API Integration
Integration failures are rarely about the happy path. We build for the rest: idempotency keys, retry with backoff, dead-letter queues, and reconciliation jobs that surface the transaction that silently did not land.
What you receive
Concrete deliverables, defined before work starts and reviewed at handover.
- Integration architecture and contract definitions
- REST, GraphQL and webhook implementations
- Idempotent, retry-safe message handling
- Reconciliation and exception reporting
- Sandbox-to-production certification support
- Versioned API documentation
Typical stack
- Node.js
- n8n
- Kafka
- Redis
- OpenAPI
- GraphQL
- REST
Engagement models
- Fixed-scope project
- Time and materials
Services often combined with this
Custom Software Development
Bespoke platforms built around how your organisation actually works, not around a vendor's roadmap.
Web Development
Fast, accessible, SEO-ready web applications and corporate platforms built on modern React.
Mobile Apps
Native-quality Android and iOS applications, including offline-first field tools for low-connectivity environments.
Cloud & DevOps
Cloud architecture, containerisation, CI/CD and observability — with the cost model designed in.
Start with api integration
Send us the context and constraints. We will come back with scope, an estimate and the risks we can see from here.
Or email walter.mussagy@gmail.com — we reply within one business day.