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Freelance WordPress Development

Third-Party & API Integration Services for WordPress

Need WordPress to talk to another system? We connect your website with CRMs, payment services, booking systems, APIs and other third-party tools so information can move between them automatically.

Third-Party & API Integration Services

Keeping systems separate can lead to duplicated data and time-consuming manual work. We integrate WordPress with third-party software, APIs, and databases, helping your different systems work together and reducing the need for repetitive tasks.

Many businesses rely on several different systems to manage their day-to-day operations. Whether you need to connect WordPress with inventory software, a CRM, payment provider, or your own business database, we can build the integration needed to move information between them.

We can develop custom WordPress plugins and webhooks that connect to external REST APIs and GraphQL endpoints. Where supported by the systems involved, we can synchronise information in both directions, helping to keep things such as customer records, product stock, orders, and other business data up to date.

We also consider security, performance, and what happens when an external service isn't available. Integrations are built with appropriate error handling and recovery in mind, so a temporary problem with another system doesn't unnecessarily bring your WordPress website to a halt.

NOT OFF
THE SHELF.
BUILT AROUND
HOW YOU WORK.
Third-Party & API Integrations We Can Build:21
  • 01Custom REST API and GraphQL integrations
  • 02WordPress data synchronisation with external systems
  • 03ERP integrations with SAP, Salesforce, NetSuite, and Odoo
  • 04Marketing integrations with HubSpot, ActiveCampaign, and Mailchimp
  • 05Real-time inventory and fulfilment integrations
  • 06Custom webhooks and event triggers
  • 07OAuth 2.0 and API token authentication
  • 08Real estate MLS and IDX integrations
  • 09Third-party booking and event integrations
  • 10Accounting, invoicing, and financial system integrations
  • 11Background API processing
  • 12API error handling, logging, and retries
  • 13Headless applications using WordPress data
  • 14Legacy system API integrations
  • 15Data parsing, sanitisation, and transformation
  • 16SSO with SAML, OAuth, Google, and Microsoft
  • 17External data mapped to WordPress Custom Post Types
  • 18API rate limiting and response caching
  • 19API documentation and technical handover
  • 20Ongoing API maintenance and monitoring
  • 21...and much more.

Not sure exactly what you need?

If you have an idea for a web application but aren't sure how to turn it into a specification, we can help define the features, recommend the right architecture, and plan a scalable WordPress solution before development begins.

Selected Work

WordPress solutions built around real problems.

Mortgage & LTV Calculator Plugin
01 / Case Study
Custom WordPress Plugin

Mortgage & LTV Calculator Plugin

A modern, high-converting Mortgage & Loan-to-Value (LTV) Calculator built as a custom, real-time WordPress plugin.

WordPress / JavaScript View case study →
Booking & Appointment System Plugin
02 / Case Study
Custom WordPress Plugin

Booking & Appointment System Plugin

Replaced a messy booking workflow with a custom WordPress plugin that manages appointments, payments, and schedules all in one place.

WordPress / Twilio / Stripe View case study →
Solar Quote Calculator
03 / Case Study
Custom WordPress Plugin

Solar Quote Calculator

A snappy, custom-built solar estimator plugin designed to help our client capture better leads without the bloat.

WordPress / JavaScript View case study →
ID Badge Product Configurator
04 / Case Study
Custom WordPress Plugin

ID Badge Product Configurator

An interactive, real-time WooCommerce product configurator and admin order preview system built as a custom WordPress plugin.

WordPress / WooCommerce View case study →
Custom WooCommerce Shipping Pricing Matrix Plugin
05 / Case Study
Custom WordPress Plugin

Custom WooCommerce Shipping Pricing Matrix Plugin

Streamlined a complex shipping pricing setup into a clean WooCommerce plugin featuring 3D volumetric bin packing and precise regional UK surcharge rules.

WordPress / WooCommerce View case study →
UFH Instant Quote Tool
06 / Case Study
Custom WordPress Plugin

UFH Instant Quote Tool

A modern, high-converting Underfloor Heating (UFH) Instant Quote Tool built as a custom, real-time WordPress plugin.

WordPress / JavaScript View case study →
Custom WooCommerce & Subscription Box Builder
07 / Case Study
Custom WordPress Theme

Custom WooCommerce & Subscription Box Builder

A bespoke WordPress & WooCommerce store engineered around a multi-step custom dog treat box builder and flexible subscription engine.

WordPress / WooCommerce / Alpine.js View case study →
WordPress Custom WooCommerce & DVLA Plate Lookup Engine
08 / Case Study
Custom WordPress Theme

WordPress Custom WooCommerce & DVLA Plate Lookup Engine

A custom WordPress website engineered with real-time DVLA API plate lookups, instant vehicle identification, and a 60,000+ plate import database.

WordPress / WooCommerce / API View case study →
Vinyl Record Store & Catalog Engine
09 / Case Study
Custom WooCommerce Theme

Vinyl Record Store & Catalog Engine

A lightweight WooCommerce site built for an independent record shop to make searching, previewing, and buying vinyl fast and effortless.

WordPress / WooCommerce / Alpine.js View case study →
Web Server Hosting E-Commerce
10 / Case Study
Custom WordPress Development

Web Server Hosting E-Commerce

We engineered a lightweight custom e-commerce system for an independent host, making server selection, ping testing, and checkout fast and effortless.

WordPress / Custom E-Commerce View case study →
Ben had a great idea for my project and completed the project to our requirements very quickly. He also helped me tweak a few issues and answered my questions quickly. We'll work with Ben again!
Gordon S.
Third-Party & API Integration Services

WordPress Third-Party API Integration FAQs

Have questions about connecting WordPress with your other software and services? Here are answers to common questions about WordPress API integrations.

Ready to elevate your digital presence with a custom-built website or app?
Contact us today for a free consultation.

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