shopify development services

    Shopify Development Services for Serious E-commerce

    Custom Shopify themes built mobile-first. Migrations from WooCommerce, Magento, OpenCart, and custom platforms. Shopify apps for ERP, CRM, and marketplace integrations. Supplier-feed automation for catalogues in the tens of thousands of SKUs. Real stores in production today.

    Shopify development services for custom themes, migration, and apps

    ■ Who this is for

    Who Our Shopify Development Service Is For

    • DTC and e-commerce brands building or rebuilding a custom Shopify storefront
    • Stores migrating from WooCommerce, Magento, OpenCart, or a custom platform to Shopify
    • Catalogue-heavy stores (10K to 100K+ SKUs) that need supplier-feed automation
    • Brands on Shopify Advanced or Shopify Plus needing carrier-calculated shipping rates
    • Merchants that need a custom Shopify app for ERP, CRM, or marketplace integrations
    • Existing Shopify stores that need ongoing engineering, performance, and feature work

    ■ Probably not a fit

    We'll be honest if Shopify is the wrong call

    • Pure marketing sites with no checkout — Shopify is the wrong tool
    • Single-product, no-customisation stores that fit a pre-built theme out of the box
    • Projects where a freelancer's $500 theme tweak is genuinely all you need
    • Teams looking purely for the cheapest Shopify Partner bid

    ■ Plan selection

    Choosing the right Shopify plan for your store

    Every Shopify engagement starts with the same question: which plan does the store actually need? The answer is not always Plus, and it's rarely Basic past a certain GMV. Here's the framework we use to recommend a tier on the first call — before anyone gets anchored on a price.

    PlanRecommended GMV
    Basic ShopifyUp to ~$150k / year
    Shopify$150k–$1M / year
    Advanced Shopify$1M–$5M / year
    Shopify Plus$5M+ / year

    Two patterns we see most often when stores are on the wrong plan: a $3M / year brand stuck on Shopify (paying transaction fees that already exceed the Advanced upgrade), and a $400k brand on Plus because someone sold them the upgrade two years early. We model the math before recommending a move.

    Featured client
    The OEM Parts Store logo

    Case Study · US Trade & Consumer · Outdoor Power Equipment

    70K+

    In-stock SKUs

    1M+

    Parts catalogue access

    Stack

    Shopify Plus · Liquid · Custom Apps · Carrier-Calculated Shipping

    Visit store

    ■ Real work · Featured engagement

    Shopify Development for Large-Catalogue Stores

    The OEM Parts Store is a US distributor of outdoor power-equipment and trailer parts — Briggs & Stratton, Kohler, Tecumseh, MTD, Stens, Rotary, Dexter, and many other brands — selling to landscapers, small-engine repair shops, trailer repair centres, and prosumer DIY buyers. The merchant carries 70,000+ SKUs in active stock and offers customers access to more than a million OEM and replacement parts through their distributor network. The legacy storefront was on a custom platform; we replatformed the catalogue onto Shopify on the store. subdomain.

    Tierfutter Pro logo

    Case Study · Germany · Pet Food & Animal Feed

    3,500+

    Active SKUs

    DE / EN

    Multilingual storefront

    Stack

    Shopify · Liquid · Custom App · Marketplace Sync

    Visit store

    ■ Real work

    Multilingual Shopify Development for International Brands

    Tierfutter Pro (operated by JJ's Food & Feed Trade GmbH out of Herzlake, Germany) is a specialist online retailer of premium pet food and animal feed for dogs, small animals, and poultry. The catalogue runs to over 3,500 active SKUs spanning dry and wet feed, supplements, training food, and accessories — a deep enough taxonomy that faceted filtering by species, food type, and dietary attribute is the difference between a customer finding the right product and bouncing.

    ■ How we approach Shopify

    How We Build High-Performance Shopify Stores

    We have strong opinions about how Shopify should be built when the store is doing serious revenue. Here's what we reach for by default, and the reasoning behind each choice. We deviate when there's a real reason — not because something is trending in the Shopify Partner ecosystem.

    Online Store 2.0 themes — sections and blocks

    We build new themes on Online Store 2.0 with reusable sections and JSON templates so the marketing team can compose any page from the theme editor without a developer in the loop. We avoid heavy page-builder apps that re-render half the storefront in JavaScript — they're slow, expensive, and a nightmare to maintain three years in.

    Mobile-first Liquid, real Core Web Vitals

    60–80% of Shopify traffic is mobile. We design every PDP and collection page for 360px before we look at the desktop layout. Lazy-loaded images using Shopify's responsive image pipeline, font subsetting, deferred third-party scripts, and a hard cap on app-injected JS. LCP, CLS, and INP are budgeted, not hoped for.

    Migration to Shopify — done with the APIs

    WooCommerce, Magento, OpenCart, BigCommerce, and custom platforms — we've migrated all of them. The work is more than a CSV. We map customers (with password-reset flows because hashes don't carry across), historic orders, product variants, metafields, redirects from old URLs to preserve SEO, tax zones, payment provider switching, and a rehearsed cut-over plan. We use Shopify APIs, Matrixify, and custom scripts depending on what the source platform actually exposes.

    Custom Shopify apps — when an app is the right answer

    When the storefront needs logic that doesn't belong in Liquid — ERP sync, CRM data exchange, billing software integration, custom merchant dashboards, marketplace exports — we build a private or public Shopify app on App Bridge and Polaris. OAuth, GraphQL Admin API, webhooks, queue-backed background jobs, and rate-limit-aware retries. Apps that survive your first Black Friday.

    Supplier-feed automation for big catalogues

    For stores in the tens of thousands of SKUs, the killer feature is not the theme — it's the catalogue automation. We write scheduled ingestion services that pull supplier price and stock files (CSV, FTP, API), normalise them, and push deltas into Shopify with proper rate-limit and bulk-mutation handling. We've done this for catalogues up to 70,000+ active SKUs.

    Custom shipping — calculated rates on Plus / Advanced

    Built-in Shopify shipping is fine for most DTC. When the store has freight, oversize items, multi-warehouse split shipments, or trade-customer pricing, we integrate third-party shipping APIs as a Shopify Custom Carrier Service so checkout returns real-time rates. This requires Shopify Advanced or Shopify Plus — we'll tell you up front whether the upgrade is worth it.

    Storefront features — filters, quizzes, configurators

    Custom collection filters via Shopify Search & Discovery and metafields. Branching product-finder quizzes. Photo-upload configurators on personalised products. Bundle / build-your-own kit builders. Complex pricing tools — quantity breaks, trade tiers, surcharges. We write these as Liquid sections and JS modules, not as bolt-on apps that bloat the page.

    Headless when it earns it — Hydrogen / Next.js

    Headless Shopify with Hydrogen (Remix) or Next.js shines when the brand needs a faster front-end, a non-Shopify CMS in front of products, or a unified app/web experience. It costs you the live theme editor, native checkout customisations, and the ecosystem of standard apps. We go headless when the product genuinely benefits — not because it's the fashionable answer.

    ■ Real work

    Shopify Development for Luxury and Resale Brands

    Shush London is one of the UK's longest-running preloved designer fashion retailers — almost four decades of authenticated luxury resale out of St John's Wood. The catalogue spans Chanel, Hermès, Louis Vuitton, Gucci, Prada, Dior, Burberry, Cartier, Rolex, Jimmy Choo, Christian Louboutin, Stella McCartney, Alexander McQueen and many more, across womenswear, accessories, fine jewellery, and watches. The hard part of selling preloved luxury on Shopify is that every item is a one-of-one — a single quantity, photographed individually, with its own condition and provenance notes.

    Shush London logo

    Case Study · UK · Luxury Resale Fashion

    38+ yrs

    Brand heritage

    1-of-1

    Unique-SKU catalogue

    Stack

    Shopify · Custom Liquid Theme · Tag-Driven Filtering

    Visit store
    Woomflo logo

    Case Study · India D2C · Sustainable Period Wear

    OEKO-TEX

    Standard 100 certified

    Bundles

    Curated kit-builder

    Stack

    Shopify · Custom Theme · Bundle Builder · Social Commerce

    Visit store

    ■ Real work

    Shopify Development for D2C and Sustainability Brands

    Woomflo is a Bangalore-based D2C menstrual underwear brand built around reusable, leak-proof, OEKO-TEX Standard 100 certified period wear. Designs and 100% of materials are sourced locally in India, and the brand is positioned for both the Indian market and international export to the sustainable-living audience. Selling a category that's both intimate and educational means the storefront has to do real work — not just display products, but explain silhouette differences (Bikini, Hipster, Shorty) and absorbency levels in pad and tampon equivalents.

    ■ Real work

    Custom Shopify Product Configurator Development

    Puzzle This is a personalised-puzzle e-commerce brand — customers upload their own image and the store turns it into a printed jigsaw puzzle shipped to their door. The interesting engineering on a store like this isn't the catalogue. It's the configurator on the product page, which has to take an arbitrary user photo, validate resolution against piece-count thresholds, render a live preview, and carry the asset all the way through checkout into fulfilment without losing the original file.

    Puzzle This logo

    Case Study · Personalised Photo Puzzles

    Custom

    PDP configurator

    Live

    Preview rendering

    Stack

    Shopify · Liquid · Photo Upload Module · Print Fulfilment

    Visit store

    ■ How we work

    Our Shopify Development Process

    01

    Discovery and audit

    One week. We map the catalogue, the merchandising model, the integrations the store actually has to support (ERP, marketplaces, shipping carriers, marketing tools), and the business goals behind the build. For migrations, we audit the source platform's data model. Output: a written architecture and a 90-day plan.

    02

    Stack lock and infrastructure

    We choose the Shopify plan (Standard / Advanced / Plus), the theme strategy (custom Online Store 2.0 vs headless Hydrogen / Next.js), the app footprint, and the hosting story for any companion services. CI, version control, and a development store get set up before any production code lands.

    03

    Sprint zero

    Theme scaffolding, base sections, metafield model, navigation, and the Shopify admin set up the way the merchandising team will actually use it. Custom apps and supplier-feed services scaffolded with auth, queues, and logging. By the end of sprint zero, the merchant can log into a working development store.

    04

    Feature sprints

    Two-week sprints. Theme work, app work, and integrations shipped through CI. Every change reviewed. Scope changes get re-baselined at sprint boundaries, not mid-sprint. You see progress every Friday — and a working preview store you can poke at any time.

    05

    Migration cut-over and pre-launch hardening

    For migrations: a rehearsed dry-run on the development store, then the live cut-over with redirects, customer password-reset flows, payment provider switch, and a checklist that's been run through twice. Performance pass on Core Web Vitals, app audit, security headers, and a Black-Friday-grade load expectation.

    06

    Launch and 30-day stability watch

    We stay on full availability for the first month after launch. Real customers find real bugs. Then we move into the standard maintenance and feature retainer — supplier-feed scripts that need to absorb a new vendor format, theme changes around a campaign, and the occasional emergency that comes with running a real store.

    ■ Honest comparison

    Why Choose Appycodes for Shopify Development

    Custom Liquid theme development

    • Theme-only PartnerYes
    • Shopify freelancerMixed
    • In-house Shopify devYes
    • AppycodesYes

    Migration to Shopify (Woo / Magento / Open / custom)

    • Theme-only PartnerRare
    • Shopify freelancerSometimes
    • In-house Shopify devIf they prioritise it
    • AppycodesYes

    Shopify app development (private / public)

    • Theme-only PartnerNo
    • Shopify freelancerRare
    • In-house Shopify devSometimes
    • AppycodesYes

    Catalogues 50K+ SKU with feed automation

    • Theme-only PartnerNo
    • Shopify freelancerNo
    • In-house Shopify devMaybe
    • AppycodesYes

    Carrier-calculated shipping on Plus / Advanced

    • Theme-only PartnerRare
    • Shopify freelancerRare
    • In-house Shopify devYes
    • AppycodesYes

    Time to start

    • Theme-only Partner1-3 weeks
    • Shopify freelancer1-2 weeks
    • In-house Shopify dev8-16 weeks
    • Appycodes1-2 weeks

    Continuity if someone leaves

    • Theme-only PartnerMixed
    • Shopify freelancerHigh risk
    • In-house Shopify devYes
    • AppycodesBuilt in

    None of these is universally right. A theme-only Partner is fine for standard DTC. A Shopify freelancer is fine for narrow theme tweaks. We tend to be the right call when the build is genuinely engineering work — migration, custom apps, complex catalogues, calculated shipping, or integrations Shopify alone doesn't cover.

    ■ Questions we get

    Real questions from real merchants

    If yours is not here, ask us directly.

    Ritesh — Founding Partner, Appycodes

    About the author

    RiteshFounding Partner, Appycodes

    LinkedIn

    Ritesh leads engineering at Appycodes and has spent the last decade shipping Shopify storefronts and apps for serious merchants across the UK, US, Germany, India and Australia — including The OEM Parts Store's 70,000-SKU catalogue, Tierfutter Pro's multilingual German storefront, Shush London's luxury resale catalogue, Woomflo's D2C launch, and Puzzle This's photo configurator. His focus is on production e-commerce engineering: the unglamorous decisions that keep a Shopify store fast, reliable, and easy to change years after launch.

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