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API creation and integration

Make your systems work together.

Create REST or GraphQL APIs and connect the services your product relies on. Design for clear contracts, failures and the next integration.

Overview

API development and integration connects systems through defined interfaces. Our team builds APIs and connects third-party services with clear contracts, access controls and handling for errors, retries and changes.

What we work on

  • Define endpoints, schemas and access rules.
  • Implement integrations with validation and error handling.
  • Test contracts, retries and important failure scenarios.

What you receive

  • Documented API contracts
  • Working integrations
  • Integration tests

What shapes the cost?

Endpoint and integration count, data mapping, provider limits, authentication and failure handling.

What shapes the timeline?

Integration timelines depend on working credentials, provider behaviour and data quality. We verify the important flows early and allow time for end-to-end testing.

What to bring to the first conversation

API documentation, sandbox access, data flows, authentication requirements and expected request volumes.

Selected work

Experience behind the service

GrowthDay: source portfolio visual
Product engineering

Engineering for a platform that grew to 400K+ users.

Growing a personal development platform meant rebuilding its frontend, improving mobile checkout and giving the enterprise product room to grow.

400K+ Platform users
+9% Checkout conversion improvement

FAQ

Before we get started.

Can you connect third-party services?

Yes. We review the provider API, authentication, rate limits and webhook behavior, then scope the integration and its failure handling.

REST vs. GraphQL: which should we choose?

REST commonly exposes resources through endpoints. GraphQL lets clients request fields through a typed schema. The choice depends on clients, data relationships, caching and operational complexity, not which approach is newer.

How do you handle API failures and rate limits?

Our team designs error handling around the provider’s contract and the business operation. That can include timeouts, bounded retries, idempotency, queues and useful logs. Retrying every failed request blindly can create duplicate work.

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What's on your mind?

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