Impact Projects Leadership Career Skills Speaking Contact KO
Open to Opportunities

Tech, Data, Organization
Connecting them to drive growth

I'm Insu Jang, a Lead Mobile Developer.
From Samsung Galaxy platform to Baemin Food with millions of MAU, 17 years of driving data-driven UX improvements and team productivity across diverse service scales.

🤖 AI-Powered Dev 📱 Jetpack Compose 🎯 Data-driven Curation 🏗️ Multi-Module Arch
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Core Impact

Measurable results from services with millions of MAU

🔍

Search Home Revamp

User churn reduced · Browse efficiency improved

Fundamentally improved browsing experience by separating food/commerce and introducing personalized recommendations

🎯

Personalized Curation

Conversion rate up · Order share growing

Improved business metrics through segment-targeted curation including top reviews and restaurant rankings

📊

Log Integration

Analytics accuracy improved · Ops cost reduced

Built data-driven decision environment through AOS/iOS log unification and Kotlin refactoring

⚡

Compose Migration

Build · Dev speed · Stability all improved

Dramatically improved dev productivity through full Jetpack Compose migration and multi-module architecture

Featured Projects

Key projects led over the past 3 years

검색홈 개편

2023 - 2024Baemin Food
▾
  • GPT-based store discovery UI and search home
  • Dynamic category UI experiment framework
  • Food/commerce separation + personalized recommendations
  • A/B test-based data validation process

✓ User churn reduced and browse efficiency improved

Jetpack ComposeMVVMA/B TestPersonalization

Curation System

2025 - 2026Baemin Food → Curation Team
▾
  • Action-based curation and personalized recommendation
  • Top review curation system
  • Restaurant ranking curation
  • Conversion improvement through segment targeting

✓ Conversion rate up and order share continuously growing

Jetpack ComposeSegment TargetingPersonalizationCuration

Architecture & Quality

2023 - 2025배민푸드
▾
  • ShopImp log AOS/iOS unification
  • App log library Kotlin refactoring
  • Full Compose migration and UI enhancement
  • Review modularization and Compose migration
  • Multi-module architecture design

✓ Build time, dev speed, and app stability all improved

Multi-ModuleJetpack ComposeClean ArchitectureKotlin

Leadership & DX

Proactively driving tech leadership and team productivity

AI MCP Adoption Guide

2025 · AI Tools Standardization

Created Context7 MCP and Figma MCP adoption guides for mobile team after Cursor adoption. Standardized team environment with mcp.json.

Context7 MCPFigma MCPCursor

CodeRabbit Adoption

2025 · AI Code Review

Introduced CodeRabbit to the team and shared best practices, improving both review quality and speed.

CodeRabbitAI Code Review

Ktlint Custom Rule - IfBracesRule

2024 · Code Quality Automation

Mandatory braces when condition and statement on different lines. autoCorrect support, RuleSetProviderV3-based JAR.

KtlintRuleSetProviderV3

Android Lint Custom Rule - HtmlStringNaming

2024 · 코드 품질 자동화

Rule checking unnecessary type info in variable names. UAST, PSI, LightClassGenerationSupport with Kotest testing.

Android LintUASTPSI

Dev Productivity Tools

2024 · DevEx

Improved team workflow with MR notification system and Flipper debugging tool.

FlipperMR Notifications

Career Timeline

Platform → Mobility → FoodTech → Curation, a 17-year journey

2026
Curation Team · Top review/restaurant ranking curation, segment targeting
2025
Baemin Food · Review modularization, AI MCP, CodeRabbit, Lint automation
2024
Baemin Food · Search home revamp, Compose migration, productivity tools
2023
Baemin Food · GPT search home, log integration, UI experiment framework
2018
Baemin Market (now B-Mart) · Early service build and launch, helping expand Beyond Food with delivery-commerce experience · 📰 B-Mart story
2017
Woowa Brothers · Baemin Riders Team · Worked on a millions-of-MAU service · Rider meet-and-pay Native migration · RN BROS app platform unification (PL)
2017.06 — 2017.09
Connected Car
Hyundai Capital (DealCar) · Built a new-business Connected Car Android app, integrating vehicle-control capabilities and the full location-based delivery/return flow into one mobile experience.
2016
Ownership
SOCAR · Drove the full renewal of the car-sharing app and the WebApp → Native migration. In particular, led and built the Control Pad feature solo, making critical actions like extending a return fast and accessible in-app · 🖼️ Control Pad image · 📰 Promo post
2015
Dreamplus (Hanwha) · Leisure information curation service, selected as Apple "Best Apps of 2015" · 📰 Article · 🏆 Award
2014
Lassoh · Canadian startup, location-based social network app · 📹 Demo · 📄 App intro
2010
Sam*SDS(O*enTi*e) · Samsung Galaxy default apps, deployed to tens of millions of devices · 📰 Drive Link
2009
Innophilia · Pantech Sirius Android UI Component and 3D UI development · 📺 KTV · 📰 3D UI collaboration
2003
L*CNS(N**System) · LG group HR systems and Oracle ERP integration · 📄 JDF Framework

Skills

Modern mobile engineering capability and AI-powered development workflows

Language & Framework

KotlinJavaJetpack ComposeCoroutinesFlowHiltRetrofitRoomRxJava

Architecture

MVVMMVIClean ArchitectureMulti-ModuleNavigation ComponentPaging 3

AI Workflow & Tooling

I use AI beyond tool familiarity — designing MCP-based environments, operationalizing AI code review, and connecting generative AI to day-to-day development throughput.

CursorClaude CodeGemini Code AssistOpenCodeCodeRabbitContext7 MCPFigma MCP

DevOps & Quality

JenkinsTravis CIFirebaseAndroid LintKtlintJUnitEspresso

Speaking

Sharing experiences in tech communities

2019

DroidKnights - Flutter and Native Module Communication

Track 3 - Communication between Flutter and Native modules baby step
2018

GDG DevFest Seoul - Flutter 101

Getting started guide for Flutter beginners
2018

DroidKnights - Travis CI와 Docker 기반 Jenkins를 이용한 Android CI/CD

500+ audience - Android CI/CD pipeline adopted by multiple teams
2016

GDG Korea Android - Subject in RxJava

Types and usage of RxJava Subject
2011

Android Drawable 완전 정복

Deep dive into Android Drawable system

Contact

Feel free to reach out if you have any questions.

✉️ isjang98@gmail.com 💼 LinkedIn
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