About

Infrastructure and security professional with 18+ years designing, building, and securing complex enterprise environments. I work across the full stack of enterprise technology — from BGP routing and data-center switching to cloud architecture, virtualization, and information security. I hold a CISSP, AWS Advanced Networking Specialty, and Nutanix NCP-MCI alongside Cisco professional-level certifications, and I have led technical teams at global carriers (Ericsson, Belgacom/BICS, Vodafone) and consulting firms. Outside work I contribute to open-source tools and write about infrastructure topics on random.sphere.ro.

Experience

  1. Systems Architect Current
    CBN International Europe
    January 2025 – Present
  2. Senior Network & Security Architect Ongoing
    Vipnet Consulting
    October 2007 – Present
    Management of autonomous-system infrastructure; BGP/IPv4/IPv6 routing design; high-availability systems.
  3. Infrastructure Practice Leader
    Inetum
    July 2024 – January 2025
  4. Infrastructure Architect
    Inetum
    June 2022 – January 2025
  5. Infrastructure Implementation Specialist
    Vodafone
    January 2019 – June 2022
    Led team managing network device hardening and enterprise security policies across a national carrier network.
  6. Senior Network Engineer
    Belgacom International Carrier Services (BICS)
    September 2013 – December 2018
  7. Senior IP Network Engineer
    Ericsson
    September 2008 – March 2013
  8. Network Engineer Instructor
    CPPC
    July 2008 – January 2010

Skills

Routing & Switching
BGP IPv4 / IPv6 Cisco IOS-XE Cisco NX-OS IOS XR CatOS Juniper Huawei Nokia / Alcatel
Security & Firewalls
CISSP Check Point Fortigate Cisco ASA Juniper SRX Hardening PKI HSM Entrust
Cloud & Virtualisation
AWS VMware ESXi vSphere NSX Nutanix Docker
Systems & Voice
Linux / Unix Windows Server DNS / DHCP VoIP / SIP SMTP / exim/postfix

Certifications

CISSP — Certified Information Systems Security Professional
CISSP
Valid to Nov 2027
AWS Certified Advanced Networking – Specialty
AWS Advanced Networking
Valid to Jul 2027
Nutanix Certified Professional – Multicloud Infrastructure (NCP-MCI)
Nutanix NCP-MCI
Valid to May 2026
Cisco CCNP — Cisco Certified Network Professional
Cisco CCNP
Cisco CCNA — Cisco Certified Network Associate
Cisco CCNA
Cisco CCIP — Cisco Certified Internetwork Professional
Cisco CCIP

Education

Engineer — Electronics, Telecommunications & IT
Politehnica University of Bucharest
2000 – 2005

Open Source

qmail-spp SPF Plugin
Sender Policy Framework plugin for the qmail-spp framework — one of the earliest open-source SPF implementations for qmail. Available on SourceForge and mirrored at sphere.ro/spf.

Contact

Email
iulian@sphere.ro
LinkedIn
iulian-stan-45627b12
Tech Blog
random.sphere.ro