Idempotent by design
Every operation is safe to repeat, so a duplicate webhook or a retry never creates a second charge or a second order.
Infrastructure
Make your systems talk to each other.
APIs, webhooks and sync jobs built to handle the real world — rate limits, retries, duplicates and partial failure.
Discuss this project
2–5 weeks per integration, less once the first is live
The short version
Integrations look trivial until they're live. Then the partner's API rate-limits you at month end, a webhook arrives twice, a timeout leaves an order half-created, and someone reconciles the difference by hand every morning.
We build integrations that assume all of that. Idempotent handlers, exponential backoff, dead-letter queues, and a reconciliation job that catches whatever still slips through — plus visibility so you find out from a dashboard, not a customer.
Typically built with
TypeScript Node.js Python GraphQL REST Kafka Redis PostgreSQL
What's included
How we approach integration services
Rate limits and backoff handled
Queued work with exponential backoff and per-partner concurrency caps, so a busy period doesn't get you throttled or banned.
Failures you can see
Dead-letter queues, replay tooling and alerting — failed messages are visible and re-runnable, not lost.
APIs worth integrating against
If you're the one publishing, we design versioned, documented APIs with webhooks and sandbox credentials.
What you get
Delivered at the end
- Working integrations with monitoring and replay tooling
- API documentation and sandbox environment where relevant
- Reconciliation jobs for anything money-related
- Runbook for the failure modes that will actually happen
Right fit
This is for you if
- 01 Teams re-keying data between systems by hand
- 02 Products that need payments, shipping or CRM connections
- 03 Companies exposing an API to their own customers
Not quite what you need? Tell us the outcome you're after — if a different service or a smaller piece of work would get you there faster, we'll say so.
Ask us insteadHow we work
A clear path from idea to impact
- 01
Discover
We map your goals, users, and constraints into a sharp, prioritized scope.
- 02
Design
Architecture and interfaces are prototyped and validated before a line ships.
- 03
Build
Engineers deliver in tight sprints — you see working software every week.
- 04
Scale
We launch, monitor, and harden — then grow the system alongside your business.
Questions
What clients ask about integration services
The things that come up most on the first call. Anything else, just ask — we answer straight.
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What if the third-party API is badly documented?
Common. We probe the sandbox, capture real responses, and build against observed behaviour rather than the docs — then write down what we learned so the next person doesn't repeat it.
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Can you integrate with legacy or on-premise systems?
Yes — SOAP, flat-file drops, SFTP, direct database reads and scheduled exports included. Older systems just need more care around failure handling.
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How do we know data stayed in sync?
Reconciliation jobs compare both sides on a schedule and alert on drift. For anything financial, that check is non-negotiable.
Often paired with
All servicesCloud Development
Cloud-native systems on AWS, GCP, and Azure — built to scale and priced to fit.
View serviceDevOps & Automation
CI/CD, infrastructure-as-code, and observability that let you ship with confidence.
View serviceEmbedded Systems Development
Firmware and IoT — from bare-metal microcontrollers to connected device fleets.
View serviceNext step
Let's scope integration services
Thirty minutes with the engineer who'd lead it. You leave with a scope, a number, and an honest read on whether it's worth building.
Prefer email? support@zeetek.net