# Zachary Lim

> Software Engineer @Open Source

Location: New York, New York, United States
Profile: https://flows.cv/zacharylim

Experienced full-stack JavaScript, Java, and Python developer working on the open source library Socket League, a custom React Hook utilizing WebSockets to transmit and synchronize application state developed under tech accelerator OS Labs (opensourcelabs.io).

Socket League available to download here: https://www.npmjs.com/package/socket-league-client

Please check out my YouTube video introducing the NPM library I'm working on, Socket League! https://www.youtube.com/watch?v=iNiKbPLECRY

## Work Experience
### Software Engineer @ Socket League
Jan 2021 – Present
• Designed an NPM library building off the ReconnectingWebsocket library to provide a custom React Hook allowing multiple clients to synchronize component and state updates for UI implementation or debugging, supported by a lightweight, rapidly implementable Redux-like unified state store spanning client, server, and database
• Leveraged NoSQL and SQL databases to store couplings of user sessions and application states in a central location so that multiple clients can be coordinated by a single store of state as well as a TypeScript interface for custom drivers to implement
• Verified API functionality and scalability with unit tests via Jest and Puppeteer for backend, frontend, and end to end testing, including designing a proprietary mock websocket client and server to promote application scalability and alert devs on breaking changes during feature development
• Documented the guidelines for using the NPM library using JSDoc to communicate to users the entry points in our API, thereby lowering barriers to entry and increasing adoption
• Ensure that the library maintains stable functionality across version updates with Github Actions to standardize the endpoint API so that breaking changes are captured before deployment
• Product developed under tech accelerator OS Labs (opensourcelabs.io)

### Echo Server | Websocket Powered Electron Chat Application @ Open Source
Jan 2022 – Present
• An Electron application designed to utilize the bidirectionality of websockets for dynamic and rapid client-and-server side data flow in order to maintain a single unified state store, optimizing dev experience by minimizing debugging time
• Implemented three database solutions (JSON, SQL, NoSQL) to store incoming messages and other user setting changes to make the application database-agnostic, providing multiple possible solutions for users
• Relied on a custom React Hook to abstract logic away from components and synchronize data flow and application state across clients with the database, with benefits for tracking client state and debugging, designing tests, and latency

### uSpot | A Spotify Search Chrome Extension @ Open Source
Jan 2022 – Present
• Leveraged embedded React components in a Chrome extension supported by a backend connected to user and developer profiles via Spotify API to make search and playlist calls to Spotify to improve UX by reducing interruptions to user browsing flow

### Password Vault | React Password Store Single-Page Application @ Open Source
Jan 2021 – Present
• Utilized React Router and conditional rendering to segregate authentication and CRUD UI while avoiding UX detriments from page refreshes

### Regulatory Analyst @ Citi
Jan 2016 – Jan 2021 | Long Island City
• Increased process efficiency in the local VBA-oriented environment by automating data collection and report generation through the creation of VBA scripts, as well as SharePoint forms and queries,, often reducing hours of manual data entry to mere clicks
• Designed Microsoft Access databases using VBA and Access SQL to ensure that data collected from the entirety of Citi’s trillion dollar global operations spanning hundreds of discrete, disparate operating units were stored in an ACID-compliant manner as well as maintain cross compatibility with other pre-existing Citi applications

### Clerical Intern @ TransCare
Jan 2015 – Jan 2016


## Education
### Master of Arts (M.A.)
Harvard University

### Master of Science - MS
St. Francis College

### Bachelor of Arts (B.A.)
Dartmouth College


## Contact & Social
- LinkedIn: https://linkedin.com/in/zachary-zhengyi-lim

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Source: https://flows.cv/zacharylim
JSON Resume: https://flows.cv/zacharylim/resume.json
Last updated: 2026-04-13