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Julien Desfossez Email & Phone Number
Staff Software Engineer
at
Lambda
1 work email found
@digitalocean.com
LinkedIn matched
✓ Verified July 2026
4 data sources
Profile completeness 100%
Current company
Role
Staff Software Engineer
Location
Montreal, Quebec, Canada
Company size
Who is Julien Desfossez? Overview
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Quick answer
Julien Desfossez is listed as Staff Software Engineer at Lambda, a with 580 employees, based in Montreal, Quebec, Canada. AeroLeads shows a work email signal at digitalocean.com and a matched LinkedIn profile for Julien Desfossez.
Julien Desfossez previously worked as Senior Software Engineer at Lambda and Co-Vice President of Infrastructure at Northsec. Julien Desfossez holds Ph. D., Computing from École Polytechnique De Montréal.
Company email context
Email format at Lambda
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{first_initial}{last}@digitalocean.com
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AeroLeads found 1 current-domain work email signal for Julien Desfossez. Compare company email patterns before reaching out.
Profile bio
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
Listed skills include Network Security, Virtualization, Unix, Linux, and 16 others.
Current workplace
Julien Desfossez's current company
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Lambda
9 roles
Julien Desfossez work experience
A career timeline built from the work history available for this profile.
Staff Software Engineer
Senior Software Engineer
Co-Vice President Of Infrastructure
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).
Senior Performance Engineer
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.
Feb 2018 - Nov 2023
Software Developer
Working on the LTTng tracer toolchain (open source Linux kernel and user-space tracer, tools to control, read and analyse the traces).
Jan 2012 - Feb 2018
Analyst
Révolution Linux
System administration and deployment of large infrastructures for school boards.
Apr 2005 - Jan 2012
Organizer
Hackus
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.
Aug 2009 - Apr 2010
Php/Mysql Developper
Magellan Concept
Dynamics components integration in web sites and administration interface programming.
Jun 2004 - Sep 2004
4 education records
Julien Desfossez education
Ph. D., Computing
M.Sc.A, Computer Engineering
Bachelor Of Science (Bsc), Computer Science
Dut, Génie Des Télécommunications Et Des Réseaux
FAQ
Frequently asked questions about Julien Desfossez
Quick answers generated from the profile data available on this page.
What company does Julien Desfossez work for?
Julien Desfossez works for Lambda.
What is Julien Desfossez's role at Lambda?
Julien Desfossez is listed as Staff Software Engineer at Lambda.
What is Julien Desfossez's email address?
AeroLeads has found 1 work email signal at @digitalocean.com for Julien Desfossez at Lambda.
Where is Julien Desfossez based?
Julien Desfossez is based in Montreal, Quebec, Canada while working with Lambda.
What companies has Julien Desfossez worked for?
Julien Desfossez has worked for Lambda, Northsec, Digitalocean, Efficios Inc., and Révolution Linux.
How can I contact Julien Desfossez?
You can use AeroLeads to view verified contact signals for Julien Desfossez at Lambda, including work email, phone, and LinkedIn data when available.
What schools did Julien Desfossez attend?
Julien Desfossez holds Ph. D., Computing from École Polytechnique De Montréal.
What skills is Julien Desfossez known for?
Julien Desfossez is listed with skills including Network Security, Virtualization, Unix, Linux, Open Source, Python, C, and Operating Systems.
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