Guided design and implementation of framework for running Spark jobs to analyze data (100s of billion items) from dozens of stores* Worked with engineers from multiple teams to apply analysis for consistency checks, migrations, and backfills* Helped define and review architecture and design directions for both team and multi-team/organization level projects* Worked with other senior engineers to promote tools and processes for streamlined design and development, security and privacy awareness

Designed and implemented messaging and calling applications on Alexa devices* Lead development of on-device components (Android) and backend services (Java)* Worked with product design and management to define development milestones and priorities* Worked closely with engineers on multiple teams to address critical and high-priority projects* Guided other engineers in design and implementation of projects at both application and core platform levels

Helped define strategy for decomposing monolithic search application into microservices* Facilitated communication among a group of senior engineers, developing consensus on architecture approach* Developed proof-of-concept service for dynamically selecting and composing disparate elements of search result page

Scaled and re-architected an internal workflow system used for batch processing for 3rd party sellers* Identified and addressed scaling bottlenecks through optimization, offloading, and parallelization* Increased throughput of legacy (relational database) system by 8X giving necessary time to develop replacement* Designed and lead implementation (Java microservices, NoSQL database) of replacement workflow system now used by dozens of internal teams

Desktop Application GroupDeveloped PC applications for GPS data managment, visualization, planning, and transfer* Windows applications (MFC and WinForms, C++ and C++/CLR) and UI design* Implemented parallelized, tile- and layer- based rendering using modern graphics toolkits* Helped refine and launch apps targeting specialized customer use cases (outdoor recreation, marine navigation)* Identified and resolved various difficult problems, including timing and resource constraints

Developed, published, and presented on techniques and algorithms for performance optimization on multi-processor embedded systems. Work addressed: task allocation; scheduling; application mapping; and memory utilization.Fellowship sponsored by the Consortium for Embedded Systems.

Aided in the design and development of an HL7 interface system for exchanging data with hospital information systems. Designed and implemented a generic system for facilitating, maintaining, and tracking site-specific customizations to the standard interface behavior.