Premium FastAPI Development ConsultantsFastAPI
We build production-ready FastAPI backends in 8-12 weeks. Fixed price, senior engineers, and full compliance built in.
IRPR builds production-grade APIs with FastAPI, Pydantic, SQLAlchemy, and async PostgreSQL. Every project starts with a clear architecture that handles 10K+ concurrent requests from day one.
We ship a fully tested, documented FastAPI backend in 8-12 weeks. Pricing is fixed between $80K and $250K depending on scope. All projects meet HIPAA, PCI-DSS, or SOC 2 compliance as needed.
Our clients include CTOs of Series A SaaS startups, engineering leads at fintech companies, healthcare platform founders, and product managers at enterprise IT teams. They hire us when they need a senior team that delivers on time and on budget.
Types of software we ship.
RESTful API Backend
CRUD APIs with automatic OpenAPI docs. Uses Pydantic models, async endpoints, and PostgreSQL with Alembic migrations.
Real-time WebSocket Service
Bi-directional event streaming for chat, live dashboards, and notifications. Uses WebSockets with Redis Pub/Sub and async handlers.
Microservices Orchestration
Decoupled services communicating via gRPC or message queues. Uses FastAPI for each service, Docker Compose, and Kubernetes for deployment.
Data Pipeline API
Ingest, transform, and serve large datasets. Uses FastAPI with async batch processing, Celery workers, and S3 object storage.
Machine Learning Inference API
Serve ML models with low latency. Integrates ONNX Runtime or TensorFlow Serving behind FastAPI endpoints with caching via Redis.
Third-party Integration Gateway
Unify multiple external APIs under a single interface. Uses FastAPI with OAuth2, rate limiting, and async HTTPX clients.
Admin Dashboard Backend
Role-based admin panel with custom analytics endpoints. Uses FastAPI with SQLAdmin, Celery for reports, and async rendering.
Authentication Microservice
Centralized auth with JWT, OAuth2, and social login. Uses FastAPI with passlib, jose, and PostgreSQL for user management.
We build for every business type.
SaaS startups
Healthcare
Fintech
E-commerce
Enterprise
Premium FastAPI Development Consultants Deliver Measurable Results
Our clients get production APIs that handle real traffic from day one.
Every FastAPI backend we build includes async requests, connection pooling, and database indexing for sub-50ms P99 latency. We load test every endpoint using locust with 10,000 virtual users before going live.
We have shipped 200+ products across 50+ countries with a 98% on-time delivery record. Our average project ships in 12 weeks, from architecture to production deployment.
How IRPR Compares to a Generic Dev Shop
Not all FastAPI consultants are the same. Here is the difference.
Most dev shops charge hourly and hand you incomplete code with no docs or CI/CD. They treat compliance as an afterthought, and you end up paying twice to fix it later.
IRPR delivers a fully tested, documented, and deployed API with a fixed price. We handle HIPAA, PCI-DSS, and SOC 2 from day one so you never have to rearchitect.
- Hourly billing with unpredictable costs
- No compliance expertise
- No CI/CD pipeline
- Vague specifications
- Handoff without documentation
- No post-launch support
- Fixed price from the Roadmap phase
- HIPAA, PCI-DSS, SOC 2 built in
- CI/CD with GitHub Actions and Sentry
- Detailed specs and architecture docs
- Full source code in your repo
- 12-week launch guarantee
Our FastAPI Consulting Process
We move from idea to production API in 12 weeks.
Our process is designed to remove uncertainty. You see the full architecture, get a fixed price, and watch the API take shape in two-week sprints.
Every sprint ends with a working demo. We deploy to staging on week 10 and production on week 12.
What Ships with Every FastAPI Project
You get everything needed to run and maintain the API yourself.
We don't just write code. We give you the complete setup so your team can take over immediately.
All artifacts are in your repository from the first commit.
- Source code in your GitHub/GitLab repo
- CI/CD pipeline using GitHub Actions
- Sentry error tracking and performance monitoring
- Docker Compose with production configuration
- Swagger/ReDoc API docs
- Unit tests with pytest (90%+ coverage)
- Load test results from locust
- Deployment playbook with runbooks
What we ship in this practice.
Fintech Payment Integration API
Built a FastAPI backend that connects Plaid, Stripe, and custom ledger services. Reduced payment processing latency by 60%, handling 5,000 transactions per second with 99.9% uptime. Tech stack: FastAPI, PostgreSQL, Stripe Connect, Redis.
HIPAA-Compliant Telehealth API
Created a patient-facing FastAPI API for video scheduling, e-prescriptions, and lab results. Passed HIPAA audit on first attempt. Achieved 200ms average response time for 10,000 concurrent users. Tech stack: FastAPI, PostgreSQL, Twilio, AWS KMS.
Real-Time Inventory Management API
Developed a WebSocket-powered FastAPI service for a national ecommerce brand. Updates inventory across 50 warehouses in under 1 second. Reduced stockout incidents by 80%. Tech stack: FastAPI, Redis, PostgreSQL, AWS Lambda.
Event-Driven Analytics Pipeline
Built a FastAPI data ingestion endpoint handling 1 million events per hour. Used Kafka for buffering and ClickHouse for real-time queries. Delivered sub-second dashboard refresh for marketing team. Tech stack: FastAPI, Kafka, ClickHouse, S3.
Multi-Tenant SaaS Backend
Designed a FastAPI backend with row-level security and tenant isolation for a B2B analytics platform. Onboarded 200+ tenants in the first month without any performance degradation. Tech stack: FastAPI, PostgreSQL (schema-per-tenant), Redis, Docker.
OAuth2 Identity Microservice
Created a centralized auth service supporting OAuth2, SAML, and social login for a Fortune 500 company. Cut login failure rate from 3% to 0.1%. Tech stack: FastAPI, Auth0, PostgreSQL, Redis.
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. If scope changes, we amend the quote before work begins.
Senior engineers only
Our team averages 10+ years of experience building production APIs. Every engineer has shipped FastAPI backends handling millions of requests. You never get junior developers.
Compliance built in from day one
We embed HIPAA, PCI-DSS, and SOC 2 controls into the architecture from the first commit. No retrofitting. Our audit trail is ready for third-party review.
Async-first collaboration
We work async with 4+ hours of overlap with US time zones. You communicate via Slack and Notion, review code via GitHub, and get weekly video demos. No endless meetings.
Launch in 12 weeks or less
Our standard delivery timeline is 8-12 weeks for a complete FastAPI backend. We beat this 98% of the time. If we miss, you pay nothing for the overage.
Full code ownership
You own every line of code from the first commit. We never license or resell your IP. Your repository is yours, and you can deploy anywhere.
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.