Senior Backend App Development ServicesBackend App
We build production-grade APIs and microservices. 200+ products shipped with 98% on-time delivery.
IRPR builds backend systems that scale. We use Node.js, Python, Go, PostgreSQL, Redis, and AWS to create APIs, event-driven microservices, and cloud infrastructure that handle millions of requests per day.
Every engagement starts with a 2-week Roadmap phase where we define the architecture and produce a fixed price. Typical MVP timelines are 10 to 14 weeks. Cost ranges from $80,000 to $250,000 depending on complexity. We comply with HIPAA, PCI-DSS, and SOC 2 out of the box.
We work with CTOs who need an API ready for launch by a hard deadline. Product owners who have detailed specs but no senior backend talent. And founders who want a scalable backend without hiring a full engineering team.
Types of software we ship.
REST API Development
Build stateless, versioned RESTful APIs with Node.js or Go. Includes Swagger documentation and rate limiting.
GraphQL API Development
Design type-safe GraphQL backends using Apollo or Relay. Ideal for complex data fetching with minimal overhead.
Microservices Architecture
Decompose monoliths into independently deployable services with event-driven communication via Kafka or RabbitMQ.
Real-Time Backend Systems
Build WebSocket-based systems for live dashboards, chat, and notifications using Socket.io or AWS AppSync.
Cloud Backend Infrastructure
Provision auto-scaling clusters on AWS, GCP, or Azure with Terraform. Includes CI/CD pipelines and monitoring.
Data Pipeline & ETL Services
Create data pipelines that transform and load data into warehouses like Snowflake or Redshift. Built with Apache Airflow.
Authentication & Authorization Systems
Implement OAuth 2.0, SAML, or custom JWT-based auth with role-based access control. Integrates with Okta or Auth0.
Legacy Backend Modernization
Migrate old PHP, .NET, or Java backends to modern Node.js or Python stacks with zero downtime deployments.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics & Travel
Senior backend app development services for complex systems
IRPR ships backend code that runs in production from day one.
Our senior engineers have built backends for companies processing over 10 million API calls per day. We choose the right database, cache layer, and message queue for each workload. PostgreSQL for strong consistency. Redis for high-speed caching. Kafka for event streams. We write comprehensive unit and integration tests with 90%+ coverage.
Each project runs on a fixed timeline. After the 2-week Roadmap phase you get a fixed price and a delivery date. We ship weekly builds so you see progress. No surprise delays. No scope creep. Every backend is deployed with CI/CD pipelines on GitHub Actions and monitored with Datadog and Sentry.
What makes senior backend development different
Not all backend agencies deliver senior-level code. Here is the difference.
Generic dev shops often rely on junior developers who copy boilerplate code. They skip load testing and miss edge cases like rate limiting or database connection pooling. After launch you pay for costly rework and emergency fixes.
IRPR assigns experienced engineers from day one. Every backend is built with clean architecture, documented APIs, and automated tests. We perform load testing with k6 or Locust before production. The result is a backend that handles traffic spikes without crashing.
- Junior developers with minimal backend experience
- No load testing before launch
- Missing error handling and retry logic
- Untested database migrations
- No CI/CD pipeline
- Hourly billing with no fixed price
- Senior engineers with 10+ years average experience
- Load testing with k6 or Locust in every project
- Comprehensive error handling with Sentry
- Database migrations tested and automated with Flyway
- CI/CD pipeline on GitHub Actions from day one
- Fixed price after the 2-week Roadmap phase
Our backend development process in 4 phases
From idea to production backend in 12 weeks.
We follow a structured process that keeps every project on budget and on time. There are no discovery workshops that drag on for months. You get a working backend and deploy it to production.
Each phase ends with a deliverable you can review. Changes are incorporated in the next sprint. The result is a backend that meets your exact needs without the usual agency overhead.
What ships with every backend project
Every project includes these deliverables by default.
There are no hidden add-ons. The price we quote in the Roadmap phase covers everything listed here. You own the code from day one.
We deploy to your own cloud account so you maintain full control. Our developers work in your AWS or GCP organization. No vendor lock-in.
- Source code in your private GitHub repository
- CI/CD pipeline on GitHub Actions or GitLab CI
- PostgreSQL database schema with migrations
- REST or GraphQL API with Swagger documentation
- Authentication and authorization (JWT, OAuth 2.0, or SAML)
- Error tracking with Sentry
- Application performance monitoring with Datadog or New Relic
- Load test results using k6 or Locust
- Deployment scripts for AWS, GCP, or Azure
- 30-day post-launch support and bug fixes
What we ship in this practice.
Healthcare API for patient data exchange
Built a HIPAA-compliant REST API that connects electronic health record systems. The backend handles 500,000 patient data transactions per month using Node.js, PostgreSQL, and AWS Lambda. Reduced manual data entry by 12 hours per week per clinic.
Real-time payment processing engine
Developed a PCI-DSS compliant microservices backend for processing recurring payments. Uses Go, Redis for transaction queues, and Stripe Connect. Achieved 99.99% uptime over 18 months. Handles $15 million in monthly transaction volume.
Multi-tenant SaaS backend for ERP software
Designed a multi-tenant architecture with PostgreSQL row-level security. Built with Python Flask and deployed on AWS ECS. Supports 200 tenants with zero data leakage. Tenant onboarding time dropped from 2 weeks to 2 hours.
Inventory synchronization API for ecommerce
Created a real-time inventory sync API connecting Shopify, Amazon, and a custom warehouse system. Uses Kafka for event streaming and Redis for cache. Reduced overselling by 90% and cut sync latency from 5 minutes to 2 seconds.
Real estate listing aggregation backend
Built a backend that ingests MLS data from 12 regional sources. Uses Node.js, PostgreSQL with PostGIS, and Bull queue for data processing. Processes 3 million property records daily with 99.8% data accuracy.
Logistics route optimization microservice
Developed a Go-based microservice that calculates optimal delivery routes for a fleet of 500 drivers. Integrates with Google Maps API and stores route history in MongoDB. Reduced fuel costs by 15% and improved on-time delivery by 25%.
Why teams hire us.
Only senior engineers work on your project
We do not hire juniors or outsource to offshore teams. Every engineer has 10+ years of experience. Our team includes ex-Amazon, ex-Google, and ex-Microsoft backend developers who have built systems at scale.
Fixed price quoted after a 2-week Roadmap
You pay a small fixed fee for the Roadmap phase. After that you receive a fixed price for the entire project. No hourly billing. No time tracking. No surprise invoices.
Production-grade code from sprint one
We write tests, configure CI/CD, and set up monitoring in the first sprint. Your backend is deployable to production by the end of week 4. No tech debt carried forward.
Full ownership of code and infrastructure
The source code, database schemas, and infrastructure scripts are yours. We deploy on your AWS account. You can take the project to any team after we finish.
Compliance built in, not bolted on
We build HIPAA, PCI-DSS, and SOC 2 compliance into the architecture from day one. We use encryption at rest and in transit, audit logging, and access controls as part of every project.
Post-launch support included for 30 days
After we deploy your backend to production, we provide 30 days of bug fixes and performance monitoring. Your team gets walkthroughs of the codebase and infrastructure.
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.