Heggy smile

Heggy CastaƱeda

Creative Technologist with interest in REST API, PERN stack (Postgres, ExpressJS, React, NodeJS)

I am passionate about social good and believe that sharing means caring.


MovieDB Rest API Look up my favorite actor's list of movies and compare who played in most movies.

  • Graceful asynchronous programming using Fetch, Async/Await, Promises, Error Handling
  • Create helper functions that does one thing well and one thing only. This modularized code and reduce redundancy.

JS Conference Talk: a place where users could watch videos and submit a contact form.

  • User-friendly feature: form auto-clear, sticky form.
  • RegEx Form validation.
  • Web security feature: preventing cross-site scripting (XSS) attack by scrubbing data with scrubInput function.

Parallax: a fun project that uses Math to manipulate images' position.

  • CSS absolute positioning using viewport width and height.
  • When the window loads jQuery's .mousemove() method listens for movement of the mouse. This calls mouseMove() function which gives parallax effect.

YelpEat: a restaurant review web app that incorporates accessibility ("a11y") for diverse users for diverse screen sizes with various network speeds.

  • Read an existing code base and add new features ie: Responsive for any viewport displays, color contrast checker by Webaim.
  • Increase performance of the site by registering service worker
  • Make the site accessible by adding ARIA roles, skip to main link, ALT Text for images

Work Experience

Front End Developer


May 2019 - Feb 2020

  • Built reusable React components design system library with Storybook in an agile team.

Freelance Web Developer

Freelance Web Development

Jan 2019 - May 2019

  • Developed mobile-first responsive small business lawn care website.
  • Grew customer base by setting up social media presence on Yelp.

Check out my complete work history on LinkedIn.


Digital Craft

Fullstack certificate, Aug 2021

Modern JavaScript Framework: PERN Stack

UCSC-Ext at Silicon Valley, CA

Internet programming certificate, 2018

JavaScript frameworks

UNC-Chapel Hill

B.S. in Mathematics Decision Science

Operations Research, Statistics, Linear Algebra