j
jeferson681

Jeferson Sousa

@jeferson681

Backend Developer: APIs, Automation e Integrations

Brazil
Portuguese, English
About me
I help build and stabilize Python backends with reliable APIs and clean structure. I work on real backend tasks like CRUD endpoints, database integration, and fixing broken API behavior. • Build and improve FastAPI and Django endpoints • Fix API bugs and inconsistent responses • Set up Docker and CI/CD (GitHub Actions) • Integrate external services (payments, WhatsApp, Discord, Telegram) • Improve performance and reliability • Add tests to prevent regressions Focus: clean CRUD logic, consistent API responses, and maintainable code.... Read more

Skills

j
jeferson681
Jeferson Sousa
Offline • 

See my services

API & Integrations
I will fix python backend bugs and API errors
From$25 / projectMore details
API & Integrations
I will integrate apis and webhooks into your python backend
From$10 / projectMore details

Work experience

Self_Employed

Independent Backend Developer (Python)

Self Employed • Self-employed

Dec 2024 - Present • 1 yr 9 mos

Designed and built backend applications using modular and maintainable architecture. Developed REST APIs with FastAPI, PostgreSQL and OpenAPI following clean architecture principles. Set up CI/CD pipelines with GitHub Actions including automated testing, coverage checks and basic security scanning. Implemented automated unit, integration and end-to-end tests to improve software quality. Containerized applications with Docker using environment-based configuration. Implemented structured logging and observability with Prometheus, Grafana and Loki to improve reliability and monitoring.