Senior Network Engineer – Hybrid, Global Trading Infra

Cantor Fitzgerald; Warszawa; Hybrid; PLN 223,000 - 335,000; Full time

Job summary

Cantor Fitzgerald in Warsaw seeks a Network Engineer / Network Operations Analyst to maintain a highly available global financial network. You will provide multi‑level support, contribute to infrastructure design, and help implement secure, scalable connectivity across data centers and remote sites.

The ideal candidate has 5+ years in a high‑volume trading environment, strong Cisco/Junos skills, and experience with firewalls and load balancers.

Qualifications

• 5+ years as a senior network engineer in a high-volume, high-availability financial trading environment.
• Experience delivering and supporting wireless networks.
• Exposure to multi-team and multi-vendor infrastructure environments.

Responsibilities

• Provide day-to-day network support and troubleshooting.
• Contribute to root cause analysis for outages and recommend resolutions.
• Deliver projects and tasks including new installations, platform refresh/redesign (Data Center & Enterprise).
• Turn up services for third parties (CDN, Extranet, VPN).
• Maintain infrastructure hygiene (code upgrades, hardware replacement).
• Implement and operate Palo Alto firewalls and F5 load balancers.
• Drive continuous service improvement and network automation.
• Document infrastructure procedures and update design documentation.
• Manage enterprise monitoring solutions and review new tools.
• Implement BAU changes following change management processes.
• Attend data centers and remote sites for maintenance and audits.
• Participate in shift patterns and on-call support (including weekends).

Skills

Junos OS fundamentals

Cisco IOS fundamentals

Routing protocols

Wi-Fi networking principles

Strong communication

Education

Cisco CCNP Routing & Switching

Wireless foundational certifications

Tools

Job description

Cantor Fitzgerald in Warsaw seeks a Network Engineer / Network Operations Analyst to maintain a highly available global financial network. You will provide multi‑level support, contribute to infrastructure design, and help implement secure, scalable connectivity across data centers and remote sites.

The ideal candidate has 5+ years in a high‑volume trading environment, strong Cisco/Junos skills, and experience with firewalls and load balancers.