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Principal Software EngineerPrincipal Software Engineer
Amazon.com · Full-timeAmazon.com · Full-timeMar 2005 - Dec 2021 · 16 yrs 10 mosMar 2005 - Dec 2021 · 16 yrs 10 mosThe Cloud (mostly Seattle)The Cloud (mostly Seattle)- • Recruiting Technology. Designed and delivered state-of-the-art automated assessments platform, and data handling systems for use of ML in candidate placement and matching. Improved stability and ability to iterate for candidate-facing systems that support millions of applications per year.
• Amazon Go stores. Wrote experimental code and measurement system for lower-cost cameras. Worked on camera and sensor fusion for planogram (item shelf placement) to support fully-automated checkout and replenishment.
• AWS IoT. Primary owner of message transformation and routing engine to handle millions of messages per second. Focused on reliability, latency, and cost (including rework of customer pricing). Worked directly with enterprise customers, and developed strategy for launch and build of AWS Greengrass (edge compute), Device Analytics, and many security and management features for fleets of heterogeneous low-power devices.
• Alexa knowledge graph and APIs. Integrated Evi, an open-domain question-answering system into Amazon Alexa, including knowledge and fact management, and NLU aspects. Improved latency by an order of magnitude, allowing it to be incorporated into Alexa at launch. Instrumental for launch of Alexa Skills API for 3p developers.
• Fulfillment by Amazon. Wrote (with one other engineer) initial 3p inventory tracking system. Designed and built multiple critical systems for Amazon and 3p fulfillment. Direct and indirect engineering as FBA grew from 6 people (2 engineers) to hundreds, from initial launch to $billions in GMS.
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