Deokhwa Lee

Delightroom
A wellness platform behind Alarmy, a global alarm app with over 82 million downloads and top rankings in 97 countries, dedicated to helping users sleep better and wake up refreshed.

iOS Alarm Logic & App Stability

• Refactored legacy alarm logic to improve performance and prevent memory leaks
• Modularized outdated code for better maintainability

Data Synchronization

• Led large-scale data migration and established client-server synchronization
• Redesigned data structure and implemented sync logic

Anti-Cheating Alarm Service

• Integrated Stripe for card registration and payment
• Designed anti-cheating logic

Sleep State Analysis

• Applied TensorFlow-based ML models for sleep analysis
• Built data pipelines and visualized results

Login Module Development

• Developed login flow with Apple Authorize and Alarmy Server
• Ensured GDPR compliance with didomi SDK

Other Improvements

• Modularized code with SPM, removed unnecessary dependencies
• Adopted Clean Architecture and transitioned to SwiftUI + TCA
• Streamlined localization with SaaS tools (e.g., Lokalise)
• Automated build/test pipeline with GitHub Actions
• Introduced developer mode for managing Feature Flags and QA environments

Naver Whale Team
Naver Whale is an innovative web browser platform by Naver, offering advanced user experiences, real-time collaboration tools, and seamless integration with various Naver services.

Whale (Web Browser)

• User Experience Enhancements: Face ID-based Browser Lock, Easy WebNavigation optimization (New Tab, Easy Close, Three-Finger Gesture, one-handed browsing)
• Development Environment: Added developer mode and debug logs, built Whale Log framework for user behavior analysis
• Core Modules & Logic: Applied design system, migrated History/Bookmark synchronization to Web Socket, improved performance for password management and downloads, collaborated with Naver Login SDK team to manage cookies and enhance authentication flow

Whale On (VoIP via Whale)

• Real-Time Communication: Implemented Web Socket-based features for chat, state management, user presence, and health checks, introduced video solutions
• API & Framework: Designed and separated API structure, modularized framework for better maintainability
• Memory & Performance Optimization: Fixed memory leaks, improved app performance, established Swift coding conventions and introduced MVVM architecture

Buxi is an airport pickup mobility service.

• Working with Google Maps-based maps using UIWebView
• Communicating real-time location to drivers and guests with Web Socket
• Implementing chat between drivers and guests with SendBird SDK
• Implementing foreign guest translation functionality with Google Translate SDK
• Integrating domestic and international payments with IAmPort/PaymentWall

Mic-impact Studio is a first-generation coworking space in South Korea.

Cost Savings

- Reduced maintenance costs by 20% by reforming existing inefficient systems.

Branding & Marketing

• We partnered with several startups, publishers, and other businesses that needed publicity, generating an average of two talks a week.
• Worked with a legal services startup to connect pro bono legal advice services within the space.
• This led to natural promotion of the space and sales of the space.
  

Space Consulting

• Played a consulting role in the space configuration of a startup support center in Korea.
  

Through these methods, we doubled our revenue and reached BEP