Callum Hayes

Shopify Developer, Northern Commerce Studio, Manchester

Commerce Pundit • Freelance

Jun 2021 - Present • 5 yrs 4 mos

I worked on a small team that built and maintained Shopify and Shopify Plus stores for retail brands across the UK. Most of my days were spent customizing themes with Liquid, JavaScript and CSS, and turning design files into working pages that matched the client's brand. I built custom sections for product pages, bundle builders, size guides and collection filters, and I connected stores to tools like Klaviyo, Stripe, Royal Mail shipping apps and Google Analytics. I also handled migrations from WooCommerce and Magento, which meant moving products, customers, redirects and order history without losing search rankings. When a store was slow, I audited it, removed apps that were not earning their place, compressed images and cleaned up theme code. Over three years I delivered more than 60 stores and redesigns, and I trained client staff to manage their own products and orders after launch. I wrote simple handover notes for every project so clients never felt stuck once I was done.

Ecommerce Developer, Pennine Home and Living, Leeds

HOME • Freelance

Jul 2019 - May 2021 • 1 yr 10 mos

I was the in house Shopify developer for a home goods brand that sold both to the public and to trade customers. I looked after the live store every day, fixing bugs, updating the theme before sales and adding features the marketing team asked for. I set up the wholesale side of the business, including customer groups, trade pricing, minimum orders and a separate login so shops could reorder easily. I also connected the store to the company's stock system so inventory counts stayed correct across channels, which cut overselling problems and cut manual stock updates by about eight hours a week. During Black Friday and Christmas I prepared the store for heavy traffic by testing the checkout, checking discount rules and watching site speed. I worked closely with the customer service and warehouse teams, so I learned what actually causes refund requests and late orders, and I built small fixes into the store to prevent them.