California, United States - Implemented an AI-driven stock and crypto market data analysis service, delivering insightful market analysis based on realtime market, stock, crypto data to subscribers by LLM Model - Designed and created a microservice architecture, ensuring high availability and scalability by utilizing Kubernetes and implementing backup clusters for service continuity. - Developed and deployed backend and frontend applications, achieving seamless integration and efficient deployment using Python Flask, React, and Kubernetes. - Implemented a message queue system, ensuring reliable data transfer and processing by using Apache Airflow for cronjobs and DLQ for handling message queue failures. - Added a Stripe payment module, enabling subscription payments and increasing MRR & Monetized by utilizing React and Python.

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San Francisco Bay Area • Accepted into Fellowship focused on professional development through personalized coaching from seasoned top-tier software engineers from Apple, Google, Meta, Airbnb, OpenAI, etc.. • Completing intensive training to master computer science through coding exercises through independent study, pair programming, and small mentor-led groups. • Studying system design fundamentals led by senior engineers from top companies, comparing and contrasting concepts in modern web-based applications. @InnerCircle - Private Social Network Service Application • Created InnerCircle application with Conccurrency, SwiftUI and Swift, It provides Live broadcast using Nginx-RTMP, HLS and audio realtime social network service(ex. Clubhouse) using Amazon IVS(Webrtc), websocket, and Newsfeed that consist of posts contain images and video, audio, and text. Implemented translate language using AWS AI Translate and used AWS Loadbalancer, S3, Route 53, EC2, RDS with NodeJS. And In order to Notification feature, implemented Notification with services using RabbitMQ. • Increased backend performance by 50% in terms of capacity, response, and request time by scaling the backend infrastructure and optimizing the existing codebase and Enhanced app UX/UI by implementing the backend with Golang gRPC and restructuring the client architecture using the MVVM design pattern with SwiftUI and gRPC-Swift.

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San Francisco Bay Area

United States (Remote) 미국 실리콘밸리 이주 (San Jose, CA)

- Collaborated with 3+ iOS Engineers and 4+ Backend Engineers on implementing GetStock, an iOS app trading unlisted private company's stock by using SwiftUI, Combine, and MVVM with Customized Clean-Architecture, resulting in the app: https://apps.apple.com/kr/app/id1639318189. - Implemented security data pipeline by Integrating various security libraries, such as app integrity prevention library ‘AppIron’ from Secucen, self-authentication library, keyboard security library ‘TouchEn mTransKey’ from ‘Raon Secure’, and bank certificate library ‘KOSCOM’ and their reusability by converting Objective-C code to Swift and SwiftUI, and add a security module to protect bank authentication, login, and trading password by removing memory garbage values by resulting in reduced maintain resources. - Led the iOS team in maintaining the ZUM iOS app and GetStock iOS app, as implemented by designing and reviewing code based on the priority merge rule 'Pn Rule' with iOS Team Members, collaborating with the design and Android teams to implement a mobile UI design system, reviewing code, and assisting the backend team in using design patterns and Jira tool. - Improved team workflow efficiency by collaborating with 3+ iOS Engineers with Gitflow strategy by adding automation CI/CD using SwiftLint, Fastlane, and UnitTest. - Integrated Firebase RemoteConfig, Analytics, Crashlytics, and API request/response monitoring library to solve potential problems with Backend Team.

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