Sadrach Harmasantyo Profile Picture
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.

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 Indonesia2026

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.
Netmonk Network Monitoring
Individual Project2026

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
Native Cal
Individual Project2026

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
Next AI Design
DOT Indonesia2025

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.
PAMA Enterprise System
StudyFirst Indonesia2025

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.
StudyFirst Indonesia
Performant
Accessible
Secure
Interactive
Scalable
User Friendly
Responsive
Maintainable
Search Optimized
Usable
Reliable
Performant
Accessible
Secure
Interactive
Scalable
User Friendly
Responsive
Maintainable
Search Optimized
Usable
Reliable

About Me

A Glimpse Into My World

Learn more about who I am, what I do, and what inspires me

My Reads

Explore the books shaping my perspective

Book Cover

Beyond The Code

Explore my interests and hobbies beyond the digital world

Gaming🎮
Fitness🏋️‍♀️
Culinary🍽️
Coding💻
Travel✈️
Map
Smile Memoji

Let's create something amazing together

Ready to bring your next project to life? Let's connect and discuss how I can help you achieve your goals.