

Senior backend engineer with 18 years building Java/Spring Boot systems. I lead the full lifecycle: requirements, architecture, development, integrations, CI/CD, deployment and long-term maintenance. I maintain 10+ active hydrology and meteorology platforms, REST APIs and IoT solutions, including a satellite-connected dam warning system. Open to remote international B2B contracts.
$25 - $50/hr
Cascavel, Brazil
(GMT-3) Argentina Time (ART), ±4 hours
Fluent in Portuguese • Limited Working Proficiency in English