Senior Backend API Development ConsultantsAPI Development
We build production-grade APIs for your product. 12-week timelines from concept to launch.
IRPR builds backend APIs for web and mobile products. We use Node.js, Go, Python, and PostgreSQL to create high-throughput, secure APIs that scale to millions of users.
Every project ships with CI/CD, monitoring, and full documentation. Our senior backend API development consultants deliver in 10-14 weeks with fixed pricing from $100,000 to $300,000, depending on complexity and compliance needs like HIPAA or PCI-DSS.
Product managers needing a real API for an MVP hire us. CTOs modernizing legacy systems hire us. Founders building SaaS products and enterprises requiring compliant integrations hire us.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with Node.js or Go. Supports JSON, XML, and OAuth 2.0 authentication.
GraphQL API Development
Design flexible GraphQL APIs with Apollo or Relay. Reduces over-fetching and speeds up frontend development.
Microservices Architecture
Decompose monolithic backends into independent microservices. Uses Docker, Kubernetes, and message queues like RabbitMQ.
API Gateway Setup
Configure Kong or AWS API Gateway for rate limiting, caching, and routing. Centralize authentication and logging.
Real-Time API (WebSockets)
Implement WebSocket servers for live data streaming. Ideal for chat, notifications, and real-time dashboards.
CRUD API Backend
Build standard Create, Read, Update, Delete endpoints with proper validation and error handling. Uses PostgreSQL or MongoDB.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or any external API. Includes retry logic and error mapping.
Backend-as-a-Service (BaaS) Custom Build
Create a custom BaaS with user auth, file storage, and database APIs. Powered by Firebase-like architecture on AWS.
We build for every business type.
SaaS Companies
E-Commerce Brands
Healthcare and Fintech
Enterprise and B2B
Media and Content
Backend API consulting by the numbers
When you hire senior backend API development consultants from IRPR, you get predictable delivery and real results.
We have shipped over 200 APIs and full-stack products across 50 countries. Our average timeline from kickoff to production is 12 weeks, with 98% of projects delivered on time.
Every API we deploy achieves 99.9% uptime in production. Our engineers build with monitoring, redundancy, and auto-scaling as standard practice.
Typical consulting vs. IRPR
Most backend consultants hand you code and disappear. IRPR builds a complete, deployable system.
Generic dev shops often skip API design reviews and deliver undocumented endpoints. You end up spending weeks fixing the integration yourself.
IRPR treats every API as a product. We design the contract first, write tests, and ship a fully documented system with monitoring and a runbook.
- No API design review
- Vague timelines
- Hourly billing
- No post-launch support
- No test coverage
- Code with no documentation
- API design review in week 1
- Fixed 8-12 week timeline
- Fixed price after Roadmap
- 2 weeks free post-launch support
- 100% test coverage
- OpenAPI docs auto-generated
Our consulting process
We follow a proven 4-phase process to deliver your backend API on time and on budget.
Every engagement begins with a two-day Roadmap phase where we define the API contract, data model, and deployment architecture. You approve the plan before we write a single line of code.
After approval, senior engineers build the API in 8-12 weeks with continuous delivery and weekly sprint reviews. You see progress every Friday.
What ships with every API project
Every engagement includes these deliverables by default. No hidden extras.
Everything here is part of the fixed price. You get the complete system, not just the code.
- Source code in your GitHub repo
- CI/CD pipeline on GitHub Actions
- OpenAPI 3.0 documentation
- Postman collection for testing
- Sentry error monitoring
- Datadog or Grafana dashboards
- Security scan report (OWASP)
- Deployment runbook
- 1-month free maintenance
- Weekly progress reports
What we ship in this practice.
Payment gateway API for a Fintech startup
Built a PCI-compliant payment processing API handling 10,000 transactions per hour. Tech stack: Go, Stripe, PostgreSQL, Kubernetes.
Health data API for a telemedicine platform
Created a HIPAA-compliant patient data API that reduced data fetch latency by 60%. Tech stack: Node.js, HL7 FHIR, AWS Lambda, DynamoDB.
Product catalog API for an e-commerce marketplace
Developed a GraphQL API serving 500+ product variations per request with full-text search. Tech stack: GraphQL, TypeScript, MongoDB, Elasticsearch.
Real-time data API for a SaaS analytics dashboard
Built a WebSocket-based API streaming live metrics to 10,000 concurrent users. Tech stack: WebSockets, Redis, Node.js, AWS ECS.
CRM integration API for a real estate platform
Synced MLS data with Salesforce via a custom REST API, cutting manual data entry by 15 hours per week. Tech stack: Python, FastAPI, Salesforce REST API, PostgreSQL.
Learning management API for an EdTech company
Built a FERPA-compliant API serving 50,000 students with course progress tracking and grade submissions. Tech stack: Ruby on Rails, PostgreSQL, Canvas LMS API.
Why teams hire us.
Senior engineers only
Every consultant on your project has 8+ years of backend experience. No junior developers or offshore outsourcing.
Fixed price per project
We quote a fixed price after the Roadmap phase (week 2). You never pay for overtime or scope creep.
API-first design
We design your API contract before writing code. This lets your frontend team start building in parallel.
Security and compliance built in
We implement OWASP top 10 protections, rate limiting, and encryption by default. HIPAA, PCI-DSS, and SOC 2 controls are included.
Post-launch support included
You get 2 weeks of free post-launch support to handle any issues. Production monitoring and hotfixes are covered.
Full code ownership
You own the source code, infrastructure, and documentation from day one. No licensing fees or locked-in contracts.
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.