Expert API Integration Development AgencyAPI Integration
We connect your software to any third party API in 8 to 12 weeks. Fixed price, no surprises.
IRPR is an expert API integration development agency. We build custom connectors between your software and platforms like Stripe, Salesforce, HubSpot, Twilio, and QuickBooks using REST, GraphQL, and webhook architectures. Every integration is designed for reliability and low latency.
A typical API integration project ships in 8 to 12 weeks. Pricing ranges from $80,000 to $250,000 depending on the number of endpoints and data mapping complexity. We handle compliance for healthcare (HIPAA), fintech (PCI-DSS), and SaaS (SOC 2).
We work with CTOs who need to sync customer data across CRM and billing systems. Product managers who want to embed payment processing or messaging features. And founders launching a SaaS MVP that must connect to multiple third party tools from day one.
Types of software we ship.
CRM integration
Sync contacts, deals, and activities between your app and Salesforce, HubSpot, or Zoho. Bi-directional sync with conflict resolution.
Payment gateway integration
Process payments through Stripe, Braintree, or Square. Handle subscriptions, refunds, and recurring billing.
Ecommerce platform integration
Connect your inventory and orders to Shopify, WooCommerce, or Magento. Real time stock updates across channels.
ERP integration
Link your app to SAP, Oracle NetSuite, or Microsoft Dynamics. Automate invoicing, purchase orders, and inventory.
Marketing automation integration
Push leads and events to Mailchimp, Klaviyo, or Marketo. Trigger campaigns based on user actions.
Communication API integration
Add SMS, voice, or email through Twilio, SendGrid, or Vonage. Build notification workflows with delivery tracking.
Data warehouse integration
Load data from your app into Snowflake, BigQuery, or Redshift. Scheduled ETL with schema mapping.
Identity and access integration
Authenticate users via Okta, Auth0, or Azure AD. Support SSO, SAML, and OAuth 2.0 flows.
We build for every business type.
SaaS companies
Ecommerce brands
Healthcare organizations
Fintech and financial services
Logistics and supply chain
API integration projects we deliver
Every integration is built to handle production traffic and scale with your business.
IRPR has shipped over 200 products that rely on third party API integrations. We write custom middleware using Node.js, Python, or Go. Each endpoint is tested for error handling, rate limiting, and data consistency.
We document every integration with OpenAPI specs and provide a Postman collection. You get full source code ownership and a CI/CD pipeline that runs integration tests on every deploy.
Why hire an expert API integration development agency
Generic dev shops treat integration as an afterthought. IRPR treats it as core infrastructure.
Many agencies write fragile point to point code that breaks when the third party API updates. IRPR builds with retry logic, idempotency keys, and circuit breakers. We handle webhook verification and signature validation.
We also monitor every integration in production using Datadog and Sentry. If a downstream API goes down, we detect it and queue retries. Your users never see a failure.
- No dedicated API testing
- Hardcoded API keys in config files
- No rate limit handling
- No webhook retry logic
- No monitoring or alerting
- No documentation
- Automated integration test suite
- Secrets management via AWS Secrets Manager
- Backoff and retry with exponential delay
- Webhook verification and dead letter queues
- Datadog dashboards and Sentry alerts
- OpenAPI specs and Postman collections
How we approach API integration projects
Our process turns an idea into a live integration in 4 phases.
Phase 1 is the Roadmap. We spend week 2 mapping every data field, authentication flow, and error scenario. You get a fixed price quote and a timeline. No changes after sign off.
Phase 2 is Product. We build the integration using your tech stack or ours. Phase 3 is Release with staging and production deployment. Phase 4 is a 30 day warranty.
What ships with every API integration project
You get more than just working code. Every delivery includes production ready infrastructure.
We do not hand over a zip file. You get a fully configured CI/CD pipeline, monitoring, and runbooks. Your team can maintain the integration without calling us.
All code is stored in your GitHub or GitLab repository from day one. We follow your branch strategy and code review process.
- Source code in your repository
- CI/CD pipeline with integration tests
- API documentation (OpenAPI 3.0)
- Postman collection for manual testing
- Datadog dashboards for latency and errors
- Sentry error tracking
- Runbook for common failure scenarios
- Secrets management via AWS Secrets Manager
- Load test results showing throughput limits
- 30 day warranty with bug fixes
What we ship in this practice.
Stripe to NetSuite sync
We built a bi-directional sync between Stripe and NetSuite for a SaaS company. Payments, refunds, and subscription changes update the ERP in real time. Reduced manual data entry by 12 hours per week. Tech stack: Node.js, Stripe API, NetSuite SuiteTalk, PostgreSQL.
Salesforce to Shopify order sync
An ecommerce brand needed orders created in Shopify to appear in Salesforce automatically. We built a webhook based integration that creates contacts, opportunities, and order records. Order processing time dropped from 4 hours to 2 minutes. Tech stack: Python, Shopify API, Salesforce REST API, Celery.
Twilio SMS for patient reminders
A healthcare provider wanted automated SMS reminders for appointments. We integrated Twilio with their EHR system. No show rates decreased by 35 percent. Tech stack: Go, Twilio API, FHIR API, Redis.
HubSpot to Marketo lead routing
A B2B SaaS company needed leads from HubSpot to flow into Marketo for email campaigns. We built a middleware service that maps custom fields and deduplicates contacts. Lead to email time went from 24 hours to under 1 minute. Tech stack: Node.js, HubSpot API, Marketo REST API, MongoDB.
QuickBooks to AWS data lake
A manufacturing firm wanted daily exports from QuickBooks to a Snowflake data warehouse. We built an ETL pipeline that transforms invoices, bills, and journal entries. Financial reporting now runs in 10 seconds instead of 3 hours. Tech stack: Python, QuickBooks API, Snowflake, Airflow.
Okta SSO for a multi tenant app
A real estate platform needed SSO support for property managers. We integrated Okta using SAML and SCIM. User onboarding time dropped from 2 days to 15 minutes. Tech stack: Node.js, Okta API, PostgreSQL, React.
Why teams hire us.
Fixed price, not hourly
Every API integration project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior engineers only
IRPR does not use junior developers or outsource. Every engineer has 8+ years of experience with API design, error handling, and production monitoring. You talk directly to the person building your integration.
Full code ownership
You own all source code, documentation, and infrastructure from day one. There is no license fee, no vendor lock in, no recurring royalty. We put everything in your GitHub repository.
Compliance ready
We build integrations that meet HIPAA, PCI-DSS, and SOC 2 requirements. We encrypt data in transit and at rest, log all access, and support audit trails. Your compliance team gets the documentation they need.
Production monitoring included
Every integration ships with Datadog dashboards and Sentry error tracking. We monitor latency, error rates, and data freshness. If something breaks, we get an alert before your users notice.
30 day warranty
After release, we fix any bugs or data issues for 30 days at no extra cost. We also provide a runbook so your team can handle common issues without calling us.
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.
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