REST and GraphQL APIs
We design contract-first: the OpenAPI specification or GraphQL schema is agreed before implementation starts. Frontend and backend teams work in parallel, and breaking changes get caught in review, not in production.
Engineering
API Development
Contract-first REST and GraphQL APIs that connect the systems your business runs on, hold up under production traffic, and are easy for other teams to build on.
1-2weeks from kickoff to a reviewed API contract
100%of endpoints documented in OpenAPI, no exceptions
24/7monitoring and alerting on every API we ship
0vendor lock-in: you own the code and the infrastructure
What we build
One backend team across design, integration and operations. Every API ships with the documentation, tests and monitoring it needs to run without us.
Third-party integrations
Payments, CRMs, ERPs, logistics, accounting: we connect the systems your business depends on. Retries, idempotency and reconciliation are built in from the start, because third-party APIs fail and yours should not.
Event-driven systems
Queues, streams and webhooks for work that should never block a request: notifications, syncs, long-running jobs. Built on Kafka, RabbitMQ or cloud-native equivalents, with dead-letter handling and replay.
Authentication and security
OAuth 2.0, OIDC, API keys, rate limiting and audit logging, matched to your risk profile. Security is designed in from the first endpoint, not patched on before the pentest.
Versioning and developer experience
OpenAPI documentation, generated SDKs, sandbox environments and a versioning policy that lets you evolve the API without breaking a single client.
AI capabilities as APIs
We wrap models, RAG pipelines and agents in stable, monitored endpoints with cost controls and fallbacks. Your AI features become products other teams can build on.
What you walk away with
Everything a team needs to run and extend the API without calling us first.
API contract
A complete OpenAPI or GraphQL specification: endpoints, schemas, auth flows and error semantics, reviewed with your team.
Production deployment
The API live on your infrastructure, with CI/CD pipelines, infrastructure as code and a tested rollback path.
Documentation and SDKs
A developer portal with reference docs, guides and generated client SDKs, so integrating takes days instead of weeks.
Observability setup
Dashboards, alerts and structured logging for latency, errors and cost, plus a runbook for the incidents that will eventually happen.
Test and security report
Load test results against agreed targets and a security review of authentication, input handling and rate limiting.
Engineering
How a build runs
01
Design
We map consumers, data flows and expected load, then write the API contract. You review real example requests and responses before a line of implementation exists.
02
Build
We implement in short iterations against the agreed contract, with integration tests and CI from day one. Working endpoints land in staging in the first weeks, not at the end.
03
Harden
Load tests, security review, rate limits, monitoring and alerting. We measure p95 latency and error budgets against agreed targets before anything counts as done.
04
Launch and operate
We deploy through CI/CD, hand over documentation and runbooks, and stay on as long as you need us: new endpoints, new integrations, performance work.
Three ways to engage
Fixed scope where it can be fixed, flexible where your roadmap needs it. Every model starts with a free 30-minute call.
API audit
2 weeks · fixed fee
A fixed-scope review of an existing API: security, performance, versioning, documentation and integration health. Ends in a prioritized fix list your team can execute on its own.
- Security review of auth, input handling and rate limiting
- Performance analysis backed by load test data
- Documentation and developer experience assessment
- Prioritized findings with effort estimates
API build
6-12 weeks
A new API or integration layer designed, built and deployed end to end: from contract to production monitoring.
- Contract-first design reviewed with your team
- Implementation with tests and CI/CD
- Security hardening and load testing
- Documentation, SDKs and handover
Platform retainer
Monthly · ongoing
A senior backend team that keeps your API platform moving: new endpoints, new integrations, upgrades and performance work, month by month.
- Committed monthly engineering capacity
- New endpoints and integrations as your roadmap needs them
- Monitoring, incident support and dependency upgrades
- Scale up or down with 30 days notice
Who this is for
CTOs replacing brittle integrations
Your systems talk through exports, cron jobs and copy-paste. We replace that with an integration layer that is monitored, documented and testable.
Product teams opening a public API
Your customers and partners want to build on your product. We design the API, the auth, the docs and the rate limits so the platform play actually works.
Companies shipping AI features
The model works in a notebook; now it has to serve customers. We put your AI behind stable, cost-controlled endpoints the rest of the business can rely on.
Scale-ups outgrowing the monolith
Traffic and team size have outgrown the original architecture. We carve out services and queues where they pay for themselves, without a big-bang rewrite.
Technologies we ship with
TypeScript & Node.js
Python & FastAPI
NestJS
GraphQL & Apollo
PostgreSQL
Redis
Kafka & RabbitMQ
OpenAPI & Swagger
OAuth 2.0 & OIDC
AWS & GCP
Docker & Kubernetes
Grafana & Prometheus
Questions, answered
Can you work with our existing codebase?
Yes, and most engagements do exactly that. We extend, refactor or wrap what you have; a rewrite is the last resort, and we will tell you honestly if it is the right one. The audit is the fastest way to find out where your API stands.
REST or GraphQL?
It depends on your consumers. REST is the default for public APIs and service-to-service traffic; GraphQL earns its complexity when many clients need different views of the same data. We recommend one, in writing, with reasons, and we build both.
How do you keep the API secure?
OAuth 2.0 or OIDC for identity, scoped tokens, rate limiting, input validation and audit logs by default. Security is reviewed at the design stage and tested before launch, and we work smoothly alongside your pentest vendor.
Who maintains the API after launch?
Your team, ours, or both. Handover includes documentation, runbooks and a walkthrough, so your engineers can own it fully. If you would rather keep us on, the retainer covers monitoring, incidents and new endpoints.
How do you price this?
The audit is fixed-fee with a defined scope and deliverables. Builds are quoted after the design phase, when the scope is concrete enough for an honest number. The retainer is a flat monthly rate you can adjust with 30 days notice.
Systems that should talk to each other, but don't?
Book a free 30-minute call with a senior engineer. You leave with an architecture sketch and a straight answer on effort, whether or not we work together.
Book an architecture call