The Best API Integration Development Agency for Your BusinessAPI Integration
We build secure, scalable API integrations that connect your tools and data. Get a custom solution in 8-12 weeks with fixed pricing.
IRPR is an API integration development agency that builds custom connections between your software systems. We work with REST APIs, GraphQL, SOAP, and webhooks to synchronize data across CRMs, ERPs, payment gateways, and more.
Every project starts with a 2-week Roadmap phase where we define the integration scope. Typical delivery is 8-12 weeks for an MVP, with fixed pricing ranging from 80K to 250K depending on complexity. We build for compliance standards like HIPAA, PCI-DSS, and SOC 2.
We work with CTOs at Series A startups who need to connect Stripe to NetSuite. We help VP of Engineering at healthcare companies integrate Epic with lab systems. And we support product managers at ecommerce brands who want real-time inventory sync between Shopify and their warehouse.
Types of software we ship.
Payment Gateway Integration
Connect your app to Stripe, Braintree, or Adyen. We handle idempotency, webhooks, and PCI-DSS compliance.
CRM Integration
Sync leads, contacts, and deals between Salesforce, HubSpot, Zoho, and your custom app. Bidirectional updates with conflict resolution.
ERP Integration
Integrate NetSuite, SAP, or Microsoft Dynamics with your ecommerce platform. Real-time order, inventory, and financial data sync.
EHR Integration
Connect your healthcare platform to Epic, Cerner, or Athenahealth. HL7/FHIR compliant with HIPAA security.
Marketing Automation Integration
Unify customer data across Mailchimp, Klaviyo, Marketo, and HubSpot. Build custom audience segments and trigger campaigns.
Logistics & Shipping API
Integrate FedEx, UPS, DHL, and ShipStation to automate label generation, tracking, and rate calculations.
Social Media API Integration
Pull analytics, publish content, and manage ads via Facebook, LinkedIn, Twitter, and TikTok APIs.
Data Warehouse Integration
Stream data from multiple sources into Snowflake, BigQuery, or Redshift. Build ETL pipelines with Apache Airflow.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics
API Integration by the Numbers
Our track record proves we deliver reliable, scalable integrations.
We have built over 200 API integrations across 50 countries. Our team of senior engineers ensures every connection is secure and maintainable.
Our integrations achieve 99.9% uptime and we deliver 98% of projects on time and on budget. We use automated testing and monitoring to catch issues before they reach production.
Why IRPR Beats Generic Dev Shops
Most agencies treat integrations as an afterthought. We treat them as our core.
Generic development shops often write fragile, one-off scripts that break when APIs change. They don't design for error handling, rate limiting, or idempotency.
IRPR builds production-grade integrations with retry logic, monitoring dashboards, and comprehensive logging. We document every endpoint and ship integration tests as part of the codebase.
- No dedicated integration engineers
- Brittle point-to-point connections
- No rate limit handling
- No automated testing for API changes
- No monitoring or alerting
- One-size-fits-all pricing per hour
- Senior engineers with API specialization
- Scalable event-driven architectures
- Built-in retry and circuit breaker pattern
- Integration test suite with every project
- Real-time dashboards with Sentry and Datadog
- Fixed price with clear scope from week 2
How We Build Your API Integration
Our 4-phase process ensures no surprises.
Phase one is the Roadmap. In two weeks we audit your systems, map data flows, and produce a fixed-price contract.
Phase two is the Core Build. We stand up a staging environment, connect to your test endpoints, and start syncing real data.
What Ships When We Integrate Your APIs
Every integration project includes these deliverables by default.
No hidden handoffs. You get everything you need to maintain and extend the integration yourself.
- Source code in a private GitHub repository
- CI/CD pipeline with GitHub Actions for automated deploys
- Postman or Bruno collection with all endpoints documented
- Integration tests covering happy path and error scenarios
- Data flow diagrams and schema documentation
- Sentry or Datadog monitoring with alerts on failures
- Rate limit handling and retry logic for third-party APIs
- Audit log of all data syncs for compliance
- One month of post-launch support and bug fixes
- Knowledge transfer session with your team
What we ship in this practice.
Stripe to NetSuite Payment Sync
Built a real-time payment reconciliation pipeline for a Series B fintech company. Syncs over 10,000 transactions daily, reducing manual accounting work by 15 hours per week. Tech stack: Node.js, Stripe API, NetSuite SOAP API, Bull queue, PostgreSQL.
Epic EHR to Lab System Integration
Connected a telemedicine platform with Quest Diagnostics via HL7 FHIR. Eliminated manual lab order entry, cutting processing time from 45 minutes to 2 minutes per order. Tech stack: Python, FHIR API, HL7 v2, Docker, AWS Lambda.
Shopify to 3PL Warehouse Sync
Integrated ShipStation and Fishbowl Inventory for a multi-channel retailer. Reduced inventory overselling to zero and improved order fulfillment speed by 40%. Tech stack: Node.js, Shopify REST, ShipStation API, Redis, AWS SQS.
HubSpot to Salesforce Bidirectional Sync
Created a custom sync engine for a B2B SaaS client that needed to keep leads and deals in sync between two CRMs. Achieved 99.9% sync accuracy with conflict resolution. Tech stack: Python, HubSpot API, Salesforce REST API, Celery, MongoDB.
QuickBooks to Stripe Payment Integration
For an accounting SaaS, we built a two-way sync of payments and invoices between QuickBooks Online and Stripe. Eliminated 20 hours of manual data entry per week for their users. Tech stack: Node.js, OAuth 2.0, QuickBooks API, Stripe API, PostgreSQL.
Slack to Jira Workflow Integration
Automated ticket creation from Slack commands for a remote engineering team. Reduced time-to-log from 5 minutes to 10 seconds per issue. Tech stack: Express.js, Slack Bolt SDK, Jira REST API, Prisma, PostgreSQL.
Why teams hire us.
Fixed Price, Not Hourly
We give you a fixed price after the 2-week Roadmap phase. No hourly billing, no time-tracking, no surprise invoices. Average project cost is 80K to 250K.
Senior Engineers Only
Our team has an average of 10+ years of engineering experience. Every integration is built by a lead engineer who can debug any API, not a junior following a script.
Compliance Built In
We ship integrations that meet HIPAA, PCI-DSS, and SOC 2 standards. Our healthcare integrations use FHIR and HL7v2. Our fintech integrations handle card data securely with tokenization.
8-12 Week MVPs
We deliver a working integration in 8-12 weeks. That's faster than hiring an in-house team or waiting for a legacy agency. We focus on the core sync first, then iterate.
Own Your Code
You own the full source code from day one. No licensing fees, no vendor lock-in. We hand over the repo, CI/CD pipeline, and documentation so you can extend it yourself.
Proven Track Record
We have shipped 200+ integration projects for clients in 50 countries. Our on-time delivery rate is 98% and our integrations maintain 99.9% uptime.
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.