Senior Backend API Development PartnerAPI Development
We build production-grade APIs that handle millions of requests. Fixed price, delivered in 8 to 12 weeks.
IRPR is a senior backend API development partner for companies that need reliable, scalable APIs built by experienced engineers. We use Node.js, Python, Go, and Rust to design RESTful and GraphQL APIs that power web apps, mobile apps, and microservices.
Every project ships in 8 to 12 weeks with a fixed price starting at $80K for a complete API backend. We handle compliance out of the box — HIPAA for healthcare, PCI-DSS for fintech, SOC 2 for SaaS. You get full ownership of the source code, CI/CD pipelines, and deployment playbooks.
We work with CTOs who need to launch a new product without a dedicated backend team, engineering leads scaling an existing platform, startup founders building their first production-grade API, and product owners integrating third-party services like Stripe, Salesforce, or Twilio.
Types of software we ship.
RESTful API development
Build endpoints that follow OpenAPI 3.0 spec. Includes Swagger docs, rate limiting, and JWT auth. Deployed on AWS ECS.
GraphQL API development
Schema-first design with Apollo Server. Handles nested queries, subscriptions, and federation across services.
Microservices API architecture
Decoupled services communicating via gRPC or message queues. Each service has its own database and CI/CD pipeline.
Third-party API integration
Connect your app to Stripe, Salesforce, HubSpot, Twilio, SendGrid, or any custom REST/SOAP endpoint. Includes error handling and retry logic.
Webhook and event-driven APIs
Build webhook receivers and event streams using Kafka or AWS EventBridge. Reliable delivery with idempotency keys.
API gateway and proxy
Centralize authentication, rate limiting, caching, and logging behind a Kong or AWS API Gateway layer. Supports custom plugins.
Serverless API backends
Lambda functions triggered by API Gateway. Pay per request, auto-scale, with no servers to manage. Built with AWS CDK.
Internal API for B2B platforms
Private APIs with RBAC, audit logging, and usage analytics. Used by partner integrations and internal microfrontends.
We build for every business type.
Fintech companies
Healthcare and telehealth
SaaS and enterprise platforms
Ecommerce and marketplaces
Logistics and supply chain
Why you need a senior backend API development partner
An API is the backbone of every modern product — a shaky backend means broken user experiences and costly rewrites.
Most API projects fail because the team lacks senior engineers who understand caching, idempotency, and error handling. IRPR assigns only senior developers with 10+ years of experience. We ship production-grade code from day one with automated tests, monitoring, and documentation.
We have built over 200 APIs across 50 countries. Our clients range from fintech startups processing $10M+ per month to healthcare platforms handling 1 million patient records. Every API we build is designed for scale — horizontal scaling, connection pooling, and async workers are standard.
The difference between generic developers and a senior partner
Not all API development teams deliver the same quality. Here is how we compare.
Generic shops often assign junior engineers who learn on your time. They skip testing, ignore security, and deliver spaghetti code that breaks under load. IRPR assigns only senior engineers with a proven track record. Every API has a dedicated tech lead who writes the architecture document before a single line of code.
Our fixed-price model means you know the cost upfront. Budgeting is predictable. No hourly creep, no surprise invoices. We give you a detailed roadmap after a 2-week discovery phase, and we stick to it.
- Junior or mixed-level teams
- Hourly billing with no cap
- No API architecture document
- No monitoring or alerting
- No security audit
- Code ownership unclear
- Senior engineers (10+ yrs)
- Fixed price from $80K
- Architecture doc in week 2
- Datadog + Sentry from day one
- OWASP + HIPAA/PCI checks
- Full source code ownership
Our process to build your backend API
We follow a structured four-phase approach to deliver a production-ready API in 8 to 12 weeks.
Every project starts with a 2-week discovery phase where we map out your requirements, user flows, and data model. We deliver a roadmap with wireframes, API endpoints, and a fixed price. No guesswork.
Then we build in 2-week sprints. You see working endpoints every 14 days. We deploy to a staging environment where you can test with real data. Changes are fast and low-risk.
What ships with every backend API project
Every delivery includes more than just code. These are the artifacts your team needs to maintain and scale the API.
We ship everything your engineering team needs to run the API independently. No black boxes. No handover meetings that leave you guessing. You get the full stack — from infrastructure as code to error tracking.
All deliverables are stored in your own Git repository. Our team stays on for a 2-week warranty period to fix any issues and answer questions.
- Full source code in your GitHub, GitLab, or Bitbucket repo
- CI/CD pipeline with GitHub Actions or GitLab CI
- Infrastructure as code using Terraform or AWS CDK
- Datadog or Grafana dashboards for API monitoring
- Sentry error tracking with alerts
- API documentation in OpenAPI 3.0 format
- Postman collection for endpoint testing
- Security scan report (OWASP ZAP or SonarQube)
- Deployment playbook with rollback procedure
- One year of bug fixes included
What we ship in this practice.
Payment processing API for a fintech startup
Built a RESTful API that handles 50,000 transactions per day with Stripe Connect. Used Node.js, PostgreSQL, and Redis. Reduced chargeback rate by 40% through custom fraud scoring.
Patient data exchange API for a telehealth platform
Designed a HIPAA-compliant FHIR API that integrates with Epic and Cerner. Processed 10,000 patient records daily. Achieved 99.99% uptime with AWS HealthLake.
Multi-tenant SaaS backend for a project management tool
Created a GraphQL API with row-level security and usage billing. Used Apollo Server, Prisma, and CockroachDB. Handles 200,000 queries per minute across 5,000 tenants.
Order management API for an ecommerce marketplace
Built an event-driven API using Kafka and FastAPI. Integrated with 10+ shipping carriers. Reduced order processing time from 8 minutes to 5 seconds.
Real-time asset tracking API for a logistics company
Developed a WebSocket-based API that streams GPS coordinates from 10,000 trucks. Used Go, Redis Streams, and TimescaleDB. Cut report generation from 5 minutes to 10 seconds.
Content management API for a media publisher
Delivered a headless CMS API with GraphQL and WebDAV support. Used Node.js, Elasticsearch, and AWS S3. Supported 1 million concurrent readers during breaking news events.
Why teams hire us.
Senior engineers only, no juniors
Every developer on your project has 10+ years of experience building APIs. We do not outsource to junior teams. You talk directly to the senior engineer writing your code.
Fixed price from day one
After a 2-week discovery phase, you get a fixed quote. No hourly billing, no surprise invoices. The price covers everything — design, development, testing, deployment, and documentation.
Own your source code fully
We write all code in your Git repository from the first commit. You control the repo, the licenses, and the deployment. There is no vendor lock-in.
Built for compliance from the start
We bake HIPAA, PCI-DSS, and SOC 2 compliance into the architecture. Our team has passed 12 third-party compliance audits. We configure encryption, logging, and access controls from sprint one.
Proven with 200+ products across 50 countries
We have shipped production APIs for clients in fintech, healthcare, SaaS, and ecommerce. Our APIs handle $10M+ monthly transactions and 1M+ users without breaking.
Continuous delivery every 2 weeks
You see working, deployable endpoints every 14 days. No long wait for a big reveal. You can change requirements during the project without derailing the timeline.
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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