Open to opportunities

Leonardo Castillo Fernandez

@leonardocastillofern

Message

I build enterprise platforms, real-time systems, and cloud-ready backend services.

Cuba

Message

What I'm looking for

I'm looking to build enterprise and cloud-delivered software, especially backend or full-stack platforms involving microservices, real-time systems, IoT integrations, and production observability.

I've built an internal engineering project-management platform at Instituto de Proyectos Hidráulicos, covering tasks, technical documents, materials, costs, drawings, and regulatory compliance.

I designed ASP.NET Core APIs in an event-driven microservices architecture with MassTransit and RabbitMQ, using PostgreSQL and PostGIS for relational and geospatial data. I also implemented Keycloak/JWT authentication, SignalR real-time metrics, Razor View reports, and observability with Grafana, Jaeger, and Sentry.

My academic work includes IoT energy monitoring, an interactive electrical-network simulator, and motor-fault prediction using MQTT-connected Raspberry Pi devices, TensorFlow, and Scikit-Learn.

Experience

Work history, roles, and key accomplishments

Electrical Engineer – Software Development

Instituto de Proyectos Hidráulicos

Jan 2024 - Nov 2025 (1 year 10 months)

Developed an internal platform for end-to-end engineering project management, including tasks, technical documents, materials, costs, drawings, and regulatory compliance. Designed maintainable ASP.NET Core APIs in an event-driven microservices architecture using MassTransit and RabbitMQ.