Jeremiah Haidze

Front-end developer

I build fast, accessible websites and web apps.

I’ve been shipping production websites for more than six years. At Lull, that meant everything from campaign landing pages to a full Shopify migration. Most recently, I refactored a Vue customer portal for RYZE Superfoods. I care about pages that load fast, work for everyone, and are easy for the next developer to change.

Changelog

  1. The share card for this site: my name, my role, and three changelog version tags.

    v5.0This site

    2026

    A fast, accessible static portfolio built with Astro and deployed by GitHub Actions, written as a changelog.

    • Astro
    • TypeScript
    • CSS
    • Vitest
    • Playwright
    • GitHub Actions
    • GitHub Pages
    • Claude Code
    Details
    My role
    Sole developer, working with Claude Code as an AI pair programmer.
    Notes
    • Every push runs unit, browser, accessibility (axe) and Lighthouse tests. If any of them fail, the site doesn’t deploy.
    • The repo and its history are public. See the link at the bottom of the page.

  2. v4.1AWS Certified Cloud Practitioner

    Apr 2026

    Earned the AWS Certified Cloud Practitioner certification.

    • AWS
    Verify on Credly
  3. The RYZE customer portal home: a welcome header, links to orders, subscriptions and account details, a promo banner and product recommendations, December 2025.

    v4.0RYZE Superfoods: customer portal

    Nov 2025 – Jan 2026 · Contract

    Refactored a Recharge subscription portal built in Vue and embedded in a Shopify store, where customers manage subscriptions, delivery schedules and orders.

    • Vue 3
    • Vue 2
    • JavaScript
    • TypeScript
    • Recharge
    • Shopify
    Details
    Shipped
    • Moved code written in mixed Vue 2 and Vue 3 styles toward consistent Vue 3.
    • Removed duplicated logic and split large pieces into smaller, reusable ones.
    My role
    Joined an existing codebase. Changes went through peer review before going to production.
    Notes
    • Some exposure to Webflow: small edits to existing pages and experiments.
  4. Survival Game: a low-poly forest clearing with health, thirst, comfort and stamina bars.Sightbound: the light-mask material graph in the Unreal Engine editor.First Person Arena Shooter: a player running through the arena past blue and yellow walls.Energy Quest: the player character on a metal platform in a side-scrolling level.

    v3.0SNHU: B.S. Game Programming & Development

    Jul 2024 – Aug 2025

    A bachelor’s degree in game programming, with C++ and Blueprint projects in Unreal Engine. Shown here: four solo prototypes, from a light-based 2D platformer to a first-person arena shooter.

    • Unreal Engine
    • C++
    • Blueprints
    • Paper2D
    • Behavior Trees
    Details
    Shipped
    • Sightbound: a 2D platformer prototype built around a light mechanic that limits what the player can see, using a custom glowing light-mask material.
    • Survival Game: a 3D survival prototype with a cozy look, rebuilt in Blueprints from a C++ class project to see how far I could get without tutorials.
    • First Person Arena Shooter: AI enemies in an enclosed arena, with a scoreboard and item pickups. My first Unreal project.
    • Energy Quest: a 2.5D side-scrolling time challenge where the player collects energy to face a final boss.
    My role
    The four prototypes shown are solo projects, each built in a short sprint.
    Notes
    • Coursework across the program included C++ projects in Unreal Engine. The four prototypes shown are built mostly with Blueprints.
    • Some art comes from itch.io asset packs, credited on each project.
  5. The Original Premium Mattress product page on Shopify, with size and price options, September 2023.

    v2.4Lull: Shopify migration

    2023

    Recreated lull.com on Shopify, replacing a custom Node.js site, with sections the marketing team could edit without a developer.

    • Shopify
    • Liquid
    • Dawn
    • JSON section schema
    • GitHub
    Details
    Shipped
    • Recreated lull.com on Shopify, replacing a custom Node.js (Koa) site.
    • Section and block settings so non-developers could edit content.
    My role
    Main developer on the theme files. Teammates helped build some sections, and a few complex sections were outsourced near the end.
    Notes
    • Extended from the Dawn theme, not from scratch.
  6. A Lull landing page from the Nuxt project: “Life-Changing Sleep Starts Here” over a photo of the mattress, April 2021.

    v2.3Lull: Nuxt landing pages

    2020–2023

    Rebuilt landing pages in a Vue/Nuxt static-site project so we could run experiments against the mirror landing pages on the legacy site.

    • Vue
    • Nuxt
    • Sass
    • Static site generation
    Details
    Shipped
    • Rebuilt landing pages inside a Vue/Nuxt static-site project so they could be used in experiments.
    • Kept performance a priority, so the pages could be compared fairly against the same pages on the old site.
    My role
    A senior developer set up the project. I worked inside it, rebuilding landing pages.

  7. v2.2Lull: A/B experiments

    2018–2024

    Set up A/B experiments from specs and built the variant code: promo sections, landing pages and layout changes.

    • Google Optimize
    • Optimizely
    • JavaScript
    • CSS
    • Sass
    • Bootstrap
    My role
    I configured the experiments and built the variant code.
    Notes
    • The testing tools changed several times over the years.
  8. The Lull homepage: “Meet the Mattress of Your Dreams” above a stack of Lull mattresses, October 2023.

    v2.1Lull: day-to-day releases

    2018–2024

    Promotions, sale campaigns and product launches: most of my regular work, shipped through pull requests, preview environments and QA.

    • Bootstrap
    • Sass
    • Nunjucks
    • Node.js
    • Koa
    • Docker
    • Shopify
    • Liquid
    • Git
    • GitHub
    Details
    Shipped
    • New product sections and promotional sections.
    • Seasonal changes across the site.
    • Reusable components and processes where they paid off, such as a repeatable setup for rotating sales.
    • Page speed optimizations.
    • Code cleanup to make the structure easier to work in.
    My role
    Front-end developer on the WebOps/Engineering team, building and maintaining features and campaigns week to week.
    Notes
    • Each change went through a pull request, review in a preview environment, QA, deploy and a retest in production.

  9. v2.0Lull: joined as a Junior Front-End Developer

    Oct 2018

    Joined the front-end team at Lull, a direct-to-consumer mattress and bedding company. Promoted to Front-End Developer after about two years, and stayed through May 2024.

    • HTML
    • CSS
    • Sass
    • JavaScript
    • jQuery
    • Bootstrap
    • Nunjucks
    • Git

  10. v1.0Freelance

    2016–2018

    Built a few WordPress sites with a designer, turning their designs into working pages, plus small content and CSS edits on Shopify and Kentico sites.

    • WordPress
    • Shopify
    • Kentico
    • CSS
    • Bootstrap