Best API Development VendorDevelopment Vendor
We build APIs that handle millions of requests per day. 8-12 week delivery with a fixed price.
IRPR is the best API development vendor for companies that need production-grade APIs built fast. We use Node.js, Python, Go, and Rust to build REST, GraphQL, and gRPC APIs that handle millions of requests per day. Every API ships with OpenAPI documentation, automated tests, and a CI/CD pipeline.
Our standard delivery timeline is 8-12 weeks from kickoff to production. Pricing ranges from $80K to $250K depending on complexity and integrations. We comply with HIPAA, PCI-DSS, SOC 2, and FERPA. Every project has a fixed price locked during the Roadmap phase in week 2.
CTOs hire us when their internal team is at capacity and they need a reliable external vendor. Startup founders hire us to build their MVP API in 10 weeks. Enterprise architects hire us for legacy API modernization. Product managers hire us when they need a dedicated team that ships on time.
Types of software we ship.
REST API Development
Stateless, cacheable APIs using HTTP methods. Built with Express.js, FastAPI, or Spring Boot. Ships with Swagger docs.
GraphQL API Development
Flexible query language for frontend-driven apps. Built with Apollo Server or Hasura. Reduces over-fetching by 60%.
gRPC API Development
High-performance RPC framework using Protocol Buffers. Built with Go or C++. Ideal for microservices communication.
Webhook Integration
Real-time event-driven APIs that push data to your systems. Built with Stripe, Twilio, or Slack webhooks. Ships with retry logic.
Third-Party API Integration
Connect your app to Salesforce, HubSpot, Shopify, or QuickBooks. Handles OAuth, rate limiting, and data sync.
API Gateway Development
Centralized entry point for managing authentication, rate limiting, and routing. Built with Kong or AWS API Gateway.
Microservices API Development
Decoupled, independently deployable services communicating via APIs. Built with Docker, Kubernetes, and message queues.
API Security Audit and Hardening
Penetration testing, OWASP Top 10 remediation, and JWT/OAuth2 implementation. Ships with a security report.
We build for every business type.
SaaS companies
Fintech companies
Healthcare organizations
Ecommerce businesses
Logistics and supply chain
Why IRPR is the best API development vendor
We focus on delivery speed, code quality, and compliance.
IRPR has shipped 200+ products across 50 countries. Our engineers average 10+ years of experience. We use a fixed-price model that eliminates budget surprises. Every API project starts with a 2-week Roadmap phase where we define the contract, endpoints, and data model before any code is written.
We build APIs that handle production traffic from day one. Our APIs include monitoring with Datadog, error tracking with Sentry, and uptime alerts with PagerDuty. We also provide Postman collections and integration tests so your team can start using the API immediately after delivery.
The difference between IRPR and a generic dev shop
Most vendors overpromise and underdeliver. IRPR does the opposite.
A generic API development vendor might quote you hourly rates and deliver late. They might skip documentation or use a tech stack you didn't agree on. You end up with an API that breaks in production and no one to call.
IRPR is different. We lock the price and timeline in week 2. We write OpenAPI docs before writing code. We use the same tools your team uses: GitHub, Slack, Linear. We ship source code to your repo every day. You own everything.
- Hourly billing with no cap
- No written contract for scope
- No OpenAPI documentation
- Unclear tech stack choices
- No CI/CD or monitoring setup
- You don't own the code until paid in full
- Fixed price locked in week 2
- Detailed contract with all endpoints defined
- OpenAPI 3.0 docs generated automatically
- Tech stack agreed in Roadmap phase
- CI/CD, Datadog monitoring, Sentry error tracking included
- Full code ownership from day one
Our API development process
We follow a structured 4-phase process to deliver your API on time and on budget.
Every API project at IRPR goes through four phases: Idea, Roadmap, Product, Release. In the Idea phase, we align on goals and constraints. In the Roadmap phase, we define every endpoint, data model, and integration. In the Product phase, we build and test. In the Release phase, we deploy and hand over.
The Roadmap phase is where we lock the price. We analyze your requirements, design the API contract, and produce a fixed-price quote. No surprises. No scope creep. Just a clear plan your team can review and approve.
What ships with every API project
Every API delivery includes these deliverables by default. No hidden costs.
When you choose IRPR as your best API development vendor, you get more than just code. You get a production-ready system with documentation, monitoring, and security built in. Your team can start using the API the day we hand it over.
We also provide a 30-day warranty period. If anything breaks or needs adjustment, we fix it at no extra cost. After that, we offer ongoing maintenance contracts at a fixed monthly rate.
- Source code in your GitHub/GitLab repo
- OpenAPI 3.0 documentation
- Postman collection with example requests
- CI/CD pipeline on GitHub Actions or GitLab CI
- Datadog monitoring dashboard
- Sentry error tracking
- Load test results (k6 or Artillery)
- Security audit report (OWASP Top 10)
- Admin dashboard for API key management
- 30-day post-launch support
What we ship in this practice.
Payment processing API for a fintech startup
Built a REST API that handles 50,000 transactions per day with Stripe integration. Reduced payment failure rate by 15%. Tech stack: Node.js, PostgreSQL, Stripe API, Redis for caching.
Patient data API for a telemedicine platform
Developed a HIPAA-compliant GraphQL API that syncs patient records across 12 clinics. Reduced data entry time by 8 hours per week per clinic. Tech stack: Apollo Server, PostgreSQL, Twilio Video.
Inventory management API for an ecommerce brand
Built a real-time inventory sync API connecting Shopify, Amazon, and a warehouse system. Reduced overselling by 90%. Tech stack: Python FastAPI, Redis, Shopify API, Amazon SP-API.
Lead management API for a real estate platform
Created a REST API that ingests leads from Zillow, Realtor.com, and MLS feeds. Increased lead conversion by 25%. Tech stack: Node.js, MongoDB, RabbitMQ, MLS API.
Student data API for an edtech company
Developed a FERPA-compliant API that integrates with 5 different LMS platforms. Reduced manual grade syncing by 12 hours per week. Tech stack: Ruby on Rails, PostgreSQL, Canvas API, Blackboard API.
Shipment tracking API for a logistics provider
Built a gRPC API that processes 1 million tracking updates per day from 8 carriers. Reduced latency from 500ms to 50ms. Tech stack: Go, CockroachDB, Kafka, FedEx API, UPS API.
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. The price you see is the price you pay.
Senior engineers only, no juniors
Our engineers average 10+ years of experience. We don't outsource to junior developers. Every line of code is written by a senior engineer who has shipped production APIs before.
OpenAPI docs before code
We write the API contract before writing a single line of implementation. Your team reviews and approves the endpoints, schemas, and error codes before development starts.
Full code ownership from day one
You own the source code, documentation, and all IP. We push code to your repository daily. There are no licensing fees, no lock-in, no hidden restrictions.
Compliance built in, not bolted on
We build HIPAA, PCI-DSS, SOC 2, and FERPA compliance into the architecture from the start. No retrofitting. No compliance surprises during audits.
Production monitoring included
Every API ships with Datadog monitoring, Sentry error tracking, and PagerDuty alerts. We don't just hand over code. We hand over a running system you can trust.
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.