Freelancer profile translated to English.
Back to original languageAbout Mathieu
Having acquired over 6 years of experience as an IT Security Consultant and Pentester, I have been involved in a large number of IT security-related missions. I also have 3 years of experience as a Systems and Network Administrator, which gives me a precise and global vision of information systems.
I regularly assist VSEs/SMEs in improving their security through penetration tests on their web or mobile applications, followed by an audit of their security processes.
My area of expertise includes:
- External penetration tests (perimeter exposed on the internet)
- Web application penetration tests (black box, gray box, white box)
- Mobile application penetration tests (Android and iOS)
- Audit of technical and organizational security measures for the information systems of startups and small businesses
- Architecture and configuration audits
- Administration and security audits of on-premise and Cloud Azure-M365/AWS infrastructures
- Administration and security audits of Windows and Linux operating systems
- Source code audits
- Advice on decisions related to IT security and systems and network administration
I hold the following certifications:
- Offensive Security Certified Professional (OSCP)
- Burp Suite Certified Practitioner (BSCP)
- Azure Security Engineer Associate (AZ-500)
- AWS: Cloud Practitioner
I also continue to train regularly through continuous monitoring and by solving challenges (PortSwigger Web Security Academy, Root-me, YWH Dojos, etc.) or participating in Bug Bounty programs.
Do not hesitate to contact me if you require further information.
French
Native or bilingual
English
Fluent
Spanish
Conversational
Can work on-site
Paris (up to 30km), Rennes (up to 50km), Nantes (up to 50km)
Experience
- SukhitPenetration Tester / Cybersecurity Consultant / Bug Hunter / System and Network AdministratorTELECOMMUNICATIONSMarch 2023 - Today (3 years and 3 months)- External penetration tests (perimeter exposed on the internet)- Web application penetration tests (black box, gray box, white box)- Mobile application penetration tests (Android and iOS)- Architecture and configuration audits- Administration and security audits of on-premise and Cloud Azure-M365/AWS infrastructures- Administration and security audits of Windows and Linux operating systems- Source code audits- Analysis of the security of information systems of startups and small businesses- Advice on decisions related to IT security and systems and network administration
- AlmondSecurity Consultant / Penetration TesterDIGITAL AND ITSeptember 2018 - November 2022 (4 years and 2 months)92100 Boulogne-Billancourt, France𝘗𝘦𝘯𝘦𝘵𝘳𝘢𝘵𝘪𝘰𝘯 𝘵𝘦𝘴𝘵𝘪𝘯𝘨• Web (OWASP methodology)• Android (Android Studio, Jadx, Frida, Drozer, etc.)• iOS (jtool)• IoT (watch, LoRaWAN gateway)• Azure𝘚𝘰𝘶𝘳𝘤𝘦 𝘤𝘰𝘥𝘦 𝘢𝘯𝘢𝘭𝘺𝘴𝘪𝘴• PHP, Java, JavaScript, Kotlin, C#, etc.𝘊𝘰𝘯𝘧𝘪𝘨𝘶𝘳𝘢𝘵𝘪𝘰𝘯 𝘢𝘯𝘢𝘭𝘺𝘴𝘪𝘴• Azure, AD Connect• Office 365• MDM• Linux / Windows• MySQL𝘔𝘪𝘴𝘤𝘦𝘭𝘭𝘢𝘯𝘦𝘰𝘶𝘴• NFC/RFID
- AlmondSystem Network administratorSeptember 2018 - January 2022 (3 years and 4 months)Sèvres, France• Level 2/3 technical support• Switches (Cisco, HP)• Firewalls (Fortinet, Checkpoint, Juniper)• Proxy (IronPort, Zscaler)• VPN (Pulse, OpenVPN, WireGuard)• Linux• Windows (Active Directory Domain)• Puppet, Terraform• VMware (vCenter, vSphere)• Office 365/Exchange• Azure
Reviews
Baptiste
Dately SAS
Reviewed on 1/30/2025
Mathieu conducted a cybersecurity audit of my mobile application. He took the time to understand our environment to identify potential vulnerabilities and propose concrete solutions adapted to my needs. He also took the time to explain each step clearly and pedagogically, which allowed me to fully understand the issues and recommendations.
I highly recommend Mathieu for any project requiring cybersecurity expertise!
R
Robin
Juisci SA
Reviewed on 3/17/2024
We had the opportunity to collaborate with Mathieu to conduct cybersecurity tests on our platform. Throughout this collaboration, Mathieu distinguished himself by his methodical approach and professionalism. He played a key role in supporting our technical teams in implementing certain fixes to improve our security.
His ability to effectively communicate technical issues and propose pragmatic solutions greatly facilitated collaboration between our teams. Mathieu demonstrated great adaptability and was always ready to share his knowledge to help us raise our security level.
I highly recommend Mathieu to any company looking to strengthen its cybersecurity. We will not hesitate to call on his services again in the future as needed.
Recommendations
LG
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Education
- Communications and Systems SecurityUniversity of Technology of Troyes2018Communications and Systems Security
- Electronic and Informatics engineeringUniversidad Técnica Federico Santa María2016Electronic and Informatics engineering
Certifications
- OSCPOffensive Security2020
- AZ-500: Microsoft Azure Security TechnologiesMicrosoft2020