Full-Stack MVP: FastAPI + PostgreSQL + Auth + Billing, 3 Weeksyoungwoo lee
You get a working product with real users on it in three weeks — auth, database, billing and deployment included — built to be extended, not thrown away after the demo.
What's included
A one-hour scoping session to cut the idea down to the first thing worth charging for. Backend in FastAPI or Flask with PostgreSQL, SQLAlchemy and Alembic migrations, designed multi-tenant from the first migration if you will ever have more than one customer. Authentication, sessions and roles. Subscription billing with tiers, trials, dunning and idempotent webhooks so a redelivered event never double-charges or corrupts a plan. A clean server-rendered or lightweight JS front end (Jinja2 + Alpine.js, or your React if you already have one). Background jobs with Redis/RQ when work must run unattended. A test suite and GitHub Actions CI on every push. Docker deployment on your host, Sentry monitoring, and a handover doc you can give the next engineer.
Good fit for
Founders who need a fundable or sellable v1, not a prototype; internal tools that must handle real data and real money; and teams replacing a no-code stack that has hit its ceiling.
Why me
I built Revix solo from zero to production in 53 days: 148 routes, 31 tables, 14 background job modules, recurring billing, and 2,245 tests. Along the way I found that row-level security had never actually run, replaced nineteen unsafe writers with one merge-under-lock path, and made webhooks idempotent with an event ledger. The case studies on my profile describe each of those in detail.
Pricing
From $4,500 for a scoped MVP delivered in about three weeks. Larger scopes and ongoing development after launch are quoted after the scoping session, usually at $50–75/hr.
Starting at$4,500
Duration3 weeks
Tags
PostgreSQL
Python
Backend Engineer
Fullstack Engineer
SaaS
Service provided by
youngwoo lee proSeoul, South Korea
Full-Stack MVP: FastAPI + PostgreSQL + Auth + Billing, 3 Weeksyoungwoo lee
Starting at$4,500
Duration3 weeks
Tags
PostgreSQL
Python
Backend Engineer
Fullstack Engineer
SaaS
You get a working product with real users on it in three weeks — auth, database, billing and deployment included — built to be extended, not thrown away after the demo.
What's included
A one-hour scoping session to cut the idea down to the first thing worth charging for. Backend in FastAPI or Flask with PostgreSQL, SQLAlchemy and Alembic migrations, designed multi-tenant from the first migration if you will ever have more than one customer. Authentication, sessions and roles. Subscription billing with tiers, trials, dunning and idempotent webhooks so a redelivered event never double-charges or corrupts a plan. A clean server-rendered or lightweight JS front end (Jinja2 + Alpine.js, or your React if you already have one). Background jobs with Redis/RQ when work must run unattended. A test suite and GitHub Actions CI on every push. Docker deployment on your host, Sentry monitoring, and a handover doc you can give the next engineer.
Good fit for
Founders who need a fundable or sellable v1, not a prototype; internal tools that must handle real data and real money; and teams replacing a no-code stack that has hit its ceiling.
Why me
I built Revix solo from zero to production in 53 days: 148 routes, 31 tables, 14 background job modules, recurring billing, and 2,245 tests. Along the way I found that row-level security had never actually run, replaced nineteen unsafe writers with one merge-under-lock path, and made webhooks idempotent with an event ledger. The case studies on my profile describe each of those in detail.
Pricing
From $4,500 for a scoped MVP delivered in about three weeks. Larger scopes and ongoing development after launch are quoted after the scoping session, usually at $50–75/hr.
$4,500