Simon Maréchal
Security Engineer at Datadog
Marseille, Provence-Alpes-Côte d'Azur, France
Summary
👤
Senior🎓
Top SchoolSimon Maréchal is a security engineer based in Marseille with 14 years of hands-on experience building secure, scalable systems across cloud, networking, and application stacks. Trained at CentraleSupélec, he has real-world operator experience as lead network administrator for a 2,000-user campus—running Juniper fleets, BGP peering and an autonomous system—paired with DevOps and monitoring expertise. At Datadog he moved from frontend ASM work to building internal security scanners and a fuzzing platform, and contributes to prominent open-source security tooling like John the Ripper. Comfortable in C/Python/Go and automation with Ansible, he bridges low-level performance and cryptography fixes with practical cloud-native security needs. Outside work he combines engineering rigor with outdoor pursuits like mountain hiking, reflecting a pattern of curiosity that drives both infrastructure optimizations and novel AI-based intrusion detection projects.
14 years of coding experience
2 years of employment as a software developer
CentraleSupélecLycée Sainte-Geneviève
Github Skills (11)
crypt10
c1710
hash10
c1110
assembler9
security9
it-security9
md58
sha7
cprogramming-language5
c-language5
Programming languages (12)
Github contributions (5)
openwall/john
Dec 2011 - Apr 2013
John the Ripper jumbo - advanced offline password cracker, which supports hundreds of hash and cipher types, and runs on many operating systems, CPUs, GPUs, and even some FPGAs
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:9 commits, 4 comments in 1 year 4 months
Contributions summary:Simon contributed to the project by adding copyright statements and updating copyright information across multiple files. They also addressed build issues, specifically for the ICC compiler, by modifying the `taviso_fmt.c` file. Furthermore, the user updated assembly files related to 64-bit intrinsics and made changes to the `sunmd5.c` file, potentially enhancing the project's cryptographic capabilities.
simdmpioperating-systemshash-functionscrc
bartavelle/curiefense
Feb 2021 - Mar 2023
Curiefense extends Envoy proxy to defend against a variety of threats, including SQL and command injection, cross site scripting (XSS), account takeovers (ATOs), application-layer DDoS, remote file inclusion (RFI), API abuse, and more.
Contributions:2 reviews, 4 PRs, 461 pushes in 2 years 1 month
proxyinjectionthreatsenvoy-proxyscripting
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