Most eCommerce problems that look like frontend problems are actually backend problems. Slow checkout. Orders are not syncing to the ERP. Custom pricing logic that breaks under load. When you hire backend developers from KiwiCommerce, you get certified specialists who understand eCommerce architecture at the level it takes to solve those problems properly. Not patched. Solved.
Backend development needs vary considerably. Some businesses need a dedicated backend developer to build custom modules from scratch. Others need an experienced specialist to untangle an integration that has been failing silently for months. We work across both and everything in between.
Get In TouchYour store is trading well, but the backend is starting to show its limits. Products are not syncing correctly, custom logic is getting harder to maintain, or performance is degrading under higher order volumes. Our backend developers find the root cause and fix it at the architecture level.
You have a client project that needs a certified backend resource delivered under your brand. We work as your white-label development partner. Your clients see your name and your quality standards. We write the code.
Connecting Magento or Shopify to an ERP, a CRM, a warehouse management system, or a bespoke internal tool is not simple work. Our integration specialists have handled these connections across dozens of industries and know where the edge cases sit before they surface.
Tiered pricing, quote request workflows, account-based ordering, and complex catalogue rules. B2B eCommerce backend work is a different discipline from B2C. Our senior backend developers have delivered it at scale and understand what enterprise systems actually require.
The backend of an eCommerce store is where the real complexity lives. It is the layer that processes orders, applies pricing rules, validates inventory in real time, talks to your ERP, authenticates your customers, and keeps sensitive payment data secure. A frontend can look perfect and still lose sales because the backend beneath it is poorly built or poorly integrated.
Our backend developers work exclusively on eCommerce platforms. They know Magento's module architecture from the ground up. They know where Shopify's API rate limits bite and how to work around them cleanly. They have built custom extensions for stores processing thousands of orders a day and integrated systems that were never designed to talk to each other. That depth of experience is what you get when you hire from us.
Here is what our backend developers handle:
5+ Experience Years
Specialists in Magento's PHP-based module architecture, service contracts, plugin system, and event-observer pattern. These developers build custom extensions, handle complex admin configurations, manage product attribute structures, and resolve backend issues at the architecture level rather than with workarounds. Ideal for businesses running Magento 2 or Adobe Commerce who need work done properly, not quickly patched.
7+ Experience Years
For stores on Adobe Commerce Cloud or Adobe Commerce On-Premises who need enterprise- level backend expertise. These developers handle multi-store configurations, B2B module customisation, GraphQL API development, cloud deployment pipelines, and complex performance tuning at scale. They understand Adobe Commerce's extended feature set beyond what Magento Open Source offers and work at the senior architecture level.
3+ Experience Years
Shopify's backend is not open in the same way Magento's is, but building the right custom logic on Shopify still requires real expertise. Our Shopify backend developers work with the Storefront API, Admin API, webhooks, and Shopify Functions to build custom pricing logic, fulfilment workflows, and backend automations that the platform does not support out of the box.
5+ Experience Years
Connecting your store to external systems is one of the highest-risk backend activities there is. Done badly, it corrupts data, loses orders, or creates sync loops that take weeks to unwind. Our integration specialists design and build clean, tested connections between eCommerce platforms and ERP, CRM, WMS, PIM, and third-party services. Every integration is documented and built with error handling from the start.
5+ Experience Years
Deep PHP expertise covering object-oriented design, Composer, REST APIs, GraphQL, database query optimisation, and caching strategies. These developers work across Magento, custom PHP applications, and hybrid architectures where store logic extends beyond what a single platform provides natively.
7+ Experience Years
For enterprise projects that need proper technical planning before a line of code is written. Our solution architects review your current backend, identify structural problems, and design an architecture that supports your growth targets without accumulating technical debt. They define the approach, then lead the development team to deliver it correctly.
Our Magento and Adobe Commerce backend developers hold official Adobe certifications. That means they know the platform's architecture the way Adobe intends it to be used, not the way years of accumulated workarounds have shaped it. When your store is built or maintained to that standard, problems become less frequent and easier to resolve.
Every developer on your project is based in the UK. When an integration fails at 9 am on a Tuesday, someone is available to look at it. There are no overnight handoffs, no 5-hour time zone gaps, and no communication delays between what you ask for and what gets built.
Our founder holds Magento Master status, awarded by Adobe to fewer than 60 developers globally. That standard of expertise sits behind every backend project we take on. It shapes how our developers approach architecture decisions, code quality, and platform best practices across the team.
We do not patch existing code and call it custom development. Every module, extension, and integration we build is written to platform standards, documented clearly, and structured so that another developer can understand it without a three-hour briefing. Your codebase stays clean.
Your business logic, your client relationships, and your store architecture are yours. We sign non-disclosure agreements as standard. If you are an agency using us as your backend partner, we remain entirely invisible. No KiwiCommerce references in code, commits, or any deliverables.
Backend projects go wrong when the scope is vague. We agree on what is being built, how long it will take, and what it will cost before work begins. You get milestones in writing and progress updates against them. No scope creep disguised as change requests without your prior agreement.
The process from first contact to the developer starting work is straightforward. No extended scoping phases before you know what you are dealing with, and no surprises once work begins.
Tell us what you need built or fixed. Platform, scope, and the problem you are trying to solve. We ask direct questions and come back within one business day with a clear assessment and a proposal. You will know who is available, what the realistic timeline looks like, and what it will cost.
Based on your platform, complexity, and requirements, we identify the best-suited certified developer from our team. You find out who that person is before work begins. If you want to speak to them ahead of starting, we can arrange that. There is no anonymous resource allocation.
We do not begin backend development on a vague brief. The scope is defined clearly, the delivery stages are set out, and the timeline is fixed before the first line of code is written. This protects both sides and keeps the project on track.
Work begins, and updates come against the agreed milestones. You are not waiting for a monthly report to find out where things stand. Feedback is acted on quickly, and changes within the agreed scope are handled without making them feel like a contractual issue.
Backend work rarely ends at launch. Platform updates need to be applied. Integrations need monitoring. New business requirements create new backend tasks. We offer retainer-based support for all platforms and currently maintain over 100 live stores in that capacity. You have continuity rather than starting the search again every time something needs attention.
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 and maintains the server-side logic that makes an eCommerce store work. This includes the code that processes orders, applies pricing rules, manages inventory, handles customer authentication, runs integrations with third-party systems, and keeps data moving correctly between your store and your other business software. Everything a customer never sees directly but relies on entirely every time they place an order.
A frontend developer builds what customers see and interact with: page layouts, navigation, product display, and checkout flow in the browser. A backend developer builds the systems underneath: the logic, the data, the APIs, and the connections. On complex eCommerce stores, these roles are distinct. Getting the backend right is what allows the frontend to work reliably under real conditions.
A general backend developer may be skilled in web application logic but will not naturally understand Magento’s module architecture, Shopify’s API rate limits, eCommerce database query patterns under load, or the specific requirements of PCI-compliant payment handling. Our backend developers work exclusively on eCommerce platforms and bring that depth of knowledge to every project from day one.
Yes, and this is one of our most common types of work. We have built integrations between Magento and Adobe Commerce stores and systems, including SAP, Sage, Microsoft Dynamics, Salesforce, HubSpot, and a range of bespoke internal tools. Every integration we build is tested thoroughly, documented clearly, and built with proper error handling so that failures surface visibly rather than silently corrupting data.
Yes. We regularly take on projects where the original development team is no longer available or where a store has accumulated backend problems that need resolving. Before starting any work on an existing codebase, our developer conducts a thorough review, identifies existing issues, and agrees on the scope with you clearly. We do not make assumptions about what we are inheriting.
Yes. Magento and Adobe Commerce backend development is one of our core specialisms. Our developers hold official Adobe Commerce certifications, and our founder holds Magento Master status, which is recognised by Adobe as one of the highest levels of expertise in the platform globally. We work on both Magento Open Source and Adobe Commerce Cloud.
This depends entirely on the scope. A focused custom module build for Magento typically takes two to six weeks. An ERP integration project, depending on the complexity of the system and data structures involved, can take anywhere from four weeks to several months. We give you a fixed timeline with defined stages before work begins so you always know what to expect and when.
We offer retainer-based support for all platforms we work on. This covers monitoring, updates, ongoing development, and issue resolution. Currently, we support over 100 live stores on retainers. 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