API Development & Integration
REST and GraphQL APIs plus third-party integrations that hold up under real traffic.

The API layer is where most digital products quietly break. Poorly designed endpoints, missing pagination, no rate limiting, and integrations held together with hard-coded keys create problems that surface at exactly the wrong time.
We design APIs as products: versioned, documented, authenticated, rate-limited and monitored, with sensible error contracts. Whether it is a public API for your customers or an internal service connecting your CRM, payments and analytics, the standard is the same.
We also handle third-party integration work — Stripe, HubSpot, Salesforce, Xero, Google APIs, WhatsApp Business, delivery partners — including webhook handling, retry logic and reconciliation.
- 120ms
- P95 latency
- 99.8%
- Webhook success
- -87%
- Integration failures
99.8%
Webhook delivery success after retries
The problems we fix
Integrations that silently fail
Without retry logic, idempotency and alerting, a failed webhook means a lost order that nobody notices.
No documentation
Undocumented endpoints make every new integration a reverse-engineering project for your team.
Unbounded endpoints
Missing pagination, rate limits and query limits turn a traffic spike into an outage.
How we fix them
Reliable integration patterns
Idempotency keys, exponential-backoff retries, dead-letter queues and alerting on failures.
Docs and versioning
OpenAPI specification, interactive documentation and a versioning policy that protects your clients.
Protection by default
Authentication, scoped tokens, rate limiting, input validation and query complexity limits.
What API Development & Integration includes
What you actually get
- API design specification and data contracts
- REST or GraphQL implementation with authentication
- OpenAPI documentation and interactive reference
- Webhook publishers with retry, idempotency and signing
- Third-party integrations (payments, CRM, messaging, analytics)
- Rate limiting, caching and query-complexity protection
- Monitoring, structured logging and error alerting
- Integration tests and load testing report
Tools & platforms
- Node.js
- Fastify
- GraphQL
- OpenAPI
- Postman
- Redis
How we deliver it
- 01
Design
Define resources, contracts, auth model and versioning strategy.
Week 1
- 02
Prototype
Core endpoints and a mock server so consumers can start work early.
Week 2
- 03
Implement
Full implementation with validation, auth, rate limits and tests.
Week 2–5
- 04
Integrate
Connect third-party services with webhooks, retries and reconciliation.
Week 5–7
- 05
Harden
Load testing, monitoring, documentation and runbooks.
Week 7–8
API Development & Integration — common questions
Discuss your api development & integration project
Book a free 30-minute consultation and get a written plan — whether or not you work with us.