Expert Backend API Development ConsultantsBackend API
Our senior engineers build production-grade backend APIs in 8-12 weeks. Fixed pricing, full ownership, no surprises.
IRPR builds production-grade backend APIs for startups and enterprises. We use Express.js, Fastify, GraphQL, Django, FastAPI, and serverless frameworks on AWS Lambda or Google Cloud Run to deliver high-performance endpoints.
A typical backend API project ships in 8-12 weeks with a fixed price between $80K and $250K. Every API includes automated CI/CD, Swagger documentation, error tracking via Sentry, and load testing with k6.
We work with CTOs launching new products who need a scalable API from day one. Product managers migrating from monolithic to microservices. Tech leads at funded startups requiring HIPAA- or PCI-compliant endpoints. SaaS founders building integrations for their platform.
Types of software we ship.
REST API development
Build stateless, cacheable endpoints with Express.js or FastAPI. Includes OpenAPI specs, rate limiting, and JWT auth.
GraphQL API development
Design type-safe schemas using Apollo Server or Relay. Batching, subscription support, and persisted queries included.
Microservices API development
Decompose monoliths into containerized services with gRPC, RabbitMQ, or NATS. Deployed on Kubernetes.
Event-driven API (Webhook / Queue)
Asynchronous event handling with AWS SNS/SQS, Kafka, or Redis streams. Reliable delivery with retry and dead-letter queues.
Real-time API (WebSocket)
Low-latency bidirectional communication using Socket.io or WebSocket API on AWS API Gateway. Ideal for live dashboards and chat.
Serverless API (Lambda / Functions)
Pay-per-invoke endpoints on AWS Lambda, Azure Functions, or Google Cloud Functions. Auto-scaling with zero cold starts via provisioned concurrency.
API Gateway & Aggregation
Unify multiple backend services behind a single gateway using Kong, Tyk, or AWS API Gateway. Caching, auth, and throttling built in.
Background Job API (Cron / Queue)
Schedule and process async tasks with Celery, Sidekiq, or Bull. Chaining, retries, and monitoring with Redis or Postgres.
We build for every business type.
SaaS products
E-commerce
Healthcare
Fintech
Logistics & Supply Chain
Why expert backend API consultants matter
A poorly designed API can cost your team months of refactoring and lost revenue.
Our senior engineers have shipped over 200 APIs across 50 countries. Each API is built with spec-first design, automated testing, and documentation that ships on day one. We use OpenAPI to generate interactive Swagger docs, ensuring your frontend team never waits for endpoint definitions.
We enforce strict versioning policies (e.g., URI-based or header-based) and provide migration guides for breaking changes. Every API includes health check endpoints, structured logging via the ELK stack, and PagerDuty alerts for 99.9% uptime.
The difference between a generic dev shop and real API experts
Not all development teams understand API-first design, security, and scalability.
Generic shops often treat the API as an afterthought. They hand-code controllers, skip documentation, and ignore rate limiting until production fails. IRPR treats your API as the core product. We design the contract first, then build the implementation.
Our process includes threat modeling (OWASP Top 10), load testing with k6 to target 10,000+ req/s, and automated schema validation. The result is an API your teams can trust and your customers can rely on.
- No API contract before development
- No automated tests for endpoints
- Inconsistent error responses (400, 500)
- No rate limiting or throttling
- Hourly billing, scope creep common
- Code stays on freelancer's machine
- Spec-first with OpenAPI before coding
- Integration tests with 90%+ coverage
- Standardized error formats (RFC 7807)
- Built-in rate limiting (token bucket) and autoscaling
- Fixed price from week 2, no surprises
- Full source code transferred to your GitHub
How we deliver expert backend API consulting in 8-12 weeks
Our process is transparent, stage-gated, and designed to reduce risk.
We start with a two-week Discovery phase to define endpoints, data models, and performance targets. You get a detailed Roadmap with a fixed price. No guesswork, no hidden costs.
During the Build phase, we ship incremental releases every two weeks. Each iteration includes a running API on a staging environment. You test, we iterate. Final deployment includes IaC (Terraform), CI/CD, and monitoring.
What ships with every expert backend API project
Every deliverable is designed to let your team run independently after launch.
We don't just hand over code. You get the entire toolchain: infrastructure scripts, monitoring dashboards, and internal developer documentation. Your team can extend the API without IRPR.
All projects include a two-week warranty period post-launch. We fix any production bugs at no additional cost. After that, we offer monthly retainers for maintenance and extensions.
- Source code in your private GitHub repo
- OpenAPI 3.1 spec (Swagger UI hosted)
- Postman collection with environment variables
- CI/CD pipeline (GitHub Actions or GitLab CI)
- Load test results (k6 report, 10K req/s target)
- Error tracking (Sentry with performance monitoring)
- Deployment scripts (Terraform + Ansible)
- API monitoring dashboard (Datadog or Grafana)
- Security audit report (SonarQube + OWASP checks)
- Runbook with common troubleshooting steps
What we ship in this practice.
Multi-tenant SaaS API for B2B CRM
Built a GraphQL API with Apollo Server that powers a CRM used by 500+ companies. Each tenant gets isolated data via schema isolation. Reduced new tenant setup from 2 weeks to 2 hours. Tech stack: Node.js, GraphQL, Postgres, Redis.
Real-time auction API for e-commerce marketplace
Designed a WebSocket-based API for live bidding on collectible items. Handles 5,000 concurrent connections with sub-200ms latency. Increased auction completion rate by 35%. Tech stack: Node.js, Socket.io, MongoDB, AWS ECS.
HIPAA-compliant API for telehealth platform
Built a FHIR-compliant API for patient scheduling and video visits. Passed HIPAA audit with no findings. Enables 10,000+ daily appointments. Tech stack: Python FastAPI, FHIR, Postgres (encrypted), AWS GovCloud.
PCI-compliant payment gateway API
Developed a tokenized payment API that processes $50M/month in transactions. Achieved PCI-DSS Level 1 certification. Reduces integration time for merchants by 60%. Tech stack: Go, Stripe Connect, Redis, AWS with vault.
Event-driven logistics tracking API
Created an event-driven API using Kafka to track 1 million shipments per day. Provides real-time visibility via webhooks. Reduced manual tracking calls by 80%. Tech stack: Python, Kafka, PostgreSQL, Kubernetes.
Serverless API for content publishing platform
Built a serverless REST API on AWS Lambda to serve 200+ articles per second. Auto-scales to zero during low traffic, saving 70% in infrastructure costs. Tech stack: AWS Lambda, API Gateway, DynamoDB, CloudFront.
Why teams hire us.
Fixed Price from Week 2
After our Discovery phase (2 weeks), you get a fully scoped fixed price. No hourly billing, no surprise invoices. 98% of our projects come in on budget.
Senior Engineers Only (no juniors)
Every engineer on your project has 10+ years of experience. We never outsource to junior devs or use offshore body shops. Our team averages 14 years in backend development.
Full IP Ownership on Day 1
All code, documentation, and infrastructure scripts are your property. We sign a standard IP transfer agreement before we start. You own everything.
8-12 Week Delivery Guarantee
We ship production-ready APIs in 8-12 weeks, not 6 months. 98% of our projects deliver on time. If we are late, your next sprint is free.
HIPAA/PCI/SOC 2 Compliance Built In
We have built 40+ HIPAA APIs and 20+ PCI-compliant systems. Compliance controls are coded into the CI/CD pipeline, not bolted on after launch.
Async-First Workflow (No Time Zone Dependency)
IRPR operates async-first with daily overlap hours. Your team in New York or San Francisco gets synchronous code reviews and standups. We ship code from 4 continents.
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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