Independent Shopify engineering

Storefronts and integrations you can inspect.

Real development-store behavior, direct source links, and test evidence for scoped Shopify work. No commissioned client results or conversion claims.

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Seven focused proofs

The problem, the implementation, the verification.

Each example links to a concise case study and the code behind it. Store previews require development-store access; screenshots and source remain public.

Atlas bottle product page showing the selected Navy and 32 oz variant

Advanced product page

Problem

Variant changes can leave price, imagery, availability, and cart state out of sync.

Verified behavior

A real six-variant Shopify product keeps those states aligned and renders metafield and metaobject content.

Liquid · JavaScript · variants · metafields

Case study Source Store preview · access required

Three-card Shopify product comparison section

Custom Shopify section

Problem

Merchants need to update comparison content without developer edits.

Verified behavior

A reusable product-comparison section exposes its content, blocks, and layout in the Theme Editor.

Liquid · Online Store 2.0 · section schema

Case study Source Store preview · access required

Personalized bottle configurator showing engraving and gift options

Product configurator

Problem

Personalized choices need validation and must survive the Shopify cart.

Verified behavior

Engraving, style, gift note, and gift wrap follow a real variant into visible line-item properties.

Liquid · variants · line-item properties

Case study Source Store preview · access required

Shopify case calculator displaying whole-case purchase math

Cart and purchase logic

Problem

Case-based purchasing needs predictable rounding and an accurate cart quantity.

Verified behavior

A quantity calculator converts demand into whole cases; the AJAX drawer refreshes from Shopify cart data.

Liquid · JavaScript · Ajax Cart API

Case study Source Store preview · access required

Repaired Shopify cart showing variant details and personalization properties

Theme debugging

Problem

Inherited theme bugs can make cart state misleading or unusable.

Verified behavior

Three source-backed repairs cover stale cart count, missing variant identity, and an invalid empty-cart state.

Liquid · JavaScript · cart sections

Case study Source

Shopify storefront collection used in the quality verification

Performance and QA

Problem

A working theme still needs repeatable quality checks and documented limits.

Verified behavior

Theme Check, nine Lighthouse runs, keyboard and responsive checks, and push/PR quality gates are recorded.

Theme Check · Lighthouse · accessibility · CI

Case study Source

Inventory Sync Monitor dashboard inside Shopify admin

Inventory sync integration

Problem

Inventory mismatches and failed syncs need visible, recoverable handling.

Verified behavior

An embedded app uses real Admin GraphQL and webhooks with PostgreSQL-backed retries, idempotency, and a merchant dashboard.

React Router · Admin GraphQL · webhooks · Prisma

Case study Source

Backend proof

Inventory synchronization with visible failure handling.

The embedded app reads Shopify inventory through Admin GraphQL, receives inventory and product webhooks, consults an authenticated mock warehouse, and persists claims, retries, and outcomes in PostgreSQL. The current app uses a local development tunnel; it is not presented as a production-hosted service.

Shopify GraphQL + webhooksEmbedded appPostgreSQL · mock warehouse · dashboard

Scoped Shopify work

Have a specific theme or integration problem?

Send the store context, current behavior, and desired result. I can scope one safe change and show how it will be verified.

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