Experienced REST API Development ConsultantsAPI Development
We design and build production-grade REST APIs for web and mobile apps. Our team has shipped 200+ products across 50+ countries.
IRPR builds custom REST APIs for web and mobile applications. We use Node.js, Python (Django/FastAPI), Go, and .NET Core with PostgreSQL, Redis, and AWS Lambda.
Projects ship with full documentation (OpenAPI 3.0), automated test suites, and CI/CD pipelines. Typical timeline for a production-grade API is 8-12 weeks. Pricing starts at $80K and scales based on endpoints and integration complexity. APIs are built with security standards like OWASP Top 10 and SOC 2 controls.
We are hired by CTOs who need a scalable API for their SaaS platform, engineering managers replacing legacy REST services, startup founders launching a new mobile app backend, and enterprise architects integrating multiple internal systems.
Types of software we ship.
Public REST API
Exposes endpoints for external developers. Includes rate limiting, API keys, and documentation via OpenAPI 3.0.
Mobile App Backend API
REST endpoints for iOS/Android apps. Handles user auth, push notifications, and file uploads with AWS S3.
Microservices API
Internal REST APIs for decoupled architecture. Uses Docker, Kubernetes, and RabbitMQ for async messaging.
API Gateway / Aggregation
Single entry point that routes requests to multiple services. Built with Kong or AWS API Gateway and caching via Redis.
Real-Time WebSocket API
Bidirectional communication for live features. Uses Socket.io or AWS API Gateway WebSockets with auto-scaling.
Data Ingestion API
REST endpoints for batch/stream data. Processes JSON, CSV, or Avro with Kafka and stores in Redshift or BigQuery.
GraphQL API (REST alternative)
Flexible query language over HTTP. Built with Apollo Server, Prisma ORM, and federation for microservices.
Serverless API on AWS Lambda
Stateless REST endpoints without server management. Uses API Gateway, Lambda, DynamoDB, and CloudWatch monitoring.
We build for every business type.
SaaS platforms
Fintech
Healthcare
Ecommerce
Mobile app companies
Why hire experienced REST API consultants
Our track record shows consistent delivery across 200+ API projects.
We have built REST APIs for startups and enterprises in fintech, healthcare, ecommerce, and more. Every API includes OpenAPI documentation, automated tests, and deployment scripts.
Our team follows a fixed-price model after the Roadmap phase. You know the cost and timeline before we write a line of production code.
Consultants vs. staff augmentation
The difference between hiring us and hiring freelancers or junior teams.
Generic developers often bill by the hour with no cap, deliver inconsistent code quality, and skip documentation. You end up with a fragile API that no one can maintain.
IRPR delivers a fixed-price project with full OpenAPI docs, CI/CD pipelines, and 6 months of support. Every API is built by senior engineers using a repeatable process.
- Hourly billing with unknown total
- No API documentation
- No CI/CD pipeline
- No security review
- Inconsistent coding standards
- No post-launch support
- Fixed price per project
- OpenAPI 3.0 docs included
- Automated CI/CD with GitHub Actions
- OWASP Top 10 security audit
- Code review and style guide enforced
- 6 months of post-launch maintenance
Our API development process
We follow a four-phase approach from idea to release.
Each phase includes specific deliverables and client checkpoints. The process ensures alignment on scope, architecture, and timeline from day one.
What you get with every API project
These deliverables ship by default — no add-ons or upsells.
Every REST API project includes the following deliverables, documented and accessible.
- Source code in your private GitHub repo
- OpenAPI 3.0 specification (YAML/JSON)
- CI/CD pipeline with GitHub Actions or GitLab CI
- Sentry error tracking and uptime monitoring
- Postman collection for all endpoints
- Database schema and migration scripts
- Security audit report (OWASP Top 10)
- Deployment runbook for AWS or GCP
- 15-day post-launch support included
- Architecture diagram and decision log
What we ship in this practice.
Payment processing API for a fintech startup
Built a REST API handling 10,000 transactions/day with idempotency and webhooks. Used Node.js, PostgreSQL, Stripe Connect, and AWS ECS. Reduced manual reconciliation by 20 hours/week.
Patient data exchange API for a telehealth platform
Developed a HIPAA-compliant REST API to sync EHR records between clinics. Used Python FastAPI, FHIR standard, and AWS HealthLake. Cut patient data retrieval time from 5 minutes to 20 seconds.
Inventory tracking API for a mid-market ecommerce brand
Created a REST API to manage real-time inventory across 5 warehouses. Used Django REST Framework, PostgreSQL, Redis, and Stripe for payment sync. Reduced stock discrepancies by 95%.
Subscription management API for a SaaS company
Built an API for billing, plan changes, and usage tracking. Used Node.js, MongoDB, Stripe Billing, and AWS Lambda. Scaled from 1,000 to 50,000 subscribers with zero downtime.
Real-time analytics API for a media platform
Developed a WebSocket + REST hybrid API for live view counts and ad optimization. Used Go, Kafka, Redis, and BigQuery. Processed 1 million events per minute.
Logistics tracking API for a shipping company
Provided a REST API for parcel tracking, route optimization, and driver assignment. Used .NET Core, SQL Server, Azure Maps, and SignalR. Reduced delivery delays by 30%.
Why teams hire us.
Fixed price, no hourly billing
Every project gets a fixed quote after the Roadmap phase. You never face surprise bills or scope creep charges.
Senior engineers only
Our team averages 10+ years of experience. No junior developers on client projects.
Open source docs and Postman collections
You receive full OpenAPI 3.0 specification and Postman collections. Your team can test and integrate immediately.
6 months of post-launch support
We include 6 months of maintenance and support after deployment. Covers bug fixes, patches, and minor updates.
Compliance and security built in
We build to HIPAA, PCI-DSS, and SOC 2 standards. Every API goes through OWASP Top 10 security review.
98% on-time delivery record
Over 200 projects completed with 98% on-time delivery. We use strict sprints and weekly demos to keep everyone aligned.
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.