About Jonathan
- Penetration Testing (Pentest): web and mobile applications, internal networks, cloud, Active Directory, Wi-Fi, phishing, Red Team, AI & LLM
- Security Audits : configuration, architecture, and organization
- Understanding your business challenges
- In-depth technical testing adapted to your context
- Clear report with concrete and prioritized recommendations
- Educational debrief (technical version + managerial version)
- Support until the implementation of fixes
French
Native or bilingual
English
Fluent
Experience
- HELXFounderCONSULTING AND AUDITSMarch 2025 - Today (1 year and 3 months)Paris, FranceHELX (is a cybersecurity expertise company created by passionate consultants, with a clear mission: to make IT security more accessible, understandable, and effective.Our expertise to meet specific and precise needs.
- Penetration tests / pentest (web, infra, mobile, API, ...)
- Technical & strategic audits
- Training & awareness
- Security hardening & post-audit support
- Incident response & forensics
- LexfoPentesterCONSULTING AND AUDITSSeptember 2023 - February 2025 (1 year and 5 months)Paris, FranceSenior cybersecurity consultant within the Pentest team, involved in conducting various security audits: web, network, internal, API, and cloud penetration tests.Assisting clients in evaluating and strengthening the security of their information systems by simulating realistic attack scenarios.Key responsibilities:
- Pentest & audits: conducting penetration tests on various systems (Web, network, internal, API, cloud), Red Team exercises
- COGICEOIT Security ConsultantCONSULTING AND AUDITSFebruary 2017 - September 2023 (6 years and 7 months)Paris, France6 years of experience at Cogiceo allowed me to assist clients from various sectors (industry, logistics, banking, energy) in securing their systems through:
- penetration tests (pentests),
- in-depth technical audits,
- and targeted Red Team missions.
Key responsibilities:- Pentest & audits: conducting penetration tests on various systems (Web, network, internal, API, cloud)
- Project management: receiving client requirements, defining mission scope, and operational monitoring until deliverable presentation
- Team leadership: operational management of a team of 4 pentesters
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Education
- Engineering Degree, Computer ScienceENSEIRB-MATMECA2017Diplôme d'ingénieur, Informatique
Certifications
- OSCPOffensive Security2017
- CHFIE-Council2020