FNO Services Europe
Magento Developers UK: Development and Support Services
Practical Magento expertise for established ecommerce businesses
Keep your Magento store dependable, maintainable and ready to support day-to-day trading with direct help from an experienced ecommerce developer.
FNO Services Europe provides remote Magento development and support services for UK businesses that need technical capability without employing a full-time developer or committing to a large agency retainer.
We can investigate existing stores, maintain custom code, troubleshoot checkout and catalogue problems, plan upgrades, improve integrations and deliver proportionate development around real operational requirements.
You communicate directly with a developer who can examine the wider system—including hosting, extensions, databases, APIs and business workflows—before recommending changes.
Magento development and support services
Magento stores can vary greatly. A relatively standard shop may need dependable maintenance, while an established operation may include bespoke modules, multiple storefronts, large catalogues, marketplace feeds and connections to warehouse or accounting systems.
Magento development
Careful changes to storefront behaviour, administration workflows, business rules and custom functionality after reviewing the existing architecture.
Theme and frontend work
Layout corrections, templates, responsive behaviour, JavaScript, CSS and customer-journey improvements within the store’s current theme approach.
Extension troubleshooting
Investigating compatibility problems, configuration faults, conflicting observers or plugins, failed setup changes and unwanted extension behaviour.
Checkout and order support
Technical investigation of carts, checkout steps, payment integrations, shipping methods, tax behaviour, order processing and transactional emails.
Catalogue and data work
Products, categories, attributes, imports, exports, indexing, scheduled processes and structured catalogue changes for established stores.
APIs and ecommerce integrations
Product feeds, inventory systems, marketplaces, fulfilment services, reporting tools, webhooks and other supported business-system connections.
Magento developers for UK businesses
Our Magento developers work remotely from Portugal with UK and international businesses. This provides UK companies with direct access to practical development and support while all quotations and invoices remain in EUR.
Remote delivery works particularly well when the objective is clear and the right access is available. We can collaborate with a business owner, internal technical contact, designer, marketing team or existing agency according to the project.
Support can be arranged for a defined fault, a planned development project or ongoing technical work. We first establish the store edition and version, hosting arrangement, deployment process, custom modules, integrations and immediate business priorities.
We do not need to replace the current platform simply because parts of it require attention. When the existing store remains commercially valuable, staged maintenance and improvement may be more sensible than an unnecessary rebuild.
Support for an existing or inherited Magento store
Many support relationships begin after the original developer, employee or agency is no longer available. An inherited Magento store should be understood before major changes are made.
We can review available source code, hosting, deployment access, Composer dependencies, extensions, cron jobs, queues, integrations and known operational problems. The aim is to separate urgent trading risks from routine maintenance and longer-term technical debt.
Where documentation is incomplete, we record important findings as work progresses. We also identify access or ownership gaps that could prevent safe maintenance, recovery or future migration.
If control of the domain, hosting, source code, backups or business accounts is uncertain, begin with our Website Takeover Check.
Common Magento problems we investigate
The checkout stops completing orders
Payment modules, JavaScript errors, shipping rules, sessions, third-party services or custom checkout changes can interrupt the purchase journey.
An upgrade exposes compatibility problems
Custom modules, themes, PHP versions and extensions may require review before the store can move safely to a supported release.
Products or categories do not update correctly
Imports, attributes, indexers, cache layers, scheduled jobs and external feeds can cause incomplete or delayed catalogue changes.
The administration area becomes unreliable
Permissions, grids, extensions, database growth, background jobs or custom code may affect everyday management tasks.
The storefront becomes slow
Hosting resources, database queries, indexing, cache configuration, media, theme code and external services can all contribute.
Stock or order data stops synchronising
API credentials, queues, scheduled tasks, webhooks and remote systems may fail or process only part of the expected data.
Emails or scheduled tasks stop running
Cron configuration, consumers, queues, mail delivery and server-level failures can interrupt processes that are not immediately visible.
The previous developer is unavailable
We can establish the current technical position, document dependencies and create a safer route for continued support.
Magento maintenance services and security updates
Magento maintenance requires more than occasional content changes. The application, PHP environment, Composer packages, extensions, theme, database, search service, cache layers and background processes must continue to work together.
A proportionate maintenance arrangement may include reviewing available security and quality updates, checking extension compatibility, confirming backup and recovery arrangements, monitoring visible errors and testing important store journeys after consequential changes.
Updates should be planned around the store’s actual risk. A release may affect custom modules, payment methods, search, checkout or integrations, so staging and rollback arrangements should reflect the complexity and commercial importance of the system.
Magento 2 upgrades and technical modernisation
An older Magento installation may depend on outdated PHP versions, abandoned extensions, unsupported custom code or infrastructure that is difficult to reproduce. Moving forward safely begins with an inventory of those dependencies.
We can assess the current version, Composer configuration, modules, theme, database, search requirements, hosting and deployment process. The resulting work can then be separated into essential compatibility changes, security-related tasks and optional improvements.
For complex stores, an upgrade may need several controlled stages rather than one large change. A suitable test environment, representative data, key customer journeys and integration checks help expose problems before production deployment.
If the project involves moving the complete store to different infrastructure or another platform, see our website migration services.
Custom Magento ecommerce development
Custom development should solve a defined commercial or operational problem. Before changing code, we clarify the required behaviour, users affected, data involved and how the result will be tested.
Depending on the store, development may involve a focused module, an extension to existing functionality, an administrative workflow, a catalogue process, checkout logic or an integration with another business system.
Where a maintained extension or configuration change can meet the requirement reliably, that may be more economical than bespoke code. Where custom development is justified, ownership, dependencies and future maintenance should remain clear.
We review inherited code before promising to extend it. Existing modules can contain undocumented assumptions, obsolete APIs or tightly coupled behaviour that affects the safest technical approach.
Magento performance and reliability
A slow store can have several causes. Hosting limits, PHP workers, database queries, indexers, caches, search services, media, frontend code, extensions and external APIs can each affect customer and administrator experience.
Performance work begins with evidence rather than a promise of an arbitrary score. We review the reported symptoms, application and server information available to us, browser behaviour and the timing of important requests.
Improvements may include correcting configuration, reducing avoidable work, addressing failing processes, reviewing custom code, improving media handling or working with the hosting provider where infrastructure changes are justified.
The objective is dependable commercial performance. A laboratory score is useful evidence, but it should not be improved by removing business-critical features without understanding their value.
Magento integrations and automation
Established Magento stores often sit at the centre of a wider operational system. Product information may come from suppliers, stock may be shared across sales channels and orders may pass to fulfilment, accounting or customer-management software.
We can build or troubleshoot appropriate connections using supported APIs, webhooks, files, feeds, queues and scheduled processes. Typical work includes catalogue imports, inventory updates, marketplace data, order exports and operational reporting.
Reliable integration work considers validation, duplicate prevention, error logging, retries, rate limits and what should happen when one system is unavailable. Silent failure is particularly dangerous when it affects price, stock or orders.
See our API integration services for more information about connecting ecommerce and business systems.
Our Magento development and support process
1. Describe the business impact
Tell us what is happening, which store journeys are affected, recent changes and the result the business needs.
2. We review the technical context
We confirm the edition, version, hosting, code access, deployment route, extensions and relevant integrations.
3. Priorities and scope are agreed
Urgent trading risks are separated from routine maintenance, development ideas and longer-term modernisation.
4. A controlled approach is chosen
Depending on risk, work may require backups, staging, version control, an agreed deployment window and a rollback route.
5. Relevant journeys are tested
Testing reflects the task and may include storefront, mobile, administration, checkout, orders, emails and integrations.
6. Work and findings are recorded
You receive a practical account of completed changes, important discoveries and recommended next actions.
Magento development and support pricing
The appropriate arrangement depends on the store’s complexity, version, custom code, integrations and the commercial risk attached to the work.
Website Care — €49 per month
Suitable only for light routine attention on a stable store where tasks remain within the plan’s available capacity.
Support Bank — €149 per month
Reserved support time for defined maintenance, investigation and smaller Magento development tasks.
Growth Support — €269 per month
More regular technical capacity for active ecommerce operations, integrations and continuing improvements.
Development and escalation — from €69 per hour
Custom development and specialist technical work normally carry a minimum initial project value of €185.
Qualifying new monthly clients can begin with a first month from €95, including up to five support hours. Larger upgrades, recovery work, migrations and bespoke development are reviewed and scoped separately. Urgent or high-risk work may be quoted from €95 per hour.
See all current website maintenance packages.
Frequently asked questions
Can you support a Magento store built by another developer?
Yes. We first review the available code, access, hosting, extensions, deployment process and integrations before consequential changes are made.
Do you provide ongoing Magento maintenance services?
Yes. The appropriate arrangement depends on the store’s complexity, change frequency, custom code and operational risk.
Can you help with Magento 2 upgrades?
Potentially. We assess the current version, PHP and Composer requirements, theme, extensions, custom modules and infrastructure before defining the work.
Can you develop custom Magento functionality?
Yes, where the requirement is suitable and the existing codebase provides a responsible basis for development. We review before committing to scope.
Can you investigate checkout and payment problems?
Yes. We can investigate code, configuration, extensions, browser errors, logs and supported payment integrations within the agreed access and scope.
Can you improve Magento performance?
We can identify likely application, frontend, database, process and hosting causes, then prioritise proportionate improvements.
Can you connect Magento to other systems?
Yes, where suitable APIs, feeds, webhooks, file exchanges or other supported integration methods are available.
Are you an Adobe partner?
No. FNO Services Europe provides independent Magento development and support and does not claim Adobe partnership or certification.
Do you work only with UK businesses?
No. We are based in Portugal and provide remote services to businesses in the UK, Europe and other international markets.
Discuss your Magento store
Describe the Magento edition and version, the immediate problem or planned development, relevant integrations and the business result you need.
We will review the available information and recommend a practical next step, whether that is investigation, maintenance, a scoped development task or a wider technical review.