Laurent Demailly

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