Freddy R.

JVM Modernization | Legacy Java to High-Performance Scala

Is your legacy Java monolith slowing down your deployments or driving up cloud costs? I help companies modernize their tech stack using Scala, Cats Effect, and Akka/Pekko to build resilient, functional systems that scale. Moving from Java to Scala isn’t just a syntax change—it’s a performance shift. I specialize in the "Strangler Pattern," allowing you to migrate critical modules into high-performance microservices without interrupting your production environment. Why work with me? - Pure Functional Expertise: I leverage Cats and Cats Effect to build type-safe, asynchronous systems that eliminate entire classes of runtime bugs. - High-Concurrency Mastery: Using Akka and Pekko, I design actor-based systems capable of handling massive throughput and real-time data processing. - Modern Data Stack: Deep experience with Kafka for event-streaming and Apache Pinot for real-time analytics. - Cloud Optimization: I don't just write code; I tune the JVM. I’ve helped clients slash GCP/AWS spend by optimizing resource allocation and implementing smart autoscaling. A "Big Tech" partner for your US team: Based in the EU, I provide a strategic time-zone overlap. I can build while your US team sleeps and be available for syncs during your morning—creating a high-velocity, 24-hour development cycle.