200+ satisfied clients
Automate up to 50% of manual operations and keep your ecommerce data in perfect sync.
Talk to foundersGet free estimation in 24h
120+
successfully completed projects
95%
Satisfied clients
3+
Years average collaboration duration
20+
countries served
We connect your eCommerce platform with ERP, CRM, PIM, 3PL, payment services, and marketplaces, based on your actual business processes and your company's unique logic. We analyze the architecture and the full order journey - from checkout to fulfillment - so all platforms work as a single operational loop, not just exchange eCommerce data through a standalone connector.
We connect the key systems, platforms, and sales channels your commerce business relies on, so data moves without delays and every eCommerce process works in sync.
We connect your eCommerce platform with ERP and related services to exchange operational data:
We bring together data from your storefront, CRM, and CDP into a single customer profile:
We sync product data between PIM, your eCommerce platform, and sales channels via integration:
We connect payment services based on your markets, currencies, and commerce models:
We sync orders and warehouse operations across the storefront, warehouses, 3PL providers, and delivery services:
We bring your own store, marketplaces, and other channels together into a single commerce system:
We help your service team work faster, cut out unnecessary manual work, and grow eCommerce sales with confidence through systems and integrations that actually work together.
Challenge
Risk
Solution
The team manually transfers order data, prices, stock, and customer data between systems and services.
Errors or delays disrupt order processing and lead to lost sales.
We automate end-to-end eCommerce data flow through integration and cut manual operations by up to 50%.
The storefront, ERP, warehouse, and marketplaces show different prices and stock levels.
Customers buy items that are out of stock, and the business loses revenue and trust.
We define a single source of truth and keep accurate data across every platform.
The team finds out about a failure only after an order never made it to the warehouse or got stuck in processing.
Paid orders don't reach the warehouse, and support tickets pile up.
We set up monitoring, alerts, automatic retries, and failed-operation tracking.
Different vendors are responsible for the platform, ERP, payments, services, and logistics.
During a critical outage, teams spend hours figuring out where the failure is and whose responsibility it is.
We take end-to-end ownership of the entire eCommerce integration setup and how the systems and services interact.
Even a small change in the ERP or checkout affects multiple integrations.
Updating one system can break order or customer data flow in others.
We reduce dependencies between systems and integrations and check compatibility before rollout, lowering the risk of cascading eCommerce failures.
Adding a new marketplace, warehouse, or market requires separate custom work.
Launching a new channel takes longer, costs go up, and the business starts seeing sales later than planned.
We standardize ecommerce data exchange and build a modular integration platform, so new channels don't have to be connected from scratch.
From eCommerce to fintech, our clients span 20 countries and every project is different.
How we moved retail and trade to Shopify Plus on native B2B, no custom backend - B2C on schedule, trade portal a month later.
How we rebuilt the storefront, split the EU and US into separate stores, and set up Shopify Markets for Europe - without pausing orders.
How we rebuilt the store on Online Store 2.0, simplified checkout, and automated inventory and marketing with NestJS, Klaviyo and Zapier.
How we moved the widget to App Blocks and pre-built insurance variants - so merchants self-install and protection reaches the cart instantly.
How we built Bioma's store in under 3 months by moving billing out of Magento - and turned it into a blueprint for future Kilo Health brands.
How we moved Côte&Ciel's three Shopify storefronts out of the PageSpeed red zone without pausing sales.
How we built a breed-based quiz, calorie calculator and multi-discount cart on Web Components and Alpine.js - for a store where 87% of traffic is mobile.
How we rebuilt search, performance and analytics on a live Magento 2 store, cutting order processing time by 22% and lifting ROAS by 18%.
A new theme, rebuilt subscriptions and ClassWallet payments - with every customer, order and subscription carried over.
How we moved a hardcoded Dawn theme to Horizon and metaobjects - so the marketing team updates menus, banners and promotions on its own.
How we rebuilt the storefront on Hyvä, upgraded Magento to 2.4.7-p1, and rebuilt the prescription consultation engine - with zero downtime.
How we moved a legacy monolith to async Laravel queues so sellers manage Amazon orders right in Shopify.
How our six-person team builds market-specific checkout logic, maintains REST API integrations, and ships fixes without putting live sales at risk.
We built a free Shopify app that checks storefront pages, scores their SEO health, and turns findings into practical next steps.
We don't start with the API - we start with the actual eCommerce order journey. That's why our integrations account for edge cases, stay manageable when something breaks, and don't lock your commerce team into off-the-shelf connectors.
We don't start with the API - we start with the actual eCommerce order journey. That's why our integrations account for edge cases, stay manageable when something breaks, and don't lock your commerce team into off-the-shelf connectors.
Business Logic First
The full order journey gets analyzed, including B2B pricing, returns, and non-standard integration scenarios that off-the-shelf connectors often miss.
One Flow Owner
Ownership of the entire integration setup, from checkout to fulfillment, sits with one team, coordinating dependencies across platforms, ERP, payments, services, and 3PL.
No Black Boxes
Clients get documented architecture, data mappings, and API specs, so the eCommerce integration doesn't depend on any single developer or service provider.
Ready for Reality
Both standard and edge-case scenarios get tested - delays, API failures, peak loads - so eСommerce integrations and platforms hold up under real conditions.
A step-by-step integration path from auditing current systems and processes to a controlled launch, monitoring, and ongoing support.
The order journey gets mapped from checkout to fulfillment, along with systems, business rules, edge cases, and current manual operations.
We identify what data moves between systems and which platform is the source of truth for each data type.
APIs, webhooks, middleware, or an event-driven approach get chosen, with integration logic, service dependencies, and recovery scenarios documented.
Connectors get built, data mapping gets configured, and integration operations between systems get automated.
End-to-end and negative scenarios get checked - duplicates, delays, API downtime, rate limits - along with how integrations behave as operation volume grows.
Monitoring, dashboards, and alerts get set up before launch, then ecommerce integrations get enabled step by step with data exchange verified along the way.
We use a tech stack that allows projects to be launched quickly and adapted to the specific needs of a company’s operations.
Figma
Adobe Photoshop
Adobe XD
PHP
Laravel
Symfony
Java
Spring
Nest.js
Express.js
React
Next.js
Angular
Vue
Nuxt
Headless Commerce Architecture
Shopify Plus
Adobe Commerce (+Cloud)
WordPress
WooCommerceWe build custom eCommerce applications for online stores, digital brands, and SaaS platforms — helping automate operations, connect business systems, and support scalable growth.
netparcel
sigma
a&g
pineapple
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heyholy
webloft
lgfgDiscover how our solutions help overcome technical barriers, maintain system reliability, and implement innovations that drive sales growth.
4.9
Overall Review Rating
Co-Founder at HEY HOLY, an eCommerce pet brand
Three Years of Reliable Delivery
Stellar has supported our Shopify store for three years, building backend functionality and custom tools. They’re fast, responsive, and reliable.
Creative Director at Long Story Short
Built on Clarity and Speed
Stellar impressed us with clear, fast communication and a well-structured process, especially when deadlines were tight and quick decisions were critical.
CEO, LGFG Fashion House
Stellar transformed our sales processes, streamlining operations and automating manual work to save significant time and improve the overall customer experience.
Owner at NILG.AI
Stellar stood out among five shortlisted companies with a detailed, transparent plan and pricing strategy. Jack also provided clear guidance and valuable insights.
Shopify & eCommerce Expert, Owner at Digitalebox.de
Stellar’s Shopify expertise and ability to deliver advanced custom solutions reflect strong technical skills and a focus on scalable, high-quality eCommerce.
Director of Marketing at Cooper Mountain Technologies
They bring a positive attitude and use their expertise to improve projects beyond the brief, considering key factors like SEO, responsiveness, and overall quality.
Co-owner, Marketing Nice Guys
They consistently deliver on time and within budget, follow through on commitments, and stay proactive with communication - even when clients are slow to respond.
Ready to scale your eCommerce platform and services without piling up technical debt?
Fill out the form and tell us your platform - we'll match the services and integration approach to your project's scale and complexity.
Vladimir Gubarev
COO and Co-founder
Jack Ananchenko
CEO and Co-founder
From eCommerce to fintech, our clients span 20 countries and every project is different.
How we moved retail and trade to Shopify Plus on native B2B, no custom backend - B2C on schedule, trade portal a month later.
How we rebuilt the storefront, split the EU and US into separate stores, and set up Shopify Markets for Europe - without pausing orders.
How we rebuilt the store on Online Store 2.0, simplified checkout, and automated inventory and marketing with NestJS, Klaviyo and Zapier.
How we moved the widget to App Blocks and pre-built insurance variants - so merchants self-install and protection reaches the cart instantly.
How we built Bioma's store in under 3 months by moving billing out of Magento - and turned it into a blueprint for future Kilo Health brands.
How we moved Côte&Ciel's three Shopify storefronts out of the PageSpeed red zone without pausing sales.
How we built a breed-based quiz, calorie calculator and multi-discount cart on Web Components and Alpine.js - for a store where 87% of traffic is mobile.
How we rebuilt search, performance and analytics on a live Magento 2 store, cutting order processing time by 22% and lifting ROAS by 18%.
A new theme, rebuilt subscriptions and ClassWallet payments - with every customer, order and subscription carried over.
How we moved a hardcoded Dawn theme to Horizon and metaobjects - so the marketing team updates menus, banners and promotions on its own.
How we rebuilt the storefront on Hyvä, upgraded Magento to 2.4.7-p1, and rebuilt the prescription consultation engine - with zero downtime.
How we moved a legacy monolith to async Laravel queues so sellers manage Amazon orders right in Shopify.
How our six-person team builds market-specific checkout logic, maintains REST API integrations, and ships fixes without putting live sales at risk.
We built a free Shopify app that checks storefront pages, scores their SEO health, and turns findings into practical next steps.
