# Ingyu Woo > Senior Software Engineer Location: Redmond, Washington, United States Profile: https://flows.cv/ingyu ## Work Experience ### Senior Software Engineer @ RealSelf Jan 2022 – Present Led the development and launch of an AI chatbot within two months, utilizing OpenAI LLM APIs, Retrieval-Augmented Generation (RAG) techniques, and vector database integration to ensure precise responses using RealSelf data, and streaming AI answers using WebSocket. Led the integration of Instagram for medical providers to display content on RealSelf profiles, meeting tight deadlines, supporting the sales team post-launch, and driving business page sales after the deprecation of the previous integration. Redesigned medical provider business profiles on RealSelf, improving user experience, aligning with stakeholder objectives, and generating $6K in new MRR while earning positive feedback from the sales team for boosting sales performance. Launched a new Ad product generating $5K in MRR, collaborating with Product, Design, Sales, and Analytics to streamline objectives and deliver a successful launch. Presented multiple technical talks to the engineering organization, including topics on AWS OpenSearch, search indexing pipelines, and leveraging Builder.io for static and dynamic page creation, fostering cross-team knowledge sharing. Mentored engineers across teams to enhance search-service functionality, guiding the development of endpoints and supporting data integration into pipelines, search indices, and user-facing applications. ### Software Engineer @ RealSelf Jan 2020 – Jan 2022 Owned the team’s primary infrastructure migration, becoming a subject matter expert while completing the Elasticsearch migration from AWS EC2 to OpenSearch and updating APIs for the new infrastructure. Led the decommissioning of the third-party search service Algolia, saving $120k annually, and the EC2-hosted Elasticsearch, saving $20k annually, while collaborating with the Infra team to clean up related infrastructure. Migrated 18 cron jobs from AWS ES2 to AWS ECS, collaborating with the Infra team for the new infrastructure transition, and guided engineers across the company in migrating cron jobs by conducting pair programming sessions and providing a comprehensive how-to document. Mentored 2 new team members and 2 rotating engineers by leading 1-1s and maintaining the team’s infra overview documents. ### Software Engineer @ HazAdapt, Inc. Jan 2020 – Jan 2020 | Corvallis, Oregon, United States ### Graduate Teaching Assistant @ Oregon State University Jan 2019 – Jan 2020 | Corvallis, Oregon, United States CS 344 Operating System I Assisted students in debugging and grading assignments using Bash, C, and Python: bash scripting, multi-threading, multi-processing, and socket networking ### Back End Developer @ HazAdapt, INC. Jan 2019 – Jan 2019 | Corvallis, Oregon Area Led, architected, and implemented a GraphQL API using TypeScript, and MongoDB for HazAdapt which is on track of being adopted by OSU for campus emergency management system. Set a linux server on AWS and configured reverse proxy to serve three apps using NginX. Wrote a bash script to automate application deployment, reduced the time by 1/2. ### Full Stack Engineer @ OSU Center for Applied Systems and Software Jan 2018 – Jan 2019 | Corvallis, Oregon Area Refactored the SmarterBalanced open-source web app, serving 6 million students and 4,700 educators, with GitLab APIs using Java, Spring MVC, React, and TypeScript. Developed an open-source front-end web app for LinuxFoundation, used by open-source professionals, to fetch, convert, and present data conditionally based on user authentication and authorization using React and TypeScript. Created front-end web app components, wrote tests, and implemented markdown parsing logic to render tables dynamically using React and TypeScript. ### Full Stack Engineer @ 4Ones Inc. (천백십일) Jan 2016 – Jan 2017 | Seoul, South Korea Designed and developed a high-availability game league system supporting four games and 10,000 users, leveraging network load balancing, Spring MVC, and SQL Server. Created a game player matching service to evenly distribute players across available servers using Redis cluster, Node.js, Express, and JavaScript. Developed multi-tenant back-office websites for game management, enabling admins to update game configurations while restricting developers and designers to viewing player pages, using Spring MVC, Spring Security, and MySQL. Implemented RESTful APIs with Spring MVC and MySQL to facilitate seamless exchange of in-game currency between services. Designed and developed mobile-optimized event webpages from scratch using Spring Boot. ### Frontend Web Developer @ The Workshop - Inventors of play Jan 2015 – Jan 2016 | Seoul, South Korea Enhanced rendering logics for the replay player of web poker applications Bodog and Bovada using JavaScript and LimeJS. Built a memory matching card game using JavaScript and LimeJS from scratch. ### Back End Developer @ PayLetter Inc. Jan 2014 – Jan 2015 Built billing websites and payment Restful APIs using ASP.NET and SQL Server. Integrated websites with various Payment Gateways (PayPal, BitPay, PayOneQ, MatomyMoney, AdscendMedia, PaymentWall, and E-Prepag) using ASP.NET and SQL Server. Contributed to enhancing of GlobalCollect Report C# Application for FHLGames. ## Education ### Master of Science - MS in Computer Science Oregon State University Jan 2018 – Jan 2020 ### Bachelor's degree in Computer Software Engineering Sangmyung University Jan 2004 – Jan 2013 ## Contact & Social - LinkedIn: https://linkedin.com/in/ingyuwoo --- Source: https://flows.cv/ingyu JSON Resume: https://flows.cv/ingyu/resume.json Last updated: 2026-03-22