Network Security Specialist
Core
Ensure sound security protection and monitoring for Liberty Global's core and global tier-1 network, including ISP networks.
Role type
Senior Network Security Specialist (ISP)
Builds
Security policies, monitoring use cases, incident response playbooks, and technical specifications for global network infrastructure.
Domain
Internet Service Provider (ISP) networking and Internet security
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
BGP routing and security, DDoS mitigation, network hygiene (BCP38/84, RPKI), DNS/DNSSEC, security monitoring, incident response, policy development, technical documentation, stakeholder liaison
Preferred skills
RIPE NCC certification, experience with M3AAWG/CableLabs/RIPE, scripting/programming, security analytics
Technologies
BGP, RPKI, CoPP, DNSSEC, Arbor, Splunk, Grafana, Elastic Stack, RIPE RIS, whois/RDAP
Responsibilities
Identify and drive improvements on Network Security for the tier-1 core network; Trace and identify sources of BGP hijacks, leaks, DDoS, and malware; Review and update security requirements in policies/guidelines; Translate security findings into risks and advise on blocking issues; Act as a mentor, technical lead, and escalation point; Monitor and respond to security incidents
Seniority
Senior, hands-on IC
