LD

Laurent Demailly

Cloud Engineering at Roku Inc.

Saratoga, California

Overview

Work Experience

  • Cloud Engineering

    2020 - 2024

    Bringing Service Mesh, Observability, Operability, Automation, Security, Multi-Region and more to accelerate Roku cloud services development

  • Staff Engineer

    2017 - 2018

    Istio (https://istio.io) service mesh. Open source: https://github.com/istio. Lead for Performance and Scalability. Fortio (https://fortio.org/) author.

  • Software Engineer Technical Lead

    2011 - 2017

    2015-2017: Team Lead for Stargate (internal code name) Stargate is about seamlessly managing stateful services, starting with RocksDB based databases. It enables automatic backups and recoveries, peer2peer data transfers, shard movement and management, optimizes for cross region traffic, etc... In 2015: We started by building WDT, Warp speed Data Transfer, a open source library and command line tool for ultra high performance data transfers: https://github.com/facebook/wdt In 2016 we focused on Stargate per se and in June 2016 we had the first production use case with 2 more since on thousands of servers and more to come. 2011-2014: Wormhole Team Lead https://www.facebook.com/notes/facebook-engineering/wormhole-pubsub-system-moving-data-through-space-and-time/10151504075843920

  • Sr. Principal Software Engineer, Architect

    2006 - 2011

    2006-2009: Ad Systems, Media Monetization Engineering (MME), Advertising Products Group (APG): User Data Store (UDS) Engineering Lead; Architect. Created automatic capacity addition and automated failover for a live real time distributed data store (UDS). The team I lead also made significant improvements to the replication system, the internal index structures and garbage collection processes of this log structured (supports 1:1 read/write ratio) high performance data store. 2008: Promoted to director level IC equivalent (IC6). Since 2009: Cloud Computing Architect (UDS/UPS/messaging) and technical leadership - yet still producing hands on deliverables when not mentoring teammates or assisting with production or other troubleshooting. Created selective intelligent worldwide cross data centers replication and server side data store append/increment operations for UDS. Supported the design and implementation of the event driven plan and execution engine and performance and architectural improvements for UPS (broker service). Also key contributor to Yahoo's real time advertising, targeting, location, personalization services. Our system did more than 50 billion queries every 24h, with a few milliseconds response time - one of the largest online serving system in the world

  • Principal Software Engineer

    2003 - 2006

    RTM Messaging, Advertising, Personalization platform and specialized session servers tracking billions of impressions and events/day

  • Manager of Software Development

    2003 - 2003

  • Founding Engineer; Sr Architect; Platform Software Manager

    1999 - 2003

  • Staff Software Engineer

    1997 - 1999

  • Lead Software Engineer

    1996 - 1997

  • Research Engineer

    1991 - 1996

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