Most eCommerce problems are backend problems wearing a frontend disguise. Slow checkouts, broken ERP syncs, pricing logic that fails under load. Our Adobe Commerce Certified backend developers fix these at the architecture level, not with patches.
Generic backend developers write code that works. eCommerce backend developers write code that holds up under load, after upgrades, and when your ERP changes. That is the difference our certified team brings to every project.
Get In TouchWe build Magento's service contract layer and plugin system. Your extensions stay conflict-free after every version update.
SAP, Sage, Dynamics, and custom internal tools. We know where the data sync edge cases sit before they surface in production.
Every module is documented. Another developer can pick up our code without a three-hour briefing. No proprietary lock-in.
You get milestones in writing, a fixed timeline, and a defined cost. No scope creep billed as change requests after the fact.
The backend is where an eCommerce store either holds together or quietly falls apart. It handles order processing, pricing logic, inventory validation, payment security, and every connection your store makes to an external system. A polished frontend cannot compensate for a backend that breaks under real trading conditions.
Our backend developers work exclusively on eCommerce platforms. That means they understand Magento's module architecture from the ground up, know where Shopify's API rate limits create problems, and have built custom integrations between stores and ERP systems that were never designed to talk to each other.
With 250+ projects completed and 100+ stores on active retainers, this is not general web development applied to an eCommerce context. It is eCommerce backend work done by people who have seen what goes wrong at scale and know how to build things that do not.
8+ Experience Years
Builds to Magento's event-observer and plugin architecture, not around it. Handles custom module development, complex attribute structures, and backend issues that workarounds cannot fix. Stores stay upgradeable, and extensions stay conflict-free.
10+ Experience Years
For Adobe Commerce Cloud and On-Premises stores requiring enterprise-level backend work. Covers multi-store configuration, B2B module customisation, GraphQL API development, and performance tuning at a scale Magento Open Source does not demand.
5+ Experience Years
Builds the custom logic Shopify does not support out of the box. Storefront API, Admin API, Shopify Functions, and webhooks are used to build pricing rules, fulfilment workflows, and backend automations that sit cleanly within Shopify's architecture.
7+ Experience Years
Connects eCommerce platforms to ERP, CRM, WMS, and PIM systems. Every integration is designed with proper error handling from the start so failures surface visibly rather than silently corrupting order data or stock levels in the background.
6+ Experience Years
Deep PHP across object-oriented design, Composer, REST and GraphQL APIs, database query optimisation, and caching. Works across Magento, custom PHP applications, and hybrid architectures where store logic falls outside what any single platform provides.
12+ Experience Years
Reviews your current backend, identifies structural problems, and designs an architecture that supports growth without accumulating technical debt. Defines the build approach, then leads the development team to deliver it. Right for enterprise projects that need planning before code.
SERVICES INCLUDED
Purpose-built Magento and Shopify backend logic written to platform standards. No copy-paste extensions. Nothing that breaks on the next update.
Tested connections to SAP, Sage, Microsoft Dynamics, Salesforce, and custom tools. Built with error handling from the start, not added as an afterthought.
PCI-compliant connections for PayPal, Stripe, Mollie, Klarna, and custom gateway configurations. Tested against your checkout flow before going live.
REST and GraphQL APIs built to your spec and documented properly, and used for headless builds, mobile apps, and third-party system connections.
Database query analysis, caching strategy, and bottleneck diagnosis for stores slowing under real traffic. Fixed at the source, not masked with a CDN layer.
Backend hardening, security patches, PCI compliance support, and audits for stores that process payment data and cannot afford an unpatched codebase.
There are plenty of backend developers available. What is harder to find is a backend developer who knows eCommerce architecture at the platform level and works inside a team with QA, senior oversight, and post-launch accountability built in.
Our Magento developers follow Adobe's event-observer pattern and service contract layer. Your extensions stay conflict-free, your store stays upgradeable, and problems do not pile up with every platform release.
Our founder holds Magento Master status, awarded by Adobe to fewer than 60 developers globally. That standard sits behind every backend project we take on and shapes how our developers approach architecture, code quality, and platform best practices.
The developer on your project is part of our permanent team. Not a contractor sourced for the job. You get consistent expertise with full team support QA, senior oversight, and continuity beyond the initial build.
If you are a digital agency bringing us in as a backend resource, we operate fully under your brand. No KiwiCommerce references in code, commits, documentation, or any deliverables. Your clients see your quality standard. We write the backend.
We agree on what is being built, the delivery stages, and the cost before development begins. Milestones are in writing. Changes outside the agreed scope are flagged before they affect the budget or the timeline.
We currently maintain 100+ live stores on retainer. Backend work does not stop at launch platform updates, integrations need monitoring, and new business requirements create new backend tasks. Continuity is available from the team that built it.
KIWI Commerce redeveloped my entire website, exactly to my requirements. They worked exactly along with my timeframe and were fantastic to work with. I would highly recommend this company. Thank you Sam and the team!
Great response to tickets. We feel our website is in safe hands with Kiwi. Any issues are fixed very quickly. Great value for money. We have been working with Kiwi for a couple of years now and find them very helpful and easy to get along with. Would highly recommend.
Working with Kiwi Commerce has been a very smooth experience. Their team is responsive, knowledgeable, and always willing to go the extra mile. From development to ongoing support, everything is handled efficiently and with great attention to detail. Highly recommended.
We’ve been working with Kiwi Commerce for ongoing website improvements and support, and the experience has been consistently positive. They are proactive, easy to work with, and quick to respond whenever we need assistance. Great team and great service.
Your questions answered.
Cannot find what you are looking for? Contact our team.
A backend developer builds the server-side logic your store depends on, including order processing, pricing rules, inventory, customer authentication, and third-party connections. Everything a customer never sees but relies on completely every time they place an order.
General backend developers write good code but rarely understand Magento’s plugin system, Shopify’s API constraints, or PCI-compliant payment requirements. Our developers work exclusively on eCommerce. That knowledge is there from the start, not learned on your project.
Yes, it is one of our most common types of work. We have built live connections to SAP, Sage, Dynamics, Salesforce, HubSpot, and custom internal tools. Every integration is tested, documented, and built with proper error handling so failures surface visibly rather than corrupting data quietly.
Yes. We take on projects regularly where the original team is no longer available or where a store has accumulated backend problems. We do a thorough code review before starting, agree on what needs fixing or rebuilding, and share our findings with you honestly before any work begins.
It depends on the scope. A focused custom module build typically takes two to six weeks. An ERP integration, depending on the complexity of the systems involved, can take four weeks to several months. We give you a fixed timeline with defined stages before development begins.
Magento and Adobe Commerce backend development is a core specialism. Our developers hold official Adobe Commerce certifications, and our founder holds Magento Master status, one of fewer than 60 globally. We work across both Magento Open Source and Adobe Commerce Cloud.
Yes. We work on fixed-scope projects of any size, from a single custom module build to a multi-month integration programme. If you have a specific piece of backend work that needs doing, tell us what it is, and we will come back with an honest assessment and a clear proposal.
We offer retainer-based support across all platforms. This covers monitoring, updates, ongoing development work, and issue resolution. We currently maintain 100+ live stores in this way. You are not left managing a complex backend alone once the project is delivered.
Our UK-based certified backend team is ready to look at your project. Get in touch today, and we will come back within one business day with a clear assessment and an honest proposal.
Get In Touch