Hi, I'm Antonius Sebastian

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I craft clean, modern web applications using JavaScript, TypeScript, and open-source technologies. I'm passionate about learning, building, and solving real-world problems through code.

Resume
Antonius Sebastian
About Me

Who I Am

A Passionate Developer

I'm a passionate software developer with strong foundations in web technologies, algorithms, and clean coding practices. My journey started with online courses like Angela Yu's Web Development Bootcamp and Harvard's CS50, which ignited my passion for creating impactful software.

I proudly represented Universitas Indonesia in the Huawei ICT Competition and won 2nd place at the national level. Beyond competitions, I stay active in tech communities such as Komandro CCIT FTUI, CSS, GDGoC UI, and have volunteered at AWS Community Day.

I enjoy building things that matter, whether it's personal projects, organizational tools, or collaborative web applications. I'm always seeking to improve my craft and contribute to something meaningful.

Problem Solver

I enjoy breaking down complex problems and building clean, scalable solutions.

Team-Oriented

I thrive in collaborative environments through experience in organizations and tech events.

Continuous Learner

Always expanding my skill set through courses, projects, and community involvement.

Skills

Technical Expertise

Programming Languages

Languages I've used for software development and problem solving

JavaScript
TypeScript
Python
+2 more

Engineering Concepts

Foundational knowledge from coursework and competitive programming

Data Structures
Algorithms
OOP
+1 more

Frontend Development

Tools and frameworks for creating interactive, responsive UI

React
HTML/CSS
Tailwind CSS
+1 more

Backend Development

Building robust APIs and server-side applications

Node.js
Express
Prisma
+1 more

Database Systems

Experience with relational and NoSQL databases

PostgreSQL
MySQL
MongoDB
+1 more

Development Tools

Tools I use for development, collaboration, and deployment

Git
Docker
Google Cloud Platform
+1 more

I work primarily with modern web development stacks and have experience with backend systems, databases, and foundational computer science concepts.

Portfolio

Featured Projects

Store API

Store API

In Progress

A RESTful API for managing products, users, authentication, and orders in an e-commerce system.

Node.js
Express
Prisma
+4
Blog-Hub

Blog-Hub

A modern blog platform with user authentication and content management features.

Java
JSF
Hibernate
+2
Attendance Management System

Attendance Management System

An Android-based QR code attendance tracking system for events.

Android
Node.js
Express
+2
Euphoria - E-commerce UI/UX

Euphoria - E-commerce UI/UX

A fully responsive UI/UX design for a clothing store website built with React.

React
Tailwind CSS
Responsive Design
+1
Demo
Subscription Management API

Subscription Management API

A production-ready API handling users, payments, and business logic for subscription services.

Node.js
Express
MongoDB
+2
Apple iPhone 15 Pro Clone

Apple iPhone 15 Pro Clone

A high-fidelity Apple iPhone 15 Pro clone with 3D animations and interactive elements.

React
Three.js
GSAP
+1
Demo
Achievements

Certificates

Harvard CS50x

Harvard CS50x

Harvard University2024

Completed CS50x, including ten problem sets and one final project. Awarded from Cambridge, Massachusetts.

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Huawei ICT Competition

Huawei ICT Competition

HuaweiDecember 2024

2nd Winner in Computing Track at Huawei ICT Competition 2024-2025 National Final.

COMPFEST 16

COMPFEST 16

University of Indonesia2024

Participant of Senior Competitive Programming Contest at COMPFEST 16.

AWS Community Day Indonesia

AWS Community Day Indonesia

AWSNovember 2024

Volunteer at AWS Community Day Indonesia 2024, contributing to uniting developers and elevating innovation with AWS.

Komandro CCIT FTUI

Komandro CCIT FTUI

Universitas IndonesiaFebruary 2024

3rd place winner in the Database competition at Komandro Brilliant Youthful Tech-Savvy Enthusiastic event.

Web Development Bootcamp

Web Development Bootcamp

UdemyDecember 2024

Completed The Complete 2024 Web Development Bootcamp by Dr. Angela Yu (61.5 total hours).

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Contact

Get In Touch

Location

West Jakarta, Indonesia

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