Mark Lee Email & Phone Number

● Lead developer for Jonah Direct, a centralized platform that tracks and manages assets for default portfolios.● Handle new feature development and improvements that arise from client requests and those of potential clients.● Migrated the backend of our CSR application to SSR on NextJS with persistent caching, improving the initial load time by more than 40% for portfolios with tens of thousands of loans.● Improved landing page ranking and visibility by focusing on different mobile formats, expanding semantic keywords, and increasing page speed through lazy loading and optimizing images.● Work with my managers to better prioritize tasks in the pipeline and lead standups a couple times a week.● Managed a small project for short-term interns that involved incorporating ChatGPT into internal data analysis.● Incorporated Dagster into our data pipeline to better organize our orchestrated tasks and automate the entire flow of report generation for various clients.● Implemented custom Context components, which was immediately noticeable in cutting down the paint time of the app by almost half.● Collaborated with our new designer to visually revamp the app with a greater focus on the user experience.● Spearheaded a 2 week sprint to increase test coverage from 32% to 90%, logging and fixing bugs throughout the process.● Wrote documentation for the codebase and created wiki pages for an easy transition for new developers

• Led a team of 3 developers to create an open-source library for rapid development of real-time REST APIs, along with tools for input validation, request caching and state synchronization.• Developed a scalable testing tool akin to Postman, with the ability to test the library’s custom methods and allowing for new feature testing and integration throughout the development process.• Created custom HTTP methods and integrated WebSocket and SSE streaming protocols, allowing clients to automatically receive state updates to subscribed resources across a cluster of server nodes.• Integrated WebSocket and SSE streaming protocols by creating interfaces to allow clients to automatically receive state updates to subscribed resources across a cluster of server nodes while abstracting networking logic from business logic.• Constructed decorators to ensure data validation and error handling, optimizing performance and security for the user.• Integrated PostgresQL and MongoDB data stores through library extensions to more easily define database resources.• Employed NodeJS testing libraries (Jest, SuperTest, Websocket Mock) and test-driven development to build a comprehensive testing suite to ensure seamless feature integration, code integrity and functionality.• Ensured a code testing coverage of 100% for integration and end-to-end tests using Jest and Enzyme, which helped identify 20+ bugs during shakeout tests.• Created a CI/CD pipeline for our testing environments using AWS and Docker. Our end-to-end testing environments were built in React and NodeJS

• Utilized VBA in Excel to create custom macros and loops to organize and automate schedules, payment, and contact information.• Taught SAT prep and high school-level math for anywhere between 4 to 16 students, with a strong focus on developing mental models and problem-solving strategies.

• Managed and maintained a relational database by handling CRUD functionality on income, payroll, and expense transactions.

Accounting

Accounting