API Development AgencyAgency
We design and build APIs that developers love to use. From REST to GraphQL to gRPC your API ships in 12 weeks with a fixed price.
IRPR is an API development agency that builds production-grade APIs using Node.js, Go, Python, and Postgres. We design REST, GraphQL, and gRPC endpoints with OpenAPI specs and automated testing from day one.
Every project ships with a fixed price ($80K-$250K) and a typical timeline of 8-12 weeks. We handle authentication, rate limiting, monitoring, and compliance (HIPAA, PCI-DSS, SOC 2) out of the box.
CTOs hire us to replace outdated legacy APIs. Product owners hire us to launch new integrations. Startup founders hire us to build their core API platform before seeking Series A.
Types of software we ship.
REST API development
Build stateless RESTful APIs with JSON responses, pagination, filtering, and HATEOAS links using Express or Fastify.
GraphQL API design
Create flexible GraphQL schemas with Apollo Server, dataloaders for N+1 prevention, and automated schema stitching for microservices.
Microservices API gateway
Design gateway layers with Kong or Envoy to route traffic, handle authentication, and aggregate responses across 10+ services.
Third-party API integration
Connect your app to Stripe, Shopify, Salesforce, or 50+ other APIs with retry logic, idempotency keys, and webhook handling.
gRPC API development
Implement high-performance gRPC services using Protocol Buffers for internal service-to-service communication with low latency.
WebSocket API & real-time endpoints
Build WebSocket servers with Socket.IO or ws for live dashboards, chat, notifications, and collaborative features.
API security & auth framework
Integrate OAuth 2.0, OpenID Connect, JWT, and API keys with rate limiting and IP whitelisting for zero-trust architectures.
Serverless API development
Deploy APIs on AWS Lambda or Cloudflare Workers with auto-scaling, cold start optimization, and DynamoDB or FaunaDB storage.
We build for every business type.
SaaS companies
Fintech & payments
Healthcare providers
Ecommerce & retail
Logistics & supply chain
What an API development agency delivers
Every API you need to connect your platform, automate workflows, and open new revenue streams.
IRPR builds APIs that serve as the backbone of your product. Whether you need a public REST API for third-party developers or an internal microservices layer, we design endpoints with clear contracts, versioning, and deprecation strategies. Our APIs are documented automatically with OpenAPI and tested for edge cases before deployment.
We have shipped APIs for companies in fintech, healthcare, logistics, and ecommerce. Each API ships with monitoring (Datadog), error tracking (Sentry), and uptime guarantees (99.9%). We also provide Postman collections and SDK examples in Python, JavaScript, and Ruby.
Generic dev shop vs IRPR
Most agencies build APIs that break under load or have no documentation. IRPR builds APIs that scale and ship on time.
A typical dev shop quotes hourly and delivers an API with no tests, no monitoring, and no documentation. You pay for discovery twice and end up rewriting the integration layer in 18 months.
IRPR delivers a fully documented, tested, and deployed API in 12 weeks. We include automated CI/CD pipelines, rate limiting, 100% test coverage on critical paths, and a Postman collection you can share with your team on day one.
- Hourly billing with no cap
- No automated tests until go-live
- Documentation written manually in Word
- No rate limiting or throttling
- No monitoring beyond basic logs
- No versioning strategy, breaks on deploy
- Fixed price from $80K
- 100% test coverage on all endpoints
- OpenAPI spec auto-generated and hosted
- Built-in rate limiting with Redis
- Datadog dashboards and Sentry alerts
- Semantic versioning with deprecation warnings
How we build your API in 12 weeks
A step-by-step process from discovery to deployment with zero surprises.
We use a proven 5-phase framework that keeps every project on budget and on schedule. Each phase ends with a milestone you can review and approve before the next begins.
Our senior engineers work directly with your team. No junior developers, no offshore handoffs. You get a single point of contact and a weekly demo of the running API.
What ships with your API
Every API project includes these deliverables by default. No add-ons, no hidden fees.
You own everything. Source code goes into your GitHub repository from day one. We ship a production-ready API with documentation, monitoring, and deployment scripts.
We also provide a Postman collection, SDK examples in 3 languages, and a runbook for on-call engineers. Your internal team can start using the API within an hour of handover.
- Source code in your GitHub repo with full commit history
- CI/CD pipeline on GitHub Actions with automated tests
- OpenAPI 3.0 spec hosted on SwaggerHub or Redoc
- Postman collection with environment variables and tests
- Docker containers for local development and production
- Datadog dashboard with API latency, error rate, and request count
- Sentry error tracking with alerting on 5xx errors
- Rate limiting configuration (Redis sliding window)
- API key management dashboard or admin panel
- Runbook for on-call engineers with rollback instructions
What we ship in this practice.
Public REST API for a SaaS platform
Built a public REST API for a B2B SaaS company that reduced partner integration time from 6 weeks to 3 days. Used Express, PostgreSQL, and Stripe Connect. Achieved 99.9% uptime with Datadog monitoring.
Real-time payment processing API
Designed a WebSocket-based payment status API for a fintech startup. Integrated with Plaid and Stripe, handling 500 transactions per second. Eliminated polling and cut latency from 2 seconds to 200ms.
HIPAA-compliant FHIR API for telehealth
Developed a FHIR R4 API for a telehealth platform serving 50 clinics. Implemented SMART on FHIR authentication and audit logging. Reduced patient data retrieval time by 40%.
GraphQL API for a real estate marketplace
Created a GraphQL gateway aggregating MLS, Google Maps, and mortgage rate data. Used Apollo Federation across 5 microservices. Cut frontend development time by 30%.
Inventory sync API for multichannel retail
Built an inventory sync API connecting Shopify, Amazon, and a warehouse WMS via webhooks. Used Node.js and Redis to handle 10,000 SKU updates per minute. Reduced stockouts by 25%.
Logistics route optimization API
Developed a REST API for a last-mile delivery company to compute optimal routes with Google OR-Tools. Handled 20,000 stops/day and reduced delivery costs by 15%.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. If the scope changes, we re-quote before we build.
Senior engineers only, no juniors
IRPR assigns only engineers with 8+ years of experience. No offshore teams, no junior developers learning on your dime. You get a principal engineer as your day-to-day contact.
OpenAPI spec before code
We write the full API contract in OpenAPI 3.0 before writing a line of code. Your team reviews and approves the spec. No guesswork, no rewritten endpoints.
100% test coverage on critical paths
Every endpoint has unit, integration, and contract tests. We use Jest, Supertest, and Pact for consumer-driven contracts. Tests pass in CI before any merge.
Compliance built in from day one
We implement HIPAA, PCI-DSS, SOC 2, or FERPA requirements as part of the architecture. No retrofitting. Encryption at rest (AES-256) and in transit (TLS 1.3) is standard.
We ship in 12 weeks or less
Our 5-phase framework delivers a production-ready API in 12 weeks. 98% of our projects ship on time. If we are late, you get a discount on the next phase.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.
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