API Integration Development ServicesDevelopment Services
We build custom API connectors and middleware for your stack. Ship in 8-12 weeks with fixed pricing.
IRPR builds custom API integration solutions using Node.js, Python, and Go. We connect your systems with third-party APIs including Salesforce, Stripe, and AWS.
We ship production-ready API integrations in 8-12 weeks. Pricing ranges from $80K to $250K depending on complexity. All projects include full documentation, automated testing, and 99.9% uptime SLA.
Who hires us: CTOs needing to unify legacy systems with modern APIs, product managers launching SaaS platforms with multiple integrations, enterprise architects requiring HIPAA or PCI-DSS compliant data pipelines, and startup founders building MVPs with third-party API dependencies.
Types of software we ship.
REST API Integration
Build custom RESTful connectors for CRUD operations with OAuth 2.0 authentication and rate limiting.
SOAP API Integration
Legacy system integration using XML-based SOAP protocols and WSDL parsing for enterprise systems.
GraphQL API Integration
Unified data fetching with GraphQL gateways and schema stitching across multiple backends.
Webhook Integration
Real-time event-driven data sync using webhooks with retry logic and dead-letter queues.
Middleware Development
Custom middleware layers to transform, route, cache, and authenticate API requests.
API Gateway Setup
Centralized API management with rate limiting, authentication, logging, and monitoring.
Data Pipeline Integration
Batch and streaming data pipelines using Apache Kafka and Airflow for large-scale data movement.
ETL API Connectors
Extract, transform, load connectors for CRM, ERP, and marketing platforms with schema mapping.
We build for every business type.
E-commerce
Healthcare
Fintech
SaaS
Logistics
Why custom API integration development matters
Off-the-shelf connectors rarely fit your exact data model or security requirements.
Generic API integration tools often break when your business logic changes. We build connectors that adapt to your schema, handle rate limits, and log every transaction.
Our team has delivered over 200 API integrations across 50 countries. Each project includes automated monitoring, error handling, and a dedicated support channel.
The difference between generic dev shops and IRPR
Most agencies treat API integration as a side task. We treat it as the core product.
Generic shops use copy-paste code that fails under load. They skip error handling and leave you with brittle integrations.
IRPR writes production-grade connectors with retries, logging, and monitoring from day one. Every integration includes unit tests, integration tests, and a runbook.
- No dedicated API architect on staff
- Uses third-party middleware tools that limit customization
- Delivers without documentation or runbooks
- No SLA for uptime or response times
- Charges hourly, leading to scope creep
- One-size-fits-all connectors that break with schema changes
- Senior engineers with 10+ years API experience
- Custom code in Node.js, Python, or Go
- Full documentation, Postman collections, and runbooks
- 99.9% uptime SLA with 24/7 monitoring
- Fixed price from $80K, no surprise invoices
- Adaptive connectors that handle schema drift
How we deliver your API integration
From discovery to deployment, our process is transparent and predictable.
We start with a 2-week Roadmap phase where we map your systems, define data flows, and produce a fixed quote.
Then we build the integration in 8-12 weeks, with weekly demos and full access to staging environments.
What ships with your API integration
Every project includes these deliverables by default.
No hidden line items. Everything listed here is included in the fixed price.
- Source code in your private GitHub repo
- CI/CD pipeline with automated tests
- API documentation (OpenAPI/Swagger)
- Postman collection for manual testing
- Error handling with retry and dead-letter queues
- Monitoring dashboards (Datadog or Grafana)
- Uptime alerts via PagerDuty or Slack
- Runbook for on-call engineers
- One-year warranty on code defects
- Dedicated Slack channel with your dev team
What we ship in this practice.
Unified patient data across EHRs
Connected Epic and Cerner APIs to a single patient portal. Reduced duplicate data entry by 12 hours per week. Stack: Node.js, FHIR API, PostgreSQL.
Real-time payment reconciliation
Integrated Stripe and NetSuite via custom middleware. Cut reconciliation time from 2 days to 15 minutes. Stack: Python, Stripe API, NetSuite SOAP.
Multi-carrier shipping automation
Built a unified API layer for FedEx, UPS, and DHL. Reduced shipping errors by 40% and saved $50K/year in chargebacks. Stack: Go, REST APIs, Redis.
CRM-ERP data sync
Synced Salesforce opportunities with SAP order data in real time. Improved quote-to-cash speed by 30%. Stack: Node.js, Salesforce REST, SAP OData.
E-commerce inventory aggregation
Aggregated inventory from Shopify, Amazon, and Walmart APIs into a single dashboard. Reduced overselling by 90%. Stack: Python, GraphQL, PostgreSQL.
Real estate MLS data pipeline
Built an ETL pipeline pulling MLS listings from 12 sources into a custom CRM. Increased listing accuracy from 70% to 99%. Stack: Node.js, Apache Kafka, MongoDB.
Why teams hire us.
Fixed price from day one
We quote a fixed price after a 2-week Roadmap phase. No hourly billing, no surprise invoices. Our average project costs $80K-$250K.
Senior engineers only
Every project is staffed with engineers who have 10+ years of API development experience. We do not outsource to junior developers.
Production-grade code
We write code with automated tests, error handling, and monitoring from the start. Our integrations run at 99.9% uptime across 200+ deployments.
Full code ownership
You own all source code, documentation, and configuration files. No vendor lock-in, no licensing fees.
Compliance built in
We build integrations that meet HIPAA, PCI-DSS, SOC 2, and GDPR requirements. We have delivered compliant integrations for healthcare, fintech, and SaaS clients.
8-12 week delivery
Most integrations ship within 8-12 weeks from kickoff. We use agile sprints with weekly demos so you see progress in real time.
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.