Daniel Cohen

Experience

• 

  The JCC in Manhattan

  Jan 2008 - Apr 2012

  Senior Web Developer

  Oversaw complete redesign of an over 700 page website. Also, maintained the current site and created new features after the release. Worked in Core JavaScript, jQuery, ActionScript 3, Python and PHP. Key Projects:- search autocomplete serving suggestions with Python- a class listing search page with a number of filters and sorting mechanisms- dynamic page loading- carousels- fly out and sliding menus

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  Live Auctioneers

  Apr 2012 - Jul 2014

  Lead Web Developer

  Participated in complete website redesign. Worked as a full stack developer in a PHP and mySQL environment. Made major decisions about infrastructure architecture in order to handle server load.Key Projects:- search suggestions- dynamic page loading- messaging system- auction setup process revamp- failover architecture- redeveloped Flash live bidding console in AngularJS- made changes to iPhone and Android apps

• 

  Voxy

  Jul 2014 - Nov 2018

  Software Engineer
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  JOOR

  Nov 2018 - May 2021

  Senior Software Engineer

  Led design review meetings. Mentored junior engineers.- Designed and implemented the company’s Analytics data pipeline in GCP.- Developed and participated in the implementation of Joor’s notifications and messaging systems using Kafka architecture.- Designed and implemented a system for processing client files on upload.

• 

  Meta

  Jun 2021 - now

  Senior Software Engineer (IC5)

  Architected and developed solutions to facilitate online experimentation using Ax (Adaptive Experimentation using Bayesian Optimization) for Facebook, Instagram, WhatsApp and internal teams. Coordinated development of UI project for a team of 6 engineers via detailed documents specifying service interactions and timelines.Architected and developed solutions to facilitate online experimentation using Ax(https://github.com/facebook/Ax) for Facebook, Instagram, WhatsApp and internal teams.Developed core Ax functionality and contributed to Ax and botorch open source projects which applied to both online experimentation and hyperparameter tuning.Coordinated development of UI project for a team of 6 engineers via detailed document specifying service interactions.Onboarded multiple engineers, creating detailed ramp-up documentation and technical guidance.Acted as a primary technical expert on online experimentation ecosystem, fielding questions and providing architectural guidance.Developed a ChatBot to survey our users to track launches and deliver critical experiment updates.Promoted to IC5 Feb 2023. Show less