Worked on a cloud testing framework to find concurrency and fault tolerance bugs in modern distributed systems.

I was responsible for the service-oriented architecture of a social media advertising platform used by one-third of the Fortune 100. Technical challenges include designing for growth, system boundary identification, and distributed systems. Non-technical challenges involve coordinating development efforts of a 30 person dev team and working with product managers to turn designs into scalable and maintainable systems. Most recently I worked to minimize latency and improve accuracy in SocialCode's client-facing reporting system.

I was responsible for a majority of the UX design and much of the implementation of Stella Modeler for the iPad, a user friendly, back-to-basics system dynamics modeling tool in the spirit of the original Stella. I was instrumental in stabilizing and speeding up isee's C++-based simulation engine, STEAM. Finally, I fixed a number of issues in isee's legacy codebase, carefully investigating root causes of subtle problems and understanding the implications of fixes.

I was responsible for managing, implementing, debugging and scaling key systems at SocialCode. I was a team lead responsible for key parts of SocialCode’s advertising platform. I also served as interim lead for the operations team, which builds and manages the 100+ server, EC2-based infrastructure. I designed and implemented a service that handled more than 60k HTTP requests per hour with 99.999% availability. Additionally, I was one of two recipients of the first ‘Stellar SocialCoder’ quarterly award recognizing significant (positive) impacts on SocialCode.

I've been integral in scaling out, stabilizing and developing new features of Forio's Java-based platform for online, interactive learning environments. I designed and implemented a clustered configuration of our platform for an event serving all 800+ incoming MBA students at the Wharton School of Business, which performed flawlessly. Currently, I'm working on pulling a native-library dependency out of our webapp and into a standalone service written in C. This will enable us to move to 64-bit JVMs and remove a source of app server crashes.

I ported HART's core enterprise messaging framework to the ARM platform, quickly coming up to speed on a large C++ codebase. This involved identifying, debugging and subsequently fixing structure alignment and padding issues. I identified and resolved latency issues across an array of networked applications. Later I updated a Linux kernel patch-series for ARM PXA support from the 2.6.21 to 2.6.32 kernel, which was subsequently picked up by the OpenWRT project.

I developed an activity for the Sugar platform that allowed children to do basic system dynamics modeling. Additionally I did a modest amount of work to support their platform release, including fixing an issue causing a 10+ second delay in activity startup time. After my internship I stayed involved, rewriting the Python-based boot animation code in C, resulting in a 35% increase in boot speed. This has been shipped on hundreds of thousands of laptops.