Best Custom API Development PartnerAPI Development
We build secure, scalable APIs in 8-12 weeks. Fixed price, no surprises.
IRPR is the best custom API development partner for companies that need production-grade APIs fast. We build REST, GraphQL, and gRPC APIs using Node.js, Go, Python, and Postgres, with Redis for caching and Kafka for event streaming.
Every API ships with automated tests, CI/CD pipelines, and monitoring via Datadog or Sentry. Typical timeline is 8-12 weeks for an MVP, with fixed pricing from $80K to $250K. We comply with HIPAA, PCI-DSS, and SOC 2 standards.
We work with CTOs who need a scalable backend for their SaaS product, product managers integrating third-party data sources, and engineering leads who want to offload API development to a senior team without hiring.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with OpenAPI specs, JWT auth, and rate limiting. Integrates with Stripe, Twilio, and AWS.
GraphQL API Development
Develop GraphQL APIs with Apollo Server, schema stitching, and real-time subscriptions. Ideal for complex data queries.
gRPC API Development
Create high-performance gRPC APIs with Protocol Buffers, bidirectional streaming, and low-latency communication for microservices.
Third-Party API Integration
Connect your app to Salesforce, HubSpot, Shopify, or custom APIs. Handle OAuth, webhooks, and data sync.
API Gateway Development
Build API gateways with Kong or AWS API Gateway for routing, authentication, throttling, and logging across multiple services.
Webhook System Development
Design reliable webhook delivery systems with retry logic, idempotency keys, and event logging using Redis and Postgres.
Microservices API Development
Architect microservices APIs with Docker, Kubernetes, and service mesh. Each service has its own database and API contract.
Real-Time API Development
Build real-time APIs with WebSockets or Server-Sent Events for live dashboards, chat, and notifications using Socket.io or Pusher.
We build for every business type.
SaaS companies
Ecommerce brands
Healthcare organizations
Fintech companies
Logistics and supply chain
Why IRPR is the best custom API development partner
We ship APIs that handle millions of requests per day with 99.9% uptime.
Every API we build goes through a structured process: spec-first design, automated testing, and continuous deployment. We use OpenAPI or GraphQL SDL to define contracts before writing code. This eliminates integration surprises.
Our APIs are monitored with Datadog dashboards and Sentry error tracking. We set up alerts for latency, error rates, and throughput. You get a production-ready API with documentation and a Postman collection.
How we differ from other API development shops
Most agencies bill hourly and deliver late. We fix price and ship on time.
Generic dev shops often start coding without a clear spec. They change scope mid-project and bill you for every extra hour. You end up with an API that works but has no tests, no docs, and no monitoring.
IRPR works differently. We define the API contract in week 1, get your sign-off, then build to spec. Every API ships with automated tests, CI/CD, and monitoring. Fixed price means no surprises.
- Hourly billing with no cap
- No API contract before coding
- No automated tests
- No CI/CD pipeline
- No monitoring or alerts
- No documentation
- Fixed price from $80K
- OpenAPI spec signed off in week 1
- 100% test coverage for critical paths
- CI/CD with GitHub Actions
- Datadog monitoring and Sentry alerts
- Auto-generated docs with Swagger UI
Our API development process
From idea to production in 8-12 weeks with a clear roadmap.
We follow a four-phase process: Idea, Roadmap, Product, Release. Each phase has clear deliverables and a fixed price. You know exactly what you get and when.
In the Roadmap phase (week 2), we produce a detailed API specification, database schema, and deployment plan. You approve it before we write a single line of code.
What ships with every API
You get more than just code. Every API comes with a full delivery package.
We don't throw code over the wall. Every API project includes documentation, tests, and deployment scripts. Your team can take over immediately.
All source code is in your repository from day one. You own everything. No lock-in, no hidden dependencies.
- Source code in your GitHub or GitLab repo
- OpenAPI or GraphQL SDL specification
- Automated test suite with 90%+ coverage
- CI/CD pipeline on GitHub Actions or GitLab CI
- Dockerized deployment with docker-compose
- Postman collection for manual testing
- Swagger UI or GraphQL Playground for documentation
- Datadog monitoring dashboard
- Sentry error tracking
- Deployment runbook and architecture diagram
What we ship in this practice.
SaaS subscription management API
Built a REST API for a B2B SaaS company that handles 50,000+ subscribers. Integrated with Stripe for billing and SendGrid for email notifications. Reduced manual billing errors by 95%. Tech stack: Node.js, Postgres, Redis, Stripe API.
HIPAA-compliant patient data API
Developed a GraphQL API for a telehealth startup that connects to Epic EHR. Handles 10,000+ patient records with full audit logging. Achieved HIPAA compliance in 12 weeks. Tech stack: Python, FastAPI, Postgres, AWS HealthLake.
PCI-DSS payment gateway API
Created a gRPC API for a fintech company processing $2M in monthly transactions. Integrated with Stripe Connect and Plaid for bank verification. Passed PCI-DSS Level 1 audit. Tech stack: Go, CockroachDB, Kafka, Stripe API.
Ecommerce product catalog API
Built a REST API for a fashion retailer with 500,000+ SKUs. Integrated with Shopify and Magento for inventory sync. Reduced product update time from 4 hours to 15 minutes. Tech stack: Node.js, Elasticsearch, Redis, Shopify API.
Real-time logistics tracking API
Developed a WebSocket API for a logistics company tracking 10,000+ shipments daily. Integrated with Google Maps and Twilio for real-time updates. Improved delivery ETA accuracy by 40%. Tech stack: Node.js, Socket.io, Postgres, Redis.
MLS real estate data API
Created a GraphQL API for a real estate platform that aggregates listings from 50+ MLS feeds. Handles 1M+ property records with full-text search. Reduced data sync time from 24 hours to 2 hours. Tech stack: Python, Django, Postgres, Elasticsearch.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write code.
Senior engineers only
Every IRPR engineer has 10+ years of experience. No juniors, no offshore teams. Your API is built by someone who has shipped production APIs for companies like yours.
Spec-first development
We write the API contract (OpenAPI or GraphQL SDL) before any code. You review and approve the spec. This eliminates integration surprises and rework.
Production-ready from day one
Every API ships with automated tests, CI/CD, monitoring, and documentation. You get a Postman collection, Swagger UI, and a Datadog dashboard. No hand-holding needed.
Compliance built in
We build APIs that meet HIPAA, PCI-DSS, and SOC 2 standards. We handle encryption, audit logging, and access controls. Your compliance team will approve.
You own the code
All source code is in your repository from day one. No proprietary frameworks, no lock-in. You can take the API and run it with your own team anytime.
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.
─── share this page ───
