Hire an API Integration Development Firm That ShipsShips
We connect your software to Stripe, Salesforce, Twilio, and 200+ other APIs. 12 weeks from kickoff to your first integration in production.
IRPR is an API integration development firm that builds custom connections between your platform and Stripe, Salesforce, Twilio, HubSpot, NetSuite, and 200+ other APIs. We write the middleware, handle rate limiting, retries, authentication (OAuth 2.0, API keys, JWTs), and deploy on AWS Lambda or EC2.
Every engagement begins with a fixed-price Roadmap phase (2 weeks) and continues at a locked project price. Most integrations ship in 8-12 weeks. Typical budgets range from $80K to $250K. We sign BAAs for HIPAA clients and follow PCI-DSS for payment data.
Founders who need their SaaS to talk to QuickBooks or Xero hire us. CTOs at healthcare companies who need HL7 FHIR integration with Epic or Cerner hire us. VPs of Engineering at ecommerce brands who need Shopify, Amazon, and ERP sync hire us. Product leaders at fintech startups who need Plaid, Stripe, and Yodlee integrations hire us.
Types of software we ship.
Stripe Integration
Connect Stripe to your ERP, CRM, or accounting system. Sync payments, invoices, and subscription data automatically.
Salesforce Integration
Push leads, contacts, and opportunities from your app into Salesforce via REST API or Bulk API 2.0.
Twilio Integration
Add SMS, voice, and WhatsApp capabilities to your platform using Twilio's Programmable Messaging API.
HubSpot Integration
Sync contacts, deals, and custom properties between your app and HubSpot CRM using their OAuth 2.0 API.
QuickBooks Integration
Automate invoice creation, expense tracking, and bank feed imports via QuickBooks Online API (OAuth 2.0).
NetSuite Integration
Connect your platform to NetSuite for order management, inventory sync, and financial data using SuiteTalk.
HL7 FHIR Integration
Exchange patient data with Epic, Cerner, or Athenahealth using HL7 FHIR R4 APIs. HIPAA compliant.
Plaid Integration
Link bank accounts, validate transactions, and verify balances using Plaid's APIs. SOC 2 certified.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Enterprise
API Integration Development Firm Metrics
We have shipped API integrations for 200+ products across 50 countries since 2016.
Every integration project at IRPR starts with a 2-week Roadmap phase. We map endpoints, define data models, design error handling, and produce a fixed price for the build phase. That fixed price never changes, regardless of how many endpoints we hit.
Our API integrations average 12 weeks from kickoff to production. We guarantee 99.9% uptime for any integration we deploy and monitor. If an endpoint changes or a vendor deprecates an API version, we update your integration within 48 hours.
Generic Dev Shop vs IRPR API Integration Development Firm
Not all API integration development firms deliver the same quality. Here is the difference.
A generic development shop might connect two APIs in a weekend and call it done. But when a vendor API changes, the integration breaks. Or when you need OAuth 2.0 token refresh, retry logic, and error logging, the code is gone. We build integrations that survive production traffic.
IRPR writes every integration as a standalone service with its own repository, CI/CD pipeline, and monitoring. We use AWS Lambda for serverless integrations (under $50/month) or EC2 for high-throughput needs. Every endpoint is documented and each integration ships with automated tests.
- No dedicated integration architect
- No retry or backoff logic
- No monitoring or alerting
- No documentation
- No ownership after handoff
- Hourly billing with scope creep
- Senior engineers only (8+ years each)
- Retry with exponential backoff built in
- Datadog monitoring and Sentry alerts
- Swagger/OpenAPI docs for every integration
- 48-hour emergency updates for broken APIs
- Fixed price from day one
Our API Integration Development Process
We follow a 4-phase process that gets your first integration live in 12 weeks.
Phase 1 is the Roadmap: 2 weeks, fixed price, we map every endpoint, define data mapping, choose the auth method (OAuth 2.0, API keys, JWT), and produce a build-phase quote. Phase 2 is Build: 8-10 weeks of coding, testing, and deploying the integration service.
Phase 3 is Release: we deploy to your staging environment, run integration tests, and monitor for 48 hours before going to production. Phase 4 is Support: 30 days of post-launch monitoring with priority email support. We also offer ongoing maintenance contracts for $2,500/month.
API Integration Deliverables
Every API integration project includes these deliverables by default.
You get everything you need to run and maintain the integration yourself. Every deliverable is listed in the Roadmap document before we start building. No surprises, no hidden fees.
IRPR uses GitHub for source control, GitHub Actions for CI/CD, and Datadog for monitoring. All code is written to production standards with proper error handling, logging, and security measures like environment variable management.
- Source code in your private GitHub repository
- CI/CD pipeline on GitHub Actions or CircleCI
- Swagger/OpenAPI documentation for each endpoint
- Retry logic with exponential backoff and error logging
- OAuth 2.0 token refresh handler (if applicable)
- Rate limit handling with automatic back-pressure
- Data transformation layer for vendor-specific formats
- Automated integration tests (Jest, Mocha, or pytest)
- Deployment scripts for AWS Lambda or EC2 with Terraform
- Sentry error tracking and Datadog monitoring dashboard
What we ship in this practice.
Stripe to NetSuite Integration for a SaaS Company
We built a real-time sync between Stripe and NetSuite that processed 10,000+ invoices per month. The integration used Node.js, AWS Lambda, and the NetSuite SuiteTalk API. It reduced the client's finance team data entry time by 20 hours per week.
Twilio SMS Integration for a Telehealth Platform
We connected Twilio's Programmable SMS API to a patient scheduling platform, enabling automated appointment reminders and two-way patient chat. The integration handled 50,000+ messages per day and cut no-show rates by 35%. Built with Python, Celery, and Redis.
Salesforce to HubSpot Data Sync for a Marketing Agency
We wrote a bidirectional sync between Salesforce and HubSpot using both REST APIs. The integration mapped custom objects, handled deduplication, and synced 250,000+ contacts in under 4 hours. Tech stack: Go, PostgreSQL, and Docker.
Plaid and Stripe Integration for a Fintech Lending Platform
We integrated Plaid's Link API for bank account verification and Stripe Connect for disbursements. The pipeline validated 15,000+ borrowers per month and reduced fraud by 40%. Built with Node.js, AWS Lambda, and Postgres.
QuickBooks to Ecommerce Platform Sync for a Retailer
We built an integration between QuickBooks Online and a custom ecommerce platform that synced orders, inventory, and invoices in real time. The client saved 35 hours of manual data entry per week. Tech stack: Python, FastAPI, and Celery.
HL7 FHIR Integration for a Hospital Network
We connected a custom patient portal to Epic's FHIR R4 API, enabling patients to view lab results and schedule appointments. The integration handled 100,000+ FHIR transactions per day with sub-second latency. HIPAA compliant with signed BAA.
Why teams hire us.
Fixed price, not hourly
Every integration project gets a fixed quote during the Roadmap phase (week 2). No hourly billing. No surprise invoices. Not a single client has paid more than the quoted price in our history.
Senior engineers on every project
We assign 2-3 engineers with 8+ years of experience to every integration. No junior devs. No contractors. Every line of code is written and reviewed by a senior engineer.
48-hour emergency API fixes
When a vendor API changes or breaks, we update your integration within 48 hours. This is included in our 30-day post-launch support and available with our $2,500/month maintenance contract.
HIPAA and PCI-DSS compliance built in
We sign BAAs for healthcare integrations and follow PCI-DSS Level 1 standards for payment data. Our integrations use encryption at rest and in transit, with audit logging for every request.
Full code ownership
You own 100% of the source code, documentation, and infrastructure scripts after the project. No licensing fees. No vendor lock-in. You can take the code and run it anywhere.
98% on-time delivery rate
We have shipped 200+ integration projects on time. Our 12-week average timeline includes the 2-week Roadmap phase. If we miss a deadline, we work for free until it ships.
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.