o
o_rk007

Rafael O

@o_rk007

Backend Software Developer Tech Lead

Brasil
Português
Algumas informações são exibidas no idioma inglês.
Sobre mim
Backend Developer specializing in Python, Node.js, APIs and automation. I build reliable workflow automations, integrations and backend tools for businesses. As Tech Lead on a project for Vale S.A., I helped reduce an operational process from 2 hours to 5 minutes.... Saiba mais

Habilidades

o
o_rk007
Rafael O
offline • 
Tempo médio de resposta: 2 horas

Conheça meus serviços

Automações e Agentes
I will automate any task, process or workflow
A partir deUS$ 50 /projetoMais detalhes

Portfólio

Experiência profissional

Vale

Tech Lead & Software Developer — Railway Operations Automation

Vale • Freelance

Apr 2025 - Oct 2025 • 6 mos

Acted as Tech Lead and developer on an automation project for Vale S.A., contributing to the technical definition and development of a desktop application focused on planning and optimizing railway operations. Developed, using JavaScript, Node.js, and Electron, an application capable of importing and processing Excel spreadsheet data and automatically generating operational schedules. Implemented a scheduling algorithm that considered arrival times, operation durations, idle periods, maintenance windows, and terminal availability. Developed schedule visualization through Gantt charts, pending task analysis, operational capacity calculations, and a dashboard for train management. Implemented local configuration persistence, inter-process communication within Electron, and PDF report generation. Automated a process that previously took approximately 2 hours, reducing its execution time to around 5 minutes.