Shopify development agency · Shopify, WooCommerce, headless
Shopify developmentthat sells
Online stores that load fast and turn browsers into buyers.
A Shopify development agency that builds, migrates and grows DTC stores on Shopify and WooCommerce. The same in-house team runs your ads, SEO and email, so the store is built to sell from day one.
30+ in-house specialists design, development, QA and growth
$New order$30 via Apple Pay
⚡Product pageLoads in 1.6s on mobile
↗Cart recovery18% won back by email and SMS
50+stores launched
4.44×best ROAS (PetBuds UK)
3–8 wkstypical Shopify build
Trusted by founders, growing businesses and enterprise brands
In short
What does a Shopify development company do?
A Shopify development company designs, builds and sets up online stores on Shopify: the theme, product catalog, payments, shipping, sales tax and the apps that run the store.
✓Shopify suits most DTC brands
✓Checkout speed and returns decide margins
✓Speed and SEO are set at the build stage
Brands use one when they need a store that looks distinct, loads fast and handles real orders from day one.
At Seoily, we plan the catalog and checkout first, design mobile-first, then build on Shopify or WooCommerce with Stripe or Shopify Payments, shipping rates and sales tax set up. After launch, the same team runs ads, SEO and Klaviyo flows, reported against orders and revenue.
Home textiles · ClientA Shopify store for handcrafted home textilesBrand identity, product photography and a Shopify store with filters, reviews and local payment gateways, with SEO from the first day.
Pet products · ClientA faster store for a UK pet bed brandA rebuilt petbuds.co.uk with clearer product pages, a shorter checkout and server-side tracking that ties every sale to its ad.
Healthy snacks · ClientA DTC snack store that grows on searchCollection pages, recipe content and product schema for a makhana brand, built to win organic traffic without ad spend.
Skincare and wellness · ClientA skincare store that grew without adsA store for a D2C skin and hair care brand, with shop-by-category pages, best sellers and online consultations, grown on SEO and content alone.
Stores we’ve built, migrated and grown on Shopify, WooCommerce and custom checkouts.
Online store
Deszine TalksCushions and covers for designer chairs
Online store
Car MitraCar service booking and accessories
Proof, not promises
We grew a UK pet store from zero sales to £44,442.
PetBuds UK launched on Shopify with no sales, no search visibility and about 200 followers. We built SEO first, added organic social, then ran Google Ads that held a 4.44× return for 14 months.
01Fix the store before buying trafficTechnical fixes and deeper category and product pages took the average search position from 25.7 to 10.1 before ads went live.
02Social proof doesn’t have to be paidReels and posts with no paid promotion grew followers 14.4×, and one reel reached 1M views.
03Scale ads only while they pay back£10,000 of Google Ads spend returned £44,442, at about £5.18 per order.
92% of our projects ship on or before the agreed date. Final plan and price come after a short call.Get my store quote →
Pricing
How much does a Shopify store cost?
An ecommerce website from Seoily costs from $2,100 for a theme-based Shopify store to $6,400 and up for a custom-designed store. The number of products, custom features, integrations and whether you’re migrating change the price most.
Shopify launchNew brands that need to start selling fastFrom $2,100per store
✓Premium theme set up for your brand✓Up to 100 products loaded✓Cards, Apple Pay, PayPal and shipping✓GA4 and Meta pixel tracking
Numbers we report onFast stores, more orders, fewer returnsAverages from Shopify Analytics, GA4 and PageSpeed Insights across stores on our growth plan · updated quarterly
1.6savg product page load, mobile
2.4%avg conversion rate across stores
-38%best checkout drop-off cut
18%carts recovered by email and SMS
-27%return rate after fit guides
0rankings lost in migrations
Why Seoily
Why DTC brands pick Seoily for their store
One team that builds, launches, grows and supports, so nothing gets lost between agencies.
01Shopify and WooCommerce specialistsDevelopers who build and fix stores every month.
02Checkout built for your buyersShop Pay, Apple Pay, PayPal, sales tax and UPS or FedEx rates.
03Build and grow in one placeStore, ads, SEO and email from one team.
BUILDCONVERTRETAINGROW
SEOILYYour store
04Speed budgets on every themeLean themes and fewer apps, tested on mid-range phones.
05Fixed price, dated launchYou know the cost and launch date before we start.
06Your store, your dataStore, domain, theme code and customer data are yours. Payments stay PCI-safe.
shopify: new order $30stripe: payment capturedshipstation: 46 orders shipped via UPSklaviyo: cart recoveredmeta capi: purchase matchedpagespeed: 92 on mobilejudge.me: new 5★ reviewga4: conversion rate 2.4%
shopify: new order $30stripe: payment capturedshipstation: 46 orders shipped via UPSklaviyo: cart recoveredmeta capi: purchase matchedpagespeed: 92 on mobilejudge.me: new 5★ reviewga4: conversion rate 2.4%
Can’t find yours? Ask in the chat below and a real person replies.
A theme-based Shopify store starts from $2,100 a custom-designed Shopify or WooCommerce store from $6,400 and Shopify Plus or headless builds are quoted after discovery. Monthly Shopify fees, apps and payment processing are extra.
Shopify suits most DTC brands: it’s fast to launch, secure and easy for your team to run. WooCommerce suits brands that want full control of hosting and content, or already run a large WordPress site.
A theme-based store takes 3–5 weeks, a custom-designed store 6–10 weeks, a migration 4–8 weeks and a headless or marketplace build 3–5 months. Migrations keep your rankings: every old URL is redirected to its new one.
Yes. We set up Shopify Payments, Stripe, PayPal, Apple Pay and Shop Pay, shipping rates through ShipStation, UPS, FedEx or USPS, and sales tax with Shopify Tax or Avalara. Payments stay PCI-safe because card data never touches your store.
Yes. We work with clients worldwide, schedule calls in your time zone, and keep hours that overlap your workday. Your weekly call is booked at a time that suits you.
One account lead is your main contact, with a weekly video call, a shared Slack channel and a staging store you can click through at any time. You review designs and test orders before anything goes live.
You do. The Shopify account, domain, theme code, products and customer data are in your name from day one, and we sign an NDA if you need one.
Your product list with photos and prices, brand assets, shipping and return policies, and access to your current store if you have one.
No honest agency can guarantee sales. We commit to speed and process instead: a page-load target, every checkout path tested, and tracking that ties each order to its source. Stores on our growth plan average a 2.4% conversion rate.
A freelancer suits small theme tweaks. A large or local agency suits brands that want in-person meetings and have the budget. A senior offshore team like ours builds the store and runs ads, SEO and email for roughly a third to half of typical agency rates, with calls in your hours.
Talk to the team
Ready to sell online? Talk to the team that builds stores and fills them.
Chat with our assistant, message the team on WhatsApp, or book a call. Whichever you pick, a real strategist follows up within one working day.
Online stores that load fast and turn browsers into buyers.
$New order$30 via Apple Pay
⚡Product pageLoads in 1.6s on mobile
A Shopify development agency that builds, migrates and grows DTC stores on Shopify and WooCommerce. The same in-house team runs your ads, SEO and email, so the store is built to sell from day one.
30+ in-house specialists design, dev, QA and growth
50+stores launched
4.44×best ROAS (PetBuds UK)
3–8 wkstypical Shopify build
In short
What does a Shopify development company do?
A Shopify development company designs, builds and sets up online stores on Shopify: the theme, product catalog, payments, shipping, sales tax and the apps that run the store.
Brands use one when they need a store that looks distinct, loads fast and handles real orders from day one.
At Seoily, we plan the catalog and checkout first, design mobile-first, then build on Shopify or WooCommerce with Stripe or Shopify Payments, shipping rates and sales tax set up. After launch, the same team runs ads, SEO and Klaviyo flows, reported against orders and revenue.
We audit dozens of Shopify and WooCommerce stores every year. The same four problems cost them sales, and most are fixable in weeks.
Twenty apps loading scripts on every page push product pages past five seconds on mobile.
seoily / ecommerce / issue-01.logLIVE
✕23 apps installed on the storeApp audit
✕Product pages load in 5.2s on mobilePageSpeed 28
⚙Seoily: lean theme, 9 apps, image pipelineFix
✓Product pages load in 1.6sResult
BEFORE5.2s→WITH SEOILY1.6sProduct page load
Services
What we build
Everything a DTC brand needs to sell online, from the theme to the checkout to the email that recovers the cart.
New order $30PageSpeed 92
Shopify store developmentStores on Shopify 2.0 themes or fully custom, built to WCAG for ADA accessibility, with payments, shipping and sales tax set up.
Cart recoveredPaid via Apple Pay
Retention & automationKlaviyo email and SMS flows, reviews and loyalty that bring buyers back.
Custom Shopify themes & appsLiquid themes with sections your team can edit, and private apps when a plugin won’t do.
Stripe & Apple PayShop Pay checkoutSales tax (Avalara)Product filtersReviewsMulti-currencySubscriptionsKlaviyo email & SMSSales reportsProduct SEO
Stripe & Apple PayShop Pay checkoutSales tax (Avalara)Product filtersReviewsMulti-currencySubscriptionsKlaviyo email & SMSSales reportsProduct SEO
Our work
Stores we’ve built and grown
Home textiles · ClientA Shopify store for handcrafted home textilesBrand identity, product photography and a Shopify store with filters, reviews and local payment gateways, with SEO from the first day.
Pet products · ClientA faster store for a UK pet bed brandA rebuilt petbuds.co.uk with clearer product pages, a shorter checkout and server-side tracking that ties every sale to its ad.
Healthy snacks · ClientA DTC snack store that grows on searchCollection pages, recipe content and product schema for a makhana brand, built to win organic traffic without ad spend.
Skincare and wellness · ClientA skincare store that grew without adsA store for a D2C skin and hair care brand, with shop-by-category pages, best sellers and online consultations, grown on SEO and content alone.
Stores we’ve built, migrated and grown on Shopify, WooCommerce and custom checkouts.
Online store
Deszine TalksCushions and covers for designer chairs
Online store
Car MitraCar service booking and accessories
Proof, not promises
We grew a UK pet store from zero sales to £44,442.
PetBuds UK launched on Shopify with no sales, no search visibility and about 200 followers. We built SEO first, added organic social, then ran Google Ads that held a 4.44× return for 14 months.
£44,442revenue from £0
4.44×ROAS for 14 months
~1,930orders
01Fix the store before buying trafficTechnical fixes and deeper category and product pages took the average search position from 25.7 to 10.1 before ads went live.
02Social proof doesn’t have to be paidReels and posts with no paid promotion grew followers 14.4×, and one reel reached 1M views.
03Scale ads only while they pay back£10,000 of Google Ads spend returned £44,442, at about £5.18 per order.
An ecommerce website from Seoily costs from $2,100 for a theme-based Shopify store to $6,400 and up for a custom-designed store. The number of products, custom features, integrations and whether you’re migrating change the price most.
Shopify launchNew brands that need to start selling fastFrom $2,100per store✓Premium theme set up for your brand✓Up to 100 products loaded✓Cards, Apple Pay, PayPal and shipping✓GA4 and Meta pixel tracking
MOST CHOSENCustom Shopify / WooCommerceGrowing DTC brands and migrationsFrom $6,400per store✓Custom design and theme sections✓Migration with redirects✓Klaviyo abandoned-cart flows✓Speed and SEO setup
Shopify Plus & headlessHigh-volume, international or B2B storesCustomquote✓Headless or Plus checkout✓ERP and inventory integration✓Multi-currency and wholesale✓Dedicated team and SLA
Indicative prices, excluding taxes, Shopify plan and app fees. Fixed quote after a 20-minute call.
Compare
Seoily vs a freelancer vs a large agency
Store buildSeoilyCustom theme, built for speedFreelancer: Template with tweaksLarge agency: Custom, long timelines
Local checkoutSeoilyShop Pay, Apple Pay, sales tax set upFreelancer: Basic gateway onlyLarge agency: Yes
Averages from Shopify Analytics, GA4 and PageSpeed Insights across stores on our growth plan · updated quarterly
Why Seoily
Why DTC brands pick Seoily for their store
BUILDCONVERTRETAINGROW
SEOILYYour store
shopify: new order $30stripe: payment capturedshipstation: 46 orders shipped via UPSklaviyo: cart recoveredmeta capi: purchase matchedpagespeed: 92 on mobilejudge.me: new 5★ reviewga4: conversion rate 2.4%
shopify: new order $30stripe: payment capturedshipstation: 46 orders shipped via UPSklaviyo: cart recoveredmeta capi: purchase matchedpagespeed: 92 on mobilejudge.me: new 5★ reviewga4: conversion rate 2.4%
01Shopify and WooCommerce specialistsDevelopers who build and fix stores every month.
02Checkout built for your buyersShop Pay, Apple Pay, PayPal, sales tax and UPS or FedEx rates.
03Build and grow in one placeStore, ads, SEO and email from one team.
04Speed budgets on every themeLean themes and fewer apps, tested on mid-range phones.
05Fixed price, dated launchYou know the cost and launch date before we start.
06Your store, your dataStore, domain, theme code and customer data are yours. Payments stay PCI-safe.
New YorkLondonTorontoSydneyDubaiLos AngelesChicagoMelbourneSingaporeSan FranciscoManchesterAustinDublinMiami
FAQ
Questions people ask about ecommerce development
A theme-based Shopify store starts from $2,100 a custom-designed Shopify or WooCommerce store from $6,400 and Shopify Plus or headless builds are quoted after discovery. Monthly Shopify fees, apps and payment processing are extra.
Shopify suits most DTC brands: it’s fast to launch, secure and easy for your team to run. WooCommerce suits brands that want full control of hosting and content, or already run a large WordPress site.
A theme-based store takes 3–5 weeks, a custom-designed store 6–10 weeks, a migration 4–8 weeks and a headless or marketplace build 3–5 months. Migrations keep your rankings: every old URL is redirected to its new one.
Yes. We set up Shopify Payments, Stripe, PayPal, Apple Pay and Shop Pay, shipping rates through ShipStation, UPS, FedEx or USPS, and sales tax with Shopify Tax or Avalara. Payments stay PCI-safe because card data never touches your store.
Yes. We work with clients worldwide, schedule calls in your time zone, and keep hours that overlap your workday. Your weekly call is booked at a time that suits you.
One account lead is your main contact, with a weekly video call, a shared Slack channel and a staging store you can click through at any time. You review designs and test orders before anything goes live.
You do. The Shopify account, domain, theme code, products and customer data are in your name from day one, and we sign an NDA if you need one.
Your product list with photos and prices, brand assets, shipping and return policies, and access to your current store if you have one.
No honest agency can guarantee sales. We commit to speed and process instead: a page-load target, every checkout path tested, and tracking that ties each order to its source. Stores on our growth plan average a 2.4% conversion rate.
A freelancer suits small theme tweaks. A large or local agency suits brands that want in-person meetings and have the budget. A senior offshore team like ours builds the store and runs ads, SEO and email for roughly a third to half of typical agency rates, with calls in your hours.
Talk to the team
Ready to sell online?
Talk to the team that builds stores and fills them.
