Custom API Development
Build APIs for your own applications. Let other systems connect to your software securely and reliably.
System Integration
API Development & Integration Services
Connect your systems, automate your workflows, and eliminate manual data entry. We build the bridges between your software so your business runs smoother.
Stop copying data between systems
If your team is manually moving information between software, you're wasting time and introducing errors. There's a better way.
Most business software can talk to each other through APIs (Application Programming Interfaces). We build the connections that let your website, CRM, accounting software, and other tools share data automatically.
Whether you need a simple webhook to sync orders with your accounts package, or a complex integration between multiple systems, I've built connections to hundreds of different APIs over 19 years.
Real-Time Sync
Data flows automatically between systems. Changes in one place update everywhere instantly.
Save Hours Weekly
No more manual exports, imports, or copy-paste. Free your team for work that matters.
Eliminate Errors
Automated data transfer means no typos, no missing entries, no duplicate records.
100+
API integrations delivered
Case Study
E-commerce to accounting automation for Procastangling
Procastangling was spending 2+ hours daily manually entering WooCommerce orders into Sage. With 50-100 orders per day during peak season, the admin burden was unsustainable and errors were creeping in.
I built a custom integration that automatically syncs every order to Sage in real-time—products, customers, VAT calculations, and payment status. Stock levels sync back to WooCommerce, and purchase orders are created automatically when inventory runs low.
15hrs
Saved per week
Zero
Data entry errors
Real-time
Stock accuracy
View Full Case Study"The integration has been transformative. What used to take hours now happens automatically. Our stock is always accurate, accounts are up to date, and our team can focus on actually serving customers."
— Mark Kelly, Owner, Procastangling
Experience
Systems we've integrated
I've built connections to over 100 different APIs. Here are some of the most common:
Accounting & Finance
Xero
Sage
QuickBooks
Stripe
GoCardless
CRM & Marketing
HubSpot
Salesforce
Mailchimp
ActiveCampaign
Logistics & Operations
Royal Mail
DPD
Parcelforce
Twilio
Don't see your system? If it has an API, We can integrate it. If it doesn't, we can often find workarounds using webhooks, file exports, or custom solutions.
Services
Integration services
Third-Party Integration
Connect your website or application to external services—payment providers, shipping APIs, CRMs, and more.
Data Migration
Move data between systems safely. Transform formats, clean duplicates, and maintain data integrity.
Webhook Implementation
React to events in real-time. When something happens in one system, trigger actions in another automatically.
Scheduled Sync Jobs
Regular automated syncs for systems that don't support real-time webhooks. Hourly, daily, or custom schedules.
API Documentation
Clear documentation for your custom APIs. Makes future development and third-party integrations straightforward.
Examples
Real-world integration scenarios
Here's what API integrations look like in practice:
E-commerce → Accounting
WooCommerce/PrestaShop orders sync to Xero/Sage automatically. Invoices created, VAT calculated, payments matched.
Result: 10+ hours saved weekly, zero data entry errors
Website → CRM
Contact form submissions create deals in HubSpot/Salesforce. Lead source tracked, team notified, follow-up tasks created.
Result: No leads lost, instant response, better conversion
Orders → Shipping
New orders automatically generate shipping labels via Royal Mail/DPD API. Tracking numbers sync back to customers.
Result: Faster dispatch, automatic customer updates
Booking → Calendar
Online appointments sync to staff calendars. Availability updates in real-time, double-bookings impossible.
Result: Seamless scheduling, no conflicts
Deliverables
What you get
Working Integration
Fully tested, production-ready connection between your systems. Not a proof of concept.
Error Handling
Graceful handling of failures. Automatic retries, logging, and alerts so problems don't go unnoticed.
Monitoring Dashboard
Visibility into sync status, last run times, and any issues. Know your integrations are working.
Documentation
Clear documentation of what was built and how it works. Essential for future maintenance.
Training
Walkthrough of the integration with your team. Understanding what happens and how to troubleshoot.
30-Day Support
Post-launch support for adjustments, edge cases, and ensuring everything runs smoothly.
Why Choose Us
The right partner for your integration??
vs. Zapier/Make
- No monthly per-task fees that grow with usage
- Handle complex logic that visual builders can't
- Better error handling and monitoring
- Data stays within your infrastructure
vs. iPaaS Platforms
- Fraction of the cost (no enterprise licensing)
- Custom code for your exact requirements
- No platform dependency or lock-in
- Direct support from the team who built it
vs. DIY/In-House
- 19+ years of API integration experience
- Know the pitfalls before we start
- Battle-tested patterns and approaches
- Your team can focus on their core work
Investment
What to expect
Simple Integrations
£500 – £2,000
Straightforward connections with well-documented APIs. 1-2 weeks.
- Single system to system
- Standard data mapping
- Webhook or scheduled sync
- Basic error handling
Most Common
Business Integrations
£2,000 – £8,000
Multi-system integrations with business logic. 2-6 weeks.
- Multiple connected systems
- Complex data transformation
- Two-way sync
- Monitoring dashboard
- Comprehensive error handling
Enterprise Integrations
£8,000+
Complex multi-system orchestration. 6+ weeks.
- Multiple systems and data flows
- Custom API development
- High-volume data handling
- Advanced monitoring and alerting
Compare to Zapier: A busy WooCommerce store syncing 100 orders/day to Xero could cost £50-100/month on Zapier. A custom integration has a one-time cost and runs free forever.
FAQs
Common questions
How long does an integration project take?
Simple integrations typically take 1-2 weeks. More complex multi-system integrations take 4-8 weeks. The biggest variable is usually API documentation quality and access to test environments.
What if the system doesn't have an API?
Many options still exist: scheduled file exports/imports, database connections, browser automation, or building a middleware layer. We'll assess your specific situation and recommend the best approach.
How do you handle errors and failures?
Every integration includes robust error handling: automatic retries with exponential backoff, detailed logging, and email/Slack alerts for failures. Failed operations are queued for retry, not lost.
Can you work with legacy systems?
Yes. I've integrated with systems ranging from modern REST APIs to SOAP services, FTP file drops, and even screen-scraping for ancient systems. There's usually a way.
What about security?
Security is built in: OAuth where supported, encrypted credentials, secure connections (HTTPS/TLS), and minimal data exposure. For sensitive integrations, data can stay entirely within your infrastructure.
Do you offer ongoing maintenance?
Yes. APIs change, and integrations need occasional updates. Maintenance packages from £75/month cover monitoring, updates when APIs change, and priority support for issues.
Ready to connect your systems?
Tell us what you're trying to connect and We'll give you an honest assessment of what's possible, how long it'll take, and what it'll cost.