Hello, I am
Lionel Rousseau
About
- Email:
lionel@rousseau.kr • Phone:+33 685 891 186 - Location:
Pays de la Loire, France - Interests:
Computing, Linux, Aviation, Hiking & Alpine Skiing
Career Objective
Join a security team (SOC, system security, SMB IT security) to protect Internet-exposed services, monitor alerts, respond to incidents, and continuously improve security posture.
Professional Profile
Versatile, rigorous, and committed, I secure and evolve production infrastructures.
I draw on my Linux, networking, and security experience—and my sense of responsibility—to guarantee service continuity.
Personality Type
Assertive Defender (ISFJ-A)
Skills
My Key Skills
➔ Cybersecurity & Systems/Network Administration
• Administration and hardening of exposed Linux systems (web, e-commerce, mail, DNS, critical databases, firewalls, monitoring, disaster recovery), 20+ years in production.
• Analysis of intrusion attempts, access and attack-surface management, log monitoring, documentation, and implementation of technical responses.
• Automation, scripting, virtualization, backups, and service continuity.
• CompTIA Security+ certified. Actively preparing for the CompTIA CySA+ Cybersecurity Analyst certification.
➔ Technical Leadership & Management
• Leading cross-functional technical projects: planning, budget, quality, on-time delivery, and coordination of multidisciplinary teams.
• Managed up to 15 people on-site and internationally; team facilitation, training, and upskilling.
• Ability to translate business needs into operational solutions (internal tools, dashboards, production tracking).
➔ International Communication & Professional English
• Fluent English, daily exchanges with international partners and clients.
• Commercial and operational export experience (Europe, USA, South Korea, Japan), negotiation and trade-show representation.
My Specialties
Curiosity is the constant source of knowledge enrichment and opens ever wider fields. Combined with time and perseverance, it builds solid skills and know-how. What’s exciting is that there is always more to learn—and that’s exactly what motivates me every day!
Linux System Administration
Proficient, 28 years
English Proficiency
Expert, 35 years
Graphic Design
Proficient, 28 years
Web Development
Advanced, 20 years
INFORMATION TECHNOLOGY
With a father working at IBM Computer Systems, I’ve always been surrounded by computers, ever since 1980. For me it all started with an Apple II from the United States. My childhood naturally leaned toward games on that computer, with a few small experiments in BASIC and learning multiplication tables using a program my father wrote. In the 1990s I began to take a deeper interest, especially after first encountering Red Hat Linux and discovering the wonders of networking. In 2000, with the boom of the Internet and LAN gaming, I co-founded the XLM Association with friends, where I developed deeper knowledge of networks and system administration in Linux and Windows environments. Driven by insatiable curiosity, I continue to learn and test the ongoing evolution of systems and networks, servers, software, and Internet-related topics.
Curiosity and the desire to seek technical answers or new challenges led me to learn, test, and use many pieces of software and servers across the environments I have worked in (Linux, Windows, and macOS). I have spent many hours—often alone and against the odds—figuring out how to reach my goals and ultimately succeed. The years within the XLM association were very formative; knowledge sharing among members and IT projects were decisive. Starting with hardware, I moved on to networking and then servers. I currently manage several dedicated Linux servers (IaaS), and have done so for more than 20 years, hosting, for personal and professional needs, mail servers (Main & MXs), web servers, web apps, and backups. I’m always happy to open an SSH terminal and type commands in a shell!
- Linux server administration
Ubuntu, Debian, CentOS, Kali...
- Virtualization & Containers
Proxmox, VMware, Docker...
- Cybersecurity
SIEM (Wazuh), IPS, NGFW...
- Network protocols & services
Tailscale, Wireguard, OPNsense...
- Web server administration
Apache, Nginx, PHP, MySQL
- Mail server administration
Postfix, Dovecot, Rspamd
- Remote support & admin
VNC, LogMeIn, SSH, ...
- DNS records, BIND, SSL
- Server configuration
- Shell scripting (Windows & Linux)
- Backups & Ansible
- Synology NAS
- Raspberry Pi (home automation)
- Windows systems
- Network Architecture
- Switch/Router Administration
- Filesystem Management
While developing my IT knowledge, I constantly tried to use it to automate and save time at work by creating scripts and developing line-of-business applications. Though not an expert, I always find a way to reach my goals—whether for projects required in my job (scripting for graphics software) or private needs such as installing home automation or aviation-related projects. Each success brings new knowledge, enabling future projects!
- PHP & Smarty development
- MySQL database queries
- JavaScript scripting
- Advanced HTML knowledge
- CSS styling
- Web app development
- Prestashop customization
- Regular expressions
- Bash & Windows shell scripting
After studying advertising communication, I truly began working as a layout operator in the French Army in 1994 during my national service, initially assigned to the Inter-Armed Sports School (Bataillon de Joinville) communications office to work on publications for the French Army. Since that short period, Photoshop and desktop publishing (DTP) software have been my daily tools. With extensive experience in the print and digital publishing industry, I also worked as a freelancer, managing end-to-end projects with clients.
- Adobe Photoshop Expert
- Adobe Illustrator Advanced
- Adobe InDesign Expert
- Adobe Acrobat Advanced
- Adobe JS Scripting
- Affinity Photo
- Affinity Designer
- Affinity Publisher
- Video Editing & Encoding
- Adobe Premiere
- Adobe After Effects
- Maxon Cinema 4D
- Maxwell Render
- Solidworks
- Microsoft Office Suite
Management
At the beginning of my career, I mostly worked alone, addressing client needs and sometimes collaborating with a colleague. Later, I had to manage a growing team of graphic designers and designers, developing new team-management skills. With teams spread around the world, it became more demanding but also highly instructive and stimulating. I eventually joined the executive committee, where new responsibilities greatly enriched me both in management and in understanding company stakes. These rewarding experiences equipped me to finally create my own business.
- Rigorous and organized
- Plans and delegates
- Projects, Events, Trade Shows
- Patient & diplomatic
- Reliable and flexible
- Identifies potential
- Planning and strategy
- Problem solving
- Time & stress management
Language Skills
English has always been a personal priority since high school. I cultivate it daily by reading books in English, practicing writing, and speaking regularly in professional and private contexts (remote management of a foreign team of graphic designers for 7 years, work with overseas subsidiaries and partners, frequent travel in Asia, the United States, and Europe). Aviation is also an excellent source of regular English practice.
Since marrying my South-Korean wife in 2005, Korean has been part of my environment and I mostly practice it during my yearly trips to South Korea. A significant portion of my company’s clients (LAFLANELLE) are Korean.
Experience
A long and versatile experience!
Naturally curious and persevering, my professional background has mainly been built around mastery of IT tools, largely in a graphics context but also operationally, notably implementing automated procedures and managing activities. After 10 years managing services and international teams at various levels of responsibility, I had the opportunity and desire to move into entrepreneurship and run my own company.
LAFLANELLE S.A.S.U.
Partner & President
Since 2019 • Main activity: Import/Export of fabrics manufactured exclusively in Europe.
• Wholesale export in B2B of fabrics for a primarily South-Korean clientele.
• Online retail sales in B2C of textile and haberdashery products in France and abroad.
• Online advertising and marketing development (Google Ads & Merchant and online marketplaces).
• Sales on various European and Asian platforms (Ebay, Etsy, Rakuten, Naver).
• Purchasing patterns (motifs) from French textile designers for a Japanese company based in Gifu. Project management with Japanese teams via Trello.
• Development and management of the website (Prestashop - PHP, MySQL & Smarty).
DAEBAK S.A.R.L.
Partner & Manager
Since 2023 • Rental activity mostly managed via Airbnb.
• International marketing development (Asia) via social networks.
Business Project
Sales Agent
2016 - 2019 • Development of marketing tools, commercial animation of the sector.
• Commercial prospecting.
• Participation in various trade shows: ICFF, NY NOW in New York (USA), and Maison & Objet in Paris.
• Interventions and trips to the Korean market with the local sales agent.
Groupe Leblanc S.A.
Marketing Director
2015 - 2016 • In coordination with executive management, development and execution of the Marketing & Communication plan for French and international markets: creation of communication and sales materials, organization of trade show participation (Salon des Maires) and events (International Conference, Tour de France), development of websites (corporate and e-commerce), Partnerships and Sponsorships (Les Blouses Roses, city of Megève), video productions (drone) – Team of 3 plus Digital Press.
• Oversight of the Design activity: range development, product catalogues, responses to strategic international projects, product prototyping – Team of 3 designers and a 3D printer.
• Supervision of the Simulation activity: development of customer project presentations (brochures, videos, AR/VR mobile app,...), process development and quality control – 1,200 project files and nearly 20,000 visuals produced each year – Team of 9 graphic designers, including 5 in Romania.
• Development of cross-functional projects jointly with IT, R&D, and Production: deployment of Solidworks in processes from Design to manufacturing, integration of a Product Life Manager into the ERP; Implementation of prototyping using a 3D printer.
Leblanc Illuminations S.A.
Head of Graphics & Simulation
2006 - 2015 • Managed a team of 9 graphic designers, including 5 in Romania.
• Set up and managed a remote graphics studio (Romania) with process and IT workflow development.
• Graphic design of Web & Print sales materials to support sales teams. Growth from 160 to 1,200 project files over the period.
• Product design in 2D and 3D – Simulation & compositing.
• Development of application tools to improve productivity and optimize graphic techniques (JS).
• Development of web applications for project management and tracking production of custom products (PHP, JS, MySQL).
• Studio and outdoor photography (night shoots).
Business Project
E-commerce
2010 • Supplier prospecting in Japan (Gifu prefecture) and South Korea.
• Graphic design and communication tools.
• Design of the keito.fr showcase website.
• Documentation study with Customs services.
Freelance
Graphic Designer
2004 - 2006 • Consulting in print and internet communication.
• Graphic design and DTP for offset and digital printing.
• Photography and digital retouching.
• Website creation in French and English.
• IT support interventions
• Hosting clients on a private dedicated server and administering the Linux system.
Cabinet Bernier
Graphic Designer
2001 - 2004 • Direct client contact and end-to-end management of client projects.
• Graphic design and DTP for offset and rotary printing.
• Agency prepress and CTP technical lead.
ETPM
DTP Designer
1997 - 2001 • Direct client contact and complete project management.
• Graphic design and desktop publishing for offset and digital printing.
Informatique
Marketing System
Sales Technician
1996 • Sale of PCs and components.
• Configuration and installation of sold PCs.
• Computer (PC) maintenance.
French Army
Official Driver
1994 - 1995 • Awarded the National Defense Medal, bronze level
• Obtained an Elite Driver Certificate
• Initial assignment to the communications office of the Inter-Armed Sports School in Fontainebleau (77).
PERSONAL
Always driven by passion!
As a teenager, activities related to music pushed me on stage, to host a radio show, and to meet international musicians in interviews. Later, esports and computing provided another opportunity to meet people from all backgrounds and organize events. More recently, I focused on fulfilling an old dream—flying—and stepped into the world of aviation, while engaging in my aeroclub’s activities.
Les Ailes du Maine Avion
Private Pilot
Since 2016 • Around 100 hours of VFR flight on single-engine piston aircraft: Cessna 150, 152 & 172, APM30 Lion, DR400-108 (Lycoming & Rotax), DR400-160 & Cap 10.
• FCL.055 VFR level 5 (advanced) certification (mastery of ICAO aeronautical English).
• Studying IFR flight and training on a (computer) flight simulator.
XLM Computing & LAN Gaming Association
Founding President
2000 - 2004 • Responsible for organization, coordination, and lead network administrator of Lanomanies 2002. National esports competition, qualifying event for the World Cyber Games. 250 participants, 300 computers including 20 servers.
• Organizer and network admin of the association’s weekly meetups (between 30 and 50 computers). Nearly 200 events over 4 years.
• Administrator of the association’s dedicated (Linux) servers.
• Participation in several national and international esports competitions as a member of the association’s official teams.
Vallée FM
Necropolis Show
Radio Host
1993 - 1994 • Nearly 80 shows co-hosted.
• Relations with record labels specialized in Metal.
• Numerous interviews with metal bands in French and English during concerts in the Paris area.
From Beyond Insanity
[Metal Band]
Guitar & Vocals
1991 - 1994 • Co-composition and songwriting.
• Several concerts in the eastern Paris region.
Education
My Background
Self-taught in many subjects, I followed a fairly standard educational path and obtained a BTS in Advertising Communication & Action. At the time, I didn’t really know where these disciplines would lead, having chosen them somewhat by default. As computers became widespread in advertising and the graphics industry, I found what I wanted and truly enjoyed doing: mastering computers and software to design and carry out creative tasks.
I’ve always been fascinated by manufacturing processes, especially those of modern printing. I felt the same excitement when I discovered the porcelain industry in Japan while working on a business-creation project in the field.
Being more of a technician at heart, it’s understanding how processes interlock to achieve results and putting them into practice that drives me. IT became my playground, and once my studies were finished, I trained myself in these subjects.
CompTIA Certifications
Security+
2025General security concepts
• Security controls, fundamental concepts, change management, and cryptographic solutions.
Threats, vulnerabilities, and mitigations
• Architecture models, enterprise infrastructure, data protection, resilience, and disaster recovery.
Security architecture
• Architecture models, enterprise infrastructure, data protection, resilience, and disaster recovery.
Security operations
• Computing resources, asset and vulnerability management, alerting and monitoring, enterprise security, identity and access management, automation and orchestration, incident response, and data sources.
Security program management and oversight
• Security governance, risk management, third-party risk, security compliance, audits and assessments, and security awareness.
ETS Global
TOEIC Listening & Reading
2021 Achieved the following scores:
• Listening 495
• Reading 485
• Total 980/990
Chamber of Commerce & Industry (72)
5 Days to Start a Business
2017 Training covered the following topics:
• Manager’s skills and attitude
• Stages of the entrepreneurial project
• Marketing and sales strategy
• Legal, tax, and social strategy
• Financial strategy
Directorate General of Civil Aviation
Aeronautical knowledge certificate for private pilot
2017 Subjects covered:
• Air law
• Human performance
• Meteorology
• VFR communications
• Navigation
• Principles of flight
• Operational procedures
• Performance and flight planning
• General aircraft knowledge
Exam successfully passed at the DGAC test center in Rennes with a score of 94%.
Lycée Champlain (94)
BTS Advertising Communication & Action
1994 Subjects covered:
• Communication
• Economics and law
• Management and leadership
• Marketing
• English
• Professional applications
Lycée Charles Le Chauve (77)
BAC Mathematics and Natural Sciences (D)
1992 Secondary school diploma with a specialization in mathematics and natural sciences.
Contact
Let’s Stay in Touch
Feel free to contact me via any of the links below. I’ll be happy to get back to you.