Futuristic Interfaces8+ Years ShippingKotlin · React Native · React.js · Next.js · Nest.js

KHAMDAN NAHARI

Software Engineer — 8+ Years Experience

Software Engineer with 8 years of experience, specializing in Kotlin, React Native, React.js, Next.js, and Nest.js. Experienced in building efficient, scalable, and user-friendly applications.

Years

8+

Mobile & web delivery experience

Products

15

Apps & websites launched

Growth

13.5M

Monthly active users impacted

About

Crafting future-ready mobile & web experiences

Software Engineer with 8 years of experience, specializing in Kotlin, React Native, React.js, Next.js, and Nest.js. Experienced in building efficient, scalable, and user-friendly applications.

Committed to engineering excellence and product craftsmanship, turning complex problems into elegant, scalable solutions.

AI initiatives

Designed AI-powered chat tools for creators at Collabreate.

Telco scale

Built Smartfren Digital Outlet + MySmartfren experiences powering nationwide commerce.

Learning impact

Boosted Ruangguru engagement with live teaching, consultations, and gamification.

Skills

Immersive skill

A comprehensive technical toolkit spanning mobile development, modern web frameworks, and scalable backend architecture.

Android Native

KotlinJavaAndroid SDKJetpack ComposeCoroutinesRxJavaRetrofitRoomKoinDagger/HiltJUnitMockito

Mobile Cross-Platform

React NativeExpoJavaScriptTypeScriptAxios

Frontend Web

React.jsNext.jsCSSTailwind CSSHTMLRedux

Backend

PostgreSQL, Nest.jsPrisma ORMNeon DBSupabase

Architecture & Ops

AWSOOPSOLIDClean ArchitectureJenkinsGit

Experience

Impact timeline

AI-native products, telco platforms, and education apps engineered with motion, accessibility, and measurable results.

Apr 2025 — Present

Software Engineer

Collabreate • Singapore

Collabreate is a Singapore-based platform helping content creators connect with brands, manage campaigns, and streamline payments across Southeast Asia.

  • Built an AI-powered chat application that streamlines content uploads, analytics tracking, and cross-platform messaging, enabling content creators to work faster and more efficiently.
  • Developed an internal MCP (Model Context Protocol) system to connect Cliqo AI Chat with internal data and services, enabling automated data handling and smoother AI-driven workflows.
  • Integrated Cliqo AI Chat with external MCP services and social media platforms, including Gmail, Outlook, WhatsApp, Instagram, and LinkedIn, enabling users to send messages, manage communications, publish content, and monitor analytics through a unified AI interface.
  • Developed the Tax Elevate website with a faster and cleaner user interface, improving SEO performance and increasing client lead generation.
  • Managed and maintained AWS infrastructure (EC2 and Elastic Beanstalk), ensuring reliable deployment, scalability, and application security.

Jan 2023 — Apr 2025

Software Engineer

XL Smart • Indonesia, Jakarta

XL Smart is a major telecommunications provider in Indonesia, offering mobile data, internet, and digital services with a strong focus on network coverage and innovation.

  • Integrated payment features with ShopeePay, Gopay, and Dana, increasing transaction volume.
  • Improved AXISnet code quality by conducting reviews and internal seminars.
  • Enhanced build process efficiency by 100% through modularization and new architectural standards.
  • Boosted monthly active users from 12M to 13.5M by developing and refining features.
  • Developed a Digital Outlet website, significantly enhancing sales capabilities for Smartfren products and vouchers.

Jun 2021 — Nov 2022

Android Developer

Ruangguru • Indonesia, Jakarta

Ruangguru is a leading Indonesian edtech platform that provides online learning solutions, offering a wide range of educational content and services for students and professionals.

  • Developed live teaching, pretest, and consultation features, contributing to a 7.3% increase in weekly active users.
  • Streamlined product development by migrating from Android Native to React Native, reducing resources by 50%.
  • Implemented gamification features for Brain Academy Online, enhancing user engagement and retention.

Oct 2018 — May 2021

Android Developer

Olsera • Indonesia, Yogyakarta

Olsera is an Indonesian point-of-sale (POS) platform that offers comprehensive solutions for retail and online businesses, including inventory management, sales tracking, and e-commerce integration.

  • Developed reservation software for beauty and fitness businesses, optimizing booking processes for greater efficiency.
  • Implemented barcode scanning using the ZXing library, enhancing inventory management for users.
  • Collaborated with cross-functional teams to define features, improving overall product usability and performance.

Projects

Full delivery grid

Product launches across AI, fintech, telco, and learning—each crafted with obsessively polished frontends and resilient code.

Mobile 2025

Cliqo App

Built an AI-powered chat application to help content creators streamline their work, using React Native and Nest.js.

React Native · Nest.js

Enables creators to work faster with unified AI-driven content uploads, analytics, and cross-platform messaging.

Web 2025

Cliqo Landing Page

Built a fast, modern, and conversion-focused landing page for Cliqo using Next.js and TypeScript, designed to showcase the app's AI capabilities and drive early user interest.

Next.js · TypeScript

Strengthens brand presence and supports sign-up conversions through clear messaging and performance.

Web 2025

Tax Elevate Website

Developed the official website for Tax Elevate using Next.js and TypeScript, focusing on clean UI, responsive design, and SEO optimization.

Next.js · TypeScript

Improved SEO performance and increased client lead generation.

Web 2025

Cliqo For Business

Developed a scalable and professional web platform for Cliqo Business using Next.js and TypeScript, highlighting AI-driven enterprise solutions and optimizing user flow to support lead generation and business adoption.

Next.js · TypeScript

Supports enterprise adoption with clear value proposition and streamlined onboarding.

Web 2025

Teliti Website

Developed an AI-powered tax research platform using Next.js and TypeScript, featuring an intelligent chat system grounded in credible and verifiable sources to ensure accurate outputs and minimize hallucinations; integrated Stripe for secure payment processing and subscription management.

Next.js · TypeScript · Stripe

Delivers reliable tax research through source-grounded AI and seamless subscription billing.

Web 2024

Digital Outlet Website

Developed a digital outlet website for the sale of Smartfren cards, credits, data packages, and vouchers, catering to both wholesale and retail markets, utilizing the Next.js framework and TypeScript.

Next.js · TypeScript

Significantly enhanced sales capabilities for Smartfren products and vouchers.

Mobile 2023

AXISnet App

Created a cellular service application utilizing Kotlin.

Kotlin

Supports MAU growth from 12M to 13.5M with improved build efficiency and code quality.

Mobile 2023

MySmartfren App

Developed a cellular service application using React Native.

React Native

Enables subscribers to manage plans, vouchers, and support in one place.

Mobile 2021

Ruangguru App

Developed an educational application using Kotlin and React Native.

Kotlin · React Native

Live teaching, pretests, consultations, and gamification contributed to higher engagement and 7.3% increase in weekly active users.

Mobile 2018

Zenwel Biz App

Developed reservation software utilizing Kotlin.

Kotlin

Optimized booking and inventory for beauty and fitness businesses.

Education

Foundations

UIN Sunan Kalijaga - Indonesia, Yogyakarta

Bachelor of Computer Science, 3.40/4.00

Aug 2016 - May 2020
  • Received the full Bidikmisi Scholarship for academic excellence from the Indonesian government during university studies.
  • Collaborated as a member of the Google Developer Student Club on the development of an audiobook app for individuals with disabilities.

Contact

Collaborate on the next build

Ready for AI-native apps, premium marketing sites, or large-scale telco experiences. Let’s build the next standout release.

My Resume