Custom Shopify

Custom Shopify, hand-coded — no Dawn fork, no marketplace theme.

Bespoke Liquid themes for Shopify stores with strong opinions about brand and performance. Custom sections, metaobjects, schema settings designed around the merchant team, and a theme repo your in-house team or next agency can extend.

Theme

100% bespoke, no Dawn fork

Editor

Section-rich, merchant-friendly

Stack

Liquid + JSON + custom JS

Hand-off

GitHub flow, documented

What is custom Shopify development?

Custom Shopify development is the practice of building hand-coded Shopify themes, bespoke commerce flows, and B2B portals on top of Shopify — past the limits of what marketplace themes and apps can deliver. The work suits brands whose commerce experience needs to feel like the brand, not the platform.

Why custom

Marketplace themes are fast to launch and slow to live with.

Premium Shopify themes (Impulse, Empire, Prestige) ship a thousand options for sites they have never seen. The trade-off is bloated CSS bundles, generic interaction patterns, and editor controls that drift the design system. A custom theme ships only what your store actually uses, named the way your merchants think, and runs faster because it doesn't have to support every possible configuration.

What we hear most

Common reasons brands move to a custom Shopify theme.

01

Marketplace theme has plateaued

Started fast, hit a ceiling. Performance is suffering. Customization is fighting the theme architecture. Time for a build that fits the brand.

02

Brand fidelity is a compromise

Marketplace themes approximate your design system. They cannot quite hit spacing, type, or motion. Every page is a small concession.

03

Editor controls drift the design system

Too many surface settings. Type sizes, spacing, and colour wander as merchants tweak. Custom themes scope the editor surface deliberately.

04

Performance ceiling

Premium themes carry global CSS/JS bundles regardless of which sections render. Custom themes ship only what each template needs.

05

Custom functionality wedged in

Configurators, bundles, subscription gating bolted in via apps. A custom theme can fold the right ones into native sections and reduce app dependency.

What we deliver

What ships in a custom Shopify build.

A bespoke Liquid theme with a section architecture, custom JS, and the editor controls to keep the design system intact.

Theme

  • Custom Liquid theme — no parent, no Dawn fork
  • Section-based architecture with sections everywhere
  • Metaobjects and metafields for structured content
  • Custom JS bundle, idle-loaded and tree-shaken
  • Theme conventions documented in the repo

Editor experience

  • Schema settings scoped to what merchants should change
  • Section presets for the patterns you ship most
  • Editor styles that mirror front-end
  • Loom-led walkthroughs for the merchant team
  • Online Store 2.0 features used where they earn their keep

Performance

  • LCP < 2.0s, CLS < 0.05, INP < 150ms targets
  • Critical CSS, font subsetting, fetchpriority on LCP
  • Image policy: AVIF/WebP via Shopify CDN with srcset
  • JS bundle hygiene — only what each template needs
  • Real-user CWV monitoring for 30 days post-launch

Hand-off

  • GitHub flow with theme deployment via Shopify CLI
  • Theme conventions documented
  • 30 days of post-launch support included
  • Optional retainer for new sections and templates
  • Quarterly theme health review

Process

How this service runs end to end

The same six-step shape we use across every Haxtiv project — adapted to the specifics of this scope.

  1. 01

    Discover

    Audit, intent, and the part nobody is saying out loud

    We open with a working session — not a deck. We pull analytics, crawl the existing site, audit the brand, and interview the people closest to revenue. We surface the friction inside the team, not just the friction on the screen.

  2. 02

    Define

    Sitemap, story, and the metrics that actually matter

    We define the audience journeys, the commercial pages we are willing to defend, the SEO architecture, and the measurable outcomes. You get a shape of the project that survives feedback because it was built on evidence.

  3. 03

    Design

    Editorial system, art-directed, never templated

    Type, grid, motion, and tone built as a system. We design the hero, the long pages, the unloved corners, and the empty states. Every screen looks like it belongs to the same studio. Nothing is parked for later.

  4. 04

    Build

    Production code your team can keep

    WordPress, Shopify, or page builder — we build clean, accessible, performant, and documented. Component-led, naming you'll recognize next year, and a changelog your in-house team can read.

  5. 05

    Launch

    Migration without losing rankings or sleep

    Pre-launch crawl, redirect map, schema and metadata cutover, performance baseline, and a launch playbook. We run the deploy with you, not at you.

  6. 06

    Grow

    Care plan, CRO sprints, and quiet improvements

    We stay involved. Monthly performance reports, security and core updates, and CRO sprints that compound. The site gets better the longer you keep us.

What this looks like in production

Numbers we earn, not numbers we round up.

0+

Sites shipped

across 27 countries

0k

Studio hours

delivered since 2019

0.0x

Avg conversion lift

post-redesign clients

0%

Client retention

into year two

In their words

Senior teams who chose us.

Haxtiv replatformed our marketing site without losing a single ranking. We saw organic leads up 38% inside the first quarter and the editorial team finally has a layout system they don't fight.

Mara Iglesias

VP Marketing · Lumenwave Health

Headless WordPress redesign

Our previous Shopify build was a Frankenstein of apps. The Haxtiv team simplified the stack, rebuilt the PDP and CRO patterns, and our store is faster and more profitable than it has ever been.

Daniel Korver

Founder · Northbound Goods

Shopify Plus rebuild

Frequently asked

Answers worth asking for.

Don't see the question you're holding? Send it to [email protected] and we'll answer the same day.

Marketplace themes ship thousands of options for sites they have never seen. Custom ships only what your store needs, named the way your team thinks, with editor controls scoped tighter and performance better because there's no compatibility scaffold.

Continue reading

Where to go next

Start here

Brief us on a Shopify theme that has to fit the brand.

30-minute call. We'll review the brief and share a fixed quote.

Book a 30-min call
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