Senior Python Backend Development FirmBackend Development
We build production-grade Python backends for apps handling millions of requests. Fixed price, 8-12 week delivery with senior engineers only.
IRPR is a senior Python backend development firm that builds high-performance APIs, microservices, and data pipelines using Django, FastAPI, Flask, Celery, and PostgreSQL. Every engineer on your team has 8+ years of experience and has shipped production backends for Fintech, Healthcare, and SaaS platforms.
We deliver a complete Python backend MVP in 8 to 12 weeks at a fixed price ranging from $80,000 to $250,000. Our builds include CI/CD, automated testing, error monitoring (Sentry), and full compliance with HIPAA, PCI-DSS, SOC 2, or GDPR as required.
Our clients are CTOs scaling to millions of users, fintech startups needing PCI-DSS certified payment backends, healthcare platforms requiring HIPAA-compliant data handling, and SaaS companies launching multi-tenant APIs that must be reliable from day one.
Types of software we ship.
REST API development
Builds high-throughput REST APIs with Django REST Framework or FastAPI. Includes rate limiting, pagination, and OpenAPI docs.
GraphQL API development
Creates efficient GraphQL APIs using Strawberry or Graphene with Django. Reduces over-fetching and optimizes mobile app performance.
Microservices architecture
Designs decoupled microservices with FastAPI, RabbitMQ, and Docker. Enables independent scaling of each service.
Real-time data pipelines
Builds event-driven pipelines using Kafka or Redis Streams. Processes 10,000+ events per second with Celery workers.
ETL pipelines
Creates ETL processes with Airflow or Prefect to move data from APIs, CSVs, and databases into PostgreSQL or Snowflake.
Authentication and authorization systems
Implements OAuth2, JWT, and RBAC with Django Allauth or FastAPI Security. Integrates with Okta, Auth0, or Azure AD.
Third-party API integrations
Connects your backend to Stripe, Salesforce, HubSpot, Twilio, or Slack using asynchronous workers and retry logic.
Backend for mobile apps
Delivers optimized mobile backends with Firestore-like push notifications via Firebase, and file uploads to S3 with Django-storages.
We build for every business type.
Fintech
Healthcare
SaaS
Ecommerce
Media & Entertainment
Why companies choose IRPR for senior Python backend development
We have shipped 200+ production backends since 2018 with a 98% on-time rate.
Our engineers have worked at Google, AWS, and Stripe before joining IRPR. They know how to build backends that scale from 1,000 to 10 million users without rewrites.
We use fixed pricing and clear milestones. You know the exact cost and timeline before we write a single line of code. Every project includes CI/CD, monitoring, and full code ownership.
How IRPR differs from generic backend shops
Most agencies assign junior or mid-level developers. IRPR does not.
We only hire senior Python developers with 8+ years of production experience and a track record of shipping at scale. Our project managers are ex-engineering leads who understand the technical tradeoffs.
Every backend comes with built-in compliance (HIPAA, PCI-DSS, SOC 2) and a dedicated PM who updates you daily. You get full code ownership and a 30-day post-launch support window.
- Assigns recent bootcamp grads
- No fixed timeline or scope
- Hourly billing with surprise costs
- No dedicated project manager
- Code ownership is unclear
- No compliance expertise
- Senior engineers only (8+ years)
- Fixed 8-12 week timeline
- Fixed price from the start
- Dedicated ex-engineering PM
- Full source code ownership
- HIPAA / PCI / SOC 2 compliance built-in
Our process: from Python backend idea to production
We follow a 4-phase process that guarantees on-time delivery and no scope creep.
Phase 1 is a one-week Discovery sprint where we map your use cases, data model, and integration points. Phase 2 produces a fixed-price Roadmap with wireframes and cost breakdown.
Phase 3 is the Build: we develop your backend in 2-week sprints, deploy to a staging environment, and run automated tests. Phase 4 is Release: we deploy to production, set up monitoring, and hand over the repository.
What ships with every Python backend
Every project includes these deliverables by default - no extra fees.
We believe in true ownership. When we deliver, you get everything you need to run, modify, and scale the backend yourself. All code is in your repository from day one.
- Source code in your GitHub repo
- CI/CD pipeline via GitHub Actions
- Docker Compose and Dockerfile setup
- Automated tests (unit, integration, E2E)
- API documentation (OpenAPI / Swagger)
- Sentry error monitoring
- Database schema and Alembic migrations
- Deployment playbook (AWS / GCP / Azure)
- 30 days post-launch support
- Code review by a second senior engineer
What we ship in this practice.
Real-time fraud detection API
Built a FastAPI backend processing 10,000 transactions per second with sub-100ms latency. Used Redis for feature caching and Celery for risk scoring. Reduced false positives by 40% compared to the client's previous rule-based system.
HIPAA-compliant patient data pipeline
Developed an ETL pipeline using Airflow and Python that ingests 2 million HL7 messages daily into a PostgreSQL data warehouse. Achieved HIPAA compliance with encryption at rest and in transit. Audited by a third-party firm within 2 weeks.
Multi-tenant SaaS backend for analytics
Created a Django REST API serving 500 tenants with isolated databases via PostgreSQL schemas. Supports 1,000 requests per second with Redis caching. The client raised a Series A 6 months after launch.
Order management system for ecommerce
Replaced a monolithic PHP backend with FastAPI microservices handling 50,000 orders per day. Integrated Stripe for payments and ShipStation for label generation. Cut order processing time from 5 minutes to under 10 seconds.
Video streaming backend for media platform
Built a media ingestion pipeline using Python and FFmpeg that transcodes videos to multiple resolutions. The backend serves 5 million monthly viewers with sub-2 second buffering. Deployed on AWS with auto-scaling groups.
Real-time logistics tracking API
Developed a WebSocket-based tracking system with FastAPI and Redis Pub/Sub. Processes 1,000 location updates per second from GPS devices. Reduced tracking delays from 30 seconds to under 1 second for a fleet of 10,000 vehicles.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the total cost before we write code.
Senior engineers only (8+ years)
We hire only Python developers with at least 8 years of production experience. Our team includes ex-Google, AWS, and Stripe engineers who have scaled systems to millions of users.
We build for compliance from day one
HIPAA, PCI-DSS, SOC 2, and GDPR are built into the architecture, not added after. We have delivered 40+ compliant backends and can help you pass audits on the first attempt.
Full code ownership
You own every line of code from the first commit. No lock-in, no hidden licenses. The source code lives in your GitHub repository and you can take it anywhere.
Dedicated project manager
You get a single PM who is an ex-engineering lead. They write daily standup summaries, manage the scope, and ensure the 8-12 week timeline is met without delays.
On-time delivery guarantee
We have delivered 98% of projects on time since 2018. If we miss the contracted deadline, we work at no additional cost until the backend is in production.
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.