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Marios graduated with a BS in Computer Science from MIT and scaled Hotmail's storage infrastructure to 100K+ servers and reduced Hotmail’s storage requirements by 7% via a novel compression algorithm. While at Microsoft, Marios also developed an adaptive throttling mechanism that would force background maintenance processes (e.g. garbage collection) to back-off if a surge in higher priority activity (e.g. users) was detected. His algorithm would adapt on the environment it was running, so it could be deployed on heterogeneous hardware as-is, without needing to tune it. The result was 20% reduction in peak loads and Marios received a Microsoft Innovation Award for his algorithm. Marios’ friends consider him a world-class chef.
Worked on the Hotmail (now Outlook.com) storage platform, responsible for the application server, metadata + blob storage for Hotmail's 200M+ users. I helped grow the backend from a couple thousand servers to over six figures. My contributions were around storage optimization (better blob compression algorithms), decreasing load saturation (adaptive throttling of heavy background processes), improved reliability (redundant storage of data), load balancing (eliminating data hotspots/better data locality), improving latency (predictive prefetching, improved metadata retrieval), spam reduction (personalized filters for grey email aka newsletters) as well as creating better tooling for our ops team.