Top API Integration Development CompanyIntegration Development
We build custom API integrations that move data between tools without manual effort. 12-week delivery, fixed price, full code ownership.
IRPR is the top API integration development company for teams that need data to move between tools. We build custom bridges between SaaS platforms like Salesforce, HubSpot, Stripe, Twilio, and cloud databases. Our engineers write clean, documented code using REST, GraphQL, WebSocket, and Kafka.
Every engagement ships within 12 weeks on average. Fixed pricing starts at $80K and goes to $250K for complex multi-directional syncs. All integrations pass security audits for HIPAA, PCI-DSS, and SOC 2. We hold compliance certifications in healthcare, fintech, and SaaS.
Our buyers are CTOs at Series A-B startups who need their CRM to talk to their billing system. Head of Engineering at a 50-person healthtech firm who needs to sync patient records across 4 platforms. VP of Product at an ecommerce brand who wants real-time inventory sync between Shopify and a warehouse ERP. They all need a partner who delivers and complies on day one.
Types of software we ship.
CRM integration platform
Connect Salesforce, HubSpot, or Zoho to your ERP or billing system. We build bi-directional syncs with conflict resolution rules.
Payment gateway integration
Stripe, Square, Braintree, or Adyen. We handle webhooks, idempotency, 3D Secure, and PCI-DSS compliant token storage.
Communication API integration
Twilio, SendGrid, Slack, or WhatsApp Business API. Build automated SMS, email, or chat workflows with delivery logs.
Ecommerce platform integration
Shopify, BigCommerce, Magento, WooCommerce. Sync products, orders, inventory, and customers in real time via webhooks.
Data warehouse integration
Snowflake, BigQuery, Redshift, or Postgres. Build ELT pipelines with dbt and Airbyte for analytics-ready data.
Identity and SSO integration
Okta, Auth0, Azure AD, or Keycloak. Implement OAuth 2.0, SAML, or OpenID Connect for secure single sign-on.
Shipping and logistics API
ShipStation, EasyPost, FedEx, UPS, or DHL. Automate label generation, tracking updates, and rate shopping.
Healthcare API integration
Epic, Cerner, Athenahealth, or HL7 FHIR. Build compliant data exchange for patient records, labs, and billing.
We build for every business type.
SaaS and enterprise
Healthcare
Fintech
Ecommerce
Real estate
Why you need a top API integration development company
Off-the-shelf integrations break when your data model changes or your volume grows.
Prebuilt connectors from Zapier or Make work for simple single-direction copies. But when you need bi-directional sync with conflict resolution, error retry with backoff, webhook verification, and audit logs, you need a custom build. IRPR builds integrations that handle 10,000+ records per second with 99.9% uptime SLAs.
We use Celery for task queues, Redis for caching, and idempotent endpoints to prevent duplicate charges or records. Every integration ships with Postman collections, OpenAPI specs, and a test suite. You get full ownership of the code from day one.
The difference between a generic dev shop and a top API integration partner
Generic shops write code that works once. IRPR builds integrations that last.
We have seen projects from other shops where webhooks are not verified, error handling is missing, and the integration silently drops records. That costs your team hours of debugging and trust with customers.
IRPR writes every integration with retry logic, dead-letter queues, monitoring dashboards, and a rollback plan. We run a 2-week Roadmap phase before any code is written so you know exactly what ships, when, and for how much.
- No end-to-end testing
- Webhook security left out
- Error handling is afterthought
- No documentation or specs
- Unlimited scope creep
- No compliance review
- Automated test suite with 90%+ coverage
- HMAC or JWT webhook verification
- Exponential backoff and dead-letter queues
- OpenAPI spec and Postman collection shipped
- Fixed price locked in Roadmap phase
- HIPAA, PCI-DSS, SOC 2 audits included
How we build your custom API integration
A clear 4-phase process from idea to release.
Every engagement starts with a structured Roadmap phase. You invest 2 weeks and get a full spec, data flow diagrams, a fixed price, and a timeline. No commitment to build. If you do not like the plan, you walk away with the documentation.
After the Roadmap, we build in 2-week sprints. You see progress every sprint with a working integration deployed to a staging environment. We handle security audits, load testing, and documentation before the final release.
What ships with every API integration
No black boxes. Every deliverable is open, documented, and owned by you.
When we finish a project, you are not left guessing how the integration works or how to fix it when something breaks. Every single file is in your repository, including the infrastructure code. You can hire any developer to maintain it or nobody at all.
- Source code in your private GitHub repo
- Full API documentation with OpenAPI 3.0 spec
- Postman collection with example requests
- CI/CD pipeline on GitHub Actions or GitLab CI
- Automated test suite with 90%+ line coverage
- Docker images for local development
- Grafana dashboard with real-time metrics (latency, error rate, throughput)
- Runbook for common failure scenarios
- Schema mapping and transformation logic documentation
- Data validation rules written in Pydantic or Zod
What we ship in this practice.
Ecommerce order sync between Shopify and NetSuite
Built a bidirectional sync for a DTC brand processing 5,000 orders per day. Orders in Shopify create sales orders in NetSuite, inventory updates flow back every 15 seconds. Tech stack: Node.js, Shopify REST API, NetSuite SuiteTalk, Redis, Celery.
Patient record integration between Epic and a telehealth platform
HL7 FHIR integration that syncs patient demographics, appointment slots, and visit summaries. Reduced manual data entry by 8 hours per week per provider. Tech stack: Python, FHIR R4, Auth0, AWS Lambda, DynamoDB.
Real-time payment reconciliation for a fintech app
Built a webhook receiver for Stripe and Square that matches payments to invoices within 5 seconds. Handles idempotency to prevent double-crediting. Tech stack: Go, Stripe API, Square API, PostgreSQL, Kafka.
MLS data import for a real estate CRM
Imports listing data from 12 MLS boards into a custom CRM every 30 minutes. Handles deduplication, image compression, and geo-coordinate enrichment. Tech stack: Python, RETS API, S3, CloudFront, PostGIS.
Employee data sync between BambooHR and Slack
When HR updates a role or team in BambooHR, the Slack group membership updates automatically. Removes manual provisioning requests. Tech stack: Node.js, BambooHR API, Slack API, Redis, AWS EventBridge.
Inventory sync between a warehouse WMS and 3 marketplaces
Real-time inventory levels pushed to Amazon, eBay, and Shopify. Prevents overselling during flash sales. Handles 50,000 SKUs with 1-second latency. Tech stack: Python, Amazon SP API, eBay API, Shopify GraphQL, Apache Kafka.
Why teams hire us.
Fixed price, not hourly
Every integration project gets a fixed quote during the 2-week Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. If the scope changes, we re-quote before building.
Senior engineers only
We do not staff juniors or offshore interns. Every engineer has 8+ years of experience and has shipped integrations for at least 3 different industries. Our team average tenure is 11 years.
Compliance-first approach
We audit every integration against HIPAA, PCI-DSS, or SOC 2 controls during the build. Not after. This means zero surprises during your annual security review. We have a 100% pass rate.
Full code ownership
You own the entire codebase from sprint one. No hidden license fees, no platform lock-in, no monthly maintenance charges. You can hire anyone to maintain it or your internal team can take over.
12-week delivery guarantee
Our average project ships in 12 weeks. We have a 98% on-time record across 200+ projects. If we are going to miss a date, we tell you 2 sprints in advance, not 2 days.
Post-launch support included
After release, we stay on for 30 days of production support. We triage any issues, fix bugs, and help your team learn the codebase. After 30 days, we offer maintenance at a fixed monthly rate.
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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