Production-ready FastAPI backend with JWT auth, PostgreSQL and Docker

Sold by Zinn Digital

A robust FastAPI backend featuring JWT auth, PostgreSQL, Alembic migrations, pytest suite, structured logging, and Docker Compose, ready in 3 days.

v1:60070b86de0e Production-ready FastAPI backend with JWT auth, PostgreSQL and Docker

At a glance

Price: $562.99
Delivery: Delivered in 3 days
Seller: Zinn Digital
Sold: 0

About this listing

If you have a frontend, a data model, or an app idea but need a backend, this service delivers a reliable, production-ready foundation ready for deployment.

Built using FastAPI, the API features JWT authentication and role-based access control built-in. Data management uses SQLAlchemy models connected to PostgreSQL, alongside Alembic migrations to safely update your schema across environments. Core workflows are protected by pytest tests to ensure stability before users access the platform.

AI tools assist during development to accelerate boilerplate creation, test scaffolding, and documentation drafts, while system architecture, code reviews, and quality assurance are managed directly by hand.

The Docker Compose setup ensures the application runs reliably on a laptop, a colleague's computer, or a Linux server, eliminating environment discrepancies. Structured logging comes built-in to track application activity in real time. Cloud deployment is also available upon request.

This offering fits new projects and existing APIs that require enhancements, such as better security, proper migrations, improved test coverage, or a cleaner codebase.

What makes this backend production-ready

JWT authentication and role-based access control for secure, fine-grained permissions
SQLAlchemy models on PostgreSQL with schema changes managed through Alembic
A pytest suite covering core flows such as login, business operations and failure scenarios
Structured JSON logging for visibility in staging and production
A Docker Compose setup verified across Linux, macOS and Windows
Complete OpenAPI documentation generated automatically by FastAPI, ready for your frontend team

Delivery takes 3 days, and a single revision is included. Whether you are an independent founder, a small product team, or a growing startup that has outgrown a temporary API, this service gives you a codebase ready to build on.

What you can buy

Production-Ready FastAPI Backend

$562.99
Or pay €502.04 · £420.44 at today's rate — the rate is locked when you add it to your basket.

A complete, documented REST API backend with auth, database layer, migrations, tests, logging, and Docker Compose — ready to run on any environment. - FastAPI REST API with full OpenAPI documentation - JWT authentication and role-based access control - SQLAlchemy models on PostgreSQL with Alembic migrations - Pytest coverage for critical paths and auth flows - Structured JSON logging for production observability - Docker Compose setup for local and server environments - 1 revision

Delivered in 3 days

Revisions included: 0

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Questions and answers

What information must I supply prior to commencement?

Sharing your data model or schema, even as a basic outline of entities, along with an overview of user roles and permissions, plus any current frontend or mobile API contracts is beneficial. Additional context helps tailor the API more accurately to your product.

Will the code be organised and simple for my developers to maintain?

Yes. The project adheres to a standard FastAPI structure, keeping routers, schemas, models, services, and dependencies distinct. The automatically generated OpenAPI documentation enables your frontend developers to inspect and test endpoints instantly without needing extra documentation.

Is it possible to deploy the backend onto my preferred cloud host?

Cloud deployment can be arranged on request. Simply inform us of your chosen platform, such as AWS, GCP, DigitalOcean or Railway, when placing your order so the details can be agreed beforehand.

What is the exact definition of 'pytest coverage for critical paths'?

This means automated tests focused on the authentication process, including registration, login, token refresh, and permission checks, alongside key business functions and common error scenarios. It does not provide full line-by-line coverage for every endpoint, but concentrates on the most critical areas prone to live issues.

Does the Docker Compose configuration function correctly on Windows?

Yes, the setup has been tested on Linux, macOS and Windows. Windows and macOS operators require Docker Desktop, and the project uses standard Compose v2 syntax.

Which database is utilised and can it be replaced?

PostgreSQL is supplied by default. Because SQLAlchemy is independent of a single database engine, migrating to an alternative supported database is possible later on, although the current implementation, defaults and Alembic migrations are specifically designed for PostgreSQL.

What occurs if I require modifications following handover?

One single round of revisions is provided, addressing tweaks within the agreed scope, such as modifying an endpoint signature, introducing an omitted field, or resolving a bug in the supplied code. Extra features or expanded scope requirements will constitute a separate order.

How are AI tools employed within this service?

AI utilities assist in generating boilerplate, outlining tests, and drafting documentation. All architectural decisions, code organisation choices, security controls and quality checks are verified and approved personally, meaning AI accelerates delivery without compromising quality or precision.