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Agita Firstawan

@agitafirstawan

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I build scalable web, mobile, and backend products for enterprise-scale teams.

Indonesia

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What I'm looking for

I'm looking to build scalable, business-critical web, mobile, and backend products where I can lead delivery, improve performance and reliability, mentor engineers, and collaborate closely with cross-functional teams.

I've built production web, mobile, and backend systems across Cakap, Edgeworks, Selleri, Ralali, Codemi, and Software Seni.

At Cakap, I lead delivery across AI Roleplay, Multi Leaderboard, certificate export services, and Angular modernization. I reduced AWS infrastructure costs by 30%, Hetzner costs by 60%, and improved WordPress performance scores from 60 to 90.

I build React, React Native, Next.js, Angular, and Node.js applications with reusable components, secure APIs, performance optimization, and maintainable architecture. My work includes fintech KYC and payment features, social commerce products, AI chat, real-time chat, inventory systems, and gRPC services.

I've led frontend teams, conducted code reviews, mentored junior engineers, shipped apps to Google Play and the Apple App Store, and worked closely with product, design, backend, operational, and marketing teams.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead

Current

Cakap

Jun 2026 - Present (3 months)

Leveraged AI tools to improve coding efficiency and implemented backend services for certificate editing and HTML-to-image generation. Reduced AWS infrastructure cost by 30% and Hetzner cost by 60%, and improved WordPress performance score from 60 to 90.

AI Tools Backend Services Html To Image AWS Hetzner WordPress DigitalOcean Google Workspace

Current

Senior Frontend Engineer

Current

Cakap

Jan 2024 - Present (2 years 8 months)

Migrated legacy Angular applications to the latest version, improved code quality, and resolved critical bugs. Built a custom deep-linking service and developed an AI chat system to enhance student support.

Angular Deep Linking Chat Component Libraries Technical Documentation

Senior Mobile Engineer (React Native)

Edgeworks

May 2023 - Dec 2023 (7 months)

Refactored and improved existing mobile application codebase, built reusable components, and optimized performance. Released applications to Google Play Store and Apple App Store and integrated Sentry for error tracking.

React Native Sentry Hygen Code Review Performance Optimization app store

Frontend Engineer / Frontend Lead

Selleri

Nov 2020 - Mar 2023 (2 years 4 months)

Built a social commerce MVP for SMEs and resellers from scratch, delivered features on time, and optimized web performance. Led the frontend team, managed tasks on Jira, and implemented Storybook for component documentation.

React Next.js Storybook Jira Code Review Unit Testing Performance Optimization

Senior Mobile Engineer (React Native)

Ralali

Oct 2019 - May 2020 (7 months)

Built fintech features (KYC, payments) for production systems, ensured on-time delivery and feature stability. Led code reviews, performance optimization, and mentored junior engineers.

React Native KYC Payments Code Review Performance Optimization Unit Testing Storybook

Mobile Engineer

Codemi

Jan 2018 - Dec 2019 (1 year 11 months)

Built and optimized high-performance React applications, integrated third-party video and real-time chat services. Improved application stability through bug fixes and refactoring, and increased performance using React memoization.

React React Native Memoization Component Libraries

Frontend Engineer

Software Seni

Jan 2018 - Dec 2019 (1 year 11 months)

Built React Native mobile apps and React PWA websites, delivered projects on time, and maintained client apps. Troubleshot issues and improved application stability.

React Native React PWA Troubleshooting Client Management

Freelance Frontend Developer

Kementerian Kesehatan

Developed and delivered a surveillance service feature and an infectious diseases dashboard for monitoring and reporting.

Nuxt.Js Vue.Js Data monitoring Dashboard Development

Freelance FE Developer

Satu SDM Polri

Resolved issues within User and Role Management modules, integrated the Pembinaan Jasmani Polri API, and implemented optimized access management.

Next.js User Management Role Management API Integration

Freelance Frontend Developer

JPT

Resolved existing bugs to enhance system stability and designed and implemented requested features for Courier and Collector modules.

Vue.Js

Fullstack Engineer

Better Social

Developed reusable components and utility functions, optimized chat performance with SQLite, and managed app releases to Google Play and Apple App Store. Implemented real-time data synchronization using WebSocket.

React Native SQLite WebSockets Unit Testing App Store Deployment