Best 10 eCommerce Development Companies in Chicago

Introduction

Chicago is quietly becoming one of America’s most strategic cities for ecommerce innovation. Known for its central location, strong tech infrastructure, and diverse economy, the Windy City has emerged as a top destination for companies seeking to build reliable, scalable, and user-focused ecommerce platforms. Businesses across industries are tapping into ecommerce not just to sell more but to deeply analyze customer behavior, personalize experiences, and optimize every aspect of the buying journey.

Yet, for many companies, launching a successful business online still raises key questions: which ecommerce platform to choose, what features to prioritize, and how to create a fast, secure, and engaging website. That is where ecommerce website development companies come in. To help you find the right partner, we have studied Chicago’s most reputable firms and shortlisted 10 that are leading the way in custom ecommerce solutions.

Top eCommerce Development Companies in Chicago

Chicago is home to some of the most trusted ecommerce development firms in the country. Let's examine the 10 companies that have established a strong reputation for developing high-performance e-commerce websites, creating scalable online stores, and delivering tailored e-commerce development services. Whether you are a startup or a global brand, these companies possess the expertise and technical strength to propel your e-commerce business forward.

1. Uncap

Uncap is a boutique ecommerce development company in Chicago that specialises in Shopify Plus migration, performance optimisation, and UI/UX design for ecommerce websites. Known for its agile approach and transparent collaboration, Uncap offers tailored ecommerce development services that prioritise conversions and efficiency. Their work is particularly focused on solving real-time e-commerce challenges, such as slow loading speeds, outdated storefronts, poor integrations, and inefficient shopping carts.

Core services:

• Custom Shopify Plus development

• Shopping cart optimisation and user flow enhancement

• Headless ecommerce integration and migration support

• Performance tuning and page speed improvements

• Shopify maintenance and ongoing support

With a portfolio featuring brands like E3 Spark Plugs and Love & Promise Jewelers, Uncap is an ideal choice for growing ecommerce businesses that need expert Shopify support and storefront performance upgrades.

2. Xumulus

Xumulus delivers flexible and scalable ecommerce platforms for B2B and B2C companies, with strong roots in Magento, BigCommerce, and Oracle ecosystems. Based in Chicago, this development company also offers DevOps support, ERP integration, and digital strategy services. Their projects typically focus on creating ecommerce websites that deliver real-time inventory management, seamless payment gateway integration, and enhanced security protocols.

Core services:

• Magento and BigCommerce development

• Custom plugin development and third-party API integration

• Email marketing automation, among other services, to attract more customers

• UX design and customer journey mapping

• Ecommerce analytics and reporting dashboards

Clients such as Matrix Solutions, BarristerBooks, and Pioneer International trust Xumulus for their ability to align ecommerce functionality with complex backend systems. Ideal for mid-sized companies that require customisation at every stage of development.

3. Blueshoon, Inc.

Blueshoon is a web development company that has carved a niche in ecommerce support for legacy systems and complex digital ecosystems. Their Chicago-based team supports ecommerce website upgrades, backend improvements, and on-demand tech support for long-term partnerships. They operate more like a tech extension of your internal team.

Core services:

• Custom ecommerce development and maintenance

• Legacy website transformation and CMS upgrades

• API integration for payment gateways and ERPs

• Ongoing website performance monitoring and optimisation

• Conversion-focused web design

Their clientele includes companies such as Tonal and Chicago Backflow, demonstrating their ability to support e-commerce operations from the ground up. A dependable option for businesses that need long-term ecommerce support.

4. Adage Technologies

Adage Technologies is one of the best ecommerce website development companies in Chicago with a reputation for working with mission-driven organizations. With a full suite of ecommerce development services, Adage creates digital commerce ecosystems that combine intuitive UX, mobile-first design, and advanced inventory integration.

Core services:

• End-to-end ecommerce development

• CMS and DXP solutions for scalable ecommerce

• AI-powered product search and smart recommendations

• Custom development for accessibility and compliance

• ERP and CRM system integration

Clients include the American Academy of Pediatrics and San Francisco Opera, showing Adage’s strength in developing ecommerce websites for large-scale nonprofits and arts organisations. Ideal for organizations that prioritize scalability and compliance.

5. Codal

Codal is a high-end ecommerce development firm headquartered in Chicago that caters to enterprise brands and fast-growing startups. Specialising in full-stack development, Codal builds digital products that improve revenue, boost conversion rates, and enhance customer retention.

Core services:

• Headless ecommerce website architecture

• Custom Shopify, BigCommerce, and Magento solutions

• AI-driven customer experience features

• UX research and responsive interface design

• Ecommerce mobile app development

Codal has served clients such as Mark Cuban’s Cost Plus Drugs and CallPotential. Known for bringing clarity and speed to complex ecommerce projects, they are a great partner for businesses scaling aggressively.

6. Atwix

Atwix is a Magento powerhouse with a decade of ecommerce development experience. As an Adobe Gold Partner, Atwix brings technical precision and strategic insight to ecommerce projects. Their focus is on building secure, fast, and feature-rich ecommerce websites for global and domestic clients.

Core services:

• Magento ecommerce website development and maintenance

• Custom modules and feature enhancements

• Migration from Magento 1 to Magento 2

• Real-time shipping, inventory, and tax integrations

• Ecommerce consulting and code audits

With clients like MeasureUp and Comdiel, Atwix is ideal for businesses that want to build their ecommerce operations on Magento’s powerful, scalable infrastructure.

7. Kensium

Kensium blends ecommerce development and ERP integration to deliver unified commerce experiences. Based in Chicago, Kensium is well-known for its ability to connect ecommerce platforms to accounting, inventory, and shipping systems. That makes them a go-to choice for B2B businesses seeking to digitize and automate their operations.

Core services:

• Ecommerce and ERP integration

• UI/UX design for ecommerce websites

• Headless commerce development

• Performance optimisation and ecommerce analytics

• Ongoing support and platform migration

Clients such as PinnacleU and Falcon 5 Capital rely on Kensium for unified system workflows. Recommended for businesses looking to streamline ecommerce operations through backend automation.

8. Graveflex

Graveflex is a web development agency that takes a user-centric approach to ecommerce. Known for their sleek UX design and smooth ecommerce flows, Graveflex specialises in launching ecommerce websites that offer engaging experiences across desktop and mobile devices. Their creative approach stands out in Chicago’s ecommerce landscape.

Core services:

• UX design and responsive ecommerce development

• Custom web applications for ecommerce

• Inventory tracking and product display logic

• Integrated payments and loyalty programs

• Mobile-first site optimisation

Their clients, including Tovala and Half the Story, praise the team’s creativity and client-first approach. Graveflex is ideal for design-led businesses focused on customer experience.

9. Digiteon Consulting Private Limited

With a footprint in Chicago and India, Digiteon Consulting offers reliable ecommerce development services to US clients through a hybrid model. The company is well-versed in ecommerce platforms like Magento and BigCommerce, making them a cost-effective partner for businesses seeking scalable ecommerce solutions.

Core services:

• Magento and BigCommerce website development

• Staff augmentation and technical support

• Shopping cart and checkout optimisation

• Inventory and warehouse management tools

• Backend platform integration (ERP, CRM)

Having worked with firms like Kensium and DotcomWeavers, Digiteon is well-suited for companies seeking flexible offshore development partnerships without compromising on quality.

10. Chicago Web

Chicago Web is a small but focused ecommerce development company that has been helping businesses build and manage their online presence since 2008. With a strong emphasis on frontend and backend alignment, they help clients launch secure and functional ecommerce websites.

Core services:

• Custom ecommerce development and redesigns

• Frontend development and responsive layout creation

• Database architecture and product catalog setup

• Secure payment gateway integration (including PayPal)

• Ecommerce website maintenance and performance audits

Ideal for small businesses and startups that need a dependable local partner, Chicago Web is known for its attention to detail and competitive pricing.

Optimize Your Ecommerce Logistics with ClickPost for Faster Deliveries

While ecommerce development agencies focus on building your digital storefront, ClickPost empowers your post-purchase journey. As a logistics intelligence platform, ClickPost integrates with multiple ecommerce platforms to enhance efficiency and customer satisfaction through post-order operations.

Key ClickPost Features:

• Multi-Carrier Integration Platform: Seamlessly connects your e-commerce store with top logistics partners.

• Returns & Exchanges: Simplifies reverse logistics and enhances customer retention.

• Carrier Allocation: Automates shipment assignments based on delivery zone and performance.

• AI Tracking: Real-time shipment visibility across channels.

• AI Notifications: Proactive customer communication on delays, dispatches, and deliveries.

• Reporting & Analytics: Actionable insights into logistics efficiency and customer engagement.

ClickPost transforms delivery management into a strategic advantage. Want to improve post-order experiences and drive repeat purchases? Book your demo with ClickPost today.

The Chicago edge: Why these companies stand out

Every ecommerce website is the core of a business’s growth strategy. In Chicago, development companies are leveraging location, logistics infrastructure, and a skilled tech workforce to bring intelligent ecommerce ideas to life. From real-time inventory systems to integrated analytics dashboards, these firms deliver digital experiences that convert visitors into loyal customers.

What sets these Chicago-based developers apart is their agility and commitment to customization. They do not believe in one-size-fits-all solutions. Instead, they assess what factors into your business needs, select the right ecommerce platforms, and implement features that specialize in ensuring speed, scalability, and security. Whether you need Magento’s powerful product catalog management or Shopify’s intuitive design interface, these companies tailor every detail to your goals.

Together, they represent the best ecommerce talent in Chicago, which is a blend of creativity, strategy, and technical expertise. Their deep understanding of platform-specific functionality, customer behavior, and the nuances of online sales makes them valuable partners for any business ready to boost its ecommerce game.