Freelancer profile translated to English.
Back to original languageAbout Simon
Cybersecurity expert with over8 years of experience**, I help companies **assess, strengthen, and securetheir information systems through **penetration testing, technical audits, and tailor-made support**.
My approach prioritizesconcrete, measurable actionsadapted to your environment, in order toreduce real risks and strengthen partner confidence.
French
Native or bilingual
English
Fluent
Portuguese
Conversational
Can work on-site
Paris (up to 50km)
Experience
- HELXCybersecurity Expert | PentesterCONSULTING AND AUDITSMarch 2025 - Today (1 year and 5 months)Paris, FranceI co-founded HELX, a cybersecurity expertise firm (8 years of experience) that combines offensive and defensive approaches to offer comprehensive protection to companies.We cover the entire security spectrum, from assessment (audit, pentest) to remediation, including incident response.Our goal: to make cybersecurity more accessible, concrete, and effective for our clients.Our expertise:
- **Penetration Testing / Pentesters**: web, LLM, AD, infrastructure, mobile, API, cloud, Wi-Fi, physical, AV/EDR solution testing,
- **Technical & Strategic Audits**: configuration, architecture, organizational
- **Training & Awareness**: employees, IT teams, executives.
- **Post-audit Security & Support**: fixes, hardening, counter-audits.
- **Incident Response & Forensics**: 24/7 assistance, containment, analysis, and remediation.
- AdvensExpert in Penetration Testing and Technical AuditsCONSULTING AND AUDITSNovember 2023 - February 2025 (1 year and 3 months)Paris, FrancePerforming advanced security audits and penetration tests on complex environments (web, internal, external, mobile, mainframe).Actively participating in the evolution of technical offerings and team training.**Main Missions**:
- Performing technical pentests on various environments (AD, web, mobile).
- Technical referent for external penetration testing offerings.
- Training and supporting the audit team.
- Leading technical sessions (new tools, methods, RCEs).
**Objective**: ensure the technical quality and added value of services provided to clients. - COGICEOIT Security Consultant and ManagerCONSULTING AND AUDITSFebruary 2018 - November 2023 (5 years and 9 months)Paris, FranceSupporting SMEs, mid-sized companies, and large enterprise clients (industry, energy, banking, logistics) in their cybersecurity initiatives: penetration tests, technical audits, and Red Team exercises.Main Missions:
- Performing external, internal, web, mobile, and physical pentests.
- Participating in Red Team exercises: phishing, OSINT, infrastructure compromise, achieving objectives, and presenting deliverables.
- Configuration, architecture, and organizational audits.
- Managing audit projects: defining scope, piloting, client reporting.
- Supervising and managing a team of 4 pentesters and training juniors.
- R&D and internal development of SaaS tools (attack surface mapping, Linux server analysis).
**Result**: improved client security levels and industrialization of technical audit processes.
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Education
- Master's degree - Information Systems SecurityUniversity of Technology of Troyes2017Master's degree
- Engineering degree in Systems, Networks, and CybersecurityUniversity of Technology of Troyes2017Systèmes, réseaux, et sécurité informatique
Certifications
- CRTO - Certified Red Team OperatorZeropoint Security2024
- Zephyr ProLabHackthebox2023