Network Security & Traffic Integrity Specialist

Liberty Global; Greater London; On-site; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Competitive salary + Bonus

25 days annual leave

LinkedIn Learning & Coursera

Company Pension Contributions

Calm – wellness app (NL only)

Free public transport subscription

Health insurance premium subsidy

Company Laptop, Mobile and Phone Sub

Job summary

Liberty Global is seeking a Network Security Architect to protect our core and global tier-1 networks, ensuring sound security practices across the footprint. You will collaborate with core network architects, engineering and security teams to identify improvements, drive Network Hygiene initiatives and translate findings into actionable risk guidance for the organisation.

The role requires strong knowledge of BGP, DDoS mitigation, monitoring and experience working with international partners

Qualifications

• Solid grasp of Networking, Security and Monitoring.
• Experience securing large (ISP) networks.
• Familiarity with network hygiene measures (BCP38/84, RPKI, BGP/BCPs).
• Knowledge of DoS mitigation, BGP hijacking, CoPP, access-lists, Tacacs, spam/malware/abuse.

Responsibilities

• Serve as an authority on Internet security questions (Network Hygiene, MANRS, DDoS mitigation, BGP routing).
• Trace sources of BGP hijacks/leaks, DDoS, malware, or abuse traffic.
• Review and improve security requirements in policies/guidelines to align with best practices.
• Identify improvements and drive implementation across teams.
• Liaise with Global Security Operations Centre and external organisations to prioritise work.
• Engage with groups like RIPE, CableLabs, RIPE NCC to ensure best-practice security.

Skills

English fluency

Communication

Networking

Security

Monitoring

ISP security

BGP security

Job description

Liberty Global is seeking a Network Security Architect to protect our core and global tier-1 networks, ensuring sound security practices across the footprint. You will collaborate with core network architects, engineering and security teams to identify improvements, drive Network Hygiene initiatives and translate findings into actionable risk guidance for the organisation.

The role requires strong knowledge of BGP, DDoS mitigation, monitoring and experience working with international partners