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Hi there πŸ‘‹

I am a Java β˜•οΈ and TypeScript🟦 developer and I Like raw SQL! I am Passionate about Data, Backend, Performance! Always found it fun to process data, building SaaS products, and becoming a Data engineer is my goal.

Who Am I?

  • 🌱 Currently learning Spring boot React Data & Structures & Algorithm
  • πŸ”¨ Building my secret full-stack Java and TypeScript web app
  • ⚑ Fun fact, I used to be a head chef and still love cooking πŸ₯˜!

Contact Me

Work Experience

Freelance Developer @ GreyTee Software Ottawa, Canada

πŸ“… 10/2023 - Present

Sample Project (no login required)

Job Description:

  • Design, build, and deployed a distributed synchronized timer for a Cafe in Montreal.
  • Managing the frontend state across multiple component across the app, while connecting to websocket without memory leak.
  • Used SvelteKit for the full stack development, Firebase for realtime database for websocket and updates, styled with TailwindCSS.

Frontend Developer @ Snaildy EducationHong Kong, Hong Kong

πŸ“… 01/2023- 08/2023

  • Parsing over 1400 lines of CSV into MongoDB database
  • Dashboard development for monitoring over 30 schools in TypeScript, Svelte, TailwindCss, MongoDB
  • Managing attendance rate calculations in the controller, marketplace quotations with MongoDB aggregate functions, and NodeJS AWS lambda, SQS, SNS services, etc.
  • Started as an independent developer, worked closely with outsourced developers and took the initiative to refactor.
  • Collaborate with the UI/UX designer and deliver the features and components on schedule.
  • Used Svelte, MongoDB, and deployed on AWS Lambda

David Ko's Projects

airbyte icon airbyte

Data integration platform for ELT pipelines from APIs, databases & files to warehouses & lakes.

breakfast icon breakfast

a daily scrape of business news as my breakfast

dailyupdates icon dailyupdates

Daily news aggregator for top 20 headlines from BBC, CNN, Finviz, or any of your choice.

hertzbeat icon hertzbeat

An open source, real-time monitoring system with custom-monitoring, high performance cluster and agentless. Support monitoring web, database, os, middleware, cloudnative, network and more.

java_http_server icon java_http_server

Building a mini HTTP server from scratch in Java, best way to learn Java Networking, Multithreading, Input/OutputStream and how HTTP server and routing works.

spring-ai icon spring-ai

An Application Framework for AI Engineering

volume_calculator icon volume_calculator

A volume calculator for practice how to use interface, abstract class, Scanner, and StringBuilder

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