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Product Engineering

We design and build clear, well-documented REST and GraphQL APIs and integrate third-party services such as payment gateways, CRMs and ERPs.

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What we do

The core of this service, in practice.

REST and GraphQL API design with OpenAPI specs

Webhook handling with retries

Authentication, rate limiting and access control

Third-party integrations (payments, CRM, ERP)

Our approach

Step 01

Contract

Agree the API shape and documentation first.

Step 02

Build

Validated, well-tested endpoints.

Step 03

Integrate

Connect external services and data sources.

Step 04

Harden

Caching, limits and monitoring.

Technologies

Node.jsFastAPIGraphQLRedisPostgreSQLOpenAPI

What you receive

  • API service
  • OpenAPI documentation
  • Test collections
  • Integration guides

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Tell us what you are working on. We'll get back to you by email to talk through scope and next steps.

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or write to info@spedaris.com