Andreas Billy Sutandi

I'm a fullstack developer with 10+ years of experience building web and mobile applications. I specialize in Next.js, React, React Native, and Java Spring Boot — and I integrate AI tools like Claude, GPT-4, Kimi, and MiniMax into my development workflow to ship faster, smarter, and at higher quality. Passionate about creating clean, scalable systems that solve real-world problems.

View My Work

Get In Touch

AI stack:ClaudeGPT-4KimiMiniMax

— 01. About —

The Developer Behindthe Machine

Andreas Billy Sutandi

AI-Powered Dev

Based in Indonesia

⟨/⟩

10+

Years of Experience

◈

50+

Projects Delivered

◎

AI Models in Workflow

GitHub

about.md

Frontend

React · Next.js · TypeScript

Backend

Java · Spring Boot · Node.js

Mobile

React Native · Expo

AI Tools

Claude · GPT-4 · Kimi · MiniMax

— 02. Skills —

Tech Stack &AI Toolkit

⟨/⟩

Frontend

React95%

Next.js90%

TypeScript90%

Tailwind CSS85%

HTML/CSS95%

⟦⟧

Backend

Java90%

Spring Boot85%

Node.js85%

PostgreSQL80%

REST API90%

◱

Mobile

React Native85%

⚙

DevOps

Docker75%

◎

AI Tools

Claude95%

GPT-490%

Kimi85%

MiniMax80%

Git90%

VS Code90%

— 03. Portfolio —

FeaturedProjects

Featured

AI Interview

Developed an AI-driven interview platform that enables automated candidate assessments using Vapi AI. The system conducts structured interviews, analyzes responses, and provides feedback, helping recruiters make informed hiring decisions efficiently.

Next.jsTailwind CSSTypeScriptVapi AI+1

Featured

Whatsapp Helpdesk

A cloud-based multi-tenant SaaS helpdesk platform built with Next.js 16, React 19, and Supabase that enables organizations to manage their WhatsApp customer support operations efficiently. The platform provides real-time chat management, multi-tenant isolation, role-based access control, and seamless WhatsApp Cloud API integration, allowing multiple organizations to operate independently within a single system.

nextjstailwindcssreactsupabase

Featured

Amanyaman Travel Insurance

Developed the App for Amanyaman, a travel insurance company, enabling travel agents to offer various travel insurance plans. The application supports personal, family, and group insurance options for both domestic and international travel.

ReactTailwind CSSTypeScriptJava Spring Boot+1

Agrodana Client Area

Developed the Client Area website application, serving as a portal for users to log in and create trading accounts. The application integrates with MetaTrader 4 and MetaTrader 5, allowing users to deposit and withdraw trading profits seamlessly.

ThymeleafJava Spring BootJava

Blockleader.io

BlockLeader.io, a comprehensive platform highlighting our team's portfolio.

Next.jsReactCSSTypeScript

Devlegion.io

Developed a web application that allows clients to view reports on the work completed.

Next.jsReactCSSTypeScript

onxdc.io

Developed a Central HUB for the XDC Community.

Next.jsReactCSSTypeScript

d0p3clubnft

Developed a UI project for minting NFTs across multiple blockchains.

Next.jsReactCSSTypeScript

Ebase

Developed a web application that allows users to interact with smart contracts from a web UI.

Next.jsReactCSSTypeScript

Trublox

Developed a platform for integrating NFTs into legal documents.

Next.jsReactCSSTypeScript

Anime Banks

Developed Anime Banks, a personal project showcasing a list of popular anime titles.

Next.jsReactCSSTypeScript

Nike Landing Page

Developed a personal project, the Nike Clone, to replicate the user interface and functionality of the Nike website.

Next.jsReactCSSTypeScript

— 04. Experience —

Where I'veShipped Work

Fullstack Developer | Mobile React Native Developer

ATI Business Group

Current10y 3m

Dec 2015—Present

Developing and maintaining full-stack web and mobile applications using modern technologies including Next.js, React, React Native, and Java Spring Boot. Responsible for end-to-end software development from system design and architecture to deployment and maintenance.

Lead Developer

Blockleader

Mar 2021—Mar 2023

Managed a team of frontend and backend developers, ensuring code quality, performance, and adherence to project timelines.

Support Specialist

JavaScript Mastery

1y 1m

Jul 2024—Aug 2025

Provided support to users via email and Discord, leveraging technical expertise in React, MongoDB, SQL, Next.js, and Clerk to resolve issues and explain code implementation. Efficiently handled inquiries, troubleshot problems, collaborated with the dev team, and contributed to improving customer service processes.

Self-Employed Fullstack Developer

Rootkit Finance

Dec 2021—Jul 2022

• Developed interactive and dynamic web applications for multiple Web3 projects using React.js and Ethers.js. • Created visually appealing and user-friendly web interfaces with HTML and CSS. • Managed code changes and team collaboration through Git version control. • Enhanced user experience by implementing responsive design principles. • Designed intuitive user interfaces to improve usability and accessibility. • Conducted thorough cross-browser testing to ensure consistent functionality across various web browsers.

— 05. Contact —

Let's BuildSomething Great

Have a project in mind or want to collaborate? I'd love to hear from you.

[email protected]

Based in

Indonesia

Status

Open to opportunities