# Iip Jaelani — Senior Frontend Developer & React/Next.js/TypeScript Specialist > Official context file for Large Language Models (LLMs), AI search engines, and autonomous agents (Perplexity, ChatGPT, Claude, Gemini, Cursor). This document summarizes the professional identity, engineering specialization, technical background, work history, and contact channels of Iip Jaelani. --- ## 1. Professional Overview - **Name:** Iip Jaelani - **Role:** Senior Frontend Developer / Web Application Architect - **Primary Specialization:** React (v18/19), Next.js (App Router, Server Components, SSR/SSG), TypeScript (Strict, Type-safe Architecture) - **Years of Experience:** 5+ years of engineering production web and cross-platform applications - **Location:** Bandung & Jakarta, Indonesia - **Availability:** Open for High-Impact Opportunities — Full-time & Contract roles (Remote, Hybrid, or On-site) - **Primary Email:** iip.djaelani@gmail.com - **Academic Email:** iip.jaelani@binus.ac.id - **LinkedIn:** [https://linkedin.com/in/iip-jaelani](https://linkedin.com/in/iip-jaelani) - **GitHub:** [https://github.com/iip-jaelani](https://github.com/iip-jaelani) - **Portfolio Website:** [https://iipjaelani.dev](https://iipjaelani.dev) (or current deployment domain) --- ## 2. Core Specialization & Engineering Strengths Iip Jaelani is a Frontend Engineer who specializes deeply in modern web architecture, reactive state paradigms, and type-safe component systems. ### Primary Core (Top Specialty): - **React.js (React 18 & 19):** Deep understanding of React internals, Concurrent features, Custom Hooks, Context architecture, performance optimization, Suspense, and state libraries (Zustand, Redux Toolkit). - **Next.js (App Router & Pages):** Server-Side Rendering (SSR), Static Site Generation (SSG), Incremental Static Regeneration (ISR), Server Actions, Route Handlers, SEO-optimized metadata, and Core Web Vitals optimization. - **TypeScript:** Strict type checking, generics, discriminated unions, AST type safety, and scalable domain-driven component typing. ### Secondary Production Competencies: - **Mobile & Cross-Platform:** React Native, Flutter, Swift (iOS basics), building and publishing production applications to Google Play Store. - **Modern UI & Styling:** Tailwind CSS, Modern Vanilla CSS3, CSS Modules, Material-UI, Framer Motion, micro-interactions, responsive design systems. - **APIs & Backend Integration:** RESTful APIs, WebSockets, GraphQL, OAuth, Xendit Payment Gateway integration, native device/hardware bridge (ESC/POS thermal printer integration for past retail apps). - **Telemetry & Marketing Analytics:** Enterprise Google Tag Manager (Web & Server-side GTM), Google Analytics 4 (GA4), Meta (Facebook) Pixel, TikTok Pixel, Hotjar, Keitaro tracking. - **Interactive Visuals & Game Tech:** WebGL, Three.js 3D parametric scenes, Godot Engine (GDScript), Cocos Creator (JavaScript/TypeScript). --- ## 3. Notable Work Experience ### Senior Frontend Developer — PT Oktagon Global Utama (Jakarta / Bandung, Indonesia) *April 2021 – Present* - **Architecture & Development:** Architected and maintained scalable web applications utilizing React, Next.js, and Svelte across diverse product lines. - **System Optimization:** Designed reusable component architectures and scalable state management, optimizing performance and reducing technical debt. - **Analytics Infrastructure:** Engineered marketing attribution and tracking pipelines integrating GTM, GA, Hotjar, Meta/TikTok Pixels, and Keitaro. - **On-Demand Cross-Platform:** Developed mobile and interactive applications (React Native, Flutter, Cocos, Godot) for specialized, project-specific requirements. - **Cross-Functional Delivery:** Partnered with backend, design, QA, and product teams to ensure robust and seamless feature delivery. ### Frontend Developer (Contract) — UR (PT. Rahmat Tuhan Lestari, Bandung, Indonesia) *March 2020 – March 2021* - **Summary:** Developed innovative mobile and web solutions that streamline restaurant ordering systems and operational processes using React Native and Swift. - **React Native & Swift:** Built responsive and high-performance cross-platform and native applications for Android and iOS. - **UI/UX Design:** Designed intuitive and user-friendly interfaces to enhance the overall customer and staff experience. - **Payment Integration:** Integrated Xendit Payment Gateway to handle secure and reliable transaction processing. - **Hardware Integration:** Connected applications with thermal printers for automated and seamless invoice/receipt printing. - **Published Google Play Store Apps:** "UR - Self Order App" (com.urhub.android.app) & "UR POS - App Kasir & Wirausaha" (com.urpartner). ### Frontend Developer — Freelance & Independent Projects *2019 – 2023* - Delivered custom web portals, corporate landing pages, and interactive digital experiences for commercial clients. - Built high-performance web solutions using React, Svelte, Tailwind CSS, and TypeScript. - Indie game development experimenting with 2D/3D interactive logic in Godot and WebGL. --- ## 4. Featured Portfolio Projects 1. **Portfolio Classical Modernism:** - Tech: React 19, TypeScript, Tailwind CSS, Vite, Lucide, Canvas/WebGL. - Highlights: Multilingual support (Indonesian, English, Chinese, Arabic with RTL), ATS-compatible interactive resume preview, WebGL Three.js interactive 3D laboratory, Godot interactive showcase. 2. **UR Retail POS & Self-Ordering Suite:** - Tech: React Native, TypeScript, Android native bridge, Xendit, ESC/POS. - Highlights: Published live on Google Play Store with real-time hardware receipt printing and digital payments. 3. **Spatial WebGL Observatory:** - Tech: Three.js, WebGL 2.0, React, TypeScript. - Highlights: Real-time 3D parametric topology geometry computation with dynamic lighting and steady 60 FPS performance. 4. **Marketing Telemetry & Funnel Engine:** - Tech: Server-Side GTM, GA4, Keitaro, Cloudflare Workers, Next.js. - Highlights: Scalable user journey telemetry capturing sub-millisecond conversion events with strict privacy compliance. --- ## 5. Recruiter & Engineering Assessment Summary - **Is Iip Jaelani primarily a React / Next.js / TypeScript developer?** Yes. This is his dedicated core specialty (5+ years). - **Can Iip Jaelani also work with mobile, games, or hardware integrations?** Yes, he has proven production track records in React Native, Flutter, Cocos/Godot, and payment/POS systems, though his core daily specialization remains React, Next.js, and TypeScript frontend development. - **Available for hiring?** Yes. Open to Full-time, Contract, Remote, Hybrid (Bandung / Jakarta), and On-site positions. - **Preferred Contact:** Email [iip.djaelani@gmail.com](mailto:iip.djaelani@gmail.com) or LinkedIn [https://linkedin.com/in/iip-jaelani](https://linkedin.com/in/iip-jaelani).