FastAPI

FastAPI ยท Senior Engineers ยท India

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FastAPI is a modern, high-performance Python web framework for building APIs. Based on standard Python type hints, it provides automatic validation, serialisation, and interactive OpenAPI documentation โ€” making it the faโ€ฆ

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krapton-fastapi.tsx
from fastapi import FastAPI, Depends, HTTPException, BackgroundTasks from pydantic import BaseModel, Field from typing import Annotated import asyncio app = FastAPI(title="Inference API", version="1.0.0") class PredictRequest(BaseModel): text: str = Field(..., min_length=1, max_length=2000) model: str = Field(default="gpt-4o", pattern="^gpt-|^claude-") class PredictResponse(BaseModel): prediction: str confidence: float latency_ms: int async def get_current_user(token: str) -> dict: # JWT validation logic return {"user_id": "u-123"} @app.post("/predict", response_model=PredictResponse) async def predict(req: PredictRequest, user: Annotated[dict, Depends(get_current_user)], background_tasks: BackgroundTasks): result = await run_inference(req.text, req.model) background_tasks.add_task(log_prediction, user["user_id"], req.text, result) return result

What Our FastAPI Developers Build

Type-Safe APIs

Pydantic models provide automatic request validation, serialisation, and OpenAPI docs.

Async Support

Full asyncio support for concurrent request handling without blocking the event loop.

Dependency Injection

Clean, testable code via FastAPI's powerful dependency injection system.

Auto Documentation

Interactive Swagger UI and ReDoc generated automatically from your code.

Background Tasks

Run async tasks after returning a response for webhooks and notifications.

What to Expect

Pydantic Modelling

Designing request/response models with validators, aliases, and nested schemas.

Async Database Access

Using SQLAlchemy async, Tortoise ORM, or Prisma with asyncpg.

Authentication

JWT-based auth with OAuth2PasswordBearer and dependency injection.

Background Jobs

Celery, ARQ, or FastAPI background tasks for async workloads.

ML Serving

Serving PyTorch and scikit-learn models as REST APIs with FastAPI.

Industries We Serve with FastAPI

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Fintech

Trading dashboards, analytics portals, payment flows

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Healthcare

Patient portals, EHR UIs, telemedicine apps

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E-commerce

Headless storefronts, checkout, PIM dashboards

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SaaS Products

Multi-tenant apps, onboarding flows, admin panels

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EdTech

LMS platforms, video streaming, quiz engines

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Enterprise

Internal tools, ERPs, microservice frontends

Choose How You Work With Us

Full-time Dedicated

40h/week dedicated engineer integrated into your team. Daily standups, your tools, your process.

From $3,200/moGet Quote โ†’

Part-time Dedicated

20h/week focused engagement. Best for ongoing feature work, reviews, or mentoring.

From $1,800/moGet Quote โ†’

Fixed-Price Project

Defined scope, timeline, and cost. Milestone-based payments. Best for greenfield builds.

Common Questions

Hire a FastAPI Developer Today

Senior FastAPI engineers, available in 48 hours. Free trial, replacement guarantee, flexible monthly contracts.

Free NDA ยท Response in 24h ยท No Commitment

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