About
Vladimir Arjoca.
Network and Security Engineer with 10+ years of experience designing, operating, and securing enterprise and service-provider network infrastructures.
10+years in network & security engineering
100%network uptime maintained at Voxility for more than three years
12people led and mentored across the engineering team
Professional profile
Hands-on network & security engineering.
10+ years across enterprise and service-provider environments, combining network operations, security platforms, data-center infrastructure, monitoring, automation, and engineering leadership.
Security platforms
Monitoring & automation
Experience
From NOC to leadership.
The timeline below follows the roles listed in my CV, from network administration and NOC operations through service-provider engineering, team leadership, and enterprise network security.
2023 — 2026
Network Engineer
Orange Services · Bucharest
- Administered Palo Alto Panorama for upgrades, policy management, licensing, and centralized log analysis.
- Managed FortiGate, FortiManager, FortiAnalyzer, and Cisco Nexus fabrics using IS-IS underlay and BGP EVPN overlay.
- Supported vulnerability remediation, observability with Grafana/Prometheus, and automation initiatives through GitLab CI/CD.
2018 — 2022
Deputy Network Engineer Supervisor
Voxility · Bucharest
- Led and mentored 9 network engineers, 1 supervisor, and 2 interns.
- Maintained 100% network availability over multiple years while supporting large-scale Anti-DDoS service-provider networks.
- Coordinated peering, Points of Presence, traffic engineering, operational procedures, and final escalation for complex incidents.
2017 — 2018
Network Engineer
Voxility · Bucharest
- Provided 24/7 monitoring and troubleshooting across infrastructure, applications, and data centers.
- Configured and supported Cisco, Dell, Arista, and FortiGate devices across Layer 2 and Layer 3 networks.
2015 — 2017
Junior Network Engineer
Voxility · Bucharest
- Monitored network traffic and equipment and resolved incidents through CRM, phone, and email channels.
2015
NOC Engineer
Cryptowave · Bucharest
- Monitored system health, provided technical support, and maintained server and network equipment in data centers.
2013 — 2015
Network Administrator
Bucur SA · Bucharest
- Managed local networks, Windows desktop/server environments, hardware inventory, software licensing, and technical troubleshooting.
Selected achievements
Results with measurable impact.
A concise view of the outcomes that best represent my operational and leadership experience.
100% network availability
Maintained 100% network uptime at Voxility for more than three years.
Engineering leadership
Led and mentored 9 network engineers, 1 supervisor, and 2 interns.
PoP & traffic engineering
Supported Point of Presence deployments and traffic-engineering initiatives in a large-scale service-provider and Anti-DDoS environment.
Secure infrastructure projects
Contributed to PEPS, a data-center platform migration, and the Propolis Project through secure network and infrastructure changes.
Professional development
Training & Certifications
Technology vendors, certification organizations, and cybersecurity standards and frameworks represented in my professional development.
Cisco
Palo Alto Networks
Fortinet
Amazon Web Services
CertiProf
NIST
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