Karl Sabo Email & Phone Number

Boston, Massachusetts, US

Boston, Massachusetts, US

Albuquerque, New Mexico, US

• Designed a scalable, cost-optimizing, batch execution system to handle job scheduling, compute capacity provisioning, and job execution across thousands of HPC nodes
• Overhauled backend infrastructure including optimizing database tables to support write-intensive HPC batch data flows
• Modernized a constellation of web services to improve testability, visibility, throughput, and to utilize a common API framework
• Implemented a cross-platform file syncing algorithm to provide fast, robust, auto-resuming file transfers over DoD-authenticated networks and HPC file systems
• Leveraged Docker containerization for consistent execution across heterogeneous HPCs
• Migrated and refactored a collection of Java repositories from Maven to Gradle, reducing build times by 8x and streamlining the introduction of new repositories

• Developed 4 games including Altitude, an online action game for Windows, Mac, and Linux that sold over 100,000 copies and earned an IGC award for Technical Achievement
• Created a tool to manage, update, monitor, and scale AWS infrastructure
• Constructed an OpenGL user interface toolkit with support for skin-based customization and high-performance animation of a full suite of components
• Implemented a server backend in Java and MySQL with custom caching logic that successfully scaled to tens of thousands of simultaneous users
• Designed a VOIP chat room utilizing open-source speech codecs for real time voice communication
• Converted Android projects to iOS by creating a custom Java to C++ transpiler and implementing native code for threading, networking, and display management

US

• Provided expert guidance and technical solutions to customers of BEA Weblogic Server

Bethesda, MD, US

• Led architecture, design, and development of several web services for missile defense
• Received an award for integrating warning and defense systems into a common codebase