Available for new opportunities

Hey, I'm Haerul FajarSoftware Engineer.

Building fast, resilient, and polished digital experiences across Web & Mobile. Pairing clean engineering architecture with Flutter, Next.js, and AI-augmented workflows.

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West Java, ID

About me

I'm a Software Engineer based in West Java, Indonesia with 3+ years of experience building resilient, responsive applications across web, mobile, and digital products.

I believe that pixel-perfect UI isn't just perfectionism — it's respect for the people using what you build. Every margin, interaction, and animation should serve a clear purpose.

With solid engineering fundamentals and modern AI-augmented workflows, I adapt to any stack rapidly — from Next.js web applications to Flutter cross-platform mobile apps.

3+ Years Experience

Shipping modern web, mobile & digital products

Detail-Oriented & Pixel-Perfect

Strict attention to spacing, contrast & UX flow

Multi-Platform & Modern Ecosystem

Next.js, Flutter, React Native & AI-accelerated workflows

AI-Augmented Engineering

Core Foundation & Adaptive Multi-Stack

I don't lock myself into a single framework. With solid software engineering fundamentals and modern AI agent workflows, I can build and ship across web, mobile, and backend with high velocity and production quality.

Web & Frontend Core

Deep Architectural Foundation

Daily Driver

Where I have deep, instinctive knowledge: performance optimization, clean component architecture, state management, and design system fidelity.

Next.jsApp Router, SSR & RSC

React 19State, Hooks & Concurrent UI

TypeScriptStrict typing & interfaces

Tailwind CSSDesign tokens & fluid UI

Figma to CodePixel-perfect implementation

Git WorkflowBranching, PRs & CI/CD

Production-ready, battle-tested standard

Cross-Platform & Mobile

AI-Leveraged High Velocity

Multi-Platform

Using AI agents and prompt-driven development, I navigate new stacks, scaffold native mobile features, build backend APIs, and solve unfamiliar challenges rapidly.

Flutter & DartCross-platform iOS, Android & Desktop

React Native & ExpoNative mobile features & fluid UI

Backend & REST APIsNode.js, Express & Serverless

Databases & AuthSupabase, PostgreSQL & SQLite

AI Agent OrchestrationCursor, Claude Code, OpenCode

Python AutomationScripts, scrapers & tooling

Fast learning curve & autonomous delivery

The Modern Developer Mindset

Syntax can be generated in seconds. What matters is product sensibility, rigorous review, and shipping solutions that work.

Featured projects

Selected client & open-source work

Fintech Dashboard / SaaS

PayTrackLive Project

Stripe-inspired financial dashboard clone with real-time transaction filtering, interactive Recharts analytics, and dark mode support.

✓ Sub-100ms state updates & Next.js 16 App Router

Next.js 16TypeScriptTailwind CSSRecharts

Live Demo Code

Full-stack E-Commerce

OmniStore Modern CommerceCase Study

Headless storefront built with Next.js App Router, optimistic UI cart management, fuzzy product search, and responsive mobile-first checkout flows.

✓ Instant page transitions & lazy-loaded catalog

React 19Next.jsTailwind CSSZustand

Live Demo Code

Open Source / Design System

DevCanvas UI Component KitCase Study

Accessible, token-driven component library adhering to WAI-ARIA standards with interactive documentation and integrated theme switcher.

✓ 100% keyboard navigable & WCAG 2.1 AA compliant

TypeScriptRadix UITailwind CSSStorybook

Live Demo Code

Get in touch

Available for opportunities & collaborations

Let's build something impactful together.

Whether you need a versatile Software Engineer for your team, have an ambitious product to launch, or want to explore cross-platform web and mobile solutions — my inbox is always open.

Send Email

Connect Directly

GitHub

github.com/haerulr2

linkedin.com/in/haerulr2

Typically responds within 24 hours

West Java, Indonesia (UTC+7 / WIB)