Mark Eriksson_

{
  "role": "Lead developer",
  "year": 2019,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

The group’s flagship site, for a UK fuel and lubricants supplier trading since 1947. A custom WordPress theme with product pages for HVO, DERV, red diesel and lubricants, a tank size calculator, and quote forms that feed the company’s CRM.

{
  "role": "Lead developer",
  "year": 2021,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

A nationwide fuel delivery brand in the Crown Oil group. A custom WordPress theme built around its top products, with a quick quote form that goes straight into the group’s CRM.

{
  "role": "Lead developer",
  "year": 2023,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

A standalone site setting out Speedy Fuels’ carbon-neutral certification and its path to Net Zero, with a carbon calculator showing the carbon saved by switching from diesel to HVO.

{
  "role": "Lead developer",
  "year": 2022,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

The sustainability hub for the UK’s first carbon-neutral fuel supplier, covering its Net Zero pledge and ESG framework, with a carbon calculator showing the carbon saved by switching from diesel to HVO.

{
  "role": "Lead developer",
  "year": 2022,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

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": 2020,
  "stack": ["WordPress", "PHP", "TypeScript", "Web Components", "Vite", "AWS", "Cloudflare"]
}

what I built

A fuel and lubricants brand serving the construction, agricultural and industrial sectors. A custom WordPress theme with a page for each fuel type, including heating oil, and quote forms that feed the group’s CRM.

{
  "role": "Lead developer",
  "year": 2026,
  "stack": ["WordPress", "PHP", "TypeScript", "Vite", "AWS", "Cloudflare"]
}

what I built

A gas, electricity and water connections business for homeowners and businesses, including options to spread the cost of domestic projects. The group’s newest custom WordPress theme.

{
  "role": "Lead developer",
  "year": 2018,
  "stack": ["WordPress", "PHP", "TypeScript", "Vite", "AWS", "Cloudflare"]
}

what I built

A nationwide fuel and lubricants brand in the group. A custom WordPress theme focused on its most popular products and delivery coverage, with quote forms that feed the group’s CRM.

{
  "role": "Project creator & developer",
  "year": 2015,
  "stack": ["Laravel / PHP", "Vite"]
}

what I built

A free web app for UK shift workers: enter the shifts on your rota and it adds up hours, overtime and holiday, then estimates take-home pay so you can check it against your payslip. Works offline.

{
  "role": "Creator",
  "year": 2015,
  "stack": ["Vanilla JS"]
}

what I built

A small tool that finds the check character for a warehouse shelf location, or reverse-looks-up every location sharing a given check character.

{
  "role": "Lead developer",
  "year": 2020,
  "retired": 2026,
  "stack": ["WordPress", "PHP", "TypeScript", "Vite", "AWS", "Cloudflare"]
}

what I built

The previous Crown Energy site, for its gas, electricity and water connections business serving homes, businesses, the public sector and construction. A custom WordPress theme, live until the 2026 rebuild replaced it.

{
  "role": "Lead developer",
  "year": 2024,
  "retired": 2026,
  "stack": ["WordPress", "PHP", "TypeScript", "Vite", "AWS", "Cloudflare"]
}

what I built

The recruitment site for the Crown Oil group, with current vacancies, pages for each location, benefits and culture, and a register-your-interest form that takes CV uploads. A custom WordPress theme, live until the group moved its recruitment to a hosted jobs platform.

{
  "role": "Lead developer",
  "year": 2022,
  "retired": 2026,
  "stack": ["WordPress", "PHP", "TypeScript", "Vite", "AWS", "Cloudflare"]
}

what I built

The site for a UK manufacturer of high-security composite doors, with a gallery of door styles, colours and glass designs, product and security guides, and a postcode search for finding a trusted installer. A custom WordPress theme with its own blocks, live until the 2026 rebuild replaced it.