Zhi "Z" Yin

Programmer. Used to be a surgeon.

zyinmd@gmail.com Washington DC

/ZYinMD /ZYinMD /ZYinMD

Stacks I've deployed

(recent first, bold = currently in production, @ = deployed at)
  1. Sveltekit2 @ Deno Deploy & DenoKV
  2. Deno in Docker @ Synology NAS
  3. Sveltekit @ Vercel
  4. Svelte4 & Svelte5 @ Github Pages with Github Actions
  5. Nginx in Docker @ AWS ECR & App Runner
  6. Nginx + Certbot in VPS @ AWS EC2 / Google Compute Engine / DigitalOcean Droplet / Linode
  7. Node @ Cloudflare Workers
  8. Node @ AWS Elastic Beanstalk
  9. Node @ AWS Lambda & API Gateway
  10. AWS Amplify with Cognito and Datastore (AppSync on DynamoDB)
  11. React + ReduxToolKit + Firestore JS client SDK + FirebaseAuth & App Check @ Vercel / Firebase Hosting
  12. Node / Express @ Google Cloud Function / Firebase Function
  13. React + ReduxToolKit @ offline devices
  14. Node in Docker @ Google Cloud Run
  15. Firestore server libraries @ Firestore Functions
  16. MongoDB & MongoDB Atlas
  17. SQLite @ local projects
  18. MySql @ Google Big Query
  19. Node / Express @ Google App Engine
  20. jQuery app + Express and MySql @ Heroku with JawsDB

Tools I use that weren't mentioned above:

(recent first, bold = currently using in production)
  1. modern web: ServiceWorkers, PWA, Workbox, IndexedDB, File System Access API, Broadcast Channel
  2. VSCode Dev Containers
  3. Stripe
  4. Google Cloud: Cloud Error Reporting, Cloud Schedular, gapi libraries
  5. Tooling & Testing: hand written rollup, hand written esbuild, Vitest, Jest
  6. Domain & DNS: AWS Route53, Google Domains (Squarespace Domains)
  7. BI: Google Analytics, Vercel Web Analytics, Tableau
  8. Adobe software: Pr Ai Au Ps Xd

Uncommon expertise:

  1. Chrome extension development
  2. Powershell
  3. AutoHotkey
  4. ffmpeg
  5. npm and jsr publishing
  6. scraping with Puppeteer / Playwright
  7. making VSCode themes
  8. publish PWA to WindowsStore, PWA to GoogleWorkspace (gsuite), TWA to Android

2017-2025, Zeeingsoft LLC

My one-person company, doing whatever projects that interest me. No freelancing.

1/10 of these projects end up becoming for-profit, but they make less than $50k per year combined. The cool way of saying it is "I don't do it for the money".

  • If you're a user, and you happen to want to download all your [ Likes / Favorites / Followings ] to MP4s for safekeeping, try this project (26k MAU), or the Douyin counterpart (31k MAU)
  • Else if you happen to be a user, check out this project. (150k MAU)
  • Else if you happen to play , check out this project. (1.2k likes on reddit)
  • Else if you happen to need to give a 6yo some math practice, check out this.
  • Else: instead of bothering you with another 20 niche projects, please look at this screenshot and imagine.

2019, Perficient

"Technical Associate". Worked on a Blue Cross Blue Shield web portal for 3 months, nothing fancy.

2017, watched some Demis Hassabis interviews

This was the time when I realized physicians will be replaced by AI, and I decided to jump ship.

2014-2016, USMLE exams

The lengthy licensing exams for doing residency in the US.

2013-2014, University of Rochester Medical Center

Registered nurse

2012, University of Rochester

A one year program for "2nd Bachelor Degree in Nursing". This was my initial means to enter America, as an international student.

Before 2012

Medical school at Fudan University, a top 5 in China.
Residency in Surgery, at a top teaching hospital affiliated to the university.

Fun Facts