📱 Overview

At CoStar Group, I worked as part of a dedicated Android team responsible for maintaining and evolving four consumer and professional real estate apps: Homes.com, Homesnap, Citysnap, and CoStar Mobile. Our goal was to modernize legacy codebases, deliver new user-facing features, and solve tough performance issues—at scale.

My work spanned architecture modernization, greenfield Compose-based features, sensor fusion development, and performance-critical debugging. It gave me deep experience collaborating across iOS, backend, product, QA, and design—all in a fast-paced Agile environment.

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🎯 Objectives

On Homes.com, our mission was to build a brand-new greenfield app from the ground up using modern architecture, design, and tooling. Key goals included:

• Replacing legacy Java/View apps with modern Kotlin + Jetpack Compose,
• Building a feature-rich app that supports home search, neighborhood exploration, and interactive experiences,
• Collaborating across a multi-platform engineering team to ensure architectural consistency and code reusability.

In parallel, I contributed to high-impact features and refactors across our existing apps.

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⚙️ What I Built

🏗️ Architecture & Refactors

• Modernization:
  • Refactored legacy Java/MVC code into Kotlin + MVVM + Jetpack Compose on Homesnap and Citysnap.
  • Rebuilt the Schools screen from the ground up with Compose.

🌱 Greenfield App: Homes.com

• Contributed to greenfield development using:
  • MVI architecture,
  • Jetpack Compose,
  • Koin for DI,
  • And a modular codebase for maintainability.
• Built and shipped core feature screens:
  • Schools, Neighborhoods, and Condos.
• Led development of the Snap Feature:
  • Fused camera, GPS, and IMU data to detect where the user is pointing.
  • Delivered a seamless “point-and-snap” experience to instantly surface property details based on user pose and location.

📱 CoStar Mobile – Enterprise App

• Led feature development for:
  • Professional Directory: Contact discovery and networking interface.
  • News Redesign: Modernized content system using reusable Compose components.
• Resolved a critical ANR issue related to map polygon rendering, involving:
  • Performance profiling,
  • Multi-threaded optimization,
  • Feature flag-based tuning, and
  • Real-time system testing to verify fixes.

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✅ Outcome

All four apps were actively maintained and shipped to the Play Store during my time at CoStar. I played a key role in transitioning multiple apps to modern architectures, while also shipping greenfield Compose-based experiences that blended sensor input with real estate data.

The Snap Feature was particularly impactful—delivering an intuitive, GPS/IMU-aware experience that felt truly native and immersive.

These projects reinforced my strength as a product-driven engineer who can both clean up legacy systems and build new experiences from the ground up. I learned how to own features end-to-end, collaborate across large teams, and ship software that blends UX, sensors, and performance.

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