Affordable Custom API Development CompanyCustom API
Build APIs that connect your systems without blowing your budget. Fixed pricing from $80K, delivered in 12 weeks.
IRPR builds custom APIs for B2B SaaS platforms, healthcare data exchanges, and ecommerce backends. We use Express.js, FastAPI, Apollo GraphQL, and PostgreSQL to create APIs that handle thousands of requests per second.
Every project ships with a fixed price of $80K to $250K depending on scope. MVPs go live in 12 weeks. APIs are built to HIPAA, PCI-DSS, or SOC 2 standards depending on your industry.
CTOs who need a scalable integration platform, product managers launching a new API-first product, and compliance officers who require auditable data pipelines all hire IRPR. We give you senior engineers who have built APIs for fintech, healthcare, and logistics.
Types of software we ship.
REST API development
Stateless endpoints with JSON responses. Use Express.js, Django REST Framework, or FastAPI. Includes OpenAPI documentation.
GraphQL API development
Single endpoint with flexible queries. Use Apollo Server or GraphQL Yoga. Built for frontend teams that need fast iteration.
Third-party API integration
Connect Stripe, Salesforce, HubSpot, or Twilio. Includes webhook handlers and rate limiting. Delivered with Postman collections.
Microservices API gateway
Central gateway for 5-20 internal services. Use Kong or NGINX. Includes authentication, logging, and throttling.
Data processing API
Streaming or batch endpoints for ETL pipelines. Use Apache Kafka or RabbitMQ. Ships with monitoring via Prometheus.
Authentication API
OAuth 2.0, SAML, or JWT-based auth. Supports SSO with Okta or Auth0. Audit logs included.
Real-time API (WebSocket)
Bidirectional messaging for chat, live dashboards, or IoT. Use Socket.io or WebSocket API. Scales with Redis pub/sub.
Machine learning API
Serve models via inference endpoints. Use FastAPI with TensorFlow or PyTorch. Includes caching and batch prediction.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics
Why Choose an Affordable Custom API Development Company
IRPR builds APIs that connect your existing tools and scale to new users without expensive rewrites.
Most agencies charge hourly and add 30-50% of project cost in management overhead. IRPR quotes a fixed price after a 2-week Roadmap phase. You know the total cost before a single line of code is written. Our senior engineers work directly with your team, no middlemen.
We have shipped 200+ API integrations for companies across healthcare, fintech, and logistics. One client reduced their data sync time from 4 hours to 12 minutes after we rebuilt their REST API. Another processed 1 million API calls per day with 99.9% uptime on a $95K project.
Generic Dev Shop vs. IRPR: The Real Difference
Not all API development companies deliver the same quality. Here is how IRPR compares with generic offshore firms.
Generic dev shops rely on junior developers with little domain knowledge. They send project managers who bill for status meetings. You pay hourly for their learning curve.
IRPR assigns senior engineers (8+ years experience) who build your API end to end. They write tests, deploy to AWS, and hand over full ownership. No project managers, no hourly bills.
- junior developers with less than 3 years experience
- hourly billing with no cost cap
- delays from scope creep
- no compliance knowledge (HIPAA, PCI, SOC 2)
- delivered with minimal tests
- code ownership unclear
- senior engineers with 8+ years experience
- fixed price from $80K
- 12-week delivery guarantee
- built to HIPAA, PCI, SOC 2 from day one
- full test coverage (unit, integration, e2e)
- you own all source code and IP
How IRPR Builds Your Custom API: 4 Phases
Every API project follows a repeatable 4-phase process that eliminates guesswork and ensures on-time delivery.
Phase 1 is a 2-week Roadmap where we define endpoints, data models, and authentication. You approve the plan before we code.
Phase 2 is MVP build: we deliver a production-ready API with 80% of the features in 10 weeks. Phase 3 is hardening: load testing, security audit, and documentation. Phase 4 is release with deployment scripts.
What Ships with Your Custom API
Every project includes more than just endpoints. You get a complete production-ready system.
IRPR delivers more than code. We ship documentation, deployment scripts, monitoring dashboards, and a security report. Your team can start using the API on day one.
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions and Docker
- Postman collection with example requests
- OpenAPI (Swagger) documentation hosted on your domain
- Cloud deployment scripts for AWS ECS or Lambda
- CloudWatch or Datadog monitoring dashboard
- Load test results from k6 with 95th percentile latencies
- Security report from OWASP ZAP scan
- Sentry error tracking integration
- 1-hour handoff call with your engineering team
What we ship in this practice.
Patient data exchange API for a telehealth startup
We built a HIPAA-compliant REST API with FHIR resources using FastAPI and PostgreSQL. The client reduced manual data entry by 8 hours per week and onboarded 50 new clinics in 3 months.
Payment gateway aggregation API for a fintech
Built a single API that abstracts Stripe, Adyen, and Square. Used Express.js and Redis for caching. Processed 10,000 transactions per day with 99.95% uptime.
Inventory sync API for an ecommerce brand
Created a GraphQL API that syncs inventory across Shopify, Amazon, and warehouse ERP. Used Apollo Server and Kafka. Cut stock discrepancies from 5% to 0.2%.
CRM integration API for a B2B SaaS company
Built a bidirectional sync API between their app and HubSpot using REST webhooks. Used Node.js and MongoDB. Eliminated 15 hours per week of manual data entry.
Route optimization API for a logistics firm
Developed a WebSocket API for real-time driver tracking and route updates. Used FastAPI and PostgreSQL with PostGIS. Reduced fuel costs by 12% on 300 delivery trucks.
Student data API for an edtech platform
Built a FERPA-compliant REST API for grade reporting and enrollment. Used Django REST Framework and AWS RDS. Handled 500,000 student records with sub-200ms response times.
Why teams hire us.
Fixed price, not per-hour billing
Every project gets a fixed quote after the Roadmap phase. No hourly invoices, no surprise charges. You know the cost before we build a thing.
Senior engineers, no juniors
Every IRPR engineer has 8+ years of experience. No farmed-out offshore teams. The person you talk to in the discovery call builds your API.
12-week delivery, not open-ended
We ship MVPs in 12 weeks. If it takes longer, we tell you in week 2 and update the timeline. 98% of projects launch on schedule.
Compliance built in from day one
Healthcare APIs get HIPAA controls. Fintech APIs get PCI-DSS. We handle encryption, audit logs, and access controls. You pass audits faster.
Full code ownership, no lock-in
You own all source code, documentation, and deployment scripts. Migrate to any team or cloud provider without paying IRPR again.
You talk to engineers, not sales
Your discovery call is with a senior engineer who has built 50+ APIs. No account managers. No fluff. Just technical answers.
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.