Shopify Plus agency · California
Shopify agency in California: we design, build and grow Shopify and Shopify Plus stores for California brands.
We’re the Shopify Plus agency California brands hire when they have outgrown a templated theme: senior-only engineering for retail, DTC, B2B and wholesale teams across Los Angeles, San Francisco, San Diego and Sacramento, delivered remotely with calls in Pacific Time.
5.0 on Shopify Partners · Premier Verified on Clutch
What we do in California
What we build for California brands
Five services with their own California page, scoped for the traffic swings California stores see — the holiday peak, back-to-school and year-round tourism — plus the retention and lifecycle work that keeps a California store growing after launch, delivered by the same team.
Build
Ecommerce development
Pixel-perfect custom Shopify storefronts for California DTC, retail and service-commerce brands — checkout logic, B2B portals, integrations and automation, engineered for the traffic you actually get.
See the service pageMigrate
Platform migration
Move onto Shopify without losing data, SEO or order history. The URL map is built first, source and destination are reconciled row by row, and cutover takes minutes, never a Friday.
See the service pageGrow
Conversion rate optimisation
A/B tests, PDP and checkout audits and heatmap-backed fixes that lift conversion from the traffic California stores already have. Audits from $1,800; only significant winners ship.
See the California pageSpeed
Speed optimisation
Core Web Vitals fixed in code, not with another speed app. Theme refactor, app and script cleanup, image pipeline — verified on real devices before California’s sales days arrive.
See the California pageBuild
Headless development
Hydrogen or Next.js on the Storefront API — sub-second load and full design freedom, with checkout, inventory and orders still on Shopify.
See the California pageBuild
App development
Custom Shopify and Shopify Plus apps for California stores that need behaviour no public app delivers — private apps for internal workflows, public apps for the App Store.
See the California pageAi
Agentic commerce
Get your California store found, quoted and bought from inside ChatGPT, Microsoft Copilot, Google AI and Perplexity — schema, feeds, agentic storefronts and AI revenue tracked as its own channel.
See the service pageGrow
Email & SMS marketing
Klaviyo flows, campaigns and SMS built and run by the engineers who know your store, so lifecycle revenue is tracked as its own channel rather than guessed at.
See the serviceGrow
Retention & loyalty
Subscriptions, loyalty and the flows that turn a first order into a second — the work that decides whether a California store grows after launch or just replaces churn.
See the service
What California sells online
Four categories that drive California ecommerce, and what each one changes in the build.
Written for California. Where our own published work matches a category, it is linked.
California has more ecommerce categories than any other state, but four of them set the rules for most stores built here: wine and spirits, apparel and beauty, specialty food from the Central Valley and the coast, and design-led consumer products from the tech economy. Each carries its own compliance or build requirement.
Wine and spirits
Napa, Sonoma, Paso Robles and the Central Coast sell direct to consumers under state-by-state shipping law. The store needs age verification, a compliance partner, shipping rules by destination state, and club memberships that bill on release dates.
Club and subscription programmesApparel, beauty and wellness
Los Angeles is the country’s apparel and beauty base, and California’s Prop 65 warnings and privacy law apply to every store selling into the state. We build those into the theme, alongside the shade, size and replenishment logic of our own beauty work.
CocoLash case studySpecialty food and agriculture
Almonds, dates, olive oil, citrus and coffee roasters sell nationally from farms and small producers. Harvest-timed catalogues, perishable shipping windows and a wholesale portal for grocers and restaurants are the usual build.
B2B and wholesaleDesign-led consumer products
Bay Area and LA brands arrive with a design system and expect it built exactly. That is Figma-to-Shopify work: a custom theme matched to the file and editable afterwards, as we did for KIF.
KIF case study
How we work
A six-step process tuned for speed and zero surprises.
Weekly demos, a transparent board, senior engineers on every call — and kickoffs scheduled in Pacific Time.
Plus Audit
What you have, what you’re paying for, and which Plus-only features you’re not using.
Week 1Scope
We define exactly which capabilities to deploy, with a written scope and a fixed number.
Week 1–2Build Phase
Three to eight weeks per scope, with weekly demos and direct Slack access to your engineers.
Week 2–7Migration
Legacy checkout.liquid migrated to Checkout Extensions, with no loss of custom logic.
Week 6–7QA
Full device-matrix QA on Plus features in a staging environment before anything ships.
Week 7–8Launch
Go-live plus 30 days of post-launch monitoring, with a rollback plan on standby.
Week 6–7Proof
Real builds. Verified numbers.
Every number here is verified with the brand it belongs to.
- Read the case study
Gene Juarez
The Zenoti booking integration most agencies declined — retail and salon booking unified on Shopify Plus.
- Read the case study
GetKif
Figma to fully custom Shopify theme: pixel-perfect, fast, and editable end-to-end from the Theme Customizer.
- Read the case study
PawGuard
A new DTC brand on a fully custom Shopify theme: buyer-led homepage filters and Shopify Markets from day one, live in July 2026 at a 1.4-second LCP.
- Read the case study
CocoLash
A Shopify storefront built from zero and grown for three years: ten lash styles on one content system, Subscribe & Save, +63% organic.
- Read the case study
True Glory Hair
A Shopify Plus build for a wig brand, then three years of development, CRO, Attentive retention and SEO: +27% repeat purchases.
- Read the case study
OuchieCap
A custom Shopify theme for an inventor-led children’s brand, twenty SEO articles and the OuchieSnuggles sub-brand: +22% revenue.
Shopify agency in California
A Shopify agency in California for stores that are not on Plus yet.
Same engineers, same written scope, on Shopify or Shopify Plus.
Not every California brand that calls a Shopify agency is on Shopify Plus, and not every one should be. A store doing its first few million on standard Shopify gets the same senior engineers, the same written scope and the same fixed price as a Plus build: a custom theme instead of a customised one, a migration done with a redirect map, the speed fixed in code rather than with another app. When the numbers say Plus — checkout customisation, B2B, more than one market — we say so, and the Shopify Plus page works it out from your figures.
From Los Angeles to Sacramento, calls run in Pacific Time and the local facts that change a build — California charges state sales tax plus district rates; the peaks are the holiday peak, back-to-school and year-round tourism — are already in the scope. The pages below are the five services we run for California brands; the Shopify agency page has every service, the four ways an engagement starts — from a $1,500-a-month retainer up — and the four places to verify us.
Frequently asked questions.
Do you work with Shopify merchants based in California?
Yes. We work with Shopify and Shopify Plus merchants across California, including Los Angeles, San Francisco, San Diego and Sacramento, remotely, with calls scheduled in Pacific Time. We travel for kickoff workshops and launch weeks when a project warrants it.
Which services do you offer in California?
Shopify Plus development, custom ecommerce development, platform migration, conversion rate optimisation, speed optimisation, agentic commerce and AI visibility, headless development on Hydrogen or Next.js, and custom app development, each with its own California page. Everything else we do — retention, email and SMS, SEO and GEO, support — is delivered to California brands from the same team. Migrations, B2B, CRO, retention — is delivered to California brands the same way.
How much does Shopify Plus development cost?
It is scoped as one written number before any work starts, sized to the catalogue, the integrations and the migration rather than to a rate card — so a California brand doing its first million and a Plus brand with an ERP get very different figures for the same page. The smallest way in is a monthly retainer from $1,500; the packages page shows how larger builds are scoped, and what Shopify Plus agencies charge puts the market ranges beside them.
How long does a project take?
Eight weeks on average from kickoff to launch on Shopify Plus. Headless builds take 8–14 weeks, speed optimisation 3–5 weeks and agentic commerce setup 2–8 weeks. We tell you which category you are in during the audit, not after signing.
Can you handle California sales tax and multi-location POS?
Yes. California charges state sales tax plus district rates; we configure Shopify Tax or your existing provider for it and for the other states you ship into, and connect POS locations so inventory, customers and orders stay unified across stores and online.
Will the store hold up during the holiday peak, back-to-school and year-round tourism?
That is what we build and test for. We load-test against your own peak rather than an average Tuesday, and speed work is verified on real devices and real networks before the season arrives.
Can you build multi-currency and multi-language storefronts?
Yes. Shopify Markets with localised domains, translated content, local currencies and duty handling — a genuinely local experience for every market you sell into, from one California store.
What happens after launch?
A monitored launch window, then most California clients move into a monthly retainer for development, CRO, lifecycle marketing, SEO and GEO, performance or support, with the same engineers who built the store. 92% of retainers renew.
Is Aqsa Shahzad a Shopify agency in California or only a Shopify Plus agency?
Both. We are a Shopify agency — a Shopify Select Partner since March 2022, 5.0 in the Partner Directory — that builds on Shopify and on Shopify Plus for California brands in Los Angeles, San Francisco, San Diego and Sacramento. A standard-Shopify store gets the same engineers and the same written scope; Plus is recommended only when the store's numbers call for it. Engagements start from a $1,500-a-month retainer; the full service list and where to verify us are on the Shopify agency page.
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Shopify Plus experts
Let's talk Shopify, Shopify Plus and the store you actually want.
An accredited Shopify Plus agency that designs, builds, migrates, supports and grows stores for brands that have outgrown templates. Ready when you are: talk to an engineer about the project.
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