Kalim U.

𝗜 𝗱𝗲𝘃𝗲𝗹𝗼𝗽 𝗳𝗹𝗮𝘄𝗹𝗲𝘀𝘀, 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 𝗺𝗼𝗯𝗶𝗹𝗲 (𝗶𝗢𝗦 & 𝗔𝗻𝗱𝗿𝗼𝗶𝗱) 𝗮𝗻𝗱 𝘄𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝘂𝘀𝗶𝗻𝗴 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄. 𝗠𝘆 𝗽𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼 𝗶𝘀: 𝗸𝗮𝗹𝗶𝗺-𝘂𝗹𝗹𝗮𝗵-𝗽𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼-𝗺𝗴𝗼𝗱𝗸𝗻.𝗳𝗹𝘂𝘁𝘁𝗲𝗿𝗳𝗹𝗼𝘄.𝗮𝗽𝗽 𝗖𝗵𝗲𝗰𝗸 𝗼𝘂𝘁 𝗺𝗼𝗿𝗲 𝗼𝗳 𝗺𝘆 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗶𝗻 𝗺𝘆 𝗨𝗽𝘄𝗼𝗿𝗸 𝗽𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼 𝗯𝗲𝗹𝗼𝘄. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗔𝗿𝗲 𝘆𝗼𝘂, • Struggling with a FlutterFlow build that a previous developer failed to deliver? • Need to translate pixel-perfect Figma designs into a highly responsive MVP? • Are you facing App Store rejections, failing backend logic, and broken API integrations? • or need to build a scalable app from scratch and launch it successfully? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I am not a basic "drag-and-drop" designer relying on visual templates. I am a full-stack software engineer who: • Architect secure backend databases. • Writes custom Dart code to bypass platform limitations • Integrates complex APIs to build highly scalable, professional-grade products. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Whether you're a startup building an AI-powered SaaS or a business needing a complex two-sided marketplace — I bring the technical mastery to build it right, the first time. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗛𝗢𝗪 𝗜 𝗖𝗔𝗡 𝗔𝗖𝗖𝗘𝗟𝗘𝗥𝗔𝗧𝗘 𝗬𝗢𝗨𝗥 𝗣𝗥𝗢𝗝𝗘𝗖𝗧: 1. End-to-End MVP & Full App Development: 𝗙𝗶𝗴𝗺𝗮 𝘁𝗼 𝗖𝗼𝗱𝗲: • Pixel-perfect translation of wireframes into highly responsive layouts • Works across Mobile, Tablet, and Desktop (PWA) formats • No overlapping widgets, grey-screen crashes, or text truncation. 𝗠𝗼𝗱𝘂𝗹𝗮𝗿 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 • Clean widget hierarchies • Reusable component libraries • Descriptive naming conventions for long-term maintainability 2. Backend Architecture & Strict Security: 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲 𝗠𝗮𝘀𝘁𝗲𝗿𝘆 • Firestore NoSQL data modeling • Authentication (Email, Phone OTP, Google/Apple Sign-In) • Cloud Storage • Custom Cloud Functions 𝗦𝘂𝗽𝗮𝗯𝗮𝘀𝗲 / 𝗣𝗼𝘀𝘁𝗴𝗿𝗲𝗦𝗤𝗟 • Complex relational database design • SQL Views (bypassing FlutterFlow multi-filter limitations) • Edge Functions • RPCs 𝗔𝗯𝘀𝗼𝗹𝘂𝘁𝗲 𝗗𝗮𝘁𝗮 𝗣𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗼𝗻 • Never leaves databases exposed • Writes strict Firestore Security Rules and Supabase Row-Level Security (RLS) policies • Guarantees user data isolation and prevents catastrophic leaks 3. Project Rescues, Bug Fixing & App Store Deployment 𝗖𝗼𝗱𝗲 𝗦𝘁𝗮𝗯𝗶𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻 • Diagnosing broken logic • Resolving WebAssembly (Wasm) compilation errors • Fixing infinite loading screens • Untangling messy conditional logic 𝗖𝗼𝘀𝘁 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 • Structuring efficient database read/write queries • Implementing local state caching (SQLite/Hive) • Native image compression to drastically reduce cloud hosting costs 𝗦𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗟𝗮𝘂𝗻𝗰𝗵𝗲𝘀 • Navigating Apple App Store Connect and Google Play Console • Resolving Apple Guideline rejections (1.2 UGC safety, 2.1 app completeness, 2.3.3 screenshot/metadata accuracy) • Configuring APNS/FCM tokens • Fixing Android SHA1/SHA256 fingerprint login issues 4. Advanced APIs, Custom Code & AI Integration 𝗖𝘂𝘀𝘁𝗼𝗺 𝗗𝗮𝗿𝘁 𝗟𝗼𝗴𝗶𝗰 • Writing Custom Actions, Functions, and Widgets • Haversine formula for geofencing • Dynamic index reordering lists • Custom CSV exports • Interactive SVG charts • WebView token interception 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝘃𝗲 𝗔𝗜 • Integrating OpenAI (GPT-4o), Gemini, and Google Cloud Vision API • Strict JSON parsing • OCR data extraction • Stateful conversational memory • Formatting streaming text responses cleanly with Markdown 𝗠𝗼𝗻𝗲𝘁𝗶𝘇𝗮𝘁𝗶𝗼𝗻 & 𝗠𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲𝘀 • Flawless setup of RevenueCat for cross-platform in-app subscriptions and paywalls • Deep integration of Stripe • Stripe Connect for autonomous split payments in two-sided marketplaces ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝟭𝟬𝟬% 𝗜𝗻𝗱𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝘁 𝗘𝘅𝗽𝗲𝗿𝘁 • No agency outsourcing • Work directly with a dedicated, single-focus engineer • Takes extreme ownership of your product and source code 𝗧𝗿𝗮𝗻𝘀𝗽𝗮𝗿𝗲𝗻𝘁 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 • Fluent English • Rapid response times • Highly structured task tracking via Jira/Trello 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲 𝗙𝗹𝗲𝘅𝗶𝗯𝗶𝗹𝗶𝘁𝘆 • Maintains highly flexible working hours • Ensures consistent daily overlap with global clients • Enables real-time collaboration and pair-programming debugging sessions ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Let’s build something exceptional. Click the 𝗜𝗻𝘃𝗶𝘁𝗲 button to share your Figma designs or project specs, and let's discuss the details in the chat. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━