Arthur Caldeireiro
DevSecOps Engineer Consultant at Lenstra
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolArthur Caldeireiro is a DevSecOps Engineer Consultant with eight years of hands-on experience blending cloud engineering and offensive security across clients like Société Générale, Malakoff Humanis and Groupe Bayard. Currently at Lenstra after a stint at Devoteam A Cloud, he pairs cloud-native delivery with practical red-team skills from prior roles as an Offensive Security Auditor and CTI analyst. A computer engineering master’s student based in Paris, he’s an avid pentester-in-training with top 1% TryHackMe and top 3% RootMe rankings and runs a public cheat-sheet site (kdns.kaldei.com) to share pragmatic security knowledge. Fluent in both technical assessments and secure cloud operations, he brings a rare mix of certification-driven curiosity and real-world consulting experience, and he’s actively seeking an overseas internship to cap his studies.
8 years of coding experience
1 year of employment as a software developer
Master's Degree in Computer Science, Master's Degree in Computer Science at EXIA
French, EnglishProgramming languages (4)
Github contributions (5)
Kaldei/KDN
Nov 2023 - Apr 2025
Contributions:176 pushes, 1 branch in 1 year 5 months
Kaldei/IPCalculator
Mar 2020 - Sep 2023
Contributions:24 pushes, 15 branches in 3 years 7 months
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