API Integration Development CompanyDevelopment Company
We build custom API integrations that move your data reliably. Senior engineers deliver in 8-12 weeks at a fixed price.
IRPR is an API integration development company that builds custom data pipelines for SaaS platforms, marketplaces, and enterprise systems. We use Node.js, Python, Postgres, Redis, and message queues like RabbitMQ to handle millions of API calls per day.
Every integration project ships with a documented API, error handling, monitoring, and alerting. Timelines run 8-12 weeks for a full integration. Pricing is fixed, typically $80k-$250k depending on the number of endpoints and complexity. We support HIPAA, PCI DSS, SOC 2, and FERPA compliance.
You hire us if you are a CTO migrating from legacy systems to modern APIs, a VP of Engineering building a multi-vendor marketplace, a product owner integrating Stripe, Salesforce, or HubSpot into a SaaS product, or a founder connecting an ecommerce store to a 3PL warehouse.
Types of software we ship.
Third-party SaaS integration
Connect your app to HubSpot, Salesforce, Stripe, Shopify, or any REST/GraphQL API. We handle auth, rate limits, and data sync.
Payment gateway integration
Implement Stripe, Braintree, Plaid, or Adyen for payments, subscriptions, refunds, and payout automation. PCI DSS compliant by default.
Ecommerce platform integration
Sync orders, inventory, and customers between Shopify, WooCommerce, BigCommerce, and your ERP or warehouse system. Real-time via webhooks.
Healthcare API integration
Connect EHR systems like Epic or Cerner to your app using FHIR or HL7. HIPAA compliant with audit logs and BAA in place.
Fintech API integration
Interface with Plaid, Stripe Connect, or MX for account aggregation, transaction data, and ACH transfers. SOC 2 Type II certified.
CRM and marketing integration
Build two-way sync between Salesforce, HubSpot, Marketo, and your internal data warehouse. Real-time with deduplication.
Logistics and shipping integration
Connect ShipStation, EasyPost, FedEx, or Uber Freight for label generation, tracking, and delivery status updates.
Data pipeline and ETL integration
Extract data from APIs, transform with dbt, and load into Snowflake, BigQuery, or Redshift. Scheduled or event-driven.
We build for every business type.
brands and marketplaces
companies and platforms
providers and vendors
and financial services
and supply chain
API integration development company metrics
We track everything that matters to your integration project.
Every API integration we build includes automated tests, monitoring, and error recovery. Our average project ships in 10 weeks, and we maintain a 98% on-time delivery rate across all products.
Our integrations handle up to 10,000 API calls per minute. We use Redis for caching and queue-based retries to ensure zero data loss during spikes. All code is yours, stored in your GitHub repo from day one.
How IRPR is different from other API integration companies
Most agencies bill hourly and hand you broken endpoints. We don't.
Generic development shops often build one integration at a time with no documentation. You get a single endpoint, a messy Postman collection, and a surprise invoice when something changes.
IRPR builds your API integration as a product. Every project gets a Roadmap in week 2, a fixed price, automated tests, and a runbook for your operations team. We ship source code to your repository on day one.
- Hourly billing, unpredictable costs
- No automated tests
- No error handling or retries
- Code sits on their servers until payment
- One integration at a time, no docs
- Support ends when the contract ends
- Fixed price, no surprises
- Integration tests cover every endpoint
- Queues and dead-letter handling built in
- Source code in your repo from day one
- Full documentation with runbook
- SLA-backed support for 6 months post-launch
Our API integration development process
We follow a repeatable 4-phase process to build your integration.
Every integration project starts with an Idea phase where we map your data flow and identify every API endpoint you need. In the Roadmap phase, we produce a fixed quote and a week-by-week plan.
The Product phase is where we build the integration: write code, set up CI/CD, deploy to staging, and run integration tests. Release phase includes production deployment, monitoring setup, and a handoff to your team.
What ships with every API integration
You own everything. No black boxes, no locked code.
Every integration project includes these deliverables by default. There are no hidden add-ons or extra fees.
- Source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Automated integration tests (100+ per project)
- Dead-letter queue for failed messages
- CloudWatch or DataDog monitoring dashboard
- Sentry error tracking with alerts
- API documentation with Swagger
- Runbook for on-call engineers
- Postman collection for manual testing
- SLA-backed support for 6 months
What we ship in this practice.
Stripe-HubSpot sales pipeline sync
A B2B SaaS company needed to sync Stripe subscription data to HubSpot CRM. We built a bi-directional sync using Stripe webhooks and HubSpot API. Result: 6 hours of manual data entry saved per week. Tech stack: Node.js, Redis, HubSpot REST API, Stripe API.
Ecommerce warehouse integration
A Shopify merchant with 50,000 orders per month needed real-time inventory sync with a 3PL warehouse. We built a system that pushes orders from Shopify to the 3PL API via webhooks and updates inventory back. Result: 0 order errors and 2-hour faster fulfillment. Tech stack: Ruby on Rails, Shopify GraphQL, 3PL REST API, Sidekiq.
Healthcare EHR data exchange
A telemedicine platform needed to send appointment data to Epic EHR. We implemented a FHIR-based integration with HIPAA-compliant encryption and audit logging. Result: 100% reduction in manual chart entry. Tech stack: Python, FHIR R4, Epic MyChart API, AWS KMS.
Fintech account aggregation
A lending platform needed to pull transaction history from 200+ banks via Plaid. We built a worker queue that processes 10,000 transactions per minute with automatic retries and error reporting. Result: loan approvals in 5 minutes instead of 2 days. Tech stack: Node.js, Plaid Link, PostgreSQL, Redis, Bull queue.
Real estate MLS feed integration
A real estate marketplace needed to ingest listings from 50+ MLS systems across the US. Each MLS has a different API format. We built a normalization layer that maps fields into a unified schema. Result: 5,000 new listings ingested daily with 99.95% accuracy. Tech stack: Python, PostgreSQL, Apache Airflow, REST APIs.
Logistics tracking platform
A logistics startup needed to unify tracking from FedEx, UPS, and USPS into one dashboard. We built a single API endpoint that accepts a tracking number and returns status from the correct carrier. Result: 40% fewer support tickets on delivery status. Tech stack: Node.js, Redis cache, carrier REST APIs, WebSockets for real-time updates.
Why teams hire us.
Fixed price, not hourly
Every integration project gets a fixed quote in the Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior engineers only
We do not hire junior developers. Every engineer on your project has 8+ years of experience building production-grade API integrations. You get a tech lead who has worked with Stripe, Plaid, Salesforce, Epic, and 50+ other APIs.
Code in your repo from day one
On the first day of the project, we create a private GitHub repo under your organization. You own the entire codebase. When the project ends, you have full control with zero lock-in.
200+ products shipped across 50+ countries
We have built integrations for clients in healthcare, fintech, ecommerce, logistics, and more. Each project ships with automated tests, monitoring, and a runbook.
Compliance-ready pipelines
We build HIPAA-compliant integrations with BAA and audit logs. We support PCI DSS Level 1 for payment data and SOC 2 Type II for fintech. Compliance is baked into the architecture, not an afterthought.
SLA-backed support for 6 months
After launch, we provide 6 months of SLA-backed support. We monitor your integration, handle errors, and ship patches within 24 hours for critical issues. You are never left alone.
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.