API Development
FastAPI and Next.js backends, background workers, data pipelines, webhooks, and third-party integrations for products that need a dependable application layer.
What this covers
What does custom API development cover?
Custom API development turns product and workflow requirements into validated endpoints, data models, permissions, integrations, background jobs, and deployment configuration. The goal is a backend contract that the interface, workers, and external systems can use predictably.
Technical Deliverables
- API and data-contract design
- Validated endpoints and authentication
- Database models and migrations
- Background jobs, queues, or scheduled work
- Third-party integrations, webhooks, and retries
- Documentation, deployment, and handoff
Where it fits
Problems this service can address
- A frontend or AI prototype has no dependable backend contract behind it.
- Long-running work blocks requests instead of moving through a queue or worker.
- Several third-party systems need one controlled integration layer.
- Authentication, validation, errors, retries, and observability have been added inconsistently.
Common Questions
Do you build APIs without an AI component?
Yes. A normal application API, integration service, worker system, or data workflow is often exactly what a product needs.
Can you add endpoints to an existing backend?
Yes. I first review the current conventions, data model, deployment, and ownership boundaries so the addition fits the system instead of becoming a separate island.
Do you provide API documentation?
Yes. The handoff can include an OpenAPI contract, environment and deployment notes, important decisions, and integration guidance appropriate to the scope.