Shopify & E-commerce Engineer
Your Shopify store. Thought through to checkout.
I’m Illia. I turn ambitious brands into Shopify stores where every screen is thought through, everything works as it should, and buying is easy.
- 5 years in e-commerce
- 3 years on Shopify
- Clients in the US, Canada and Europe
Selected work
What that looks like in practice.
Wellness DTC
Engineering a conversion-focused Shopify storefront
A US wellness brand under NDA. I rebuilt the subscription offer and the path to it, instrumented the funnel through Shopify's closed checkout, and found a layout shift PageSpeed never reported.
- 6Deep dives
- 66 / 66Subscriptions migrated, no double charges
- 0.9CLS found on real users
- +45%Sales after release, period over period
Numbers from the case itself, not the size of the theme.
The brand is removed from every image under NDA. The page itself matches the live one exactly, and I can walk through the real version on a call.
Absolute Support
Extending Dawn for a Complex Compression Catalog
A custom product-selection and educational layer for a medically complex catalog, while Shopify's native variant, cart, search, and filtering systems remained the source of truth.
- Compression modeled separately from purchasable variants
- Custom presentation feeding Dawn's native state
- Merchant-editable OS 2.0 content layer
Boxwood Coffee
Knowing What Not to Rebuild
A disciplined Prestige adaptation for a specialty roaster spanning retail, subscriptions, two cafés, catering, and wholesale, with custom code reserved for coffee-specific data and navigation.
- Configure, extend, or build
- Coffee product data modeled with metafields
- Prestige commerce behavior preserved
Hi, I’m Illia.
More about meAn entrepreneur’s thinking. An engineer’s hands.
Five years in e-commerce taught me to see a store as more than a collection of pages. It’s an offer, a business and a thousand small decisions that make someone feel ready to buy.
You talk directly to the person doing the thinking and the building. I ask questions, explain the trade-offs and stay close to the details.
What I take on
From a new store to the part nobody wants to touch.
Stores and themes
From scratch, full redesigns, custom sections and templates on OS 2.0. Two of the stores here were built page for page from supplied Figma files.
Case: Boxwood CoffeeSubscriptions and the buy box
Plans, cadence per pack, bundles and a buy box on native Selling Plans without a vendor widget. 66 of 66 subscribers migrated with no double charges.
Case: subscription buy boxSpeed on real users
Measured in the field, not in PageSpeed. On one store this surfaced a CLS of 0.9 for a third of mobile sessions that lab tools never saw.
Case: performance and RUMAnalytics and integrations
Events from the first visit to the order, through Shopify's closed checkout with a custom Web Pixel. GA4, GTM, Meta, Klaviyo, Amplitude.
Case: analytics architectureSafe delivery to a live store
Git with no lost content and no downtime: a branch per theme, isolated revertable PRs, clear rules for shared files. Nobody overwrites anyone.
Case: production-safe deliveryPolicies and privacy
Privacy, Cookie and Terms built from an audit of what the store actually collects, with an opt-out that works and answers your lawyers can use.
Case: the privacy auditSomething else on your list? Tell me what it is.
How we work
A clear process. One person to talk to.
I start with an audit, not with a quote
First I find where the store loses sales, then I name a price. An existing store or an idea from scratch, a day of work or several months.
I build for years, not until the next update
I build on Shopify's own mechanisms rather than on top of them. The platform updates, the theme updates, an app updates, you add a product or a plan, and the store keeps working exactly as it did.
I check every screen, then ship
I walk the whole purchase and check every section on a phone and on a desktop. The store looks and works the same on any device, and the release never stops your team.
Figma MCP → Claude Code
Faster builds. More attention to quality.
An AI agent builds routine sections using a workflow I have refined across hundreds of stores. It incorporates proven Shopify practices and modern front-end techniques. I personally review every section.
Up to 5×faster assembly of routine sections, landing pages and collection pages
Time saved goes into the quality of your store.
QA and the purchase journey
I test the path from product selection to checkout: flows, error states and different screen sizes.
Speed and Core Web Vitals
I optimize loading, responsiveness and layout stability for a smoother shopping experience.
Conversion opportunities
I identify template issues and friction in the purchase journey, then suggest section improvements to help increase conversion.
Almost a year of refinement across hundreds of stores. I take responsibility for the code and release.
The AI agent reads the design through Figma MCP
Claude Code extracts the structure, block positions, spacing, fonts and images directly from Figma. That design data feeds into my agent development workflow.
- Claude Code + Figma MCP
- Exact design data for automated assembly
This site went through the same process: built in code by me, three languages, checked in the browser before every release. No template, no site builder.
Hand over the problem. Consider it handled.
Any Shopify task, from a broken cart to a store built from scratch. Send me your store link and tell me what's wrong. Almost anyone can get something done today. I take responsibility for something else: a result I care about both before and after launch.
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