Xero Integration Development for UK Businesses
Make Xero work with the rest of your business.
Custom integrations, workflow automation and dependable data sync—built around the systems you already use.
- UK-registered engineering company
- Written technical scope before build
- Built around your existing systems
Independent integration engineering
Built around your existing systems
PICOVAL is an independent software engineering company and is not affiliated with, endorsed by or an official partner of Xero.
When Xero is right—but disconnected
The accounting platform may be working. The operational gap is usually between Xero and the rest of the business.
- 01
Staff re-enter customer, invoice or payment data between systems
- 02
Sales and ecommerce operations happen outside Xero
- 03
Sync gaps create mismatched or incomplete records
- 04
Automations fail silently and are discovered too late
- 05
An off-the-shelf connector does not fit the real workflow
Xero integrations built around your workflow
We map the actual process first, then connect only the data and actions the business needs.
Shopify or WooCommerce
Synchronise customers, orders, invoices, refunds and payment context.
Stripe or Square
Connect payment events with invoices, fees and reconciliation data.
HubSpot or Salesforce
Move approved customer and deal data into reliable accounting workflows.
Internal CRM
Keep finance aligned with the system your team actually works in.
Custom ERP or application
Build a controlled integration layer for business-specific rules.
What we can build with the Xero API
Final scope depends on your Xero plan, permissions and the systems being connected.
Contacts and customer records
Invoices, credit notes and payment status
Payments and reconciliation data
Products, items and purchase orders
Reports and approved custom mappings
Webhooks and status synchronisation
Data migration, repair and backfill
Troubleshooting existing Xero integrations
Designed for accounting data that must stay dependable
A useful integration is not just an API call. It needs predictable behaviour when tokens expire, APIs slow down or records conflict.
OAuth 2.0 token lifecycle
Secure authorisation, refresh handling and least-privilege access.
Event-driven webhooks
Respond to relevant changes without fragile polling loops.
Retries and idempotency
Reduce duplicate records and recover safely from temporary failures.
Audit trails and monitoring
Make sync activity, errors and recovery visible.
Rate-limit aware processing
Queue and pace workloads instead of dropping operations.
Permissions and data minimisation
Access only what the integration genuinely requires.
A clear path from disconnected systems to a working integration
- 01
Discovery and mapping
Review systems, records, ownership, exceptions and desired outcome.
- 02
Architecture and scope
Define data flow, rules, failure handling, phases and written cost.
- 03
Build and test
Implement against official APIs and test normal, duplicate and failure cases.
- 04
Launch and monitor
Release in a controlled way with logs, alerts and a support plan.
Why PICOVAL
Custom engineering, not a cookie-cutter connector
Accounting data treated as operationally sensitive
Written scope and phased delivery before major spend
Monitoring and support can be included after launch
Frequently asked questions
No. PICOVAL is an independent software engineering company. We build integrations using the official APIs and the access granted by your business.
Yes, when a generic connector cannot support your workflow or has become unreliable. We first assess what should be retained, repaired or replaced.
Often, yes. We confirm API availability, data quality, duplication rules and reconciliation requirements during discovery before committing to a migration.
The integration needs authorised access, but we design for least privilege and document the permissions required before implementation.
After a technical discovery, we provide a written scope with assumptions, delivery phases and cost. Small, focused integrations are welcome.
Tell us what Xero needs to connect to
Share the systems, the broken workflow and the outcome you need. We will help identify the smallest dependable integration that solves it.