Julien SEBIRE

Senior AI & Cybersecurity Specialist

Salary / Daily rate

Paris, France

Freelance

Can come onsite

Skills

CybersecurityAIScrapingLLMs / Large language modelsHardwareWeb3

Languages

GermanEnglishSpanishFrench

About me

Intro

AI & cybersecurity specialist with 10+ years building secure industrial systems and AI applications. Founded Pozsty, transforming voice ideas into engaging social media posts in 3 minutes. Expert in IoT security, 5G protocols, and industrial control systems with proven track record at Thales, ESA, and Airbus.

Links

Work experience

Founder

PozstyFreelance

Oct 2025 - Present

1 year 1 month

Pozsty aide les entrepreneurs, créateurs et dirigeants à transformer une idée vocale en post clair, structuré et engageant pour LinkedIn, X ou Instagram. Nous croyons que la parole est la forme la plus naturelle d’expression et que la technologie doit s’adapter à l’humain, pas l’inverse. Rôle : stratégie produit, IA, contenu, croissance.

Freelance

Hacking RealityFreelance

Jul 2022 - Present

4 years 4 months

Remote, OR 97458, USA

AI & Cybersecurity Specialist Building AI apps Cybersecurity of Industrial, IOT & AI technologies Educator on Industrial, IOT and AI technologies Speaker

IoT Security Researcher

De Haagse Hogeschool / The Hague University of Applied Sciences

Jul 2018 - Jul 2020

2 years 1 month

The Hague, Netherlands

Main research focus: Security and Privacy for the 5th generation of communication protocols (5G & LiFi) Side research focus: Security and Privacy for the electromagnetic spectrum for a wide range of use cases: Low Power communication protocols - LoRaWAN, Sigfox, Zigbee Satellites - Security of GPS/Galileo systems IIoT - Design of security architecture for the DurableCase Research project: https://vollegrondsgroentenet.com/nieuws/op-weg-naar-samenwerkende-robots-de-agrosector IoT - State of the art of IoT security from a technical/political and legal point of view Teaching lessons: GNSS (Global Navigation Satellite System) security IoT Security paradigm Security Risk Management From 2G to 5G - Technological evolution & security Security Operating Center 5G Security - Beginner 5G Security - Advanced 5G Physical layer Design Rethinking

Security Engineer

European Space Agency - ESA

Aug 2016 - Jul 2018

2 years

Security Engineer

Thales

Aug 2016 - Jul 2018

2 years

Security Consultant

European Network for Cyber Security U.A.

Apr 2015 - Jul 2016

1 year 4 months

The Hague, Netherlands

• Definition, harmonization and standardization of procurement security requirements for attack mitigation on the Smart Grid for various European Utilities. Sample work: https://www.oasis-open.org/committees/download.php/59272/EV%20Charging%20Systems%20Security%20Requirements.pdf • Design of secure architecture for embedded devices systems. • Perform risk analysis for industrial control system. • Security research for FP7 project – SEGRID • Contributing to national and international working groups and standardization committees. • Creating content by performing studies, resolving problems, writing opinions, evaluations and papers.

Industrial ICT Security Specialist Junior

Airbus

Feb 2014 - Mar 2015

1 year 2 months

Région de Hambourg, Allemagne

Tasks For Airbus in Hamburg within the department “ICT Risk & Security“ I am an Industrial IT Security Junior Specialist and I support the Industrial IT Security Experts of my team in the field of Security of Industrial Control Systems environments including Process Control, Distributed Control (DNC/CNC), PLC-based and SCADA systems and networks. I accumulate expert experience in the interesting field of Industrial IT and Control System security. My main tasks are: - Provides technical expertise to the ICT security team - Supports shop floor IT projects - Supports the design and implementation of Industrial IT security solutions for plants - Establishes and maintains relationship with Airbus worldwide organisation’s Industrial IT security specialists - Checks compliance with Airbus Company IS Security Directives and Standards and with the Airbus IT Security guideline and contribute to the before mentioned standards, directives and guidelines - Ensures the reporting for my activity

Research and development intern in Cyber Security

Euriware

Jul 2013 - Oct 2013

4 months

Région de Aix-En-Provence , France

Industrial Control System (ICS) Supervisory Control and Data Acquisition (SCADA) Control command system 2700X, NERC, NIST, ISA 99 Procedures documentation

Internship

Gerard bertrand

Jul 2012 - Oct 2012

4 months

11100 Narbonne, France

Creation of a new & secure infrastructure for a new place. Security Audit Information Securicy Policy based on ISO 27001 & 27002. Creation of a Disaster Recovery Plan. Worked with outsides companies. Replacement of the IT director for 3 weeks. Support level 1 - 2

Security Lab Manager

SUPINFO

Nov 2011 - Jul 2012

9 months

Montreal, QC, Canada

I am managing a project about IT security for students in my school to make them sensitive to every risks you can meet as an administrator.


Education

SUPINFO

Master's degree

2009 - 2014

6 years

Portfolio

Pozsty

The best place to find your next move

© 2026. All Rights Reserved.