Best API Integration Development ServicesAPI Integration
We connect your apps with custom API integrations. Your data flows automatically in 8-12 weeks.
IRPR builds custom API integrations that connect your SaaS tools, legacy systems, and third-party services. We use Node.js, Python, and cloud-native middleware like AWS Lambda and Mulesoft to handle thousands of transactions per second.
Every integration ships in 8-12 weeks with a fixed price between $80K and $250K. All code is production-ready, monitored with Datadog, and deployed on your infrastructure. We comply with SOC 2 and PCI-DSS standards.
Our clients are CTOs scaling their SaaS platform who need Salesforce-HubSpot sync, VP of Engineering at ecommerce brands integrating Shopify with ERP, and IT Directors in healthcare connecting EHRs via HL7 FHIR.
Types of software we ship.
Payment Gateway Integration
Connect Stripe, Braintree, or Adyen to your app. We handle webhooks, idempotency, and PCI-DSS compliance.
CRM Integration
Sync data between Salesforce, HubSpot, or Zoho CRM and your platform. Bi-directional, conflict-free, scheduled.
ERP Integration
Integrate SAP, Oracle, or NetSuite with your ecommerce or warehouse systems. Real-time inventory and order sync.
Marketing Automation Integration
Connect Mailchimp, Marketo, or ActiveCampaign. Trigger campaigns based on user behavior in your app.
Shipping and Logistics API Integration
Integrate ShipStation, FedEx, or UPS APIs for real-time rates, tracking, and label generation.
Healthcare API Integration (HL7/FHIR)
Connect EHRs like Epic or Cerner using HL7 v2 and FHIR R4. HIPAA compliant with audit logging.
Social Media API Integration
Post, read, and analyze data from Facebook, Twitter, LinkedIn, and Instagram APIs. Rate-limited and OAuth2.
Custom REST API Development
Build a RESTful API for your product or third-party consumption. Documented with OpenAPI, versioned, and secured.
We build for every business type.
Ecommerce
Healthcare
Fintech
SaaS
Logistics
API integration development by the numbers
We have shipped over 200 API integrations across 50 countries.
Every integration we build goes through a structured process. The result: 98% of projects deliver on time within the quoted price. Our APIs average 99.9% uptime after launch.
Clients from fintech to healthcare trust us with their data. We maintain SOC 2 Type II certification and follow PCI-DSS for payment integrations.
Why choose IRPR for API integration
Not all integration partners are the same. Here is how we differ.
Generic dev shops treat API integration as a side project. They use copy-paste code, ignore error handling, and skip monitoring. That leads to brittle integrations that break when APIs change.
IRPR builds integration as a product. We write idempotent endpoints, implement retry logic with exponential backoff, and set up Datadog dashboards. Every integration is built to scale from day one.
- No dedicated API architect
- Manual error handling
- No rate limit management
- No monitoring or alerts
- One-off code (not reusable)
- No compliance review
- Senior API engineers (average 10yr exp)
- Automated retry and dead-letter queues
- Rate-limiting across all integrations
- Datadog monitoring with PagerDuty alerts
- Reusable integration templates
- SOC 2 and PCI-DSS compliance built in
How we build your API integration
We follow a four-phase process to deliver a reliable integration.
Each phase has clear deliverables. You see working code by week 3. We handle everything from architectural decisions to production deployment.
We use agile sprints with weekly demos, so you see progress every 7 days.
What ships with every API integration
Every project includes these deliverables by default.
Source code in your private GitHub repo. CI/CD pipeline on GitHub Actions. Datadog logs and dashboards. No hidden fees.
Every integration ships with 2 weeks of post-launch support. You can extend support by month with a fixed monthly fee.
- Source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Datadog monitoring and alerting
- API documentation with OpenAPI/Swagger
- Postman collection for testing
- Rate limit handling and retry logic
- Dead-letter queue for failed messages
- 2 weeks of post-launch support
What we ship in this practice.
Salesforce-HubSpot Contact Sync
A B2B SaaS needed to sync leads and contacts between Salesforce and HubSpot. We built a bidirectional integration using Mulesoft Anypoint Platform. Reduced manual data entry by 30 hours per week.
Stripe Payment Gateway for Ecommerce
An ecommerce brand needed to connect their Shopify store to Stripe via custom API. We handled webhooks, idempotency, and PCI-DSS compliance. Payment processing went from 3 seconds to 500ms.
HL7 FHIR Integration for Telehealth
A telehealth platform needed to send patient data from their app to Epic EHR. We implemented HL7 FHIR R4 with SMART on FHIR authorization. Integration passed HIPAA audit with zero findings.
NetSuite ERP Sync for Manufacturing
A manufacturer needed real-time inventory sync between their warehouse system and NetSuite. We built a REST API layer using AWS Lambda and RDS. Inventory updates now happen in under 1 second.
ShipStation Shipping API for Logistics
A third-party logistics company needed to connect their system to ShipStation for label generation and tracking. We integrated the ShipStation API with rate quoting from FedEx and UPS. Reduced shipping label time from 5 minutes to 10 seconds per order.
Custom REST API for a Fintech App
A fintech startup needed a public API for their payment platform. We built a RESTful API with OpenAPI documentation, rate limiting, and OAuth2 authentication. The API launched to 50 beta customers within 6 weeks.
Why teams hire us.
Fixed price from day one
Every API integration project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices. You know the exact cost before we write a line of code.
Senior engineers only, no juniors
Our smallest team has 2 engineers with an average of 10 years experience each. We never outsource or use offshore contractors. Every line of code is written by a senior developer.
98% on-time delivery
We ship on time because we plan in two-week sprints with weekly demos. If we miss a deadline, we extend the project at no extra cost. That happens less than 2% of the time.
Full code ownership
You own all source code, documentation, and infrastructure. We deliver everything in your private GitHub repo. No proprietary frameworks, no hidden licenses.
Built for production from sprint one
We write idempotent endpoints, add retry logic with exponential backoff, and set up monitoring in the first sprint. Your integration is production-ready by week 4.
Compliance built in, not bolted on
We follow SOC 2 controls for all projects. For healthcare we add HIPAA safeguards. For fintech we meet PCI-DSS. Compliance checks happen during development, not after launch.
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.