Petru Ciocîrlan
Software Engineer, XDR Core at Bitdefender- Claim this Profile
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Romanian Native or bilingual proficiency
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English Full professional proficiency
Topline Score
Bio
Credentials
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Cambridge English: Advanced - Level C1 (score in C2 range)
Cambridge University Press & Assessment EnglishNov, 2018- Sep, 2024
Experience
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Bitdefender
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Romania
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Software Development
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700 & Above Employee
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Software Engineer, XDR Core
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Jul 2023 - Present
XDR Core team• Actively laterally moved to this more engineering-heavy team to tackle new technical challenges and to improve and expand on my software engineering skill set;• Integrated new features for the in-house testing infrastructure, involving orhcestrating many messaging exchanges and queues between multiple services.
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Security Researcher, XDR Detections
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Oct 2021 - Jun 2023
XDR Detections team (from its beginnings)• Research and Development and code review of hundreds of XDR detections with varying degrees of complexity and severity, for serveral platforms: Microsoft Suite (Microsoft 365, Azure, AzureAD), AWS, Google Workspace and Google Cloud, and proprietary sensors (EDR, NTSA, mobile);• Main speaker for the company at the stage and stands of the biggest internship program in Romania - Stagii pe Bune (2023, Iasi);• Interviewed internship and fulltime candidates and mentored hires over the course of one year (3 juniors);• Created service that monitors activity in the market (beta and full production) and displays aggregated meaningful information for the team, leading to the raising of awareness of - and solving of - high rates of false positives and invalid alerts / incidents;• Have been very active and involved in discussions with technical leads and management about new features and improvements, including highlighting sources of future technical debt for the product. Proposed several features and improvements;• Took on the team's technical lead's responsabilities while they were on leave for almost a month, with 3 juniors to coordinate, leading up to a product demo that ended up being very well received;• Cut team work time by automating tasks, such as developing a script that generates automated unit tests for detections and scenarios. Show less
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Security Researcher, Forensics
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Oct 2020 - Sep 2021
Forensics team• Created an event driven internal service that correlates events from a continuous data stream of tens of Terrabytes per month. The service also features custom rules that can be manipulated at any time and are managed by researchers to hunt for malware / attack in the wild (ITW);• Tackled popular at the time malware: reverse engineering resulting in very detailed descriptions, collect threat intelligence (sometimes by disguising as "infected" nodes in a botnet), threat hunting;• Investigated and responded to client tickets; this includes both cases that are already infected (or suspect they are) and cases in which the attack already happened;• Automated tasks for team, one example being a script that expands upon a querried field, yielding in information related to it or adjacently related, compared to before where every query had to be executed manually. Show less
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Junior Security Researcher
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Jul 2020 - Sep 2020
Forensics team: Reverse Engineering• Training;• Reversed Engineered one of the most popular and active malware at the time, with no training wheels.
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Education
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2023 - 2025
Universitatea „Alexandru Ioan Cuza” din Iași
Master's degree, Distributed Systems -
2019 - 2022
Universitatea „Alexandru Ioan Cuza” din Iași
Bachelor's degree, Computer Science -
2015 - 2019
Colegiul National de Informatica, Piatra Neamt
High School Diploma, Mathematics and Computer Science
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