Rafael Dias Backend Engineer

Backend developer focused on Python, Django and systems architecture. I work on scalable applications, ETL pipelines, integrations and the evolution of critical financial flows — currently at Afya, contributing to Afya iClinic.

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10+ years of experience
Afya
Computer Science · UNIDERP
Postgrad — Web Development with Python · FETES

Projects I've worked on

Afya iClinic

Leading practice-management platform for clinics and medical offices. Meaningful contribution to backend, ETL, integrations and financial flows.

Python
Django
AWS
Celery
Kubernetes
Docker
Metabase
ETL

About the product Private repository

Afya Shosp

Clinic-management platform (scheduling, electronic health records, administrative processes). Work on financial management, integrations and architecture evolution.

PHP
MVC
REST
AWS
Docker

About the product Private repository

Saniagro

Animal health and defence system of IAGRO (Mato Grosso do Sul): livestock movement, vaccination and traceability. I contributed to Saniagro, the desktop system the current e-Saniagro grew out of, at SGI.

About the product Private repository

Conta Corrente Web

Development and maintenance of a customer current-account system for rural accounting offices, migrating from a Delphi desktop application to the web.

FastAPI
PostgreSQL
React
TypeScript
Vite

Private repository

Institutional system for public entities

Development of 3+ institutional websites for public bodies in Mato Grosso do Sul — such as IMPC, Câmara de Sonora and Câmara de Coxim: news, transparency, legislation and citizen services.

PHP
HTML
CSS
JavaScript
Bootstrap

Private repository

Inteco Tecnologia

Corporate website for Inteco Tecnologia, a public-sector software house. Presents the company, its systems (accounting, payroll, tax collection, digital processes) and contact channels.

PHP
HTML
CSS
JavaScript
Bootstrap

About the product Private repository

Knowledge Base / Blog

A knowledge base of 25+ technical articles on Python, Django, architecture, cloud and AI, published with MkDocs Material.

MkDocs Material
Python
GitHub Pages

About the product View code

AI Agents Demo

Practical demos of how AI applications evolve — from simple LLM usage to full agent architectures.

Python
LLMs
AI Agents
Prompt Engineering

View code

What people say about my work

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Experience

Backend Engineer
· Afya · Afya iClinic

Meaningful contribution to the Afya iClinic backend, a leading practice-management platform for clinics and medical offices, focused on the Django admin (BackOffice), building public and internal APIs and, lastly, data import with ETL.
View responsibilities and skills Hide responsibilities and skills
- Building applications with Python and Django
- ETL pipelines for database migration and conversion
- Data analysis and transformation with Pandas and Jupyter Notebooks
- Integrations with AWS services (S3, SQS, Lambda, EventBridge)
- Asynchronous integrations with SQS, EventBridge and Celery
- Maintaining BackOffice financial and administrative processes
- Automated testing and code-quality upkeep
- Docker and Kubernetes environments; deploys with ArgoCD and Terraform
- Observability with Elasticsearch and Grafana
- Using AI (Claude Code, Cursor, ChatGPT) in development: LLMs, Prompt Engineering and Agents
- Code reviews, CI/CD pipelines and collaborative development
- Python
- Django
- Pandas
- AWS
- Celery
- Docker
- Kubernetes
- Terraform
- ArgoCD
- Elasticsearch
- Grafana
Developer
· Afya · Shosp

Work on developing and maintaining Shosp, a clinic-management platform (scheduling, electronic health records and administrative processes). Joined before the Afya acquisition and stayed on; promoted internally to Afya iClinic.
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- Backend in PHP (OOP) with MVC architecture
- Building and consuming REST APIs
- Integration with AWS services (S3, SQS, EventBridge)
- Containerization with Docker and deployment on AWS Elastic Beanstalk
- Shell scripting
- Unit testing
- Observability and failure diagnosis with Sentry
- Performance, scalability and reliability improvements
- PHP
- MVC
- REST
- AWS
- Docker
- Elastic Beanstalk
- Sentry
Web Developer (remote — Portugal)
· Bright Minds

Remote work developing and maintaining web applications for clients in Portugal, across the full cycle — from requirements gathering to delivery and support.
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- Applications with PHP, Laravel and MySQL
- New features and bug fixing
- APIs and system-to-system integrations
- Responsive newsletters in HTML and CSS
- Adapting layouts for mobile devices
- Documented functional testing
- Requirements gathering, prototyping and scope/deadline definition
- Client support and technical assistance
- PHP
- Laravel
- MySQL
- HTML5
- CSS3
- JavaScript
- jQuery
- Bootstrap
Systems Analyst
· Inteco Tecnologia

Deployment, migration, maintenance and evolution of systems for public-sector bodies — city halls, municipal councils, institutes and agencies across many municipalities.
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- Database conversion and migration (MySQL, PostgreSQL, Firebird)
- Web applications with PHP 7 and Laravel
- Internal automations and tools in Delphi
- Reporting with JasperReports (JasperServer, iReport)
- System deployment, configuration and migration at client sites
- Requirements gathering, client support and technical assistance
- Owned the Social Assistance, Health, Transparency Portal, e-SIC and institutional-portal systems
Grupo Assessor representative for the Araçatuba/SP region — point of contact for client relationships and for following up on deployments and projects.
- PHP 7
- Laravel
- MySQL
- PostgreSQL
- Firebird
- Delphi
- JasperReports
- Linux