Sam Luckenbill

Experience

• 

  Yale University

  Sept 1998 - Jun 2000

  Computing Assistant

  - On-call computing support for students and maintenance of large computing clusters

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  MicroDisplay

  May 2001 - Aug 2001

  Digital Design Intern

  - VHDL code and debugging of Microdisplay device driver

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  Reservoir Labs, Inc.

  Oct 2002 - Feb 2007

  Engineer

  - Development and project management of the Alef parallel SAT solver- Hardware feasibility studies for a computational chemistry supercomputer - Debugging of streaming compiler for Stanford’s Imagine processorhttps://www.reservoir.com/research/publications/?cat=37

• 

  Pivotal Labs

  Feb 2007 - May 2007

  Engineer

  - Helped restructure database load and introduce caching to improve scalability at Twitter - Co-author of CacheMoney Rails plugin for write-through and read-through caching - Ruby on Rails programming and Agile training - Project lead for BringLight, a social network for philanthropy - Contributions to the Pivotal Social Media Platform

• 

  Twitter

  Jul 2009 - Mar 2018

  I was primarily responsible for building consumer product engineering teams and groups to work on products where our users consume content. This included the Timelines, Search, Discovery, Recommendations, and Geo groups. The organization had teams in SF and NYC and ranged in size from 100 to 150 engineers. I improved the organization's structure and efficiency while we built and launched:- The first relevance-based content in the Home timeline- Twitter's first product for logged-out users- A complete searchable archive of Tweets- A revamped trends experience that gives users better context- A deal with Foursquare resulting in POI geotagging features- An improved Twitter Cards platform- Numerous measurable quality improvements across recommendations productsA few articles on things my organization built during this time:https://blog.twitter.com/2016/never-miss-important-tweets-from-people-you-followhttps://blog.twitter.com/2015/twittercom-gets-a-refreshhttps://blog.twitter.com/2014/building-a-complete-tweet-indexhttps://blog.twitter.com/2015/building-a-new-trends-experiencehttp://fortune.com/2015/03/23/twitter-foursquare-data/ Show less In 2011, we focused on a series of product launches: relevance-filtered tweets, images and videos in search, search one-boxes, and finally the new #Discover tab. My role was to help grow the search team, increase site reliability and product quality, and provide opportunities for career growth and personal development. I also spent several months in New York helping to open Twitter's first remote engineering office.https://blog.twitter.com/2011/the-engineering-behind-twitter-s-new-search-experience Show less

  • Senior Director Of Engineering

    Mar 2017 - Mar 2018

  • Director of Engineering, Search Infrastructure

    May 2015 - Mar 2017

  • Director of Engineering, Consumption

    Jun 2014 - May 2015

  • Director of Engineering, Timelines

    Jan 2014 - Jun 2014

  • Director of Engineering, Search

    Apr 2013 - Jan 2014

  • Senior Engineering Manager, Search Infrastructure

    Aug 2012 - Apr 2013

  • Engineering Manager, Search

    Dec 2010 - Aug 2012

  • Tech Lead, Search

    May 2010 - Dec 2010

  • Member of Technical Staff

    Jul 2009 - May 2010