I am a product-minded Full Stack Engineer, Mobile Application Developer, and UI/UX Designer specializing in building high-performance web applications, offline-first hybrid mobile apps, and user-centric interfaces.

With deep experience across modern React 19, TypeScript, React Native, Node.js, Capacitor, Shopify Liquid, and cloud-native serverless architectures (AWS Amplify Gen 2, DynamoDB, AppSync), I bridge the gap between aesthetic design systems and scalable software engineering.

• 🎓 Education: B.E. in Electronics & Communication Engineering, Anna University Regional Campus Madurai
• 🚀 Specializations: Cross-Platform Mobile Apps (React Native, Capacitor iOS & Android), AI Integrations (Groq/OpenAI, TFLite on-device), Shopify Theme Development, Scalable REST APIs, and Figma Design Systems

Domain	Technologies & Frameworks
Frontend Frameworks
Mobile & Edge AI
Backend & Cloud
E-Commerce & AI
UI/UX & Product

AI-driven B2B Agricultural Quality Grading & Marketplace Platform

• Stack: React 19, Capacitor (iOS & Android), AWS Amplify Gen 2, Amazon Cognito, DynamoDB, TensorFlow Lite.
• Engineered offline-first on-device AI computer vision inference for real-time agricultural grading.
• Implemented marketplace order workflows, payment integration, real-time market rate synchronization, and admin console connection.
• 📦 Download APK Release v1.0.0

Production React 19 + TypeScript + Capacitor Mobile Application

• Stack: React 19, TypeScript, Vite, Capacitor 8 (Android/iOS), Tesseract.js, Vitest.
• 100% on-device encrypted data persistence with zero external tracking or cloud dependency.
• On-device camera receipt OCR, interactive SVG spending breakdown charts, and JSON/CSV export.
• 📦 Download Android APK (v1.0.0) · Inspect Source Code

Cross-Platform Mobile Application (Android & iOS) for Automotive Dealerships & Service Billing

• Stack: Capacitor (Android & iOS), React 19, TypeScript, Node.js, SQLite/IndexedDB.
• Cross-platform mobile client for workshop technicians: real-time Job Card bay telemetry, camera barcode spare parts scanner, and Bluetooth thermal printer integration.
• Automated invoice processing and inventory replenishment, achieving a verified ~50% reduction in manual data entry.
• Offline-first transactional synchronization ensuring seamless operations during workshop Wi-Fi blindspots.

Custom Shopify OS 2.0 Theme Development for Modern Modular Storage Systems

• Stack: Shopify Liquid, HTML5, CSS3, JavaScript ES6+, Theme Architecture.
• Custom handcrafted storefront featuring dynamic video showcases (Tulai pegboard collection), interactive product variant selectors, drawer cart, and responsive storefront sections.
• 🌐 Live Storefront · Explore Liquid Source Code

Production AI Customer Support Platform with Streaming Inference

• Stack: React, Node.js, Groq API, Streaming SSE (Server-Sent Events), Express.
• Secure server proxy architecture ensuring zero browser exposure of LLM API credentials.
• Real-time token streaming with sub-200ms latency, intelligent company FAQ grounding, and interactive quick-replies.
• 💻 Inspect Full Source Code

Enterprise ERP Solutions, Tax Engines & Corporate Web Architecture (Dubai, UAE)

• Stack: React 19, TypeScript, Tailwind CSS, Vite.
• Scalable corporate web platform featuring interactive UAE VAT and Corporate Tax computation engines, ERP platform comparison switchers (Oracle, SAP, Microsoft Dynamics 365, TallyPrime, Zoho), and certified partner showcase.
• 🌐 Live Corporate Portal

Official Educational Web Platform & Optimization

• Stack: HTML5, Vanilla JavaScript, CSS3, Information Architecture.
• 85+ dynamic department and admissions pages with 13,000+ validated link structures and zero 404 deadlocks.
• Fast page load performance with mobile-first responsive design.
• 🌐 Live Institution

Modern Public Website & Learning Platform UI/UX Architecture

• Stack: React 19, TypeScript, Tailwind CSS, Figma.
• Complete redesign featuring course catalogues, dynamic pricing tiers, student testimonials, FAQ accordions, and dual dark/light themes.

Client Relationship Management & Operations Interface

• Stack: CRM Architecture, Responsive UI, Business Workflow Optimization.
• Centralized customer record management, business intelligence dashboards, and structured operational tracking.
• 🌐 Live Interface

End-to-End Product Design, AI Generation States & Direct-Manipulation Canvas Editor

• Discipline: Product Design, Design System, Information Architecture, SaaS Monetization.
• Conceived and designed an AI-powered website builder in Figma featuring dynamic milestone build state telemetry.
• Designed contextual floating canvas controls, transparent subscription pricing, and accessible typography scales.
• 🖼️ View 9 Production UI Screens & Case Study

Comprehensive 380+ Screen Design System, Multi-Chain Mobile Architecture & Real-Time Trading Terminal

• Discipline: Web3 Product Design, 380+ Screen Mobile/Desktop Design System, Financial Telemetry.
• Built an exhaustive design system spanning biometric non-custodial wallet connections (MetaMask, Coinbase, Phantom), real-time order books, DeFi yield vaults, and dark-theme OLED trading terminals.
• 🖼️ View 380+ Screen Case Study & Design System

End-to-End EHR Workflows, OPD Queue Management, Diagnostic Lab Reports & Healthcare Billing

• Discipline: Healthcare SaaS UX, Clinical Information Architecture, High-Density Data Grids.
• Designed role-based clinical portals eliminating physician data-entry fatigue: patient triage queues, automated abnormal biomarker highlights, and insurance claims reconciliation.
• 🖼️ View 5 Production Clinical Screens & Case Study

End-to-End EdTech Assessment UX, Proctored Examination Dashboard & Candidate Journey

• Discipline: EdTech Assessment UX, User Journey Mapping, Low-Fi to High-Fi Prototyping.
• Architected candidate flow from role-based authentication to proctored test dashboards with active section timers, question palletes, anti-cheating telemetry, and performance analytics.
• 🖼️ View User Flows, Wireframes & Exam Dashboard

Conversion-Optimized Dark-Theme UI/UX, SaaS Value Narrative & Micro-Delight Interactions

• Discipline: Landing Page Design, Conversion Rate Optimization (CRO), Modern SaaS Visual Identity.
• Designed high-impact 12-column responsive layout with deep-space OLED contrast, generative gradient accents, and frictionless dual CTA onboarding funnels.
• 🖼️ View Landing Page Design & CRO Breakdown

• Led user research and stakeholder discovery across faculty and student bodies.
• Built a comprehensive WCAG-compliant design system and interactive Figma prototypes adopted as the department's official web template.
• 📹 Watch Portal Walkthrough

• High-fidelity OLED-optimized dark theme companion app and wearable product visualization.
• Biometric health telemetry (Heart Rate, SpO2, HRV, Skin Temp), sleep architecture tracking, and smart touch gesture configuration.
• 📹 View Interactive Demo & UI Mockup

• Responsive web and mobile interface design for enterprise internal workflows.
• User journey mapping, Figma component libraries, and interactive prototyping.

• Intuitive dual-role (Admin vs Employee) workforce management system UI/UX.
• Information architecture for onboarding, attendance monitoring, and performance metrics.

• Task 1: Food Delivery App — Minimalist checkout funnel and culinary browsing.
• Task 2: E-Commerce Platform — Micro-interactions, swatch selectors, and slide-out cart.
• Task 3: Email Newsletter — Scannable typography and bulletproof cross-client layout.
• Task 4: RDZ Café Mobile App — Roast customizer, express pickup, and digital loyalty card.

• UI/UX & AI Developer (Dec 2024 – Present)
  • Leading frontend architecture and AI integration prototypes.
  • Designing comprehensive component libraries and high-converting web applications.
• Frontend & Design Lead — Department Portal Project, Anna University (2024)
  • Spearheaded user research, responsive layouts, and cross-browser production rollouts.

• 🌐 Portfolio: rahaman1721.framer.website
• 💼 LinkedIn: linkedin.com/in/obaidhur-rahaman-1721z
• 📧 Email: rahaman171920@gmail.com
• 📍 Location: Tamil Nadu, India