I'm a Senior Mobile App Developer with 5+ years of experience building production applications that people actually use at scale. I don't just write code — I ship products.
My solo-built streaming app reached 600,000+ active users. I've delivered 50+ production apps for clients across 6 countries. I develop and maintain open-source packages that fill critical gaps in the Flutter/Dart ecosystem — one of which now lives under the official Google Firebase publisher.
Currently at BeInMedia (Nmo AI), building an AI-powered fitness app with Bluetooth Low Energy health-device sync and Google Gemini AI coaching.
📌 Full portfolio with in-depth case studies: ottomandeveloper.github.io/portfolio
I build tools that fill the gaps other developers complain about.
| Package | What It Does | Status |
|---|---|---|
| vision_ai | On-device hand gesture recognition + facial emotion detection for Flutter — 13 gestures, 7 emotions, 21 hand landmarks, face contours, blink/nod detection, attention scoring. MediaPipe + ML Kit + TFLite, 25-30 FPS, zero cloud | New · Android + iOS |
| vision_ai_flutter | Pre-built UI overlay widgets for vision_ai — hand skeleton painter, face contour mesh, gesture/emotion labels, configurable styles | New · Companion package |
| newpipeextractor_dart | Flutter plugin wrapping NewPipe Extractor — extract YouTube (+ SoundCloud, Bandcamp, PeerTube, media.ccc.de) video info, streams, subtitles, comments, channels, playlists, search, trending & subscriptions. No API key required | Active · v2.0.0 · GPL-3.0 |
| firebase_admin_sdk | Firebase Admin SDK for Dart — Firestore, Auth, FCM, Storage | Google's Dart & Flutter team reached out to take ownership of this package as the home for their official Firebase Admin SDK. Transferred to Google's official Firebase publisher — credited as original author |
| firebase_cloud_messaging_dart | Send FCM push notifications directly from Dart — zero backend needed | Active · 17 likes · 371+ downloads |
| charts_flutter_maintained | Community-maintained fork of Google's abandoned charts library | Active · Keeping legacy apps alive |
| tanquery | TanStack Query ported to Dart — automatic caching, stale-while-revalidate, background refetching, mutations, infinite queries. Pure Dart, no Flutter dependency | Active · v0.8.0 |
| tanquery_flutter | Flutter adapter for tanquery — QueryBuilder, MutationBuilder, InfiniteQueryBuilder widget builders |
Active · v0.8.0 |
| tanquery_devtools | Visual cache inspector overlay for tanquery — real-time query status, mutation log, cache actions | Active · v0.8.0 |
A streaming platform I built solo from scratch — zero team, zero budget.
| Metric | Result |
|---|---|
| Active Users | 600,000+ |
| Play Store Ranking | #1 in category for 5 consecutive months |
| Revenue | $20,000+ (ads + subscriptions) |
| Markets | Pakistan, India, Saudi Arabia |
| Team Size | 1 (me) |
Built the entire product end-to-end: streaming architecture, content delivery, ad integration, subscription loops, and Play Store deployment. This wasn't a client project — I identified the market gap, built the product, launched it, and scaled it independently.
Stack: Flutter, Firebase, REST APIs, AdMob
| Period | Role | Company | What I Did |
|---|---|---|---|
| Jul 2024 – Now | Senior Mobile App Developer | BeInMedia (Nmo AI) | AI-powered fitness app — BLE health device sync, Gemini AI coaching, cross-platform architecture |
| Nov 2022 – May 2023 | Senior Mobile Software Engineer | SD Cold Logistics & YouShopper | Built 3 separate apps (Customer, Seller, Delivery) — all live on Play Store. Zero-downtime backend migration |
| Sep 2021 – Mar 2023 | Senior Flutter Developer | Fulfil Supply Chain | Cross-border e-commerce — OpenCart API, real-time inventory sync across countries |
| May 2022 – Oct 2022 | Senior Flutter Developer | HomyKSA | Home services marketplace for Saudi Arabia — real-time order matching, payments, worker management |
| Nov 2020 – Now | Senior Mobile App Developer | Ottoman Coder (Freelance) | 50+ production apps for clients in Pakistan, India, Saudi Arabia, Australia, Thailand, Laos |
Languages Dart · Swift · Kotlin · PHP · JavaScript · Java · SQL
Frameworks Flutter (Android, iOS, Web, Desktop) · Laravel · Node.js
State Mgmt BLoC / Cubit · GetX · Provider · ValueNotifier
Backend Firebase · Supabase · PostgreSQL · MySQL · Hive · Isar · SQLite
APIs REST · FCM HTTP v1 · OpenCart · YouTube V3 · Google Maps
Hardware Bluetooth Low Energy (BLE) · Health Device Sync
AI/ML Gemini AI · MediaPipe · Google ML Kit · TFLite · On-Device Inference
Vision Hand Gesture Recognition · Facial Emotion Detection · Face Contours
Tools Figma · Postman · Google Cloud · Git · Bitbucket
🧬 LifeLink — Wellness & Crisis Intervention
Problem: Give people at risk — and those supporting them — one calm, always-available place that pairs real crisis resources with the daily self-tracking that surfaces warning signs early.
Solution: A Canada-focused crisis-support app that combines a province-aware directory of crisis lines (988, Hope for Wellness, BC networks) with daily sleep / diet / stressor / journal tracking visualised in charts, plus AI-generated supportive poetry via Google Gemini Pro — guard-railed to fail safe so a vulnerable user never sees a harmful response. Stays usable offline via HydratedBloc.
Stack: Flutter · BLoC · Google Gemini Pro · Firebase · fl_chart · GoRouter Links: Play Store · Test APK
🍺 AlcoPass — Connected Breathalyzer Station (BLE Hardware)
Problem: Turn a physical breathalyzer — the AlcoPass C1 — into a self-test station for venues: pair over Bluetooth, walk the user through a real breath test, and produce a blood-alcohol reading you can actually trust before they decide to drive.
Solution: Built around the C1 device over universal_ble — filtering so only AlcoPass hardware ever pairs, driving the warm-up → blow → analyze state machine, and parsing the C1's raw 16-byte frames into g/L of blood and mg/L of exhaled air against the legal limit. The estimate is refined by age, weight, sex, licence class and time since the last drink; every blow logs to Firestore, and the UI is localised in 5 languages (FR / EN / DE / ES / IT).
Stack: Flutter · BLoC · universal_ble (AlcoPass C1) · Firebase · easy_localization Client: AlcoPass · France
📺 UDownload — Open-Source YouTube Browser & Downloader
Problem: Build a full YouTube client + downloader — search, channels, playlists, comments, trending, and downloads — with no official API key and no backend.
Solution: Open-source Flutter app powered by my own newpipeextractor_dart plugin (NewPipe Extractor). Native ExoPlayer playback, stateless token-based infinite pagination across every feed, in-app reCAPTCHA handling, keep-screen-awake, and a modern dual-theme UI. Open-sourced under GPL-3.0.
Stack: Flutter · BLoC/Cubit · newpipeextractor_dart (NewPipe Extractor) · Native ExoPlayer · OneSignal Links: GitHub · Test APK
💰 YT Master — YouTube Services Marketplace
Problem: Managing a dual-sided marketplace with complex coin-based monetization and real-time notification systems.
Solution: Built a full coin ecosystem with dynamic theme switching, YouTube V3 API integration, and OneSignal for engagement.
Stack: Flutter · Provider · YouTube V3 API · OneSignal · Firebase Links: Test APK
🤝 Social Grouper & Scam Finder
Problem: Provide a safe community platform for joining social groups while actively identifying scammers.
Solution: Community-driven reporting system with intuitive animations and robust backend validation.
Stack: Flutter · BLoC · Firebase · AdMob/AppLovin Links: Test APK
📥 Status Saver & Multi-Downloader
Problem: Save WhatsApp & WhatsApp Business statuses and grab videos by link — while staying Play-Store compliant on modern Android's scoped storage.
Solution: Reads statuses through Android's Storage Access Framework (a native Kotlin SAF handler) for Android 11+ compliance, plus a paste-URL video downloader; thumbnails are generated off the UI thread with Dart Isolates.
Stack: Flutter · BLoC · Android SAF (native Kotlin) · Dart Isolates · Firebase Links: Releases
🧘 ICare — Meditation & Inner Calm
Problem: Build a private, judgement-free wellness space for a psychologist's clients — where no one can see someone's inner state, not even from their unlocked phone.
Solution: A self-care suite — meditation music, a guided Breathe exercise, an emoji mood tracker, diary, hobby timer and voice memos. Privacy-first: a "don't use your real name" signup and a fingerprint/biometric lock (local_auth) at the door. Each feature is its own GetX binding, loaded only when opened.
Stack: Flutter · GetX · Firebase (Auth/Firestore) · local_auth · just_audio + flutter_sound Links: Test APK
🚚 CourierGo — Multi-Vendor Logistics
Problem: Synchronizing stock orders across multiple countries using legacy OpenCart APIs on mobile.
Solution: Real-time tracking and management system with GetX for responsive state management across cross-border transactions.
Stack: Flutter · GetX · OpenCart API · Firebase Messaging Links: Test APK
🧾 Bill Checker — Utility Management
Problem: Put every Pakistani utility bill-inquiry portal — electricity (WAPDA), gas, phone and water — behind one app so people stop hunting for each provider's website.
Solution: Tabs for every regional provider (LESCO, FESCO, SSGC, SNGPL, KE…); tapping one opens that provider's official bill-inquiry portal in an in-app WebView. Dual-theme, BLoC state management.
Stack: Flutter · BLoC · webview_flutter · Firebase · AdMob/AppLovin Links: Test APK
Projects built with Flutter Web — showcasing cross-platform compatibility, web-optimized performance, and zero-dependency animations.
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A scroll-driven, single-page trip through the entire history of the cosmos, from the Big Bang to today, across nine hand-painted eras and a final developer reveal. Every scene is drawn in pure Dart with 30+
Stack: Flutter 3.44 · Provider · Google Fonts · url_launcher
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A showcase project demonstrating Flutter web capabilities: scroll-triggered reveal animations, glassmorphism nav bar, animated counters, staggered card entrances, FAQ accordion, responsive 3-breakpoint layouts — all built with zero external animation packages. Frame-batched scroll processing, centralized observer pattern,
Stack: Flutter 3.44 · Provider · Google Fonts · flutter_svg
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| App | Category | Link |
|---|---|---|
| 🧬 LifeLink | Crisis Intervention | Play Store |
| 🏦 YouShopper | Multi-Vendor E-Commerce | Play Store |
| 🛍️ YouShopper Seller | Seller Dashboard | Play Store |
| 📦 Homy هومي | Home Services (KSA) | Play Store |
| 🩸 Blood Donors | Emergency Locator | Play Store |
| 🫂 Group Joiner | Social Networking | Play Store |
| 💸 All Bill Checker | Utility Management | Play Store |
| 🏢 Nakoda Urban | Home Services (India) | Play Store |
Open to remote work, long-term contracts, and partnership opportunities.
If you need someone who ships — not someone who talks about shipping — let's connect.