Shopify engineering for brands with complex requirements
We architect, build and integrate high-performance Shopify and Shopify Plus solutions: custom storefronts, migrations, ERP and marketplace integrations, B2B and custom apps.
End-to-end Shopify services, from architecture to launch
Every engagement is led by senior engineers. Pick a service to see what's included, or tell us about your project and we'll recommend the right approach.
Get your products found, recommended and bought in ChatGPT, Perplexity, Gemini, Copilot and the Shop app, with content, data and agentic commerce built for AI.
Marketplaces, ERP-driven catalogs, B2B pricing, multi-region operations. We design the architecture first, then build solutions that stay reliable as you scale.
Marketplaces & multi-vendor
Vendor onboarding, order routing, split fulfilment, commissions and per-vendor shipping on Shopify.
ERP, PIM & middleware
Real-time sync of products, prices, stock and orders with monitoring, retries and clear documentation.
B2B & wholesale
Company accounts, catalogs, price lists, payment terms and approval workflows alongside DTC.
International & multi-store
Markets, multi-currency pricing, duty-inclusive landed costs and cross-border shipping logic.
system.architectureall systems synced
ERPorders · stock · prices
sync
Shopify PlusMarkets · B2B · Functions
Vendorsmulti-vendor catalog
route
Order routersplit · ship · settle
StorefrontOS 2.0 / Hydrogen
serve
3PL / WMSfulfilment webhooks
Real-timeinventory sync
API-firstGraphQL & webhooks
Monitoredretries & alerts
10+Years on ShopifyHands-on engineering across Shopify and Shopify Plus.
PlusShopify Plus expertiseFunctions, Checkout Extensibility, B2B and Markets.
40+Widgets in our own appWe build and run Kolo on the Shopify App Store.
EULisbon-basedWorking with brands across Europe and the US.
Client results
Brands that trust our work
We worked with Ecom Novo on designing our Shopify architecture and integrating Shopify Plus with our custom ERP. The team demonstrated excellent technical knowledge and a deep understanding of both Shopify and complex eCommerce systems.
What impressed us most was their approach to data architecture. They helped us establish the correct data structure and mapping between our ERP and Shopify, ensuring products, inventory, pricing, customers, and orders were synchronised properly.
Ecom Novo understands how to approach complex technical challenges and build scalable solutions rather than relying on unnecessary workarounds. A highly knowledgeable and professional team that we would confidently recommend.
Solutions architectureERP integrationShopify Plus
A
AndersenMulti-channel retailer · UK
Ecom Novo helped us turn our existing Shopify store into a multi-vendor marketplace. They designed and built custom middleware connecting Shopify with our vendors' systems, covering vendor management, automated payouts, shipping coordination and invoice generation.
The most challenging part was complex product bundles spanning multiple vendors, inventory sources and fulfilment workflows. The team connected all these processes into one coherent system. Highly recommended for businesses with advanced Shopify requirements.
MarketplaceCustom middlewareVendor payouts
N
Northstar Retail Group LtdMulti-vendor marketplace
Our store was struggling with low conversions. Ihor and his team ran an in-depth analysis with A/B tests and expert insights, uncovered usability issues we'd missed and implemented all changes directly in the code. Since then our conversion rate has climbed, AOV is up and bounce rates have dropped.
A meticulous, data-driven approach that uncovered subtle but critical friction points. They implemented every change seamlessly, respecting the visual and tonal integrity of our store. We've seen a clear lift in conversions and average order value.
Thorough, responsive and clearly knew what they were doing. They didn't stop at recommendations, they implemented everything directly in the code. Engagement is up and sales are stronger than ever.
They took a close look at how people used the site, explained everything clearly and handled all the updates for us. Since the changes we've seen better engagement and more quote requests.
What impressed us most was how smoothly they handled everything, including implementing changes directly in our Shopify theme. The site feels more intuitive and conversions and time on site are up.
Fixed scopes, transparent communication and working software every step of the way.
Discovery
We map your business rules, systems and goals, then audit your current store and tech stack.
Workshop + audit
Architecture
A clear technical plan: what's native, what's an app, what's custom, and how it all connects.
Blueprint + fixed scope
Build & integrate
Senior engineers ship in short iterations on a staging store, with regular demos and reviews.
Weekly demos
Launch & grow
A controlled go-live, monitoring and ongoing support, optimization and new features.
Support & retainers
Built by us
Kolo: Bundles & Upsells
We don't just build apps for clients. We designed and engineered Kolo from scratch for the Shopify App Store: 40+ ready-made bundle and upsell widgets, flexible bundling logic and optimized discount processing that help merchants grow average order value.
Every project is scoped individually, so we don't publish fixed prices. After a free consultation we send a clear proposal with scope, timeline and estimate, so you know exactly what you're getting before any work starts.
Do you work with Shopify Plus?
Yes. Most of our work involves Shopify Plus features such as Shopify Functions, Checkout Extensibility, B2B, Markets and multi-store setups. We also work with brands on Basic, Shopify and Advanced plans.
How long does a migration to Shopify take?
It depends on catalog size, integrations and custom functionality. Simpler migrations can take a few weeks; complex projects with ERP integrations and custom logic take longer. We'll give you a realistic timeline after the migration audit.
Can you integrate Shopify with our ERP or other systems?
Yes. We build API-driven integrations with ERP, CRM, PIM, WMS, 3PL and accounting systems, using existing connectors where they're reliable and custom middleware where they're not.
Can you work with our in-house team or another agency?
Absolutely. We regularly act as the Shopify architecture and engineering partner for in-house teams and agencies, from code reviews to owning complex parts of the build.
Do you offer ongoing support?
Yes. After launch we offer flexible support and development retainers covering maintenance, API upgrades, new features and optimization.
Let's talk
Have a complex Shopify project? Let's build it right.
Tell us what you're working on. You'll get a senior engineer's view on the best approach, usually within one business day.