# Abdelrahman Saed — Senior Mobile Engineer > Full CV / résumé of [Abdelrahman Saed](https://bnsaed.com) (binSaed · Arabic: عبدالرحمن سعيد), in markdown for easy reading by humans and AI systems. > Source of truth is the LaTeX CV at ; the PDF is at . > Usage: `ai-input=yes`, `ai-train=no` — attribute the author when quoting. - **Location:** Cairo, Egypt / Remote - **Phone:** [(+20) 1151034858](tel:+201151034858) - **Email:** - **Book a meeting:** - **Website:** - **LinkedIn:** - **YouTube:** - **GitHub:** - **Stack Overflow:** - **pub.dev:** ## Summary Senior Mobile Engineer with **7 years** shipping production iOS and Android apps to **5M+ users** — Flutter, Dart, BLoC / Cubit, Clean Architecture. Lead a 4-engineer squad at [iStoria](https://istoria.app/en/) (EdTech · English language learning), owning architecture, release governance, and delivery for a **50+ module** codebase. Shipped **350+ production releases**, reviewed **900+ PRs**, sustained a **99.9% crash-free rate**, and cut the release cycle from **4 weeks to 1**. ## Skills - **Mobile:** Flutter, Dart, Android, iOS, Custom Widgets, Animations, Responsive / Adaptive UI (iPad / Tablet / Landscape), Push Notifications (FCM), Deep Linking, Dark Mode / Theming, Home Screen Widgets (WidgetKit / Android App Widgets), Internationalization (i18n / RTL) - **Architecture & Data:** Clean Architecture, MVVM, BLoC, Cubit, Dependency Injection (DI), SOLID, PowerSync, Drift, Cloudflare R2, RevenueCat, Stripe, Paddle, AdMob, Appodeal - **Analytics & Engagement:** Adjust, CleverTap, PostHog, Clarity, Smartlook, Segment, WebEngage, MoEngage - **DevOps & Quality:** CI/CD, GitHub Actions, Codemagic, Trunk-based Development, Feature Flags, Firebase, Sentry, A/B Testing (Remote Config + GrowthBook), Performance Profiling, Crash Budgets, Unit / Widget Testing, Integration Testing (Maestro / Patrol / Marionette), PR Automation Bots, REST, GraphQL - **Leadership:** Architecture Ownership, Technical RFCs, Release Governance, Code Review, Mentoring ## Experience ### Lead Mobile Engineer — iStoria **Jun 2025 – Present** · [iStoria](https://istoria.app/en/) (EdTech · English Language Learning) · Riyadh, Saudi Arabia (Hybrid) *Stack: Flutter, Dart, BLoC, Cubit, PowerSync, Drift, Firebase, Sentry, GitHub Actions, GraphQL, REST* - Lead a 4-engineer iOS/Android squad — defining architecture direction, hiring bar, release governance, and quarterly roadmaps balancing feature velocity against tech debt for a user base of **5M+**. - Cut release cycle **75% (4 weeks → 1 week)** via trunk-based development, feature flags, and end-to-end CI/CD ownership (Codemagic, GitHub Actions, store releases). - Architected modular Flutter codebase with **50+ feature modules** and **140+ routes** applying SOLID and MVVM, documented via RFCs and enforced through CI quality gates and code review. - Led migration to [CleverTap](https://clevertap.com/) as the primary engagement platform, deprecating the previous stack with **zero data loss** for active accounts. - Hardened production security end-to-end: PII masked in logs and Sentry breadcrumbs, Android cleartext traffic disabled, and TLS certificate validation enforced across the app. - Cut QA turnaround by shipping internal tooling that builds APKs from any GitHub branch on demand, removing manual hand-offs from the test loop. ### Founding Mobile Engineer — iStoria **Jan 2022 – Jun 2025** · 3 yrs 6 mos · [iStoria](https://istoria.app/en/) (EdTech · English Language Learning) · Riyadh, Saudi Arabia (Hybrid) *Stack: Flutter, Dart, BLoC, Cubit, PowerSync, Drift, Codemagic, Firebase, Sentry, Adjust, REST, GraphQL* - Shipped flagship growth and AI features end-to-end: **Leaderboard** with social sharing, **AI Read-with** (Google speech recognition for guided reading), and **iStro AI chat companion** guiding users through chapter journeys. - Delivered **native Home Screen Widgets** on iOS (WidgetKit) and Android (App Widgets) for streak/daily-goal with FCM-driven updates, plus an **app-wide deep-link router** for auth, passwordless reset, marketing/coupon flows, challenges, and group invites. - Built the engagement and retention loop powering daily active usage: **Streak** system with day-off freeze and lost-streak restore, **Badges**, **Daily Goal** tracker, social **Challenges**, and a **Referral / Invite-Friends** program. - Achieved **99.9% crash-free rate** via crash budgets, systematic profiling, and CI quality gates blocking releases below stability thresholds. - Designed offline-first infrastructure (PowerSync + Drift) with selective per-key sync, conflict resolution, schema migration, and data integrity guarantees for millions of active accounts. - Drove a sustained performance program: **~35% cold-start reduction** (parallelized service providers, deferred post-first-frame SDKs, 35+ eager → lazy dependencies); **~60% rendering gains** (RepaintBoundary isolation, background JSON deserialization); **~20% memory reduction** (eliminating controller/stream leaks). - Architected and implemented an end-to-end cross-platform anti-piracy system integrating mobile tampering, jailbreak, and root detection with backend behavioral analysis to fingerprint compromised builds, automatically blocking **40,000+ abusive accounts** and reducing credential sharing through enforced 3-device account limits. - Expanded the supported matrix with app-wide **Dark Mode** (system-theme aware), **iPad / tablet / landscape adaptive UI**, and a **20-language i18n pipeline** (RTL incl. Arabic, Persian, Urdu) with locale-aware push notifications — all without forking the codebase. - Migrated mobile asset delivery from **AWS CloudFront to Cloudflare R2**, coordinating cutover across mobile, backend, and content pipelines with zero user-visible downtime. - Owned the monetization stack: [RevenueCat](https://www.revenuecat.com/) for native IAP across iOS/Android, a **custom webview checkout migrated from Paddle to Stripe** for fallback flows, **AdMob** ad serving (selected over Appodeal via A/B testing) with frequency capping and report-ad UX, and a promo / coupon engine driving paid-tier conversion. - Built internal DevEx tooling: a **PR-automation bot** (Jira-link injection, conflict labelling, auto-branch-update, stale-branch sweep, quality-team auto-check). - Maintained **8+ custom/forked Flutter packages**, contributing fixes upstream and owning long-term maintenance to meet production reliability requirements. - Integrated 4 marketing SDKs ([WebEngage](https://webengage.com/), [MoEngage](https://www.moengage.com/), [CleverTap](https://clevertap.com/), [Adjust](https://www.adjust.com/)) and built A/B testing infrastructure (Firebase Remote Config + [GrowthBook](https://www.growthbook.io/)), enabling data-driven feature rollouts and personalized engagement. - Maintained end-to-end stability across **mobile, backend, and cloud** as **the sole engineer for 1.5M users** during a team transition, while keeping release stability above thresholds. ### Mobile Engineer — Happy Trip **Oct 2020 – Jan 2022** · 1 yr 4 mos · [Happy Trip](https://www.linkedin.com/company/happytrip-ar) · Cairo, Egypt *Stack: Flutter, Dart, REST, Firebase* - Owned mobile delivery end-to-end across the Flutter team — task planning, code review gates, and sprint execution — setting the cadence for every release during the platform's first 14 months. - Architected a networking SDK with multi-layer caching, request queueing, auto-retry, token refresh, and background parsing, **cutting networking code by 60%**. - Designed and delivered the company's first mobile platform (consumer booking, internal HR, POS) in 14 months, enabling a full business pivot from traditional tourism to a tech-enabled service. ### Mobile Engineer (Part-time) — Tech Bay Portal **Feb 2021 – Oct 2021** · 9 mos · Tech Bay Portal · UAE (Remote) *Stack: Flutter, Dart, Socket.io, Google Maps* - Delivered real-time GPS tracking and live trip updates (Socket.io, Google Maps) for a ride-hailing platform across driver and rider apps. - Hardened the live-tracking pipeline against intermittent connectivity — buffered location updates locally and replayed on reconnect to keep trip state consistent on both sides. - Collaborated within a distributed multinational agile team, coordinating asynchronously across time zones alongside a concurrent full-time role. ### Mobile Engineer — FekraSoft Co **Aug 2019 – Sep 2020** · 1 yr 2 mos · [FekraSoft Co](https://www.linkedin.com/company/fekrasoft) · Cairo, Egypt *Stack: Flutter, Dart, RxDart, Firebase* - Led company-wide Flutter adoption as the first Flutter engineer, mentoring the Android team through advanced patterns (Streams, RxDart, DI) and authoring the shared coding standards the team still uses. - Shipped production e-commerce and document management apps with barcode scanning and file-level encryption. ## Projects - **[flutter_cached_pdfview](https://pub.dev/packages/flutter_cached_pdfview)** — Cross-platform Flutter PDF viewer (iOS/Android) with URL/asset/local caching, password-protected PDFs, and gesture-based zoom; **[134★ on GitHub](https://github.com/binSaed/flutter_cached_pdfview)**, **501 likes / 57k+ downloads on pub.dev**. - **[flutter_zoom_checker](https://pub.dev/packages/flutter_zoom_checker)** — iOS/Android display-zoom (UI scaling) detection plugin, working around a Flutter framework limitation ([issue #95421](https://github.com/flutter/flutter/issues/95421)). - **[dio_firebase_performance_plus](https://github.com/binSaed/dio_firebase_performance_plus)** — Dio interceptor streaming HTTP request metrics to Firebase Performance Monitoring. - **[clipboard_plus](https://pub.dev/packages/clipboard_plus)** — Flutter clipboard plugin with **silent content-type detection on iOS** (UIPasteboard) — detects URLs, text, and images without triggering the iOS paste permission dialog. - **[Stickerawy](https://play.google.com/store/apps/details?id=com.stickerawy.stickers)** — WhatsApp stickers Android app with **500K+ installs** on Google Play. - **Open-source contributions:** patches, fixes, and documentation to [flutter/website](https://github.com/flutter/website/pull/13639), [flutter/flutter](https://github.com/flutter/flutter/pull/190166), [flutter/flutter](https://github.com/flutter/flutter/pull/190163), [flutter/devtools](https://github.com/flutter/devtools/pull/9925), [growthbook-flutter](https://github.com/growthbook/growthbook-flutter/pull/143), [growthbook-flutter](https://github.com/growthbook/growthbook-flutter/pull/139), [youtube_explode_dart](https://github.com/Hexer10/youtube_explode_dart/pull/371), and [dio_smart_retry](https://github.com/rodion-m/dio_smart_retry/pull/36). ## Education **Bachelor of Management Information Systems** — Ain Shams Academy, Cairo, Egypt ## Languages - **Arabic:** Native - **English:** Professional