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20+
Years delivering eCommerce
16
Countries served
400+
Engineers and specialists
ISO
27001 & 9001 Certified
What We Deliver
Certified Shopify Development for San Francisco Businesses
Sigma builds Shopify stores for San Francisco’s retail, wine and food, manufacturing, and defence-adjacent businesses. Custom Liquid themes, Shopify Plus configuration, ERP and payment integrations, app development, and platform migrations—delivered by certified engineers from global delivery centres, not assembled by freelancers.
Every engagement is scoped before it starts, priced in writing, and supported after launch. Your assigned team holds active Shopify certifications—Foundations and Liquid Storefronts—and stays on the project from discovery through to post-launch support.
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Full-stack delivery: store setup, theme, apps, integrations, Shopify Plus -
Dedicated teams and ongoing retainer support -
Transparent pricing agreed upfront before work begins
Our Stack
Shopify Technologies We Build With
Focused on Shopify-native tools. Nothing added for padding.
Shopify
Shopify Plus
Liquid
Storefront API
Admin API
Our Services
Everything Your Shopify Store Needs. One Team. Full Stack.
From the first scoping conversation to ongoing post-launch performance work, here’s what Sigma delivers for San Francisco businesses.
Shopify Store Setup, Theme Development & UI Enhancements
SF consumers know what good product design looks like—they work in it. A slow-loading store, a borrowed Shopify theme, or a mobile experience that doesn’t hold up will signal more than just a poor build. It signals that your brand didn’t care enough to do it right. Sigma builds Shopify storefronts in custom Liquid that load fast, look exactly like your brand, and are engineered to convert from the first visit.
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Responsive Liquid themes built from your brand identity—not adapted from a shared template library -
Custom Shopify store setup for B2B and B2C, built around SF consumer expectations and US-native payment methods including Shop Pay, Afterpay, and Klarna -
SEO-clean, performance-optimized code that doesn’t create technical debt for your engineering or marketing team -
Mobile-first storefronts connected to your analytics and marketing stack before the store goes live
Shopify Plus, B2B & Customization Services
The Bay Area has a substantial B2B commerce layer—SaaS companies selling team licenses alongside physical goods, hardware startups managing reseller relationships, food and beverage companies running trade accounts alongside DTC. Standard Shopify doesn’t handle that complexity. Shopify Plus does. Sigma configures it for Bay Area businesses where B2B isn’t a side note.
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B2B trade portals with custom logins, tiered pricing, role-based access, and catalog restrictions per buyer segment -
Shopify Plus enterprise setup for omnichannel operations—DTC, wholesale, and reseller channels from one platform -
Workflow automation and system integrations built to handle Bay Area operating volumes and API requirements -
Checkout.liquid customization for Plus stores—fewer steps, higher order completion
Shopify App Development Services
San Francisco clients tend to have the most specific technical requirements in the US—complex product configurations for hardware, subscription and usage-based billing models, integration with internal tools and APIs that don’t have Shopify connectors, and custom analytics pipelines. Sigma builds Shopify apps that do exactly what your business needs—not a workaround that breaks when the edge case hits.
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Custom apps for B2B and B2C workflows that prepackaged solutions don’t address reliably -
Apps integrated with Shopify Flow, webhooks, and metafields—built as part of the platform, not layered on top -
Performance-optimized code that adds no page weight or API latency -
Embedded analytics and custom reporting pipelines so your engineering team has the data they need
Shopify App Integration Services
For Bay Area companies running Shopify alongside an existing product or internal tech stack, integration isn’t optional—it’s the whole point. Sigma builds integrations that connect Shopify to your full operation, whether that’s a SaaS platform, an ERP, a 3PL, or a custom internal system your team built in-house.
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ERP, POS, CMS, CRM, and US payment gateway integrations including Stripe, Shop Pay, Klarna, and Affirm -
Custom API integrations for internal tools and proprietary systems that don’t have out-of-the-box Shopify connectors -
Real-time order, inventory, and customer data sync across every connected system -
Shopify analytics and conversion tracking configured before go-live so your data is usable from day one
Shopify Checkout Customization & Optimization
SF shoppers make decisions quickly and leave fast when the experience doesn’t hold up. A checkout with unnecessary steps, missing payment options, or mobile performance issues loses the sale at the moment you’ve already earned it. Sigma rebuilds the checkout at the Shopify Plus level—not patched at the theme layer where the margin for change is limited.
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Shopify Plus checkout.liquid customization—Shop Pay, Afterpay, Klarna, Affirm, and BNPL flows built for how US buyers pay -
Store-wide performance optimization, not just checkout-page adjustments -
Infrastructure improvements so high-traffic events—product launches, Black Friday, Cyber Monday, and SF-specific cultural and tech calendar moments—don’t create downtime -
Funnel analytics and structured A/B testing so every change is measured against real data
Shopify Migration Services
San Francisco businesses that come to Sigma for a migration usually have the same priority: years of organic search equity that can’t be sacrificed in a platform switch. That concern is entirely justified. Sigma has run enough migrations to know where each one breaks and how to prevent every failure point before the project gets started.
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Zero-downtime migrations from Magento, WooCommerce, BigCommerce, or older custom-built platforms -
Full URL redirect mapping so your organic rankings hold through the transition -
Clean, verified transfer of every product, customer record, and order in the database -
Post-migration QA and monitoring—Sigma stays on until everything is confirmed working
Shopify Support & Maintenance Services
A well-built store still needs ongoing attention. Platform updates break things, apps conflict, and traffic events reveal gaps that weren’t visible at lower volumes. Sigma’s post-launch support catches all of it before your SF customers notice anything—through proactive monitoring rather than reactive ticket handling.
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Proactive monitoring and real-time issue resolution—not a support queue reviewed between other projects -
App and platform updates managed before they create compatibility problems -
Regular security audits and performance reviews tied to your revenue goals -
Ongoing CRO and feature development as your store needs to do more
Industries
Shopify Stores for San Franscisco Businesses
Sigma has commerce delivery experience across the sectors that define San Francsico’s market.
Government and Procurement
Compliant trade portals and digital services
Creative and DTC Brands
Fashion, homewares, and design-led retail
Food and Hospitality
Specialty food, restaurant merchandise, and D2C
Technology
Commerce embedded into digital products
Professional Services
B2B trade and service-based commerce
Health and Wellness
Supplements, skincare, and compliant retail
B2B and Wholesale
Trade portals and multi-tier pricing
Education and Publishing
Digital products and subscription models
How We Work
Our Shopify Development Process
No black boxes. No shifting estimates. Every Sigma project follows a six-stage delivery process that keeps SF clients informed and on schedule.
01
Discovery & Strategy
We start with your customers, your systems, and your commercial goals—before any code is written. The brief drives every decision.
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Theme Design & Customization
Custom or enhanced Shopify themes built for speed and conversion on every device. Design is approved before it goes to engineering.
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App Development & Integration
Custom apps, ERP connections, payment integrations—built and tested as a complete working system, not assembled in the last sprint.
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Quality Assurance & Testing
Full performance, security, cross-browser, and cross-device testing before launch. Your customers don’t find the bugs.
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Store Launch & Deployment
Go-live is a planned, monitored event. Sigma handles deployment and stays on top of the first 48 hours.
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Ongoing Maintenance & Optimization
Sigma doesn’t exit after launch. We stay on – monitoring, optimizing, and building as your Bay Area business scales.
Why Sigma
Why San Francisco Businesses Choose Sigma for Shopify
SF has plenty of developers who know Shopify. What’s harder to find is a certified partner with structured delivery, genuine security practices, and the technical depth to handle what Bay Area businesses actually need.
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We build for revenue, not just for launch
Going live is the beginning. Sigma designs stores to convert traffic into customers and keeps improving that performance after the store is running.
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A commerce partner, not a code vendor
Sigma aligns Shopify’s capabilities with how your business makes money and how your stack works. Every recommendation has a commercial and technical rationale behind it.
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Fast stores. Fewer abandoned sessions.
Performance is a revenue variable. Sigma builds Shopify stores that load fast, handle traffic spikes cleanly, and don’t create unnecessary friction between a Bay Area customer and a completed purchase.
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Security and compliance that stands up
ISO 27001:2022 certified. Every engagement includes security practices that protect customer data and support compliance with California’s CCPA and broader US requirements – built in from the start, not retrofitted.
Certifications
Certified. Not Just Claiming to Be.
In a city where people know what engineering credentials actually mean, we’d rather show them than talk about them. These are active certifications held by the engineers on your project.
Shopify Partner
Shopify Certified Foundations
Certified Liquid Storefronts
Trusted by Brands Across 16 Countries
From San Francisco businesses to global enterprise retailers, Sigma has delivered commerce outcomes that hold.
In Production
Shopify Work That Shipped
Real projects. Verified outcomes. Full case studies on Sigma’s website.
Australia – Beauty and Retail
Napoleon Perdis Left Behind a Legacy Platform and Moved to Shopify Plus
Napoleon Perdis is a well-known Australian cosmetics brand sold across New Zealand too. Sigma migrated them to Shopify Plus, improving store performance and cutting maintenance overhead.
Improved performance, reduced maintenance cost
USA – B2C / Subscription
Fire Department Coffee Needed Subscriptions, Wholesale, and Accessibility
This US brand had three firm requirements for a single Shopify build: subscriptions, wholesale, and WCAG accessibility. Sigma delivered all three without cutting corners.
Subscriptions, wholesale, and accessibility – one build
Romania – Multi-Store Plus
50+ Shopify Plus Stores, No Real-Time Stock Visibility – Sigma Solved Both
A global beauty brand running 50+ Shopify Plus stores with inventory errors. Sigma unified inventory management and automated workflows across every location.
100% real-time stock accuracy across 50+ locations
Frequently Asked Questions
What does a Shopify development company in San Francisco actually do?
Quite a bit. A Shopify development company builds stores, customizes Liquid themes, develops custom apps for workflows the app store doesn’t handle, connects Shopify to ERP and CRM systems and internal APIs, configures Shopify Plus for enterprise requirements, handles platform migrations, and provides ongoing post-launch support. Sigma delivers all of this from structured delivery centers with dedicated engineers – not through a freelancer pool that varies by project.
What Shopify certifications does Sigma hold?
Sigma is an active Shopify Partner with certifications in Shopify Foundations and Certified Liquid Storefronts for Theme Developers – earned and actively maintained by the engineers doing the work. Beyond those: Adobe Solution Partner (Bronze), AWS Certified Partner, Microsoft Silver Partner, ISO 27001:2022, and ISO 9001:2015. All renewed on a current basis.
Can Sigma migrate our existing store to Shopify?
Yes – and it’s a process Sigma has run many times with a methodology that prevents the common failures. We migrate from Magento, WooCommerce, BigCommerce, and older custom platforms to Shopify and Shopify Plus. Every URL redirect is mapped to protect organic rankings. All product data, customer records, and order history come across completely. You don’t discover missing data after go-live.
Does Shopify work well for Bay Area SaaS companies and consumer hardware brands?
Yes, when it’s configured for the specific requirements. For SaaS companies adding a commerce layer, Sigma builds the Shopify integration to work alongside your existing product stack – not as a standalone island. For consumer hardware brands, this typically means complex product variants, subscription and warranty registration workflows, reseller B2B portals, and integration with manufacturing or inventory management systems. Sigma scopes these requirements carefully before the build starts.
How much does Shopify development cost in San Francisco?
It depends on what you’re building and how it connects to your existing stack. A branded DTC store is a different project from a Shopify Plus deployment with custom API integrations, enterprise B2B functionality, and internal tool connections. Sigma scopes every engagement properly, provides a clear estimate before work starts, and holds to it. No estimates that shift when you get the invoice.
Does Sigma understand CCPA and California data privacy requirements?
Yes. Sigma builds CCPA compliance into every California engagement from the start – opt-out mechanisms, data handling documentation, privacy policy integration, and third-party tracking configurations that respect California consumer rights. This isn’t something that gets added at the end. It’s part of the architecture from the first sprint.
Can Sigma build a headless Shopify store?
Yes. Sigma builds headless storefronts on React and Next.js using the Shopify Storefront API – a natural fit for Bay Area tech companies embedding commerce into an existing product or SaaS platform. Being direct about it: headless adds real architectural complexity and ongoing maintenance requirements. Sigma will tell you honestly whether it’s actually the right architecture for your situation – and why.
Why choose Sigma over a local San Francisco Shopify developer?
SF has strong Shopify developers and we know it. What most local freelancers and smaller agencies can’t offer is a structured six-stage delivery process, dedicated QA engineers separate from the build team, enterprise-grade security, and sustained post-launch support. Sigma is a certified Shopify Partner with 20+ years of commerce delivery and 400+ specialists. You get a team that’s still accountable after launch – not one that moves on the week after handover.
Ready to Start?
Let’s Build a Shopify Store That Sells
Talk to a Sigma Shopify specialist. No pitch decks, no obligation – just a direct conversation about what your San Francisco business needs.