Julien Berton

Profile

13 years designing, securing and migrating Cisco, VMware and Proxmox infrastructures on Debian GNU/Linux, and training the teams who run them. Systems and network architect at CESI since 2018, former Technical Director France for Cisco Networking Academy and co-author of VMware vSphere 6 - Concevez votre infrastructure de virtualisation (ENI Editions, in French). I run projects from audit to handover, documentation and knowledge transfer included.

Professional experience

  1. Nov. 2018 -
    present
    CESI École d’IngénieursSystems and network architect, national partnerships manager
  2. Jul. 2015 -
    Nov. 2018
    Cisco Systems, Cisco Networking AcademyTechnical Director France, regional manager for Île-de-France, Grand-Est, Bourgogne-Franche-Comté
  3. Feb. 2014 -
    Jul. 2015
    SUPINFO International UniversityLead instructor
  4. Apr. 2013 -
    Feb. 2014
    VirtualiSystems and network architect

Degree

International Master of Science in Computer Science SUPINFO International University 2008 - 2013

Publication

Cover of the book VMware vSphere 6 - Concevez votre infrastructure de virtualisation, ENI Editions

Co-author of VMware vSphere 6 - Concevez votre infrastructure de virtualisation, ENI Editions (ISBN 978-2-409-00031-7), in French.

ENI Editions, 2017 · with Eric Fourn and Manuel Heurtin

Recent highlights

  • Architecture

    of a smart building, restored to service

    Cisco, VMware and Debian infrastructure taken over, Wi-Fi migrated to Cisco Meraki, Zabbix monitoring, Wazuh SIEM, Veeam backup.

  • 800M+

    rows collected and analyzed, multi-protocol BMS control

    Control of heat pumps, air handling units and lighting, Python data collection (BACnet, Modbus, DyNet, TCP/IP), real-time digital twin on Unreal Engine 5.

  • 50+

    VLANs in Zero Trust

    Over 1,000 firewall rules, end-to-end segmentation.

  • 5-30 min

    downtime per VM

    Full migration from vSphere 8 to Proxmox VE.

  • ≈€200k

    Cisco × CESI project

    APIPA project led from design to deployment.

Certifications

  • CCIE R&S (written)
  • CCDP
  • CCNP R&S
  • CCDA
  • CCNA R&S · Security · Wireless
  • VCP5-DCV
  • vExpert 2017-2022
  • IPv6 Forum Gold
  • TOEIC 885/990

Experience

CESI École d’Ingénieurs

- present

Systems and network architect, national partnerships manager

  • Complete redesign (systems, network, storage) of a smart building to bring it back to nominal operation, from the physical layer to the application layer: Cisco, VMware vSphere, Debian GNU/Linux.
  • Smart building: control of the equipment (heat pumps, air handling units, lighting) and data collection in Python across a heterogeneous environment (BACnet, Modbus, DyNet, TCP/IP); management and analysis of more than 800 million rows (collection, database storage, maintenance).
  • Zero Trust firewalling: more than 1,000 rules, 50+ VLANs, VXLAN. Wi-Fi migrated from a WLC / Aironet architecture to Cisco Meraki.
  • Zabbix monitoring, Veeam Backup & Replication backups, compliance and mass deployment with Puppet.
  • Building cybersecurity following ISO 27K, ANSSI and GDPR, security and compliance monitoring with Wazuh, training for staff and students.
  • Migration from VMware vSphere 8 to Proxmox with 5 to 30 minutes of downtime per resource: architecture, configurations, backup, documentation, security policy and load-shedding procedures adapted.
  • Digital twin of the building on Unreal Engine 5, mirroring its sensors and actuators in real time, with the associated API.
  • Led the APIPA project between Cisco and CESI (≈€200k): schedule, budget, team, stakeholders, custom development and deliverables.
  • Designed teaching modules and delivered engineering courses (CDIO method): systems, networks, architecture, smart building, interoperability, industrial control. Technology transfer to industrial companies.

Cisco Systems, Cisco Networking Academy

-

Technical Director France, regional manager for Île-de-France, Grand-Est, Bourgogne-Franche-Comté

  • Technical lead of the Cisco Networking Academy program in France within the country’s digital transformation plan (Country Digitization Acceleration), the first of its kind worldwide for Cisco.
  • Memorandum of understanding between Cisco France and the French Ministry of Education: contribution to training 200,000 students in 3 years, 174% program growth.
  • Processes, strategies and platform adapted to the plan’s objectives.
  • Designed three new networking courses with the US teams for 165,000 middle-school students (French middle-school reform), and trained 1,500 teachers on them.
  • Train-the-trainer and Instructor Trainer (CCNA R&S, CCNA Security, CCNA CyberOps, CCNP R&S): more than 500 instructors trained.
  • Business and technical talks on IoT and cybersecurity.
  • As regional manager: 24% growth in FY18, top regions of the program.

SUPINFO International University

-

Lead instructor

  • Managed the academy’s Cisco courses: CCNA R&S, CCNA Security, IoT / IoE. Taught CCNA and CCNA Security.
  • Trained CCNA and CCNA Security instructors at the instructor training center, managed certified instructors and partners.
  • Built teaching automation tools (SubjectGenerator, QuizGenerator, MailParser).

Virtuali

-

Systems and network architect

  • Designed and deployed Cisco Nexus data centers (2K, 3K, 5K, 7K), wired and wireless infrastructures (ISR G1/G2, Catalyst, Aironet).
  • Deployed Exchange 2010/2013 and migrated from Exchange 2003.
  • Integrated VMware vSphere 5 and View for large accounts, sizing server and desktop virtualization.
  • Fully automated a Citrix XenApp deployment with VMware PowerCLI and Citrix PowerShell.
  • Presented the company’s solutions at industry events.

Expertise

  • Network architecture & integration

    Cisco campus and data center (Catalyst, Nexus), Cisco Meraki Wi-Fi, end-to-end routing and switching.

  • VMware to Proxmox VE migration

    Full migration from vSphere 8 to Proxmox VE with 5 to 30 minutes of downtime per VM, backup and procedures reworked.

  • Cybersecurity & Zero Trust architecture

    Segmentation across 50+ VLANs and VXLAN, over 1,000 firewall rules, Wazuh SIEM, ISO 27001, ANSSI and GDPR frameworks.

  • IT infrastructure audit

    Assessment of network, virtualization, storage, backup and security, followed by a prioritized remediation plan.

  • Technical training

    Engineering courses (CDIO method) and train-the-trainer for Cisco Networking Academy: more than 500 instructors trained.

  • Smart building & digital twin

    Control of building equipment (heat pumps, air handling units, lighting) and multi-protocol BMS data collection (KNX, BACnet, Modbus, MQTT) in Python, real-time digital twin on Unreal Engine 5.

Certifications

Cisco

  • CCIE Routing & Switching (written exam)
  • CCDP (Design)
  • CCNP Routing & Switching
  • CCDA (Design)
  • CCNA Routing & Switching, Security, Wireless
  • CCENT Routing & Switching
  • Data Center Support Specialist: Application Services, Storage Networking, Unified Fabric
  • Unified Fabric Technology Support Specialist
  • Certified Academy Instructor and Instructor Trainer CCNA & CCNA Security

VMware

  • VCP5-DCV Data Center Virtualization
  • vExpert 2017-2022

Other

  • IPv6 Forum Certified Network Engineer and Network Trainer, Gold level
  • ETS TOEIC Gold level (885/990)

Education

SUPINFO International University

International Master of Science in Computer Science, 2008 - 2013

Software development (C, C++, C#, Java), Linux and Windows Server systems, Cisco networking, Oracle (SQL, PL/SQL, Data Warehouse), management. Ran the campus Linux lab (OpenVZ, VMware ESXi), VPN and VoIP workshops for students.

Languages

  • French, native
  • English, professional (TOEIC 885/990)

Activities

  • Proxmox HomeLab maintained continuously: 65 virtual machines in production.
  • TV appearance for Cisco on BFM Business (Tech & Co, 2023), talk on cybersecurity challenges at the FFIE partners’ morning event, and talks for other industry partners.
  • IoT tools for home automation (Raspberry Pi, ESP8266, ESP32).

Technologies

Infrastructure

  • Proxmox VE
  • VMware vSphere
  • VMware vSAN
  • VMware vROps
  • VMware Horizon View
  • PowerCLI
  • Cisco IOS
  • Cisco Nexus
  • Cisco Meraki
  • Citrix XenApp
  • Citrix XenDesktop
  • Debian
  • Veeam
  • Zabbix
  • Puppet
  • PowerShell
  • Python
  • Clustering & HA
  • Ceph
  • NFS
  • iSCSI

Cybersecurity

  • Zero Trust
  • VLAN
  • VXLAN
  • VMware NSX
  • Proxmox SDN
  • Firewall & DMZ
  • pfSense
  • Wazuh (SIEM)
  • PKI
  • VPN
  • IDS / IPS
  • ANSSI
  • ISO 27001

Smart building & digital twin

  • BMS control
  • Unreal Engine 5
  • Datasmith
  • KNX
  • BACnet
  • Modbus
  • MQTT
  • ESP32
  • Python
  • BIM
  • IFC

Teaching

  • Certification tracks
  • Train-the-trainer
  • On-site
  • Remote
  • Hybrid
  • Skills assessment

Contact

To discuss an infrastructure project, a training course or an opportunity, write to me.

julien@berton.me