Rafael Rabello

Profile

Software Engineer with 10+ years of experience developing and maintaining business-critical applications, primarily with C# and .NET. Experienced in backend development, REST APIs, database optimization, system integration, automation, and modernization of legacy applications.

Strong background in enterprise software and agricultural ERP systems, with additional hands-on experience designing and operating self-hosted infrastructure using Docker, Proxmox, Nginx, and Linux.

Skills

Backend & Application Development
C#, .NET, ASP.NET MVC, NHibernate
REST APIs, system integration, backend services
JavaScript, jQuery, Node.js, React
Legacy application modernization
Databases
SQL Server, Oracle, PostgreSQL, SQLite
SQL query optimization, reporting, data migration
DevOps & Infrastructure
Docker, Proxmox VE, Linux
Nginx, Nginx Proxy Manager, Cloudflare Tunnels
Microsoft Azure (App Services)
GitHub Actions, Jenkins, CI/CD
Testing & Quality
Selenium, Playwright
Automated UI testing, regression testing
Engineering Practices
Backend automation, system integration
CI/CD pipelines, performance optimization
Enterprise software development

Experience

Software Engineer

Senior Sistemas – 2024–Present

Developed and maintained enterprise ERP modules using C# and ASP.NET MVC.
Designed and implemented backend services, REST APIs, and integrations between internal systems.
Optimized complex SQL queries and database operations to improve application performance.
Contributed to modernization and architectural improvements of legacy applications.
Developed automated solutions for recurring backend and operational processes.

GAtec - Gestão Agroindustrial – 2018–2024

Developed and maintained enterprise ERP modules using C# and ASP.NET MVC.
Improved database performance, reporting solutions, and data-intensive operations.
Collaborated with business teams to translate operational requirements into technical solutions.
Worked on system integrations, maintenance, and modernization of existing applications.

Freelance Developer / Sysadmin

Self-Hosted Projects – 2021–Present

Designed and operated a self-hosted infrastructure using Proxmox, Docker, Nginx, Linux, and Cloudflare Tunnels.
Created automation scripts for VM backups, DNS management, and infrastructure maintenance.
Designed and implemented web applications using Node.js and React.
Automated deployment processes using GitHub Actions and Jenkins.

Systems Analyst (VB6)

GAtec - Gestão Agroindustrial – 2014–2018

Developed and maintained legacy ERP modules using Visual Basic 6.
Provided technical support, troubleshooting, and system enhancements for enterprise applications.

Education

B.Sc. in Computer Science

Anhanguera Educacional – 2011–2015

Languages

Portuguese – Native
English – Advanced / Professional working proficiency