Available for new projects

Hi, I'm Sadrach Harmasantyo

I started as a Frontend Engineer, crafting seamless user experiences. Now, as a Fullstack Developer, I bring ideas to life end-to-end with clean code and scalable solutions.

Explore My CV

HTML5

CSS3

TailwindCSS

JavaScript

TypeScript

PHP

React.js

Next.js

Vue.js

Nuxt.js

Laravel

Shadcn UI

Ant Design

Git

Github

HTML5

CSS3

TailwindCSS

JavaScript

TypeScript

PHP

React.js

Next.js

Vue.js

Nuxt.js

Laravel

Shadcn UI

Ant Design

Git

Github

HTML5

CSS3

TailwindCSS

JavaScript

TypeScript

PHP

React.js

Next.js

Vue.js

Nuxt.js

Laravel

Shadcn UI

Ant Design

Git

Github

HTML5

CSS3

TailwindCSS

JavaScript

TypeScript

PHP

React.js

Next.js

Vue.js

Nuxt.js

Laravel

Shadcn UI

Ant Design

Git

Github

My Career Journey

Work Experience

A timeline of my professional roles and contributions.

Developer Intern

Telkom Indonesia

Mar 2026 - Present

Bandung, Indonesia

Contributed to the Netmonk project, a system designed for network monitoring.
Developed 5+ features to enhance customer satisfaction and improve unit test coverage.
Utilized modern technologies including React.js, Vue.js, Next.js, Nuxt.js, JavaScript, TypeScript, and Pinia.

Frontend Engineer Intern

DOT Indonesia

Jul 2025 - Nov 2025

Malang, Indonesia

Contributed to three enterprise-scale projects: PAMA Opex Capex, PAMA OTC, and PAMA Tax System.
Developed and enhanced 10+ features to improve user experience and interface functionality.
Utilized modern front-end technologies including React.js, Next.js, Ant Design (AntD), TypeScript, and TanStack Query.

Web Developer Intern

Study First Indonesia

Jun 2025 - Aug 2025

Malang, Indonesia

Developed and enhanced user interfaces using WordPress Elementor to improve website usability and visual consistency.
Contributed to the development of 5+ web pages, resulting in 100+ page visits and increased user engagement.
Managed 50+ participants during online tryout sessions on the StudyFirst website, ensuring smooth technical execution and user experience.

Student Employee Web Developer

Information Systems Laboratory Faculty of Computer Science Brawijaya University

Feb 2025 - May 2025

Malang, Indonesia

Developed a Student Employee Monitoring System using Laravel and Filament for student employee attendances and logbooks and drafted a system documentation book for the Student Employee Monitoring System.
Built an E-commerce Website for MSMEs (Micro, Small, and Medium Enterprises) using Laravel, Filament, and Livewire, designed to help local businesses expand digital presence and streamline online sales.

Real-World Results

Featured Projects

These are some of the projects I have worked on.

Telkom Indonesia•2026

Netmonk Network Monitoring

Role: Developer Intern at Telkom Indonesia in Netmonk network monitoring project.
Objectives: to enhance customer satisfaction with new features and stabilization performance.
Features: Developed 5+ features to enhance customer satisfaction and improve unit test coverage.
Tech Stack: React.js, Vue.js, Next.js, Nuxt.js, JavaScript, TypeScript, and Pinia.

Individual Project•2026

Native Cal

Role: Fullstack Developer
Objective: Calorie tracker application that harnessing the power of AI, it dynamically generates personalized health and fitness plans to help you reach your goals
Features: Interactive Dashboard Analytics, Log Exercise, Drink Water Tracker, Food Database, Scan Food
Tech Stack: React Native Expo, TypeScript, Firebase Database, Clerk Authentication

Individual Project•2026

Next AI Design

Role: Fullstack Developer
Objective: Web application that generates high-quality UI/UX designs using AI. Describe your idea in plain text, and the app generates complete, themed HTML Tailwind CSS screens for both websites and mobile apps
Features: AI Powered Design Generation, Interactive Canvas, Theme System, AI Screen Editing, AI Add New Screens, Code Export, Screenshot & Download Screen, Project Sharing
Tech Stack: Next.js 16, Google Gemini AI, Clerk Authentication, Neon PostgreSQL

DOT Indonesia•2025

PAMA Enterprise System

Role: Frontend Engineer Intern for DOT Indonesia project PAMA Enterprise Systems (Opex Capex, OTC, Tax System).
Objectives: To enhance and maintain enterprise-scale web applications by improving UI functionality, performance, and user experience.
Features: Developed and refined 10+ front-end features across three systems, contributing to seamless workflows and improved usability.
Tech Stack: React.js, Next.js, Ant Design (AntD), TypeScript, TanStack Query, Zod.

StudyFirst Indonesia•2025

StudyFirst Indonesia

Role: Web Developer for the company website.
Objectives: Improved website usability and engagement through UI enhancements.
Features: Developed 5+ pages using WordPress Elementor, managed 50+ users during online tryouts.
Tech Stack: WordPress, Elementor, HTML, CSS, JavaScript.