# Jiyoung Lee > Software Engineer @ IBM Location: San Francisco Bay Area, United States Profile: https://flows.cv/jiyoung Passionate software engineer specializing in React, Node, JavaScript, and TypeScript. Co-creator and developer @ nVision, an open source Next.js dev tool that provides observability for server-side network activity. Portfolio Website: https://www.jiyoung-lee.com GitHub: https://github.com/jiyoungglee ## Work Experience ### Front End Software Engineer @ IBM Jan 2023 – Present | San Jose, California, United States ### Software Engineer @ nVision Jan 2023 – Jan 2024 A Next.js dev-tool providing real-time insights on server-side network requests and route visualization • Provided enhanced observability to help developers identify bottlenecks, reduce latency, and enhance overall reliability of Next.js applications by creating custom OpenTelemetry instrumentation. • Enhanced the maintainability of Next.js routing systems at scale, by creating data visualization models using D3 and Material UI. • Dynamically processed a variety of spans from trace data through middleware in Express server to transform complex data into valuable insights used to enhance debugging and optimize client application. • Enabled real-time monitoring of server-side network activity using WebSockets for bi-directional data communication. • Integrated TypeScript to streamline the development process and reduce production errors through strict type-checking for early error detection during compilation time vs runtime. • Launched open source product under tech accelerator OSLabs, fostering collaboration and community driven innovation. ### Full Stack Developer @ Hotswaps Jan 2022 – Jan 2023 • Optimized user favorites fetch times by 30% by implementing SQL linking tables and refactoring complex join queries within Express API endpoints to save and fetch favorited listings. • Improved UX and page flow by adapting to different screen sizes and devices, ensuring a consistent and user-friendly experience on mobile/desktop for user settings page using ReactJS and Tailwind. • Implemented rate limiting through UI feature controls and customized error handling, to effectively mitigate excessive API calls, reducing server load and optimizing AWS RDS usage costs. • Clearly documented comprehensive onboarding and workflow processes to improve the integration of new engineers into the team and reduce future technical debt. ### Bagpack | Software Engineer @ Open Source Jan 2023 – Jan 2023 A travel organization application for managing packed items across various trips and bags • Utilized React to create reusable components and leveraged JSX syntax to improve readability, promoting future flexibility for enhancements and streamlining the development process • Leveraged MongoDB to store and retrieve user data with hierarchical data views, leveraging its flexible document-oriented data model and support for nested data to facilitate an evolving model during development • Implemented nested routes with React Router to create a dynamic single-page application (SPA), enabling smooth client-side routing without page reloads between different views ### Social Feed | Software Engineer @ Open Source Jan 2022 – Jan 2023 An open community for users to share posts and interact with others • Employed Passport.js local strategy with Express crypto and express-session middlewares to implement user sign-up/authentication with persistent sessions and expiration, ensuring secure user profiles and activity tracking. • Architected Node.js/Express server to set up API routing for multiple endpoints, facilitating CRUD interactions with the database, and leveraging Express's modularity to ensure flexible request handling while securing user interactions. • Utilized React hooks and useContext store to develop reusable and organized UI elements for a lightweight state management solution, reducing code complexity and enhancing maintainability by preventing prop drilling. ### Associate, Technical Project Lead Analyst (Reference Data) @ Brown Brothers Harriman Jan 2018 – Jan 2022 • Successfully automated SRD II Shareholder Identification and maintained compliance through proactive technical issue resolution by collaboratively troubleshooting with engineers to debug JSON data and resolve API errors. • Spearheaded requirement analysis/documentation, UAT, and implementation of system enhancements to standard settlement instruction (SSI) reporting tools in alignment with industry/market best practices and client feedback. • Onboarded new clients on the GC Direct platform, leveraging API-based communication to integrate with account management systems, significantly reducing settlement errors for 57% more accounts and 77% more SSIs. ### Research/Data Analyst @ Arbella Insurance Group Jan 2017 – Jan 2017 | Quincy, MA • Created a data dictionary for commonly used data fields across the firm to mitigate risk of improper usage or access • Conducted competitive research using multiple tools and resources to analyze insurance products, pricing methodologies, rates, rules, and underwriting guidelines • Researched a variety of topics regarding data governance such as ISO security classification of PII and master data management, and applied it accordingly to the enterprise data based on usage and exposure • Constructed graphical representations of data and analyses to present to other team members and departments • Analyzed impact of IoT on insurance industry through independent market research and competitive analysis to present proposal for potential innovations in alignment with firm’s strategic goals ## Education ### Bachelor's degree in Management Information Systems, General Rutgers University ### Management Information Systems in General Northeastern University ## Contact & Social - LinkedIn: https://linkedin.com/in/jiyoung-g-lee --- Source: https://flows.cv/jiyoung JSON Resume: https://flows.cv/jiyoung/resume.json Last updated: 2026-03-29