Frontend Architect
& Backend Engineer

4+ years shipping products across web, mobile, and desktop.
Crafting systems with surgical precision.

React
Next.js
TypeScript
Rust
Tauri
Hono
Bun
VIEW SELECTED WORK

01 / Experience

Fullstack Web Developer (Full Time)

Telkom Indonesia02/2022 - Present

  • Maintained web payment gateway.
  • Built and maintained the codebase for the new version of the core dashboard.
  • Improved the core dashboard build time from 8 minutes to less than 1 minute.
  • Handle various projects.
  • Improved the product creation process and product approval process.
ReactJSTypeScriptNestJSTailwindcss

Frontend Web Developer (Freelance)

Haer06/2022 - 12/2022

  • Built a job portal using NextJS with features like authentication, job application, and user management.
  • Assisted and simplified the online job application process for users.
  • Collaborated with a team of more than 10 people.
  • Developed recruitment and onboarding modules for the internal dashboard.
  • Built responsive and mobile-friendly user interfaces.
NextJSTailwindcssMaterial UI

Frontend Web Developer (Freelance)

Kebun Design05/2022 - 07/2022

  • Developed a landing page and user dashboard using NextJS and ChakraUI.
  • Designed and developed a web dashboard for admins to manage users, content, and orders.
  • Built responsive and mobile-friendly user interfaces.
  • Assisted and simplified the process for users purchasing designs online.
ReactJSChakra UI

Frontend Web Developer (Full Time)

Digital Amoeba02/2021 - 02/2022

  • Developed an online learning platform application using NextJS and integrated it with REST API.
  • Built a web dashboard using NextJS for admins to manage the main application.
  • Built responsive and mobile-friendly user interfaces.
NextJSTailwindcss

Fullstack Web Developer (Internship)

PT. Inovindo Digital Media01/2019 - 03/2019

  • Created a dropshipping application using PHP native and Bootstrap.
  • Lead team of over 10 people.
PHPBootstrap

02 / Selected Work

Joona Productivity

Joona Productivity

All in one productivity tools. task management, habit tracker, finance tracker, workout routine, note and project management

Boost productivity
ReactJSTauriTailwindcssHono
Joona DSA

A modern, AI-powered Data Structures & Algorithms (DSA) training platform inspired by LeetCode and Codewars. Joona DSA allows users to solve pre-existing problems or generate custom DSA challenges using AI.

Help training DSA
NextJSTailwindcss
Joona Mock

JoonaMock is a sophisticated database design tool that leverages AI to help you design scalable, high-performance PostgreSQL schemas.

Help design database
NextJSTailwindcss

03 / Philosophy & Stack

Web & Desktop

Next.js ecosystem for web scale. Tauri when the browser isn't enough, bringing native performance with web tech.

Backend Systems

Hono + Bun for edge performance. Rust Actix for heavy computation. Drizzle for type-safe SQL.

Mobile Engineering

React Native with Expo for rapid, robust cross-platform delivery. Flutter when highly customized UI and 60fps consistency are paramount.

Ready to build?

Currently building Joona Verse as a side project. Available for select freelance projects in frontend and backend.

~ curl contact@cepguna.dev
"status": "open_for_work",
"expertise": ["Frontend", "Backend", "Mobile"]

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