Build

APIs other developers trust and enjoy integrating with.

A good API is a product in its own right. We design services and integrations with clear contracts, predictable errors, versioning and documentation, so your partners integrate in days rather than weeks.

Backend & APIs
4–12 weeks

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When to call us

Sound familiar?

01
Partners or customers need a public API to integrate with you.
02
Your systems exchange data through spreadsheets, scripts or manual steps.
03
Your backend is slow, fragile or impossible to change safely.

How Tulmira handles it

Our approach, step by step

1
Contract first
We agree the API in an OpenAPI or AsyncAPI specification with its consumers before writing the implementation.
2
Model the data
A data model designed around how the business works, with migrations and integrity rules in the database.
3
Build and harden
Authentication, rate limits, idempotency and observability added as standard, not as an afterthought.
4
Document and support
Reference docs, examples and a sandbox, so integrators succeed without opening a support ticket.

Our standards

Non-negotiable practices

Contract tests that fail the build when an API changes unexpectedly
Versioning and deprecation policies agreed up front
Consistent, documented error responses
Structured logs, metrics and tracing on every service
Secrets in a vault, never in code or config files
Load-tested before launch at realistic peak traffic

What you get

Production services with OpenAPI or AsyncAPI specifications
Developer documentation and a sandbox environment
Integration tests and contract tests in CI
Monitoring dashboards and alerting

Tools we use for this

Spring Boot
Node.js
PostgreSQL
Kafka
Redis
OpenAPI

Proof

Built the same way we build our own products

Proxar

Developer Tools

Proxar's semantic diff engine detects API and schema changes before they break integrations.

See Proxar →

FAQ

Common questions

Anything else, ask us directly.

It depends on who consumes the API. REST suits most public APIs, GraphQL suits complex front ends, and events suit systems that react to change. Many products use a mix.