-employed
- Designed and developed native and cross-platform apps (Android/Kotlin, iOS/Swift, Flutter, React Native) end to end, from technical scoping and architecture through App Store and Play Store release.
- Migrated a client app (TrackPal) off inaccessible AWS infrastructure onto Hostinger with zero data loss, then delivered a Figma-approved UI/UX redesign.
- Consulted for a non-technical investor client on a biotech catalyst tracking tool, running paid technical sessions and a structured 5-week training plan.
- Built and published Rotting, a Gen Z lifestyle app, to the App Store in 13 languages, driving organic downloads through a one-time purchase model.
- Developed CopVPN, a mobile VPN app that surpassed 100,000 downloads on Google Play and App Store, handling connection stability and ad monetization.
- Architected TempShield, a Node.js/Express/MongoDB SaaS API for disposable email detection, including API key auth, rate limiting, and bulk checking.
- Contributed to a VoIP/calling app serving 1+ million users, working within an established production codebase.
- Developed KCWX TV, a streaming/broadcast app for a television client, delivering cross-platform media playback functionality.
Mobile App Developer
Zultec
- Developed ZulAssets, an enterprise asset management app for tracking company equipment and inventory.
- Created ZulAttendance, an employee attendance and time-tracking app used across the organization.
- Delivered ZulAdmin, an internal admin and management app for company operations and reporting.
- Developed a Price Checker app for a Middle East superstore chain, giving in-store staff and customers real-time price lookups.
- Integrated RESTful APIs and 3rd-party SDKs to expand app functionality, and reduced crash rates through structured debugging and code optimization.
Mobile App Developer
AVENTLE Private
- Developed the app for Atlas Battery, a leading Pakistani battery manufacturer, using Java and Kotlin.
- Created the app for Keryana Superstore, a retail and grocery chain, covering catalog browsing and ordering.
- Implemented modern UI/UX practices that measurably improved customer satisfaction scores.
- Set up and automated parts of the build and deployment process using CI/CD pipelines.
Mobile App Developer
Phoenix Technologies
- Developed and maintained fintech applications for clients in the Middle East, handling account management and transaction flows.
- Optimized app performance, reducing load times and memory usage on lower-end devices.
- Wrote unit and integration tests to maintain high code quality and catch regressions early.
- Provided ongoing support and updates, keeping apps aligned with evolving client requirements.
Project History
KCWX Streaming
http://kcwx.com2nd Number: VoIP Business Telephony App
CopVPN
https://copvpn.com/Replaced a 1990s Accounting System with A Modern Offline App
Before: 2–5 minutes per invoice, no visibility into stock, manual Excel payroll.
After: under 1 minute per transaction, everything in one system.
This is the kind of hands-on, full-stack build I take on — tell me what's slowing your business down, and I'll show you what replacing it looks like.
Certifications
App Planning and Organization (Certification)
Adalo
Accelerate Development with Artificial Intelligence and Cursor
LinkedIn Learning
CompTIA A+ Core 1: CompTIA A Course with Practice
Udemy
Android App Developer
Al Fateem Academy
Skills
Libraries/APIs
Node.js, REST APIs, React, Google Location API, Stripe, PayPal API, YouTube API, Google AdSense, Retrofit, Apple Subscriptions, Stripe API, jQuery
Tools
Expo, Git, ExoPlayer, Claude Agent SDK, Xcode, Claude Code, Claude, AWS AppSync, Redux Toolkit, Android Studio, GitHub, iOS Simulator, Slack, Codex, Loom, GitHub Copilot, Crashlytics, Android Jetpack, Firebase Authentication, Firebase Test Lab, Postman, Figma, VPN, Bitbucket, Jira, Tizen SDK, Wix, Wix Studio, Figma to Wix, Figma to HTML, Amazon Fire TV App
Languages
Kotlin, Java, Swift, Dart, JavaScript, Python, TypeScript, BrightScript, GraphQL, XML, HTML, CSS, Google Apps Script
Frameworks
Flutter, React Native, Express.js, Django, StoreKit, Redux, SwiftUI, Swagger, Material UI, Angular, NestJS, Next.js
Paradigms
Mobile Development, REST, Testing, Database Design, UI Design, App Store Optimization (ASO), Model View ViewModel (MVVM), Automation, DevOps
Platforms
Android, iOS, Vercel, Android TV, tvOS, Twilio, Clerk, WordPress, Firebase, AWS IoT, Apple TV, RevenueCat, Visual Studio Code (VS Code), Heroku, Apple, Tizen, Amazon Web Services (AWS), FlutterFlow
Storage
PostgreSQL, MongoDB, Cloud Firestore, SQLite, RoomDB, JSON, Cloud Environments
Other
Mobile Apps, Google Play Store, Webhooks, App Store, Authentication, Android Development, API Integration, Supabase, Supabase Auth, OAuth, Mobile App Development, Marketplaces, Reviews, Security, Auditing, Full-stack Development, APIs, App Store and Google Play releases, React Native with Expo (EAS Build and Update), REST API integration, camera and photo capture, signature capture, Offline Data Synchronization, Video Players, Android TV Wrapper, OpenAI, Software Architecture, AI-generated Code, Mobile Architecture, Jetpack Compose, Roku, HIPAA, Authorization, Artificial Intelligence (AI), Large Language Models (LLMs), AirPlay, App Store Acceptance Process, Identity Verification, Web Development, Full-stack, AI Tools, Mobile UX, User Interface (UI), AI Chatbots, LLM Integration, Chatbots, RESTful API Design, JWT Authentication, Squarespace, Framer, CI/CD Pipelines, Google Play Console, Mapbox SDK, Debugging, App Store Connect, Enterprise, RFID, Barcode Reader, Barcode Scanners, QR Codes, Android GPS, Push Notifications, Android Emulators, Simulators, Analytics, Email Authentication, Passkey Authentication, User Authentication, Documentation, Websites, Landing Pages, In-app Purchase (IAP), Google Search Console, Microsoft Clarity, Firebase Hosting, Google AdMob, Apple Search Ads, Scraping, Freelancing, Native Mobile Apps, Cursor AI, Google Antigravity, Development, Version Control, Android App Development, iOS App Development, Subscriptions, Lazy Loading, Location Services and Maps, VPS, Pull Requests, Google Chat, Session Handling, Vercel Analytics, Dashboards, Admin Panels, Gmail, ElevenLabs Solutions, Apple TV UI, Remote Desktop Protocol (RDP), Amazon Store, tvOS UI, Kotlin/Native, Vite, GRID, Software, Financials, Invoices, Reports, GitHub Actions
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