Manual re-entry
Staff export spreadsheets or retype information because operational software and accounting are disconnected.
DeltaCore / Xero & business systems integration
Connect Xero with the software your business already uses.
Reduce repeated data entry and manual accounting hand-offs with custom Xero API integrations built around your existing business workflows.
DeltaCore provides NZ-based software engineering for systems integration, OAuth2 authentication, background processing and financial workflow automation, with reliability and accurate data handling in mind.
- Xero APIs & OAuth2
- Custom .NET integrations
- Operational visibility
Where integrations help
Stop copying the same information between systems.
Often the problem isn't the accounting platform itself. It's the steps between accounting and the software that runs the rest of the business.
Work that happens too late
Transactions and reconciliations rely on someone remembering to run a process or check a result.
Hard-to-diagnose failures
A failed import or expired connection creates confusion when systems provide little status or audit information.
Specialist engineering
Custom integrations that fit your systems.
We help connect the software you already rely on, after confirming what's technically possible through each product's supported APIs and permissions.
Xero API connectivity
Develop services that communicate with supported Xero API endpoints, including OAuth2 connection flows, tenant identification and token renewal.
Accounting workflow automation
Replace agreed manual hand-offs with scheduled or event-driven processing, using .NET background services and tools such as Hangfire.
Business application integration
Connect accounting workflows to custom applications, operational systems, databases and third-party services through APIs and controlled data exchange.
Validation and reconciliation
Design field mapping, pre-submission checks and reconciliation steps around your accounting rules and the capabilities of the API.
Authentication and access
Handle connection setup, permissions and credential lifecycle responsibly rather than relying on manual or brittle authentication workarounds.
Monitoring and recovery
Design logging, job history and actionable failure handling so integration problems can be investigated and resolved.
Commercial engineering experience
Experience delivering integrations used in production.
Our engineering background includes designing and implementing a production accounting integration between a commercial hospitality platform and Xero. That work included OAuth2, automated journal processing, Hangfire background jobs, account mapping and operational diagnostics, with the integration used by real customers.
This work was completed during previous employment, not as a DeltaCore customer engagement. Product demonstrations and employer materials are not reproduced here.
How we work
Start with the business process
Rather than proposing new software immediately, we begin by understanding your current applications and the hand-offs causing problems.
- 01
Map the current process
Identify where information originates, who approves it and how it reaches accounting.
- 02
Check feasibility and safeguards
Review supported API operations, data mapping, permissions, failure modes and relevant constraints.
- 03
Deliver in testable steps
Implement an agreed scope with validation, operational visibility and a clear handover.
Common questions
A few things worth knowing.
Can you integrate our existing software with Xero?
Possibly. It depends on the other software's supported API or data export options, the required Xero operations and your accounting workflow. We can assess feasibility first.
Do we need to replace any existing applications?
Not necessarily. We often start by exploring whether existing applications can be connected safely before considering more disruptive changes.
Can the integration run automatically?
Where the APIs and business rules support it, yes. Scheduled jobs and event-triggered processing can reduce manual work, with suitable review, logging and failure handling.
Can you help if our existing integration keeps failing?
Yes. We can investigate authentication, API errors, data mapping, job scheduling and operational diagnostics to identify an appropriate fix or improvement.
Start a conversation
Let's discuss the systems you need to connect.
Tell us which business application you use alongside Xero and which manual task or integration problem you'd like to solve. A short outline is enough to begin.
Prefer to contact us directly? See our contact details