Software Engineering
API Development
REST, GraphQL, and gRPC APIs your partners can rely on for years.
25+
Public APIs shipped
3–12 wk
Typical timeline
0
Breaking changes at 12 mo
100%
OpenAPI documented
TypeScriptOpenAPIGraphQLgRPCPostgresKongAWS API GatewayStoplight
Zero breaking changes across 25+ public API platforms at 12-month review.
Book a scoping callWhat's included
API design & versioning
Resource modeling, pagination, filtering, and semver versioning strategy — designed before the first endpoint ships.
REST & OpenAPI
OpenAPI 3 specs, generated SDKs, and interactive docs — so partners integrate without a Slack thread per question.
GraphQL & gRPC
Federated GraphQL for product flexibility, gRPC for internal high-throughput services — chosen by access pattern, not hype.
Auth & rate limiting
API keys, OAuth2, scoped tokens, and per-tenant rate limits with clear 429 responses and retry guidance.
Webhooks & events
Signed webhook payloads, delivery retries, and partner-facing event catalogs — so integrations stay in sync.
Sandbox & developer experience
Test environments, seed data, and example integrations — the DX details that determine adoption.
How we work
Week 1
Contract design
OpenAPI draft reviewed with your team and one design partner before implementation.
Week 2–5
Core endpoints
Auth, CRUD, webhooks, and error taxonomy implemented with contract tests.
Week 5–8
Docs & SDKs
Reference docs, quickstarts, and client libraries generated and tested against sandbox.
Week 8+
Partner launch
Pilot partners onboarded, feedback incorporated, and versioning policy published.
From Evolve Edge
“Production-ready means your auditors, your ops team, and your on-call engineers all agree the system is sound. We build for that standard from day one.”
FAQ
REST or GraphQL?
REST for public partner APIs — simpler to version and cache. GraphQL when your own clients need flexible queries. We recommend based on who integrates.
How do you prevent breaking changes?
Explicit versioning, deprecation headers, contract tests in CI, and a published changelog partners can subscribe to.
Can you document an existing API?
Yes. We reverse-engineer OpenAPI from code, fill gaps, and add the sandbox and examples that were missing.
Do you build SDKs?
TypeScript, Python, and Go SDKs generated from OpenAPI with hand-tuned ergonomics for the common paths.
Related services
Ready to scope this?
Start your API Development engagement
A senior engineer will review your project and reply within one business day with a clear next step.