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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 Chicago Businesses
Sigma builds Shopify stores for Chicago’s CPG brands, food and beverage companies, fashion retailers, industrial B2B distributors, and healthcare businesses. Custom Liquid themes, Shopify Plus for wholesale and dealer portals, integrations, migrations, and post-launch support—delivered by certified engineers from global delivery centers.
Every project is scoped and priced before work starts. Your assigned engineers hold active Shopify Foundations and Liquid Storefronts certifications. Sigma stays on after launch with retainer-based support and ongoing performance work.
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Full-stack delivery: store setup, theme, apps, integrations, Shopify Plus -
Dedicated teams and retainer support -
Transparent pricing agreed upfront
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. End-to-End Ownership.
From your first design review to ongoing post-launch optimization, here’s what Sigma delivers for Chicago businesses.
Shopify Store Setup, Theme Development & UI Enhancements
Chicago’s retail consumer base is experienced and unforgiving. They shop across local and national brands, compare fast, and leave a store that loads slowly or feels generic before they’ve found a reason to stay. Sigma builds Shopify storefronts in custom Liquid that load fast, reflect your brand with precision, and are structured to convert rather than just to go live.
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Responsive Liquid themes built from your brand guidelines—not adapted from a shared template library -
Custom Shopify store setup for B2B and B2C, built around Chicago consumer behavior and US-native payment methods including Shop Pay, Afterpay, and Klarna -
SEO-clean, speed-optimized code that doesn’t leave technical debt for your marketing team to manage later -
Mobile-first storefronts connected to your analytics and marketing stack before the store launches
Shopify Plus, B2B & Customization Services
Chicago has one of the most developed wholesale and distribution networks in the Midwest—from food and beverage distributors running multi-tier trade accounts to industrial manufacturers with hundreds of dealer relationships. Standard Shopify doesn’t handle that complexity. Shopify Plus does. Sigma configures it for businesses where B2B is a primary revenue channel, not an afterthought.
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B2B trade portals with custom logins, tiered pricing, role-based access, and catalog restrictions per buyer tier -
Shopify Plus enterprise setup for omnichannel operations—DTC, wholesale, and retail running from a single platform -
Workflow automation and backend integrations built to handle the order volumes Chicago’s industrial and food distribution businesses generate -
Checkout.liquid customization for Plus stores—fewer steps and higher completion rates
Shopify App Development Services
Chicago’s mix of legacy brands going digital and tech-native startups scaling fast means highly specific operational requirements that generic apps don’t satisfy cleanly. Sigma builds custom Shopify apps for the actual business logic yours runs on—not the nearest available approximation from the app marketplace.
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Custom apps for B2B and B2C workflows that prepackaged solutions don’t cover reliably -
Apps integrated with Shopify Flow, webhooks, and metafields—part of the system from the start -
Performance-optimized code that adds no page weight or storefront latency -
Embedded analytics and reporting so your Chicago team has real visibility inside Shopify admin
Shopify App Integration Services
Running Shopify disconnected from your ERP, your 3PL, and your CRM creates manual reconciliation work at every transaction. Chicago businesses operating at scale don’t have margin for that. Sigma builds integrations that connect Shopify to your full operation—so inventory, orders, and customer data stay accurate across every system without manual intervention.
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ERP, POS, CMS, CRM, and US payment gateway integrations including Stripe, Shop Pay, Klarna, and Affirm -
Real-time order, inventory, and customer data sync—no end-of-day exports and no reconciliation spreadsheets -
Automated workflows that maintain data accuracy without constant oversight -
Shopify analytics and conversion tracking configured before go-live so your data is useful from day one
Shopify Checkout Customization & Optimization
Chicago shoppers are comparison buyers who move on fast when checkout friction appears—a missing payment option, too many steps, or a mobile experience that doesn’t hold up. Sigma addresses this at the Shopify Plus level, where the checkout is rebuilt to match your buyers and your brand rather than patched at the surface.
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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 speed optimization, not just checkout-page adjustments -
Infrastructure improvements so high-traffic periods—Black Friday, Cyber Monday, Chicago-specific retail events, and Q4 sales pushes—don’t bring the store down -
Funnel analytics and structured A/B testing so every change is backed by real data
Shopify Migration Services
Chicago businesses running on legacy platforms come to Sigma with a consistent priority: they’ve built organic search rankings over years and they can’t afford to lose them. That’s exactly the right concern. Sigma has handled enough migrations to know where each one breaks and how to prevent all of those failures before the project starts.
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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 intact -
Clean, verified transfer of every product, customer record, and order in your database -
Post-migration QA and monitoring—Sigma stays engaged after go-live until everything is confirmed
Shopify Support & Maintenance Services
A well-built store still needs ongoing attention. Platform updates introduce compatibility issues, apps change behavior, and traffic spikes reveal performance gaps that weren’t visible at launch. Sigma’s post-launch support addresses all of it before your Chicago customers encounter it.
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Proactive monitoring and real-time issue resolution—not a support queue reviewed at the end of the day -
App and platform updates managed before they create downstream problems -
Regular security audits and performance reviews aligned to your revenue targets -
Ongoing CRO and feature development as your business scales and your store needs to do more
Industries
Shopify Stores for Chicago Businesses
Sigma has commerce delivery experience across the sectors that define Chicago 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.
02
Theme Design & Customization
Custom or enhanced Shopify themes built for speed and conversion on every device. Design is approved before it goes to engineering.
03
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 Chicago business scales.
Why Sigma
Why Dallas Businesses Choose Sigma for Shopify
Chicago has no shortage of Shopify developers. What it does have a shortage of is certified partners who deliver properly, stay accountable, and don’t disappear after handover.
01
We build for revenue, not just for launch
Going live is the beginning. Sigma designs stores to convert traffic into buyers and keeps improving 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. Every recommendation has a commercial rationale.
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Fast stores. Fewer abandoned sessions.
Page speed and checkout friction directly affect revenue. Sigma builds stores that load fast and don’t place unnecessary obstacles between a buyer and a completed order.
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Security and Compliance That Holds
ISO 27001:2022 certified. Every engagement includes security practices that protect customer data and support compliance with US data privacy requirement across development,and production.
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 Chicago 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 Chicago do?
More than most companies expect. A Shopify development company builds stores, customizes Liquid themes, develops custom apps for workflows the app store doesn’t cover reliably, connects Shopify to ERP and CRM systems, configures Shopify Plus for enterprise requirements, handles platform migrations, and provides ongoing post-launch support. Sigma delivers all of this from structured delivery centers – not through a freelancer network.
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 maintained by the engineers who do the actual work. Beyond those: Adobe Solution Partner (Bronze), AWS Certified Partner, Microsoft Silver Partner, ISO 27001:2022, and ISO 9001:2015. All actively renewed.
Can Sigma migrate our existing store to Shopify?
Yes – and it’s a process Sigma has run many times with a clear methodology. We migrate from Magento, WooCommerce, BigCommerce, and older custom-built platforms to Shopify and Shopify Plus. Every URL redirect is mapped to protect your organic rankings. All product data, customer records, and order history come across completely. You don’t discover what’s missing after go-live.
Does Shopify work well for Chicago’s CPG, food and beverage, and industrial B2B sectors?
Yes, when configured correctly for each. For CPG and food brands going DTC, Sigma builds storefronts with subscription models, compliance messaging where required, and US 3PL integrations for efficient fulfillment. For industrial and B2B manufacturers, Shopify Plus handles dealer portals, volume pricing, restricted catalogs, and PO-based purchasing flows. Chicago’s commercial breadth is exactly what Shopify Plus was designed for.
How much does Shopify development cost in Chicago?
It depends on scope and integration requirements. A branded DTC storefront is a different project from a Shopify Plus deployment with industrial ERP integration and custom B2B portal development. Sigma scopes every project carefully, provides a clear estimate before work begins, and holds to it. No estimates that grow when you get the invoice.
Can Sigma build a Shopify store that handles both DTC and industrial B2B from the same platform?
Yes. Shopify Plus supports both channels from a single store – a full DTC storefront for direct customers and a B2B portal with custom logins, tiered pricing, catalog restrictions, and wholesale ordering workflows for industrial buyers and distributors. Sigma has built this for businesses running both channels simultaneously and knows the complexity involved before the build starts.
Can Sigma build a headless Shopify store?
Yes. Sigma builds headless storefronts on React and Next.js using the Shopify Storefront API – suited to Chicago tech companies embedding commerce into an existing product, or enterprise brands needing full front-end control and maximum page performance. Being direct: headless adds real architectural complexity and ongoing maintenance requirements. Sigma will tell you honestly whether it’s the right fit before recommending it.
Why choose Sigma over a local Chicago Shopify developer?
Chicago has capable local developers – that’s well known. What most local freelancers and smaller agencies can’t offer is a structured six-stage delivery process, dedicated QA, enterprise-grade security, and sustained post-launch support. Sigma is a certified Shopify Partner with 20+ years of commerce delivery and 400+ specialists across four delivery centers. You get accountability that lasts well past the handover date.
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 Chicago business needs.