# Obada Dallo — Complete Professional Portfolio & Engineering Dossier > Comprehensive, verified text representation of Obada Dallo's professional background, shipped products, technical capabilities, and engineering methodology. ================================================================================ 1. IDENTITY & PROFESSIONAL SUMMARY ================================================================================ - Full Name: Obada Dallo (عبادة دللو) - Primary Title: Product Engineer (مهندس منتجات برمجية) - Subtitle: 0-to-1 delivery across Web, Mobile & Desktop - Location: Chemnitz, Saxony, Germany - Work Authorization: Authorized to work in Germany - Languages: * Arabic: Native * English: Professional working proficiency (Technical & architectural documentation) * German: B1 (Vocational training completed in German) - Core Positioning: Self-taught product engineer building software independently with full lifecycle ownership (Product Judgment, Architecture, Coding Agents, Debugging, Testing, Release Engineering). ================================================================================ 2. THREE PILLARS OF ENGINEERING ================================================================================ 1. PRODUCT JUDGMENT: Understanding the real problem, narrowing scope to high-leverage features, and choosing what deserves to be built. 2. ENGINEERING & DELIVERY: Architecture, multi-platform integration, debugging, testing, platform constraints, release engineering, and ongoing iteration. 3. AI-ASSISTED EXECUTION: Using coding agents (Codex, Antigravity, Claude Code, Cursor) heavily to accelerate implementation, research, refactoring, and test generation while retaining human responsibility for architectural boundaries and verification. ================================================================================ 3. SHIPPED PRODUCTS & VERIFIED EVIDENCE ================================================================================ -------------------------------------------------------------------------------- PRODUCT 1: KeyFixer (Cross-Platform Typing Fixer) -------------------------------------------------------------------------------- - Live Distribution Channels (4): * Mac App Store: https://apps.apple.com/app/keyfixer/id6751283626 * Microsoft Store: https://apps.microsoft.com/detail/9n8wb6x0pfx3 * Chrome Web Store: https://chromewebstore.google.com/detail/keyfixer * Web Application: https://obadadallo.web.app/work/keyfixer/ - Time to Multi-Store Release: 27 days from initial commit to all live channels (Jul–Aug 2026). - Technology Stack: TypeScript, React, Rust, Tauri v2, Chrome Extension Manifest V3, Vitest, GitHub Actions. - Privacy & Local Processing: 100% deterministic local conversion engine with zero keystrokes sent over a network. - Release Engineering Incident & Store Approval Story: * Phase 1 (Guideline 2.1a): App Review reported an empty main window on launch. Root cause analysis revealed the packaging flow could invoke Tauri without first ensuring a fresh frontend build in gitignored dist-desktop. Built an automated release pipeline with preflight checks (index.html existence, non-empty bundles, zero localhost references, resource integrity, GitHub Actions smoke tests). * Phase 2 (Guideline 2.4.5): App Review flagged requesting macOS Accessibility permissions for non-assistive functionality. Rather than bypassing policy, re-architected Instant Fix around native macOS NSServices pasteboard flow with zero Accessibility permissions and dynamic ⌥⌘K shortcut routing. * Phase 3 (Store Release): Submitted StoreKit In-App Purchase review. Apple approved KeyFixer 1.3.1 for macOS & KeyFixer Pro Lifetime (Non-Consumable purchase, not a subscription). - Key Engineering Takeaway: "The useful part of the rejection was not simply fixing a bug; it forced the release process and macOS integration to become more deterministic, testable and platform-native." -------------------------------------------------------------------------------- PRODUCT 2: Eagle Test Germany (EdTech Citizenship Exam App) -------------------------------------------------------------------------------- - Live Distribution Channels: * Apple App Store: https://apps.apple.com/app/eagle-test-germany/id6798893231 * Google Play Store: https://play.google.com/store/apps/details?id=com.eagletest.germany * Web Platform: https://www.eagletestgermany.de/ar - Supported Languages (7): en, de, ar, tr, uk, ru, fa. - Technology Stack: Flutter, Dart, Riverpod, Hive local key-value persistence, RevenueCat in-app subscriptions. - Architecture: 100% offline-first architecture for all 300 federal and 10 state-specific questions with instant local search and zero backend dependency. -------------------------------------------------------------------------------- PRODUCT 3: B-Yadina — بإيدنا القرار (Civic Incident Reporting Platform) -------------------------------------------------------------------------------- - Live Production Platform: https://b-yadina-official.web.app/ - Verified August 2026 Metrics: * 1,308 visitors * 49 incident reports submitted * 34 currently under processing * 36 registered initiative members - Technology Stack: React, TypeScript, Leaflet geospatial mapping, Firebase Auth, Cloud Firestore, Tailwind CSS. - Security Architecture: Role-based Firestore Security Rules enforcing separate permissions for anonymous reporters, registered members, and municipal dispatchers. ================================================================================ 4. R&D PROJECTS & PROTOTYPES ================================================================================ - Agent Preflight: Automated evaluation, red-teaming, and security harness for LLM agents (Devpost / OpenAI Build Week 2026 prototype). - Sada Messenger: Offline-first BLE mesh communication prototype built with Android Kotlin and cryptographic message passing. - LinkedIn Authority Engine: Automated editorial pipeline for professional reach. - Start Ex: Multi-brand digital platform engine with shared component design system. ================================================================================ 5. VOCATIONAL FOUNDATION & EDUCATION ================================================================================ - Electrical & Energy Systems Vocational Training (2021–2024): * Institution: TÜV Rheinland Akademie, Chemnitz, Germany * Program: Modulbaukasten Energie- und Gebäudetechnik * Relevance: Systematic circuit logic, troubleshooting under constraints, safety standards, and structured diagnostics directly transferred to software architecture. - Software Engineering Education (2025–Present): * Self-taught, accelerated product engineering with intensive code auditing, testing, and multi-platform deployment. ================================================================================ 6. AUDIENCE & COMMUNICATION ================================================================================ - Total Audience Reach: 75K+ followers across personal (25K+) and independent media (50K+) channels. - Experience in crisis documentation, field journalism, and clear technical communication. ================================================================================ 7. PUBLIC PROFILES & CONTACT INFORMATION ================================================================================ - Portfolio Website: https://obadadallo.web.app - GitHub: https://github.com/obadadallo95 - LinkedIn: https://www.linkedin.com/in/obada-dallo-777a47a9/ - Email: obada.dallo95@gmail.com - Telegram: https://t.me/obada_dallo95 - WhatsApp: https://wa.me/4917685649057