Custom Plugins
Custom WordPress & WooCommerce Plugin Development
I build custom WordPress and WooCommerce plugins for features no off-the-shelf plugin covers — booking and CRM systems, custom content types and admin screens, pricing rules, API integrations and AI features. The code is clean, documented and yours, and built on WordPress's stable hooks so it keeps working through updates.
- Building for clients since 2021
- 25+ live client websites
- Clients in the US, UK, Canada & Europe
- open-source plugins I maintain on GitHub: Index Sentinel and Order Shield
- 2
- automated checks in the test suite of one booking and CRM plugin I built
- 509
- divisions managed from one custom plugin on a community-services website
- 15
Is this you?
The problems this solves
No plugin does what you need
You've tried several plugins and each one covers only part of the job.
Too many plugins doing small things
Five plugins for one feature, each with its own settings, updates and licence.
An old custom plugin nobody can maintain
Code from a previous developer that breaks with every update.
What you get
What's included
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Business systems
Booking, CRM, job boards, portals and directories built as plugins.
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Custom content types and admin screens
Structured content with clean editing screens your team can use.
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WooCommerce logic
Pricing rules, product options, checkout fields and order workflows.
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API integrations
Connections to CRMs, payment providers, couriers, booking tools and AI APIs.
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Settings and documentation
Clear settings pages, inline help and developer documentation.
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Testing and update safety
Automated tests where it matters and stable hooks so updates don't break it.
- PHP 8
- WordPress Plugin API
- WooCommerce hooks
- REST API
- Composer
- PSR-4
- JavaScript
- MySQL
- PHPUnit-style tests
- GitHub
Real projects
Proof from live websites
Process
How we work together
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01
Specification
We write down what the plugin must do, for whom, and how you'll manage it.
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02
Architecture
Data structure, admin screens and integrations planned before coding.
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03
Build and test
Built on staging with tests and real data.
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04
Deliver
Installed, documented and handed over with full source code.
Plugins I’ve built
- A bespoke clinic plugin that powers a US behavioral health provider’s website and its Canadian sister site.
- A 15-division content system for a community-services organization, so each division has its own structured pages managed from one admin.
- A salon booking platform combining appointments, CRM, shop, stock and reports in one dashboard, backed by an automated test suite of 509 checks.
- Retail + wholesale pricing for WooCommerce, used by two brands.
- Index Sentinel, a free WordPress security and SEO-spam plugin, and Order Shield, an open-source WooCommerce fraud-prevention plugin.
When a custom plugin is the right choice
Choose a custom plugin when the feature is specific to how your business works, when you’d otherwise need several plugins to get there, or when the feature is critical enough that you want full control over it. Keeping the feature in a plugin — not in the theme, as the WordPress Plugin Handbook recommends — means you can redesign the site later without losing it. More on WooCommerce development.
Pricing
How much does it cost?
Clear starting prices in USD. You get a fixed quote before any work starts, and nothing is billed until you approve it.
Plugin Feature
From $800
One focused feature as a plugin.
- Specification and plan
- Built and tested on staging
- Settings page and docs
- Full source code
Business System Plugin
From $2,500
A complete system such as booking, CRM or a portal.
- Custom data structure and admin
- Integrations and emails
- Automated tests
- 30 days of support after launch
FAQ
Frequently asked questions
Who owns the plugin code?
You do. You receive the full source code, and there are no licence fees or lock-in. If you ever work with another developer, they can continue from clean, documented code.
Will the plugin keep working after WordPress and WooCommerce updates?
I build on WordPress's and WooCommerce's stable public hooks and APIs, avoid editing core or other plugins, and test on staging before updates go live. Plugins on a care plan are re-tested after major updates.
Can you fix or extend a plugin someone else wrote?
Yes. I start by reviewing the code, then fix what's broken or extend it. If it's beyond saving, I'll explain why and quote a clean rebuild.
Can the plugin be published on WordPress.org?
Yes, if you want it to be public. I follow WordPress.org's coding and security standards; my own Index Sentinel plugin is built the same way.
Related services
All services →Describe the feature you need
Tell me what you need your site to do. You'll get a written plan and a fixed quote for the plugin.
