Senior API Integration Development TeamDevelopment Team
We build secure custom API integrations that connect your systems without data loss. Our senior engineers deliver production-ready endpoints in 8 to 12 weeks.
IRPR builds custom API integrations for businesses that need reliable data exchange between systems. Our senior engineers use REST, GraphQL, webhooks, and authentication protocols like OAuth 2.0 and SAML to connect your CRM, ERP, payment gateways, and third-party platforms.
Every project ships a production-ready integration within 8 to 12 weeks. Pricing ranges from $80,000 to $250,000, fixed from the Roadmap phase. We build with compliance in mind — HIPAA, PCI-DSS, and SOC 2 controls are standard in our delivery.
Our clients are CTOs connecting legacy systems to modern SaaS tools, engineering leads building microservice architectures, product managers integrating third-party data streams, and founders launching marketplaces that depend on reliable API sync.
Types of software we ship.
Payment Gateway Integration
Connect Stripe, Braintree, or Adyen for secure transaction processing with retry logic and fraud detection. Includes webhook handling and PCI-DSS compliance.
CRM Integration
Sync leads, contacts, and deals between Salesforce, HubSpot, or Zoho and your internal systems. Supports custom field mapping and deduplication.
ERP Integration
Integrate NetSuite, SAP, or Dynamics 365 with your ecommerce platform or warehouse management system. Automate order-to-cash and procurement workflows.
Marketing Automation Integration
Connect Mailchimp, Marketo, or Klaviyo to your data warehouse for real-time audience segmentation and campaign triggers.
Inventory Management Integration
Synchronize stock levels across Shopify, Amazon, and warehouse systems using REST APIs and webhooks. Includes low-stock alerts and multi-warehouse support.
Customer Support Integration
Integrate Zendesk, Intercom, or Freshdesk with your CRM and billing system. Automate ticket creation from failed transactions and support escalations.
Ecommerce Platform Integration
Connect BigCommerce, WooCommerce, or Magento to payment processors, shipping carriers, and ERP systems. Built for high-volume order processing.
Healthcare Data Integration
Transfer patient data using HL7 FHIR, DICOM, or custom APIs between EHR systems, lab platforms, and telehealth tools. HIPAA-compliant by default.
We build for every business type.
Enterprise & compliance-heavy industries
SaaS platforms scaling integrations
Ecommerce & retail businesses
Media & content platforms
Data & infrastructure teams
Why senior engineers matter for API integration
Your integrations need to be reliable and secure because they touch every part of your business.
IRPR's senior engineers have built more than 200 integrations for clients in 50 countries. Each integration includes automated retry logic, circuit breakers, and structured error handling to prevent data loss during network failures or API deprecations.
We use a standardized integration framework that enforces logging with Sentry, health checks, and rate limiting. This approach ensures 99.9% uptime for critical data pipelines and cuts debugging time by 60% compared to ad-hoc development.
Generic dev shop vs IRPR
Not all API integration teams deliver the same level of quality and compliance.
Many agencies assign junior developers to API work, leading to fragile integrations that break when APIs change. They bill by the hour and treat compliance as an afterthought.
IRPR assigns senior engineers who average 12 years of experience. We use a fixed-price model defined in the Roadmap phase and build HIPAA, PCI-DSS, and SOC 2 controls into every integration from day one.
- Junior developers with no API security training
- Hourly billing with no fixed scope
- No compliance experience (HIPAA, PCI-DSS)
- Integration breaks after platform updates
- No error monitoring or alerting
- Code ownership disputed in contract
- Senior engineers with 10+ years API experience
- Fixed price agreed in Roadmap phase (week 2)
- Built-in compliance for HIPAA, PCI-DSS, SOC 2
- Automated retry logic and circuit breakers
- New Relic + Sentry monitoring included
- Full source code ownership
Our API integration process
We follow a proven four-phase process to deliver production-ready integrations.
Each project begins with a 2-week Roadmap phase where we define endpoints, error handling, and testing strategy. This phase is included in the fixed price and sets clear expectations for timeline and cost.
During implementation we write integration tests that cover 95% of API edge cases. After deployment we monitor the integration in production for 30 days, tracking latency, error rates, and data accuracy.
What ships with every API integration
Every project delivers more than just endpoints.
You get the full package: source code, tests, monitoring, documentation, and compliance artifacts.
- Source code in your private GitHub repo
- CI/CD pipeline with automated tests
- Postman collection with sample requests
- Error logging with Sentry and structured logs
- Health check endpoint documented
- Rate limiting and retry logic
- Authentication flow (OAuth 2.0, API keys)
- Swagger/OpenAPI specification
- Deployment scripts for AWS or GCP
- Runbook for incident response
What we ship in this practice.
Stripe Payment Integration for Ecommerce
IRPR built a custom Stripe integration that handles 10,000+ transactions daily with automatic retries on declined payments. The client reduced failed transactions by 30% and now reconciles payments in real time. Tech stack: Node.js, Stripe API, PostgreSQL.
Salesforce CRM Sync for Healthcare
We integrated a healthcare CRM with Salesforce to automate patient intake and eligibility checks. Manual data entry dropped by 20 hours per week. Tech stack: Python, Salesforce REST API, HL7 FHIR, HIPAA compliant.
Shopify Inventory Sync for Retail
A multi-location retailer needed real-time inventory sync between Shopify and their warehouse ERP. IRPR built a bidirectional integration that updates stock across 5 stores in under 2 seconds. Overstock and stockouts fell by 40%. Tech stack: Ruby on Rails, Shopify Admin API, ERP SOAP endpoints.
QuickBooks Accounting Integration for Fintech
We integrated a fintech lending platform with QuickBooks Online to automate invoice and payment reconciliation. Invoice creation errors fell by 90%, and the finance team saved 15 hours per week. Tech stack: .NET, QuickBooks API, OAuth 2.0.
Twilio SMS Integration for Logistics
A logistics company needed real-time delivery status updates via SMS. IRPR built a Twilio integration that sends automated notifications at pickup, transit, and delivery milestones. Missed deliveries dropped by 25%. Tech stack: Python, Twilio API, Kafka for event streaming.
Google Maps API Integration for Travel
We integrated Google Maps Distance Matrix API into a travel booking platform to calculate dynamic pricing and estimated travel times. The client reduced fuel costs by 15% through optimized route suggestions. Tech stack: Node.js, Google Maps API, Redis caching.
Why teams hire us.
Fixed price, not hourly
Every project receives a fixed price in the Roadmap phase (week 2). You never see an hourly bill or a surprise invoice. If scope changes, we adjust the price and timeline together with a written change order.
Senior engineers only
IRPR assigns engineers who average 12 years of API development experience. No junior developers. Every integration is built by someone who has shipped production integrations for HIPAA, PCI-DSS, and SOC 2 environments.
Compliance built in, not bolted on
We integrate HIPAA, PCI-DSS, and SOC 2 controls from the first endpoint. Audit logging, encryption at rest and in transit, and access controls are part of every deliverable. No retroactive compliance fixes.
We write tests for edge cases
Our integrations have automated tests that cover 95% of code paths, including network failures, rate limits, and malformed payloads. Tests run in CI on every commit, so regressions are caught before deployment.
We own the production deployment
We deploy to your AWS, GCP, or Azure account and set up monitoring with Sentry and New Relic. The integration is live and monitored for 30 days post-launch. If something breaks, we fix it before you notice.
30 days of support included
After launch we stay on the project for 30 days to handle API version upgrades, data migration issues, and performance tuning. After that you can continue with a monthly retainer or self-manage with the runbook we provide.
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.