Senior Backend Engineer

Marcos Tonina is a Senior Backend Engineer with 15+ years of experience building distributed systems and high-scale backends. He recently worked as a contractor for Apple (Ad Serving) and at Koronet, focusing on performance tuning, fraud detection architecture, and cloud migrations. He has a strong background in event-driven architectures, AWS/GCP, Kafka, and Kubernetes, and is experienced working with US and international teams in remote-first environments. He is looking for a senior remote role where he can contribute to core architecture decisions, scalability challenges, and technical leadership.