People move the same data twice
Orders, customers, payments or operational updates are copied between systems because the connection is missing.
API integration services
Connect the systems your business depends on.
I design, build and release API integrations that remove duplicate work and keep information moving reliably between your tools.
Work directly with the senior engineer responsible for delivery.
Recognizable situations
This is usually the problem
An existing integration is unreliable
Failures are hard to spot, retries are manual, and nobody is confident that both systems agree.
A new vendor must fit your workflow
The vendor has an API, but your team still needs the business rules, edge cases and release work handled properly.
The outcome
A working integration, not a handoff document
The exact acceptance criteria are agreed before implementation. A typical sprint takes one defined flow from the current state through production release.
- System and data-flow map
- Authentication and API implementation
- Business rules, validation and error handling
- Retries, logs and practical failure visibility
- Test scenarios and production release
- Technical notes and post-release support window
How the work runs
Clear decisions before code.
- 01
Map the real flow
We identify the source of truth, required data, business decisions, failure paths and dependencies.
- 02
Agree on done
You receive a fixed proposal with scope, exclusions, acceptance criteria, schedule and price.
- 03
Build and release
I implement, test and take the agreed integration through production, then review it with you.
Why Cavendish
Senior ownership without the agency layers.
I spent five years at Viator, a Tripadvisor company, working on supplier connectivity and marketplace systems at global scale. That experience is directly relevant when integrations carry bookings, availability, payments or other business-critical data.
- Experience
- 10+ years
- Delivery
- Direct with João
- Working hours
- US and Europe overlap
Commercial scope
Integration & Automation Sprint
From US$4,000
Fixed price for one clearly described integration outcome. The proposal lists what will work, what is excluded, the access you provide and how we will verify delivery.
Clear boundaries from the start
- One bounded integration or workflow per sprint
- Third-party access and API limits confirmed before commitment
- No 24/7 support or responsibility for a vendor's uptime
Questions before we talk
Practical details.
Can you work with our existing software?
Yes. Most integration work connects software already in use. I first confirm the code, environments, API access and ownership boundaries.
What if the API is poorly documented?
That uncertainty is assessed before a fixed implementation promise. If it cannot be resolved quickly, I recommend a paid Technical Discovery from US$1,500.
Who does the work?
You work directly with me from scoping through release. If a specialist is genuinely needed, their role and deliverable are disclosed before work starts.
Start with the real problem
Tell me what needs to work differently.
Share the current systems, the blocked workflow and the result you need. I will reply with questions, a sensible next step or a clear no-fit.