Marcel Duran

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contact@marcelduran.com github.com/marcelduran

updated Jan 2021

Work Experience

• Google Inc. Nov 2013 - Present

  • Web Performance Engineer @ Search Jul 2020 - Present

    • Desktop Search latency matters.

  • Web Performance Engineer @ Ads Jan 2018 - Jun 2020 (2 years 6 months)

    • Responsible for AdWords web desktop client latency, including instrumentation, analysis, and optimization experiments.

  • Web Performance Engineer @ YouTube Nov 2013 - Jan 2018 (4 year 2 months)

    • Instrumented YouTube web desktop client for web performance analysis.
    • Added several performance metrics to YouTube lifecycle as well as increased accuracy of key metrics and log volumes.
    • Automated the process of detecting regression and alerting engineers before pushing to production.
    • Worked with w3c web perf group to get bytes related information onto resource timing API.

• Twitter Inc. May 2012 - Oct 2013 (1 year 6 months)

  • Web Performance Engineer May 2012 - Oct 2013 (1 year 6 months)

    • Open sourced WebPageTest API CLI/Node.JS wrapper.
    • Analyzed, proposed and implemented several web performance optimizations for Twitter web desktop.
    • Proposed, led and won the Twitter hackweek project: Twisitor

• YSlow Open Source Project May 2012 - Present

  • Core project maintainer.

• Yahoo! Inc. Sep 2008 - Apr 2012 (3 years 8 months)

  • Front End Lead @ Exceptional Performance Team Nov 2010 - Apr 2012 (1 year 5 months)

    • Led YSlow development for several platforms and open source it.
    • Evangelized web performance optimization across Yahoo! and beyond.

  • Front End Engineer @ Search Team Oct 2009 - Nov 2010 (1 year 2 months)

    • Web development of Yahoo! Search features for international markets.
    • Analyzed, proposed and implemented several web performance optimizations.

  • Front End Engineer @ Frontpage Team Sep 2008 - Oct 2009 (1 year 2 months)

    • Web development of core features for yahoo.com portals for Latin America.
    • Responsible for web performance optimization projects.

Education

• B.S., Computer Science, Universidade Presbiteriana Mackenzie, 2007.

Publications

• O’Reilly Using WebPageTest, Web Performance Testing for Novices and Power Users, Oct 2015
• O’Reilly Web Performance Daybook - Volume Two, Jun 2012
• Performance Calendar, Dec 2010,2011,2012
• YUI Blog - Next Gen YSlow powered by YUI, Jul 2011

Conferences

• Uber Destination:Web, Sep 2018
• BrazilJS Conf 2013, Aug 2013
• O’Reilly Velocity Conference 2013, Jun 2013
• O’Reilly Velocity China 2012, Dec 2012
• HighLoad++ Moscow 2012, Oct 2012
• San Francisco & Silicon Valley Web Performance Meetup, Aug 2012
• O’Reilly Velocity Conference 2012, Jun 2012
• O’Reilly Velocity Conference 2011, Jun 2011
• Yahoo! Front End Summit’11, Mar 2011
• O’Reilly Velocity Online Conference 2011, Mar 2011

Side Projects

• WebPageTest-API Wrapper
• YSlow
• BrowserDiet