Senior Frontend Developer — Abbas Sabetghadam

📋 Overview

Senior Frontend Developer with deep expertise in modern frameworks — from HTML, CSS, and JavaScript to React 19, Next.js 15, Angular 19, and Vue 3.

Over the last 3 years, I've focused on building high-performance Web3 and AI platforms using React 19, Next.js 15, Angular 19, and Vite + TypeScript.

16+ Angular projects (2017–2026) and 8+ React projects (2023–2026) across fintech, e-commerce, gaming, and blockchain industries.

✅ 16+ Angular Projects ✅ 8+ React Projects ✅ Web3 & AI Platforms

⚡ Core Competencies

🎨 Modern Frontend Architecture (React, Angular, Vue)

⚡ Performance Optimization & Core Web Vitals

🧩 Component Design Systems & Storybook

🌐 Web3 & Blockchain Frontends (Web3.js, Ethers.js)

🔄 Real-Time Apps (WebSocket, SignalR, SSE)

📱 Responsive & Accessibility (WCAG 2.1 AA)

🔒 Frontend Security (XSS, CSRF, CSP, JWT)

🧪 Testing (Jest, Vitest, Playwright, Cypress)

🛠️ Modern Frontend Stack 2023–2026

Web Frameworks

React 19 Next.js 15 Angular 19 Vue 3 Nuxt.js

Language & Build Tools

TypeScript Vite JavaScript (ES6+) Webpack esbuild

⚡ Currently building Vanilla TypeScript projects with Vite — fast dev server, instant HMR, production-ready builds.

Styling & UI

Tailwind CSS Sass/SCSS CSS3 Figma Storybook

State Management

Redux Toolkit Zustand NgRx Pinia TanStack Query

Web3 & Blockchain

Web3.js Ethers.js Solidity Hardhat Foundry

Real-Time & Communication

WebSocket SignalR Socket.io Server-Sent Events (SSE) Redis Pub/Sub

🔄 Built live chat systems, real-time dashboards, and instant notifications with WebSocket and SignalR for 500+ concurrent users.

Testing & Quality

Jest Vitest React Testing Library Playwright Cypress

💼 Professional Experience

🧑‍💻 Senior Frontend Developer & Software Architect

2018 – Present

Coinatik · Arbify.site · AIConnective · ECOMSYS

Coinatik (2018): Built AngularJS frontend for P2P crypto exchange with real-time WebSocket chat, wallet UI, and escrow dashboard.
Arbify.site (2023): Developed React 18 frontend with TypeScript, WebSocket for live arbitrage data, Chart.js for real-time visualizations, and responsive design for 500+ concurrent users.
AIConnective (2024): Architected React 19 + Next.js 15 frontend with Web3.js integration, Tailwind CSS, and AI-powered dashboard for blockchain analytics.
ECOMSYS (2023+): Built Angular 17–19 frontend with SignalR for real-time notifications, modular architecture, and role-based access control.
Led frontend teams of 3–6 engineers · Code reviews · CI/CD · Performance optimization.

✈️ Freelance Frontend Developer

2016 – 2018

Probin · Kabby · Jandro · Scraper

Probin (Netherlands): Built cross-platform mobile app frontend with Xamarin (C#).
Kabby (Pakistan): Developed taxi app frontend with Xamarin.Forms.
Jandro: Built ASP.NET MVC web portal + Android native service for remote call logging.
Scraper (2016–2017): Built commercial scraping platform frontend with plugin-based architecture.

🚀 Key Frontend Projects

📊 Arbify.site – Real-Time Arbitrage Dashboard

Frontend: React 18 · TypeScript · WebSocket · Chart.js · Tailwind CSS
Features: Live price updates from exchanges, real-time arbitrage detection, interactive charts, 500+ concurrent users.
Performance: Optimized re-renders, virtualized lists, <100ms latency for data updates.

🤖 AIConnective – AI-Blockchain Dashboard

Frontend: React 19 · Next.js 15 · Web3.js · Tailwind CSS · TypeScript
Features: AI-powered blockchain analytics, LLM integration, on-chain data visualization, responsive design.
Innovation: Independent scaling layers for AI and blockchain data, real-time WebSocket updates.

💰 Coinatik – P2P Crypto Exchange UI

Frontend: AngularJS · WebSocket · Bootstrap · JavaScript
Features: Real-time chat between buyers and sellers, order book, wallet UI, escrow dashboard.
Impact: Full-featured exchange UI with real-time communication.

🛒 ECOMSYS – Enterprise E-Commerce Platform

Frontend: Angular 17–19 · SignalR · TypeScript · Sass
Features: Real-time order notifications, inventory updates, user activity tracking, role-based access control.
Impact: 99.9% uptime, supporting a growing product catalog and user base.

⛓️ Unilab – DEX Frontend on Polygon (2022)

Frontend: React · Web3.js · Solidity · TypeScript
Features: Decentralized Exchange UI, custom token mining dashboard, staking interface, liquidity pools.
Innovation: Complete DeFi frontend on Polygon with real-time blockchain data.

🅰️ Angular — 2017 to 2026 16+ Projects

Period	Version	Key Projects	Projects
2017–2018	AngularJS 1.2	Coinatik, BitBix	2
2018–2020	Angular 2–9 (Ivy)	Web3 Apps, Enterprise Dashboards	6+
2021–2023	Angular 12–16	Enterprise Apps, Admin Panels	5+
2024–2026	Angular 17–19	ECOMSYS, Web3 Platforms	3+

⚛️ React — 2023 to 2026 8+ Projects

Year	Version	Project	Tech Stack	Status
2023	React 18	Arbify.site ↗	React · TypeScript · WebSocket · Chart.js	Live
2024	React 19	AIConnective ↗	React 19 · Next.js 15 · Web3.js · Tailwind	Live
2024	React 19	ERC404 — Fractional NFT	React 19 · Hardhat · Solidity	90%
2024	React 19	DEX + Staking Platform	React 19 · Web3.js · Solidity	Deployed
2025–2026	React 19	6+ Web3 Dashboards	React 19 · Vite · TypeScript · Web3.js	Complete

🔄 Real-Time & WebSocket Systems Live Chat · Dashboards

I've built real-time features using WebSocket and SignalR for instant messaging, live dashboards, and real-time data streaming.

Project	Technology	Real-Time Feature	Status
Arbify.site	WebSocket · Node.js · React	Live arbitrage data, real-time price updates from exchanges, 500+ concurrent users	Live
Coinatik	WebSocket · ASP.NET MVC · AngularJS	Real-time chat between buyer and seller on P2P exchange platform	Complete
CEX Arbitrage Engine	WebSocket · Node.js · Python	Live order book streaming, <100ms latency arbitrage detection	60%
ECOMSYS	SignalR · .NET Core · Angular	Real-time notifications for orders, inventory updates, and user activity	Live

⚡ Key Real-Time Skills: WebSocket (ws, Socket.io) · SignalR (.NET) · Server-Sent Events (SSE) · Live Chat Systems · Real-Time Dashboards · Event-Driven Architecture · Pub/Sub (Redis) · Low-Latency Data Streaming

⚡ Vite + TypeScript — Modern Build Tool 2025–2026

Currently building Vanilla TypeScript projects using Vite as the build tool — fast dev server, instant HMR, and production-ready builds. No framework overhead, pure TypeScript for lightweight, high-performance dashboards.

                // vite.config.ts — Modern build tool with instant HMR
                import { defineConfig } from 'vite';

                export default defineConfig({
                  plugins: [],
                  server: {
                    port: 3000,
                    open: true,
                  },
                  build: {
                    target: 'es2020',
                    minify: 'esbuild',
                    sourcemap: true,
                    rollupOptions: {
                      input: 'index.html',
                    },
                  },
                });

                // main.ts — Type-safe, modular, and fast
                import { renderApp } from './app';
                import './style.css';

                const root = document.getElementById('app');
                if (root) {
                  renderApp(root);
                } else {
                  throw new Error('Root element not found');
                }
            

🏗️ Frontend Architecture Expertise

🧩

Component Design

Atomic design, reusable components, design systems, Storybook, and component-driven development.

⚡

Performance

Code splitting, lazy loading, memoization, virtual lists, Core Web Vitals (CLS, LCP, FID).

🔒

Security

XSS, CSRF, Content Security Policy, OAuth2, JWT, and secure input sanitization.

📱

Responsive & Accessibility

Mobile-first design, WCAG 2.1 AA, ARIA, keyboard navigation, cross-browser compatibility.

ℹ️ Additional Information

💡 Work Style: Highly collaborative, detail-oriented, thrives in fast-paced environments.

🎯 Career Focus: Deepening technical expertise in frontend architecture & Web3.

🏗️ Architecture Philosophy: "Architecting with the team" — coding alongside developers.

👥 Early Leadership: Led team of 4 developers as early as 2004.

📦 Framework Builder: ActivePage — 11 years (2005–2016). Source code available.

🏆 Career Milestone: Selected among top university graduates by Professor Farmanesh.

🚀 Entrepreneur: Founded Scraper (2016–2017) — pivoted to crypto in late 2017.

🔄 Full-Spectrum: From Assembly/C to high-level web frameworks.

🌍 Languages: Fluent in English and Persian.

💻 OS & Kernel Development 2010+

Beyond web and blockchain, I've built a personal operating system from scratch — including mouse and graphics drivers, memory management, and hardware interfacing.

💻

Personal OS Development

Custom OS with mouse & graphics drivers

🖱️

Hardware Drivers

Mouse, graphics, and keyboard drivers in Assembly & C

⚙️

Kernel & Memory Management

Custom kernel with memory allocation and process management

Tech Stack: Assembly x86 · C · Hardware Interfacing · BIOS Interrupts · VGA Graphics

📱 Note on Mobile: I also have experience in mobile development — Xamarin.Forms (Probin — C#, XML, Hardware Scanner) and Android Native (Jandro, Driver Tracking — Java, GPS, REST APIs). However, this is not part of my Frontend Web portfolio. See Senior Mobile Developer for details.

Let's Build Together 🚀

Abbas Sabetghadam