Julien Desfossez

Julien Desfossez Email and Phone Number

Staff Software Engineer @ Lambda
Montreal, QC, CA
Julien Desfossez's Location
Montreal, Quebec, Canada, Canada
Julien Desfossez's Contact Details
About Julien Desfossez

Current role: Software development and systems integration in the GPU cloud control-plane at LambdaLabs.Past: Kernel and system performance analysis, testing and optimization of KVM-based hypervisors. Tech lead of the kernel and performance team at DigitalOcean. Working on the development and testing of the core scheduling kernel patchset.Previous past: Linux kernel and user-space tracing development and analyses (LTTng, perf, ftrace, systemtap), C, PythonOlder past : Kernel and User-space tracing (LTTng developer), IPv6, Network security, Wireless networks, Intrusion Detection, Firewall, Open Source, Linux, BSD, VPNs, Network analysis/design, Unix server administration, Monitoring

Julien Desfossez's Current Company Details
Lambda

Lambda

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Staff Software Engineer
Montreal, QC, CA
Julien Desfossez Work Experience Details
  • Lambda
    Staff Software Engineer
    Lambda
    Montreal, Qc, Ca
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  • Lambda
    Senior Software Engineer
    Lambda Nov 2023 - Present
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  • Northsec
    Co-Vice President Of Infrastructure
    Northsec Jun 2009 - Present
    Montréal
    Volunteer-run computer security competition (CTF) and conference with about ~1000 persons on site. Deploying and managing the network, wifi and servers. Also once in a while creating contests (network, kernel, BPF, botnet).
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  • Digitalocean
    Senior Performance Engineer
    Digitalocean Feb 2018 - Nov 2023
    Montreal, Canada Area
    Hypervisor performance engineering: kernel (tracing, eBPF, contribution to the core-scheduling kernel patchset), system-level optimizations, performance products development, hardware/software automated testing framework, fleet-wide performance analyses and optimizations.Author and maintainer of vmtop (open source, Python).Team lead for the performance engineering team since 2021.
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  • Efficios Inc.
    Software Developer
    Efficios Inc. Jan 2012 - Feb 2018
    Montréal
    Working on the LTTng tracer toolchain (open source Linux kernel and user-space tracer, tools to control, read and analyse the traces).
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  • Révolution Linux
    Analyst
    Révolution Linux Apr 2005 - Jan 2012
    System administration and deployment of large infrastructures for school boards.
  • Hackus
    Organizer
    Hackus Aug 2009 - Apr 2010
    Created advanced networking and botnet contests, and setup the core infrastructure (firewalls, routers and servers) to allow 60+ people to work on the contests for 48h.
  • Magellan Concept
    Php/Mysql Developper
    Magellan Concept Jun 2004 - Sep 2004
    Dynamics components integration in web sites and administration interface programming.

Julien Desfossez Skills

Network Security Virtualization Unix Linux Open Source Python C Operating Systems Git Security Ubuntu System Administration Algorithms Computer Security Firewalls Distributed Systems Vpn Bash Servers Tracing

Julien Desfossez Education Details

Frequently Asked Questions about Julien Desfossez

What company does Julien Desfossez work for?

Julien Desfossez works for Lambda

What is Julien Desfossez's role at the current company?

Julien Desfossez's current role is Staff Software Engineer.

What is Julien Desfossez's email address?

Julien Desfossez's email address is ju****@****ail.com

What schools did Julien Desfossez attend?

Julien Desfossez attended École Polytechnique De Montréal, École Polytechnique De Montréal, Université De Sherbrooke, Université D'artois.

What skills is Julien Desfossez known for?

Julien Desfossez has skills like Network Security, Virtualization, Unix, Linux, Open Source, Python, C, Operating Systems, Git, Security, Ubuntu, System Administration.

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