A 25+ year ecommerce agency.
We've built ecommerce stores for over 25 years, from the dot-com era to AI-driven commerce. Today we specialize in Shopify Plus development, B2B portals, and enterprise replatforming for mid-market and enterprise brands.
Years in Business
Stores Launched
Platform Migrations
GMV Powered
From downtown Manhattan to a remote-first agency.
ECommerce Partners was founded in 1998 in a downtown Manhattan office, building online stores when ecommerce was still a niche. For nearly two decades we ran out of New York's tech corridor, growing alongside the platforms we worked on: Magento, BigCommerce, and Shopify.
When COVID changed how teams work, we made a deliberate call: go fully remote, hire the best people regardless of geography, and put the agency’s headquarters in Tenafly, New Jersey, 15 minutes from where we started. Today our developers, project managers, and designers span the U.S. and Europe, with clients across North America.
Two things have stayed constant across 25+ years. First, we specialize in both building and consulting. We ship the code, run the migrations, and launch the stores, and we guide our clients to the solutions that actually make sense for their business, not what’s trendy or what other agencies are pushing. Second, we’ve focused on mid-market and enterprise brands: the businesses where ecommerce is the operation, not a side channel.
The people behind the work.
Ezra Adler
Managing Director
Project Management Wizard
Maksym Kalamarz
Head Developer
Shopify Guru
Magdalena Jasinska
Product Manager
Design Maestro
Four principles that shape every engagement.
We build and consult.
We ship the code, and we guide our clients to the best solutions for their business. Both sides of the equation, not one or the other.
Senior people on every project.
No bait-and-switch. The lead developer who scopes your build is the one who ships it.
Long-term relationships.
Most of our enterprise clients have been with us for 5+ years. We’re built for the long haul, not one-and-done launches.
Focused on mid-market and enterprise.
Brands doing $3M+ in revenue where ecommerce is the operation, not a side project.
Vetted by the platforms we build on.
Shopify Partner
Certified across Shopify Development Fundamentals, Liquid Storefronts, and B2B on Shopify.
BigCommerce BigDev Certified
Recognized BigCommerce development partner. We work on BigCommerce as well as Shopify Plus.
Multiple Shopify Dev Certifications
Theme architecture, checkout extensibility, app development, and platform fundamentals across the team.
From luxury beauty to B2B agriculture.
Luxury Beauty · Shopify Plus
Chantecaille
International ecommerce platform for a luxury skincare brand. Multi-region storefronts with localized pricing.
B2B · Magento to Shopify Plus
QC Supply
Full Magento replatform to Shopify Plus with custom B2B buyer portal, ERP integration, and 50K+ SKUs.
Fintech · BigCommerce Enterprise
PayJoy
Smartphone financing platform on BigCommerce Enterprise, with custom checkout flows and payment integration.
Food & Beverage · BigCommerce
KOL Foods
Specialty food brand on BigCommerce with custom shipping logic for perishables and ERP integration.
Questions people ask about us.
What does ECommerce Partners do?
ECommerce Partners is an ecommerce development agency specializing in Shopify Plus builds, B2B and wholesale commerce, platform migrations, custom apps and API work, and ERP integrations. We work with mid-market and enterprise brands whose commerce operations are genuinely complex, rather than with first-time store launches.
How long has ECommerce Partners been in business?
Since 1998. That means the team has carried brands across several generations of ecommerce platforms rather than one, which is most of why migration and replatforming work is a core part of what we do.
What platforms does ECommerce Partners build on?
Primarily Shopify Plus, where most of our work sits. We are also a BigCommerce BigDev Certified Partner and build on BigCommerce Enterprise, now sold as BigCommerce Performance. We recommend the platform that fits the requirements rather than the one we sell more of, and we will say so when the answer is the platform we do less business on.
What size businesses does ECommerce Partners work with?
Typically mid-market and enterprise brands from around $3M in annual revenue upward, especially those running B2B or wholesale alongside direct-to-consumer, managing large or technical catalogs, or connecting commerce to an ERP. We are not the right fit for a low-cost first store or a template setup.
Is ECommerce Partners a certified Shopify partner?
Yes. We are a certified Shopify Plus Partner, and the team holds verified Shopify certifications in Development Fundamentals, Liquid Storefronts for Theme Developers, and B2B on Shopify Launch and Customization. We are separately a BigCommerce BigDev Certified Partner.
Which brands has ECommerce Partners worked with?
Published case studies include Chantecaille, a luxury skincare brand running five international Shopify Plus storefronts; QC Supply, a Magento to Shopify Plus migration of a 50,000+ SKU B2B catalog with a custom buyer portal and ERP integration; PayJoy, a replatform to BigCommerce Enterprise with a custom financing checkout; and KOL Foods, an AS400 ERP integration handling variable-weight products.
Where is ECommerce Partners located?
Our headquarters is at 4 Washington St, Tenafly, New Jersey, and we work with brands across the United States. We began in downtown Manhattan and operate remote-first today.
Let’s talk about what you’re building.
Whether it’s a Shopify Plus build, a migration off Magento, a custom B2B portal, or an ERP integration, we’ve probably done it before. Start with a no-pressure conversation about what you need.