Web Application Development
Complex, data-heavy products that stay fast under real load.
Software & Product Engineering
APIs that are a product, not a side effect
An API is a contract with people you will never meet. We design them to be obvious, documented, versioned and dependable enough that integration takes an afternoon.
- Engagement
- Fixed-scope project or platform retainer
- Typical timeline
- 4–12 weeks
- Delivered across
- All 50 US states
Overview
There are two kinds of API work. The first is exposing your capability to partners, customers or your own front ends — a product decision with design, documentation and support consequences. The second is integration: making systems that were never intended to cooperate exchange data reliably. We do both, and they demand different disciplines.
For public and partner APIs we treat developer experience as the product. Consistent resource naming, predictable errors, sensible pagination, honest rate limits, webhooks that retry, and documentation with runnable examples. If a competent developer cannot make their first successful call within ten minutes, the design is not finished.
For integration work the priority is resilience. Third-party systems go down, return malformed data and change without notice. We build with idempotency, retries with backoff, dead-letter queues and reconciliation reporting so failures are contained and visible rather than silent and corrupting.
- Target time to a partner's first successful call
- <10 minTarget time to a partner's first successful call
- Availability target for production APIs
- 99.95%Availability target for production APIs
- Silent integration failures — everything is observable
- 0Silent integration failures — everything is observable
Business benefits
What api development changes for you
The reasons this work earns its budget, stated as outcomes rather than features.
Design before code
OpenAPI or GraphQL schema agreed and reviewed with consumers first, so the contract is right before implementation makes it expensive to change.
Documentation developers trust
Generated from the schema, with authentication guides, runnable examples and changelogs — always in sync because it is never hand-maintained.
Versioning without breakage
A clear versioning policy, deprecation windows and compatibility testing so you can evolve without stranding integrators.
Security at the edge
OAuth 2.0, scoped keys, request signing, rate limiting and input validation, with abuse patterns considered during design.
Resilient integrations
Idempotent operations, exponential backoff, circuit breakers and dead-letter handling so an upstream outage degrades rather than corrupts.
Observable in production
Per-consumer metrics, latency percentiles, error budgets and tracing, so you know a partner is struggling before they email you.
Problems solved
If any of this sounds familiar
These are the situations clients describe in the first conversation, and what we do about each.
“Partners take weeks to integrate and flood support with questions.”
Consistent design, accurate documentation, a sandbox environment and client libraries turn integration into a self-service task.
“A third-party outage silently corrupts our data.”
Idempotency keys, transactional outbox, retry queues and reconciliation jobs that surface divergence for review rather than letting it accumulate.
“We cannot change the API without breaking someone.”
Versioning strategy, consumer-driven contract tests and usage telemetry so you know precisely who depends on what before you change it.
“The front end makes forty calls to render one page.”
Purpose-built aggregation endpoints or a GraphQL layer that lets clients fetch exactly what a view needs in a single round trip.
Our process
How we deliver it
Each stage has a defined output, so you always know what you are getting and when.
- 01
Contract design
Use cases, resource modeling, error taxonomy and schema definition, reviewed with the developers who will consume it.
- 02
Prototype and validate
A mock server against the schema so client teams can build in parallel and surface design problems while they are still cheap.
- 03
Implementation
Handlers, validation, authentication, rate limiting and persistence, with contract tests enforcing the schema in CI.
- 04
Developer experience
Documentation portal, sandbox credentials, client libraries and quickstart guides for the languages your consumers use.
- 05
Operate
Monitoring, per-consumer analytics, deprecation communication and a versioning policy you can actually maintain.
Technologies used
The tools behind the work
Chosen for maintainability and hiring depth rather than novelty. We will justify any choice on request, and we avoid technology that makes you dependent on us.
- Node.js
- TypeScript
- Python
- GraphQL
- OpenAPI
- Kong
- PostgreSQL
- Redis
- Kafka
- AWS API Gateway
- Postman
Industries served
Where this work lands most often
Sector context changes what good looks like. These are the industries where we have delivered this service repeatedly.
Why Mova
What working with us on api development is like
The same commitments apply to every engagement, regardless of size or service.
A defined first step
We scope a fixed-price starting point so you can evaluate us on api development before committing to a program.
Senior people, named
The team you meet is the team that delivers. You will know exactly who is accountable.
You own the output
Code, accounts, files and documentation are yours from day one, with no lock-in of any kind.
Measured, then reported
We baseline before starting and report against it honestly — including the months that fall short.
Questions
API Development: common questions
The questions we are asked most about api development, answered directly.
REST for straightforward resource access, public APIs and anywhere HTTP caching matters. GraphQL when many different clients need different shapes of the same data and over-fetching is a genuine cost. Plenty of systems run both — REST for partners, GraphQL internally.
More in Software & Product Engineering
Keep exploring
Related services
Custom Software Development
Systems built around how your business actually works.
Cloud Solutions
Infrastructure that scales with you and doesn't surprise your CFO.
SaaS Development
Multi-tenant products engineered to be sold, not just shipped.
Data Engineering
Pipelines that deliver correct data on time, every time.
Next step
Ready to talk about api development?
Thirty minutes with someone who has delivered this work. We will tell you what it would take, roughly what it would cost, and whether Mova is the right fit.
No pitch deck. A 30-minute conversation about what you are trying to achieve.