You will get Async Banking API with FastAPI + JWT Authentication
Project details
I developed a complete asynchronous Banking REST API using FastAPI with a strong focus on security, performance, and real-world business rules.
Main Features:
Secure user registration and JWT-based authentication
Deposit and withdrawal operations with proper validations
Complete account statement with current balance and transaction history
Fully asynchronous architecture (async/await)
Persistent data with SQLAlchemy and SQLite
What sets me apart:
Clean, well-structured and production-ready code
Solid error handling and business logic validation
Interactive Swagger documentation included
This API gives you a secure, scalable and reliable backend foundation that can be easily extended for fintech applications, personal finance tools or any transaction-based system.
You will receive clean code, full documentation, and a ready-to-use API that saves you development time and reduces common backend headaches.
Main Features:
Secure user registration and JWT-based authentication
Deposit and withdrawal operations with proper validations
Complete account statement with current balance and transaction history
Fully asynchronous architecture (async/await)
Persistent data with SQLAlchemy and SQLite
What sets me apart:
Clean, well-structured and production-ready code
Solid error handling and business logic validation
Interactive Swagger documentation included
This API gives you a secure, scalable and reliable backend foundation that can be easily extended for fintech applications, personal finance tools or any transaction-based system.
You will receive clean code, full documentation, and a ready-to-use API that saves you development time and reduces common backend headaches.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$45
|
Standard
$95
|
Advanced
$195
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 8 days |
Number of Revisions | 2 | 4 | 6 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
Optional add-ons
You can add these on the next page.
Deploy na nuvem
(+ 2 Days)
+$40
Integração com PostgreSQL
(+ 1 Day)
+$60
Frontend básico (React)
(+ 2 Days)
+$150Frequently asked questions
About Leandro Da Silva
Web Developer | FastAPI Backend & Python
Campinas, Brazil - 6:25 am local time
Desenvolvedor Web especializado em backend com Python e FastAPI. Crio APIs REST assíncronas, seguras e escaláveis, com foco em performance, autenticação JWT e regras de negócio bem definidas.
Tenho experiência em desenvolver soluções completas, como APIs bancárias com cadastro de usuários, transações (depósitos e saques), extratos e persistência de dados. Utilizo as melhores práticas do mercado: async/await, SQLAlchemy, validações robustas e documentação interativa com Swagger.
Principais habilidades:
FastAPI & Python
APIs REST assíncronas
Autenticação JWT + bcrypt
SQLAlchemy (async) e SQLite
Validações de negócio e tratamento de erros
Arquitetura limpa e código bem estruturado
Estou pronto para ajudar você a construir ou melhorar backends confiáveis para aplicações web, fintech, sistemas de gestão ou qualquer projeto que precise de uma API robusta e bem documentada.
Aberto a novos desafios e disponível para projetos freelance!
Steps for completing your project
After purchasing the project, send requirements so Leandro Da Silva can start the project.
Delivery time starts when Leandro Da Silva receives requirements from you.
Leandro Da Silva works on your project following the steps below.
Revisions may occur after the delivery date.
Reunião de Requisitos
Analisar as necessidades do cliente, esclarecer dúvidas e definir o escopo exato da API.
Projeto da Arquitetura
Criar a estrutura do projeto, definir modelos de dados (SQLAlchemy), rotas e esquema de autenticação JWT.