👋 Hi there, I'm Haejin (think like, "hedgin' your bets").

I'm a software engineer with a passion for product, tech, and communication that makes life easier.

In the past, I've worked on creating a better developer experience with Reactime (a DevTool for time-travel debugging Redux-less* React apps). So, if you want to chat, I encourage you to reach out.

• 🌱 I’m currently working on ...

  • product development at HackerOne
  • some TBA side projects

• 🌱 I’m currently learning ...

  • generative media workflows (Hailuo Minimax, ElevenLabs, Kling AI, GPT, Gemini AI Studio, ComfyUI??, etc.)
  • LLM architecture and design patterns (Model Context Protocol, LLM as judge, Attention etc.)
  • ethical hacking strategies (PortSwigger/Burpsuite)
  • all things business and finance

Always interested in new tech to make for more efficient, more maintainable software and business.
Below are some of my trusty tools:

• Javascript - quirky, lovable, prolific, very poorly named
• Typescript - a superset of Javascript that brought strong typing to web development

• Rails - Ruby bootstraps
• Laravel - PHP bootstraps

• Jest - Delightfully readable and feature-rich assertion framework to create unit tests in pure isolation
• React Testing Library -

Below are things I've used in my own projects and whose value I can attest to.

• Redux - Structured wrapper around your app to "connect" any component to a global state (Note: use wisely)
• Redux Toolkit - Organize verbose boilerplate and reducers into neat "slices" and more!
• immer - Skip the functional ceremony, and just mutate state directly! (but not really)
• Webpack - Module bundler
• axios - Clean interface for making HTTP client requests
• Lodash - Neat utility to boost your ability to write clean, effective JS operations