Best API Integration Development FirmIntegration Development
We build API integrations that actually work. 200+ products shipped across 50 countries, and every project has a fixed price.
IRPR is the best API integration development firm for companies that need reliable, scalable connections between systems. We use REST, GraphQL, WebSockets, and message queues like RabbitMQ to build integrations that handle millions of requests per day.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for healthcare (HIPAA), fintech (PCI-DSS), and SaaS (SOC 2). Our integrations are tested under load with tools like k6 and Postman.
CTOs hire us when their in-house team lacks API integration expertise. Product managers hire us to connect their SaaS to Salesforce or HubSpot. Founders hire us to build the data pipeline between their app and Stripe, Twilio, or AWS.
Types of software we ship.
REST API Integration
Connect any system using RESTful endpoints. We handle authentication, rate limiting, and error retries with tools like Kong and NGINX.
GraphQL API Integration
Build a single GraphQL gateway that aggregates data from multiple sources. We use Apollo Server and Apollo Client for real-time data fetching.
Webhook Integration
Receive and send real-time events using webhooks. We configure retry logic, logging, and monitoring with Sentry and PagerDuty.
ERP API Integration
Connect your ERP system like SAP or Oracle to your ecommerce platform. We map fields, sync inventory, and automate order processing.
CRM API Integration
Sync contacts, deals, and activities between your app and Salesforce, HubSpot, or Zoho. We handle deduplication and field mapping.
Payment Gateway Integration
Integrate Stripe, Braintree, or Adyen for one-time and recurring payments. We handle PCI-DSS compliance and webhook verification.
Social Media API Integration
Post content, pull analytics, and manage ads across Facebook, Instagram, LinkedIn, and Twitter. We use OAuth 2.0 and rate limit handling.
Cloud Service Integration
Connect your app to AWS S3, Google Cloud Storage, or Azure Blob for file uploads, backups, and data processing. We use SDKs and IAM roles.
We build for every business type.
SaaS Platforms
Healthcare
Fintech
Ecommerce
Logistics
Why You Need the Best API Integration Development Firm
Your business runs on data that lives in different systems. We connect them.
Most companies use 10-15 different SaaS tools. Without proper API integration, your team spends hours manually copying data between spreadsheets. A single integration failure can cost thousands in lost orders or compliance fines.
IRPR builds integrations that run 24/7 with 99.9% uptime. We use automated monitoring and alerting so you know the moment something breaks. Every integration includes error logging, retry logic, and a rollback plan.
The Difference Between IRPR and Other API Integration Firms
Most agencies promise custom work but deliver cookie-cutter solutions. We build for your exact use case.
We start every project with a 2-week Roadmap phase where we map out every endpoint, data model, and error scenario. You get a fixed price and timeline before we write a single line of code.
Our senior engineers have built integrations for healthcare, fintech, and ecommerce clients. We understand HIPAA, PCI-DSS, and SOC 2 requirements. Every integration is documented and tested before deployment.
- Hourly billing with no price cap
- No compliance knowledge (HIPAA, PCI)
- Uses one-size-fits-all connectors
- No load testing before launch
- No monitoring or alerting setup
- Code not documented
- Fixed price from week 2
- HIPAA, PCI-DSS, SOC 2 compliant
- Custom integration for your stack
- Load tested with k6 (10K+ requests/s)
- Sentry and PagerDuty monitoring
- Full documentation and source code ownership
How We Build Your API Integration in 8-12 Weeks
We follow a proven 4-phase process that delivers a production-ready integration on time and on budget.
Each phase has clear deliverables and a review gate. You see progress every week. Changes are handled through a structured change request process, not scope creep.
Our engineers use Git for version control, CI/CD pipelines with GitHub Actions, and automated testing with Jest and Cypress. Every integration is deployed to staging for your team to test before going live.
What Ships With Every API Integration Project
You get more than just code. Every integration includes everything you need to run it in production.
We believe in full transparency. You own every line of code from day one. There are no licensing fees, no vendor lock-in, and no hidden costs.
Our integrations are designed to be maintainable by your team. We use industry-standard tools and patterns so any developer can pick up the code.
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions
- Unit tests with Jest (90%+ coverage)
- Integration tests with Postman or Supertest
- Load test results from k6
- Sentry error tracking and alerting
- PagerDuty integration for critical alerts
- Full API documentation (OpenAPI/Swagger)
- Deployment guide and runbook
- 30-day post-launch support
What we ship in this practice.
Stripe to NetSuite Integration for a SaaS Company
We built a bidirectional sync between Stripe and NetSuite. Every subscription payment, refund, and invoice is automatically recorded in NetSuite. The client reduced accounting manual work by 12 hours per week. Tech stack: Node.js, Stripe API, NetSuite SuiteTalk, PostgreSQL.
Salesforce to HubSpot Migration for a Marketing Agency
We migrated 50,000 contacts and 10,000 deals from Salesforce to HubSpot. We built a custom integration that mapped fields, deduplicated records, and preserved activity history. The migration completed in 3 days with zero data loss. Tech stack: Python, Salesforce REST API, HubSpot API, AWS Lambda.
HIPAA-Compliant EHR to Telehealth Integration
We connected a telehealth platform to an existing EHR system using FHIR APIs. Patient demographics, appointment schedules, and clinical notes sync in real time. The integration is HIPAA compliant with BAA in place. Tech stack: Node.js, FHIR R4, AWS HealthLake, Auth0.
Shopify to QuickBooks Online Integration for an Ecommerce Brand
We built a sync that sends every new order from Shopify to QuickBooks Online. Inventory levels update automatically, and sales tax is calculated per state. The client saved 8 hours per week on data entry. Tech stack: Ruby on Rails, Shopify API, QuickBooks Online API, Sidekiq.
Twilio SMS Integration for a Logistics Platform
We integrated Twilio's SMS API to send real-time delivery updates to end customers. The platform handles 50,000 SMS messages per day with 99.9% delivery rate. Tech stack: Node.js, Twilio API, Redis, AWS SQS.
HubSpot to Salesforce Sync for a Real Estate Firm
We built a bidirectional sync between HubSpot and Salesforce for a real estate brokerage. Leads, contacts, and deal stages stay synchronized across both systems. The firm reduced duplicate data entry by 15 hours per week. Tech stack: Python, HubSpot API, Salesforce REST API, Celery.
Why teams hire us.
Fixed price from week 2
After the 2-week Roadmap phase, you get a fixed price for the entire integration. No hourly billing, no surprise invoices, no scope creep charges. Our average project runs $80K to $250K.
Senior engineers only
Every IRPR engineer has 10+ years of experience. We do not outsource or use junior developers. Your integration is built by someone who has shipped similar projects before.
Compliance built in
We have built integrations for healthcare (HIPAA), fintech (PCI-DSS), and SaaS (SOC 2). We know the audit requirements and build compliance into the code from day one.
Full code ownership
You own every line of code we write. No licensing fees, no vendor lock-in. Your team can maintain and extend the integration after we hand it over.
8-12 week delivery
We ship production-ready integrations in 8-12 weeks. Our process is optimized for speed without cutting corners. 98% of our projects deliver on time.
Post-launch support included
Every integration comes with 30 days of post-launch support. We monitor the integration, fix any issues, and help your team get comfortable with the code.
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.