Network Specialist Virtualization

RMM Consulting Group; Warszawa; On-site; PLN 166,050 - 258,300; Full time

Job summary

RMM Consulting Group is assisting a European Agency in Warsaw with a freelance-based Network Specialist role focused on virtualization and enterprise infrastructure. The contractor will manage, monitor and secure complex IP networks spanning LAN/WAN, cloud and data center domains, ensuring high availability and performance.

The position requires 5+ years IT experience, CCNA/NSX-T and Palo Alto expertise, and English proficiency.

Qualifications

• University degree; 5+ years IT experience; 5+ years in similar role.

Responsibilities

• Administer, monitor and troubleshoot IP networks.
• Implement changes to physical/logical configurations incl. cabling.
• Provide 2nd-line support to users.
• Create and maintain technical docs and SOPs.
• Advise on improvements/upgrades to network infra.

Skills

TCP/IP

Ethernet

DNS/DHCP/NTP

Wi‑Fi 802.1x

TLS PKI

Cisco Nexus/NXos

Palo Alto Firewalls

NSX-T

Windows/Linux

Traffic filtering

Analytical skills

Communication

Team player

Travel up to Europe

Driving license B

Education

University degree

Tools

VMware NSX-T

Palo Alto Panorama

Job description

For our client – European Agency in Warsaw, Poland

B2B, Excellent daily rate

Project Background
The Client requires an Advanced-level Network Specialist Virtualization to support the administration, monitoring and continuous improvement of enterprise network infrastructure, including virtualized network environments. The consultant will contribute to ensuring high availability, performance and security of networking services across LAN, WAN, cloud, and data center domains.

Key Responsibilities

• Administer, monitor and troubleshoot IP networks
• Perform changes in physical and logical network configurations, including installation/removal of devices and cabling
• Provide 2nd line support to system and network users
• Create and maintain technical documentation and operating procedures
• Advise on improvements, changes or upgrades to network infrastructure

Required Profile & Qualifications

• Very good understanding of TCP/IP protocols and IP routing
• Very good understanding of Ethernet switching protocols
• Good knowledge of network services (DNS, DHCP, NTP, etc.)
• Good understanding of wired and wireless access technologies (Wi‑Fi, 802.1x/EAP)
• Understanding of authentication and encryption mechanisms (HTTPS, SSL/TLS, PKI, X.509)
• Hands‑on experience with network devices (Cisco routers/switches, firewalls, wireless controllers)
• Knowledge of endpoint network configurations (Windows, Linux, iOS)
• Experience with traffic filtering (stateful/stateless)
• Strong analytical and troubleshooting skills
• Excellent communication skills (technical and non-technical)
• High attention to detail and strong sense of responsibility
• Ability to work under pressure with minimal supervision
• Proactive attitude and team‑oriented mindset
• Physically fit for technical duties (e.g. rack mounting, cabling)
• Ability to travel occasionally within Europe (up to 15 trips/year)
• Valid Category B driving license

Education & Experience
University degree
Minimum 5 years of IT professional experience
Minimum 5 years of experience in a similar position

Technical Knowledge

Mandatory:

• Cisco CCNA or VMware Network Virtualization certification (or equivalent)
• Very good knowledge of VMware NSX‑T platform
• Strong understanding of VMware ESX networking (distributed switching, routing, micro‑segmentation)
• Hands‑on experience with Palo Alto next‑generation firewalls and Panorama
• Experience managing Cisco Nexus and Catalyst switches
• Knowledge of other virtualization platforms (e.g. Nutanix, Proxmox)
• Knowledge of network‑level encryption (IPsec, IKE, DMVPN)

Language
Working knowledge of English (B2 or higher)

Engagement Terms
Freelance‑based engagement
Full-time (40 hours/week), flexible hours negotiable
Initial 220 working days, with potential extensions up to a total of 220 + 220 + 220 + 250 days over approximately 50 months

Security Requirements
Certificate of Good Conduct (not older than 3 months)