Experienced API Integration Development DevelopersIntegration Developers
We build secure integrations between your systems and third party APIs. Fixed price, senior engineers, 12 week delivery.
IRPR builds custom API integrations using REST, GraphQL, Webhooks, and gRPC. We connect platforms like Salesforce, Shopify, Stripe, Slack, Twilio, AWS, and Azure with your existing stack.
Our experienced API integration development developers deliver a working integration in 12 weeks. Pricing is fixed from $80K to $250K. Every integration includes compliance for HIPAA, PCI-DSS, or SOC 2 as needed.
Companies hire us when their CTO needs to unify data across 5+ systems, a product manager requires a marketplace connection before launch, or an engineering lead wants to offload integration complexity without hiring full-time staff.
Types of software we ship.
Stripe payment gateway integration
Sync one-time and recurring payments between your app and Stripe's API. Supports webhooks for real time events.
Salesforce CRM sync
Bidirectional data sync for contacts, deals, and custom objects using Salesforce REST and Bulk API.
Slack bot integration
Build a Slack app that posts alerts, handles slash commands, and reads messages via the Events API.
Shopify ERP integration
Connect Shopify orders and inventory to your ERP (Netsuite, SAP, Dynamics) using GraphQL Admin API.
Twilio SMS / Voice API
Send SMS verifications, voice calls, and WhatsApp messages using Twilio's Programmable Messaging API.
AWS Lambda event-driven integrations
Trigger serverless functions on S3 events, SNS topics, or CloudWatch logs to move data between services.
Mapbox geolocation service
Display maps, geocode addresses, and calculate routes using Mapbox REST and GL JS APIs.
Auth0 identity federation
Enable single sign on (SSO) across apps with Auth0's Management API and OIDC connections.
We build for every business type.
SaaS companies
Healthcare
Fintech
Ecommerce
Logistics
Why hire experienced API integration development developers?
A single integration error can corrupt data and cost thousands. We build integrations that work from day one.
IRPR's developers have connected 200+ products across 50+ countries. We use statically typed languages (TypeScript, Go) and automated testing to catch mismatches before they reach production.
Each integration includes a retry and error handling layer, structured logging (Sentry), and a health check endpoint. You get a deployed solution with documented endpoints within 12 weeks.
The difference between generic dev shops and IRPR
Most shops treat integration as a side task. We treat it as the core deliverable.
Generic shops often assign junior developers to integration work. They skip error handling, ignore rate limits, and deliver code that breaks when the third party updates.
IRPR assigns senior engineers with experience on the exact API you need. We write integration tests, add circuit breakers, and hand over a dashboard with logs and alerts.
- No dedicated integration test suite
- No rate limit handling
- No monitoring or alerting
- No retry logic for transient failures
- No documentation of endpoints
- Junior developer assigned to integration
- Full integration test coverage with mock APIs
- Automatic rate limit backoff and retry
- Sentry error tracking and Datadog dashboards
- Exponential backoff with dead letter queue
- Complete OpenAPI specification delivered
- Senior engineer with 5+ years on the target API
Our process for API integration development
We follow four phases to deliver your integration on time and on budget.
Phase 1 is Discovery (week 1). We map your current systems, identify required data flows, and document every third party API endpoint you need.
Phase 2 is Roadmap (week 2). We produce a fixed price quote, a sequence diagram of the integration, and a detailed 10-week build plan.
What ships with every API integration
You get more than just code. Every deliverable includes these items by default.
IRPR ships production ready integrations with full documentation and monitoring. No handoffs, no unfinished work.
- Source code in your private Git repository
- CI/CD pipeline via GitHub Actions or GitLab CI
- Unit and integration test suite (minimum 80% coverage)
- API endpoint documentation (OpenAPI 3.0)
- Error logging via Sentry with alert rules
- Health check endpoint (GET /health)
- Runbook with common failure patterns and recovery steps
- Postman or Bruno collection for manual testing
- Deployment to AWS, GCP, or Azure — your pick
- 30 day post release support
What we ship in this practice.
Healthcare data exchange with Epic FHIR
Connected a patient portal to Epic's FHIR API. Reduced manual data entry by 12 hours per week. Stack: Next.js, FastAPI, PostgreSQL, Epic FHIR R4.
Stripe to Salesforce payment sync
Built a bidirectional sync between Stripe and Salesforce. Payment updates appear in Salesforce within 30 seconds. Stack: Node.js, Salesforce REST API, Stripe webhooks, Redis.
Shopify to NetSuite inventory sync
Integrated Shopify with NetSuite ERP for a 50 store brand. Inventory updates propagate in under 2 minutes. Stack: Ruby on Rails, Shopify GraphQL, NetSuite SOAP, Resque.
Slack + Jira incident management
Built a Slack bot that creates Jira issues from messages. Reduced incident response time from 40 minutes to 8 minutes. Stack: Python, Slack Events API, Jira REST API, Celery.
Twilio based two factor authentication
Implemented SMS 2FA using Twilio Verify API. Onboarded 15,000 users in the first month with 99.8% delivery rate. Stack: Go, Twilio Verify, PostgreSQL, AWS Lambda.
Real time logistics tracking with ShipEngine
Integrated ShipEngine for label generation and tracking across 3 couriers. Reduced label creation time from 3 hours to 12 minutes per day. Stack: Django, ShipEngine REST, Celery, Redis.
Why teams hire us.
Fixed price, not hourly
Every integration project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
Every developer has 8+ years of experience and has shipped at least 5 production integrations. No junior developers are assigned to your project.
Production ready monitoring
We configure Sentry error tracking and Datadog dashboards for every integration. You get alerts when a third party API changes or fails.
Full code ownership
You own all source code, documentation, and infrastructure after the project. No licensing, no recurring fees.
Compliance from day one
Integrations are built to HIPAA, PCI-DSS, or SOC 2 standards based on your industry. We handle data encryption, audit logs, and access controls.
12 week delivery guarantee
We deliver a working, tested integration within 12 weeks. 98% of our projects ship on time. If we are late, you do not pay for the extra weeks.
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.