Plugins, not theme glue
Business logic lives in a versioned, testable plugin with clean namespacing, so it survives theme switches and stays maintainable.
web & commerce / specialist delivery
WordPress plugin development.
Custom WordPress plugins built like software: proper namespacing, hooks, the REST API, tests, and clean upgrade paths, deployed through CI, not the admin.
2015Building production software since
8+ yrsLongest active partnership
100%Source and production visibility
5.0Across 18 verified Clutch reviews
Scope
What this service covers.
The right home for custom WordPress functionality is a plugin, not a pile of code in functions.php or a child theme. We build plugins with proper namespacing, custom post types and ACF where they fit, REST API endpoints, and clean settings pages, following the WordPress coding standards so the next engineer to open the codebase is not decoding thousands of lines of glue.
WordPress coding standards
Proper hooks, filters, and WordPress Codex conventions, so the plugin integrates cleanly and other developers can read it.
Configurable, never hard-coded
Well-structured settings pages and options give you control without touching code, keeping the plugin flexible as needs change.
REST API and integrations
Custom REST endpoints and third-party integrations where the plugin needs to talk to other systems, with secure, rate-limit-aware handling.
Versioned and CI-deployed
Plugins live in git and ship through CI to staging and production, not edited live in the WordPress admin.
Secure and upgrade-safe
Input sanitised and output escaped, least-privilege data access, and clean upgrade paths so updates do not break existing installs.
In production
Work from the same practice.
Related delivery with the client context and measurable outcomes attached.
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A bespoke platform that finances aesthetic machines on Direct Debit.
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03
Beauty commerceA custom Shopify store for a French beauty brand.
Custom theme, customer accounts, loyalty rewards, referrals and gift-with-purchase offers.
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04
Home improvementMade-to-measure shutters with live pricing.
A seven-step product builder with live previews, sample orders and supplier tools.
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Home servicesA conversion platform for a growing UK boiler-cover provider.
Custom plan configuration, postcode-qualified lead journeys, CRM synchronisation and campaign landing pages.
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06
TravelTour bookings with a custom mobile-first checkout.
A multilingual website connected to the booking API, with deposits, coupons and affiliate tracking.
90+core web vitals, mobile & desktop
07
Event technologyA commission-free ticketing platform built for ownership and scale.
Multi-organiser commerce, Stripe instalments and two native apps in one connected platform.
£2M+processed since launch
A clear delivery process
From first decision to production.
The same senior team stays close to scope, architecture, build, launch and what comes next.
- 01
Scope & cost
We agree the outcome, users, integrations, budget and main technical risks before the work starts.
- 02
Architecture
We plan the data, interfaces and failure modes around the way the system needs to operate.
- 03
Build & review
You receive source access, a working environment and regular demonstrations throughout delivery.
- 04
Launch & support
We launch, document and monitor the work, then hand it over or continue as your engineering team.
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Clutch★★★★★5.0 / 5.0Across 18 independently published client reviews
“They have a deeper technical knowledge than any web designer I've met to date.”
Common questions
Planning the work.
01Can you build a plugin to extend WooCommerce or another plugin?+
Yes. We regularly extend WooCommerce and other established plugins through their hooks and APIs rather than editing their code, so your customisations survive their updates. Where the required behaviour sits outside a host plugin's extension points, we build a standalone plugin that integrates cleanly alongside it.
02Will the plugin survive WordPress core and theme updates?+
That is the point of building it as a proper plugin. Business logic lives independently of the theme, uses documented hooks rather than fragile workarounds, and is tested against current WordPress versions. We maintain a clean upgrade path so core and theme updates do not break it.
03Do you distribute plugins on the WordPress.org repository or keep them private?+
Either. We build private plugins for a single business as often as ones intended for public distribution. For public plugins we follow the repository's guidelines and security review expectations; for private ones we focus on your specific requirements and deploy them through your own pipeline.
Start a project
Bring us the exact problem.
Book a 30-minute call with the senior team that will scope and lead the work.