You will get a production-ready FastAPI backend with PostgreSQL, Docker, and API docs

Vsevolod S.Status: Offline
Vsevolod S.

Let a pro handle the details

Buy Web Application Programming services from Vsevolod, priced and ready to go.
Vsevolod S.Status: Offline
Vsevolod S.

Let a pro handle the details

Buy Web Application Programming services from Vsevolod, priced and ready to go.

Project details

Need a reliable backend for your web or mobile app? You get a production-ready FastAPI service built with Python, PostgreSQL, and Docker — the same stack used by high-growth startups.

Most backend projects fail not because of bad code, but because the developer didn't think through the architecture. I do that first. Before writing a line of code, I confirm your data models, API contracts, and auth strategy. Then I build it clean, with tests and auto-generated Swagger docs included.

What every delivery includes:
• FastAPI app with structured router layout
• PostgreSQL database with SQLAlchemy ORM and Alembic migrations
• JWT authentication with refresh token support
• Docker + Docker Compose for one-command local setup
• Auto-generated interactive API docs (Swagger UI)
• Unit tests with pytest
• .env-based configuration for easy deployment

I don't disappear after delivery. If something doesn't work as expected, I fix it. The revision window is there for exactly that.

4+ years shipping Python backends for SaaS products, internal tools, and marketplaces. I write code I'd be comfortable maintaining myself.
Programming Languages
Python
Coding Expertise
Performance Optimization, Security
What's included
Service Tiers Starter
$300
Standard
$600
Advanced
$1,200
Delivery Time 7 days 14 days 21 days
Number of Revisions
120
Design Customization
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Content Upload
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Responsive Design
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Source Code
Vsevolod S.Status: Offline

About Vsevolod

Vsevolod S.Status: Offline
Fullstack Developer: FastAPI + React, from Backend to Deploy
Ko Samui, Thailand - 8:23 pm local time
I build complete web products from scratch: backend, frontend, database, and deployment, all handled by one developer. No coordination overhead between separate specialists. Two recent examples: rosindustry.pro, a production B2B marketplace for industrial procurement built on React, FastAPI, and PostgreSQL with active paying users; and a Telegram Mini App with a full subscription system, 8 API routers, 28 REST endpoints, a custom admin panel, and two payment gateways (Cryptomus for crypto, Robokassa for cards), fully deployed via Docker.

On the backend I work with Python, FastAPI, SQLAlchemy, Pydantic, and PostgreSQL. For Telegram bots and async task pipelines I use aiogram and asyncio. On the frontend I build with React 18, TypeScript, Next.js, Vite, and Tailwind CSS. For deployment I use Docker on Linux VPS or Vercel for static frontends. I add Redis for caching and session handling where the architecture requires it. My stack covers the full product layer from API design to UI to infrastructure.

I do not work on WordPress customization, Shopify themes, mobile native apps (iOS or Android), or WebGL and 3D graphics. If your project requires any of these, I am not the right fit, and I will say so upfront rather than start a contract that ends in frustration for both sides.

My typical workflow: you send a brief, I return a fixed-price quote with clear milestones. I deploy a working version on a staging domain early so you can test real functionality before final delivery. Iterations are based on written feedback. Handover includes full source code, a Docker setup, and written documentation so your team can continue without needing a call with me.

I prefer written communication and scheduled calls with a prepared agenda. During active development I send daily written updates. Send me a brief with your project scope and I will reply within one business day.

Steps for completing your project

After purchasing the project, send requirements so Vsevolod can start the project.

Delivery time starts when Vsevolod receives requirements from you.

Vsevolod works on your project following the steps below.

Revisions may occur after the delivery date.

Requirements review

I review your specs, ask clarifying questions, and confirm the full scope of the API before writing a single line of code.

Architecture & schema design

I map out all API endpoints, database tables, and auth flows. You get a clear plan before development starts.

Review the work, release payment, and leave feedback to Vsevolod.