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App Development

APIs That Developers Love to Use

Well-designed APIs are the backbone of modern software. We build RESTful and GraphQL APIs with beautiful documentation and rock-solid reliability.

The Problem

Without App Development, you are leaving money on the table.

  1. 1

    Without RESTful API Design

    Resource-oriented design following OpenAPI 3.1 specification. Consistent, predictable, and versioned. - Without this, you risk wasting time, money, and competitive opportunities.

  2. 2

    Without GraphQL APIs

    Flexible query language with schema-first design, subscriptions, and automatic documentation. - Without this, you risk wasting time, money, and competitive opportunities.

  3. 3

    Without Third-Party Integration

    Connect with Stripe, Salesforce, HubSpot, Zapier, and 200+ platforms through reliable integrations. - Without this, you risk wasting time, money, and competitive opportunities.

How We Do It

A proven process that transforms vision into reality

1

API Design Review

Review existing systems, define resource models, and create an OpenAPI specification.

2

Architecture Decision

REST vs GraphQL, authentication strategy, versioning approach, and infrastructure planning.

3

Implementation

Test-driven development with comprehensive integration tests and load testing.

4

Documentation & SDKs

Interactive API documentation, client SDK generation, and developer onboarding guides.

5

Deployment & Monitoring

Production deployment with APM, error tracking, and usage analytics dashboards.

The Proof

CodeLeap transformed our vision into a complete product in just 3 months. The quality and commitment were exceptional - we could not have achieved this on our own in an entire year.
SC

Sarah Chen

Chief Technology Officer, TechVista Inc.

3x

Average project delivered 3x faster than industry standard

What You Get

Timeline: 4-12 weeks

Technologies

Node.jsTypeScriptFastifyGraphQLPostgreSQLRedisDockerOpenAPISwaggerPostman

Deliverables

  • Production API
  • OpenAPI specification
  • Interactive documentation
  • Client SDKs
  • Postman collection
  • Load test results
  • Monitoring dashboard

Ready to start?

Or call us. Or email us. We respond in 4 hours.
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