Systems Integration Development
Logic first.
Connections last.
Most businesses don't have a software problem. They have five pieces of software that don't talk to each other, and a person in the middle copying data between them.
We do systems integration development by working out where your logic and data should actually live first. Then we connect the CRM, accounting, booking and operations tools you already run to that one logic layer, so each record is entered once and is correct everywhere.
Connecting the tools you already run
Keep the software that works. Fix the gaps between it.
You've chosen your CRM, accounting package and booking system for good reasons. The problem is the gaps between them. We connect them through their APIs so a booking creates the client record, the job, and the invoice without anyone re-typing it. Where a tool has no usable API, we tell you up front.
- CRM, accounting and booking connections
- Operations and job management tools
- Email, calendar and document systems
- Status changes that trigger the next step
One logic layer, one source of truth
Decide where each fact lives. Then enforce it.
Integration fails when every system thinks it owns the same data. We map which system is the source of truth for each record, write the rules for how changes flow, and build an API-first logic layer that sits between your tools. Your business rules live there once, instead of being half-copied into every app's settings.
- Data model and source-of-truth mapping
- API-first integration layer
- Business rules defined once, in code
- Full code and repository ownership
Data syncing that holds up
No more copy-and-paste. No more silent drift.
A sync that works on day one and quietly breaks in month three is worse than no sync. We build syncing with validation, retries and logging, so failed updates are caught and reported rather than lost. When two systems disagree, the logic layer decides which one wins, and the decision is recorded.
- Scheduled and event-driven syncing
- Validation before data is written
- Retries, error alerts and audit logs
- Conflict rules between systems
Deliverables
We can build
- CRM to accounting invoice sync
- Booking systems linked to job management
- Client portals pulling from several back-office tools
- Automated onboarding across multiple systems
- Webhook and API workflows between apps
- Reporting that combines data from every tool
- Data migration between platforms
- A central API for your other systems to use
How we work
Same method, every build.
- 01Discovery
- 02Logic Map
- 03Data Model
- 04Build
- 05Handover
Case study
Already tangled?
If your systems are held together by workarounds, Zapier chains and a spreadsheet nobody wants to touch, that's rescue work. We audit what you've built, find where the logic actually lives, and rebuild the connections properly without throwing away what your team already knows.
See Rescue Work →FAQ
Common questions
Which systems can you integrate?
Any system with a usable API, which covers most modern CRMs, accounting packages, booking platforms, payment providers and operations tools. Older or closed systems may need file exports, a database connection or a workaround. We check every system during discovery and tell you what's possible before you commit to a build.
How is our data kept secure?
Each connection gets only the access it needs. Credentials are stored as secrets, never in code, and data moving between systems is encrypted in transit. We agree as part of the logic map which data flows where, and you own the accounts, the code and the logs.
What ongoing maintenance does an integration need?
Some. Integrations depend on other companies' software, which changes. Logging and error alerts mean problems are visible when they happen rather than weeks later. We can maintain the integration for you, or hand it over with documentation so your own team or another developer can.
What happens when a vendor changes their API?
Vendors usually announce API changes and deprecate old versions over months, not overnight. Because your business rules sit in your own logic layer rather than inside each tool, a vendor change means updating one connection, not rebuilding your workflow. If something breaks without notice, the error alerts tell us which connection and which records were affected.
Copying data between systems by hand?
Tell us which tools you run and where the re-typing happens. We'll tell you what can be connected and where the logic should live.
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