Alexandru Ionescu
Senior Offensive Security Engineer, Penetration Testing Lead
Austin, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolAlexandru Ionescu is a Senior Offensive Security Engineer and Penetration Testing Lead with 13 years of experience securing infrastructure and applications for large enterprises, now based in Austin, Texas. He leads and scopes pentest programs, drives remediation with product teams, and has executed high-impact red team operations that protected billions in crypto assets. Comfortable across offensive and DevSecOps domains, he’s automated cloud provisioning, built service-mesh mTLS and OPA-based RBAC controls, and implemented a serverless SIEM to improve detection and response. Alexandru pairs hands-on adversary emulation—customizing C2 tooling and stealthy phishing campaigns—with collaborative purple-team work to close detection gaps and improve MTTD. His background in computer engineering and early experience building verification and kernel-level features give him a strong systems-oriented perspective that surfaces non-obvious attack and mitigation paths.
13 years of coding experience
10 years of employment as a software developer
Bachelor of Science (BS) Computer Engineering, Bachelor of Science (BS) Computer Engineering at The University of Texas at AustinMaster of Science (MS) Computer Engineering, Master of Science (MS) Computer Engineering at Purdue University
English, Romanian, Spanish
Github Skills (93)
active-directory10
ambassador10
hashicorp-vault9
secrets9
signing9
vault9
api9
security9
encryption9
docker9
api-gateway9
envoyproxy9
gateway9
pipeline8
water8
Programming languages (8)
Github contributions (5)
alexionescu/conf
Jul 2013 - Jan 2017
Contributions:23 commits, 4 pushes in 3 years 6 months
alexionescu/alexionescu.net
May 2017 - Oct 2021
Contributions:11 pushes, 3 branches in 4 years 6 months
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