// 05 · work
Crown Oil Environmental_
The site for Crown Oil’s industrial services arm: tank cleaning and lining, integrity testing and fuel buyback for commercial customers. A custom WordPress theme with service, sector and case study pages.
- role
- Lead developer
- year
- 2022
- stack
- WordPress · PHP · TypeScript · Web Components · Vite · AWS · Cloudflare
- category
- Work
// GTmetrix, Nov 2026
100%
performance
99%
structure
398 ms
LCP
72 ms
TBT
0
CLS
Quote requests are verified, then saved to a database that the company’s internal CRM picks up, so they reach the sales team without anyone re-keying them.
Its calculators come from a set I built for the group, including a carbon calculator, a tank size calculator and volume converters. Each one is an HTML custom element, built once and embedded on whichever sites need it, and takes its colours from the theme of the site it’s on.
Like every site in the group, it’s a custom WordPress theme, front end and back end, built from scratch. It runs on a back-end library I wrote and share across all of the sites, which handles form submissions, phone and email verification and common utilities. Front-end assets are bundled with Vite, and the sites are hosted on AWS behind Cloudflare: I moved the whole group onto Cloudflare and tuned its caching, which made the sites far more reliable.