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Enterprise-Grade BigCommerce Development
for Chicago
Chicago is the commercial backbone of the Midwest. Manufacturing, distribution, food production, and wholesale trade define the city’s economy, and those industries are going digital fast. B2B eCommerce in the US is projected to hit $36 trillion by 2026, and Chicago businesses are right in the middle of that shift.
BigCommerce’s native B2B capabilities make it a strong fit for Midwest manufacturers and distributors moving ordering online for the first time. Sigma builds the stores that make that transition practical – connecting BigCommerce to ERPs, configuring trade portals, and handling the complexity that comes with digitising operations that have run on phone calls and spreadsheets for decades.
What Are BigCommerce Development Services?
Building and connecting a BigCommerce store for the way Chicago businesses actually sell. For manufacturers and distributors, that means B2B trade portals with tiered pricing, quoting tools, and PO support. For retailers, it’s scalable DTC storefronts. For everyone, it’s US payment processing, multi-carrier shipping, and Illinois sales tax compliance.
Our Services
Sigma’s BigCommerce Development Services
for Chicago
Migration Services
Sigma migrates Chicago businesses to BigCommerce from legacy ERP-based ordering systems, outdated Magento installs, and platforms that can’t handle B2B. Data comes across clean. SEO stays intact.
Full catalogue, customer database, and order history brought across intact
SEO redirect strategy that maintains your existing search positions
Platform foundation built for growth over years, not months
Integration Services
A Chicago manufacturer selling through reps, distributors, and a new online channel needs all three to reflect the same pricing and inventory. Sigma connects BigCommerce to NetSuite, SAP, QuickBooks, and the warehouse and shipping systems that keep Midwest supply chains moving.
Deep ERP integration: NetSuite, SAP, QuickBooks, Sage
Multi-carrier shipping: USPS, UPS, FedEx, LTL freight
B2B pricing engines that handle customer-specific rates and volume discounts
Theme Development
A wholesale buyer logging into your trade portal at 6am needs a different experience than a consumer browsing on their phone at lunch. Sigma builds BigCommerce storefronts that serve both audiences properly.
Separate B2B and B2C experiences tailored to each audience
Load speeds optimised for mobile buyers and desktop procurement managers
Headless architecture available when standard themes can’t keep up
Support and Maintenance
US-hours support. Security, compliance, and performance monitoring so your Chicago store stays reliable while your team focuses on operations.
System health monitoring that catches failures before they cost sales
Illinois compliance and PCI security managed on your behalf
Coordinated updates that keep your integrations running smoothly
Store Development
Chicago food manufacturer launching DTC. Midwest distributor putting its 10,000-SKU catalogue online. Multi-location retailer on Michigan Avenue unifying inventory. Sigma builds around the way you actually operate.
Architecture for large catalogues and complex pricing
B2B checkout with PO, net terms, and quoting
Multi-channel: Amazon Business, direct, and wholesale
App Development
Standard apps don’t handle Chicago’s industrial B2B workflows. Sigma builds custom apps for complex quoting, freight rate calculations, customer-specific catalogues, and the ordering logic that manufacturers actually need.
Custom logic for quoting, freight rates, and customer-specific catalogues
Backend automation that runs without touching storefront performance
Architected to stay functional as BigCommerce evolves
The Sigma Way of BigCommerce Development
Sigma operates from Irvine, California. 15+ years delivering commerce. ISO 9001 and 27001 certified. Every project gets dedicated QA and post-launch support.
The Sigma Edge:
- Budgets that hold
- Revenue you can measure
- Stable during peak ordering
- Grows without a rebuild
- Lower TCO
- US-hours support
Our Process
How Sigma Turns BigCommerce
Into Revenue Infrastructure
How we get your Chicago BigCommerce store from scoping to production.
Follow a manual added link
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Architecture Done Right
Architecture decisions based on platform strengths
Proven BigCommerce Growth, Engineered by Sigma
Real outcomes from production BigCommerce stores. Not projections.
+29% online orders through Rebuilt UX and checkout for a specialty food brand
+36% mobile transactions with Mobile-optimised redesign for a consumer retailer
Seamless cross-border fulfilment via Shipping integrations across distributed inventory
Ready to Take Your Chicago Business Online with BigCommerce?
Certified BigCommerce agency. B2B, manufacturing, and enterprise builds for the Midwest.
Trusted by Brands Across 16 Countries
From Chicago, businesses to global enterprise retailers, Sigma has delivered commerce outcomes that hold.
Frequently Asked Questions
Is BigCommerce good for B2B?
Yes. Native B2B with tiered pricing, quoting, PO support, and customer-specific catalogues. Sigma configures all of it.
Where is Sigma?
US HQ in Irvine, CA. US-hours support for Chicago businesses.
How long?
Standard stores in weeks. B2B or catalogue-heavy builds in two to four months.
Can Sigma handle large catalogues?
Yes. We’ve built stores with thousands of SKUs, complex pricing tiers, and custom attribute configurations.
What services for Chicago?
B2B portals, custom themes, migrations, ERP integrations, custom apps, and ongoing support.
Why Sigma?
Structured delivery, ISO security, dedicated QA, and post-launch support that most agencies can’t match.