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You will get FastAPI Backend for Your SaaS Product

Serhii M.Status: Offline
Serhii M. Serhii M.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Serhii, priced and ready to go.
Serhii M.Status: Offline
Serhii M. Serhii M.
Preview image

Let a pro handle the details

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

Project details

I build production-ready FastAPI backends for SaaS products. Not prototypes systems that handle real traffic, real payments, and stay stable at 3 AM.
You get: async FastAPI application, PostgreSQL with SQLAlchemy ORM, JWT auth with role-based access, REST API with auto-generated OpenAPI docs, Docker setup, and a test suite. Clean code, documented, ready to deploy.
Currently running a fintech BNPL platform in production FastAPI + PostgreSQL + Redis, processing live payments 24/7 with 300+ tests. Same engineering standards go into your project.

Best fit for: SaaS MVPs, internal tools, admin platforms, data-heavy backends. If you need a backend that works on day one and scales on day 100 let's talk.
Programming Languages
Python
Coding Expertise
Performance Optimization, Security
What's included
Service Tiers Starter
$500
Standard
$1,200
Advanced
$2,500
Delivery Time 14 days 21 days 30 days
Number of Revisions
235
Design Customization
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Content Upload
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Responsive Design
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Source Code

Frequently asked questions

Serhii M.Status: Offline

About Serhii

Serhii M.Status: Offline
Python Backend Engineer | FastAPI, AWS, Microservices
100% Job Success
Dnipro, Ukraine - 1:55 pm local time
Backend engineer building production fintech systems live payments, multi-tenant SaaS, API integrations that run 24/7.
Currently leading backend on a BNPL platform: FastAPI + PostgreSQL + Redis, processing MTN MoMo payments, Angaza device sync, credit scoring webhooks, React admin dashboard. 300+ tests, Docker/CI/CD, deployed on AWS.

What I build:
- FastAPI backends with async architecture
- Payment integrations (MTN MoMo, PayFast, Stripe)
- Multi-tenant SaaS with RBAC and audit logging
- Background processing pipelines with retry logic
- Docker, AWS deployments, CI/CD infrastructure
- React + TypeScript dashboards

Stack: Python, FastAPI, PostgreSQL, SQLAlchemy, Redis, Docker, AWS, React, TypeScript
I own problems end-to-end - from architecture to deployment. Code that doesn't break at 3 AM.

Steps for completing your project

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

Delivery time starts when Serhii receives requirements from you.

Serhii works on your project following the steps below.

Revisions may occur after the delivery date.

Architecture & Schema Design

Review requirements, define API structure, database schema, and project plan

Core Backend Build

FastAPI app with auth, database models, and core API endpoints

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