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System Migration

Large-Scale Migration Project
Legacy System Modernization

Supporting migration from legacy systems to modern tech stacks.
Achieved simultaneous modernization across Web, iOS, and Android platforms.

1M+ User Scale
0 Downtime
3 Platforms
60% Ops Cost Reduction
OVERVIEW

Project Overview

A large-scale project migrating legacy systems to modern Next.js/React/Kotlin/Swift stacks. Achieved zero-downtime migration for a service with over 1 million users.

AI-powered code conversion and phased migration strategy minimized risk. Improved user experience while achieving significant operational cost reductions.

CHALLENGE & SOLUTION

Challenges & Solutions

🔄

Zero-Downtime Migration

Challenge

Couldn't take down a service with 1M+ active users.

Solution

Phased migration with feature flags enabled zero-downtime cutover.

📱

Multi-Platform

Challenge

Required simultaneous modernization of Web, iOS, and Android.

Solution

Shared APIs and code sharing strategy synchronized all platforms.

🤖

AI Assistance

Challenge

Converting massive legacy codebase required too many man-hours.

Solution

AI-powered code conversion dramatically improved migration efficiency.

TECH STACK

Technologies Used

Python React Next.js AWS Kotlin Swift ChatGPT

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