Senior Network Security Lead — Incident Response & Resilience

DEFEND Limited; Christchurch; Hybrid; NZD 110,000 - 170,000; Full time

Benefits offered by this job

KiwiSaver 3.5%

Health insurance - Southern Cross

Mobile & broadband discounts

Flexible hybrid work environment

Home office allowance

EAP wellbeing support

Job summary

DEFEND in Christchurch, NZ seeks a Senior Network Security Operations Engineer to lead complex fault response, mentor junior engineers, and own critical incidents in a 24/7 on-call rotation. You will deliver technical solutions to customers, diagnose faults, and drive improvements to security and resilience while maintaining clear technical documentation.

Deep networking and security expertise, strong communication, and an ownership mindset are essential for success in this hybrid role with

Qualifications

• Comprehensive knowledge of networking and network security principals applicable to complex customer environments.
• Experience in incident response, troubleshooting and fault resolution.
• Experience in network operations and support with leadership capabilities.
• Collaborative mindset with mentoring and capability development focus.
• Excellent written and verbal communication to convey technical concepts.

Responsibilities

• Lead, deliver, and support technical solutions to customers.
• Provide mentorship and guidance to junior team members as escalation point.
• Perform incident, investigation, and analysis to assess severity and impact.
• Diagnose complex faults and guide resolution development and implementation.
• Identify risks and opportunities for improvement to maintain security and resilience.
• Ensure changes follow change management practices when implemented.
• Provide technical leadership for secure, reliable delivery of network security services.
• Participate in a 24/7 on-call rotation for rapid response.
• Maintain and promote accurate technical documentation.

Skills

Networking

Network security

Incident response

Troubleshooting

Technical leadership

Documentation

Communication

Time management

Job description

DEFEND in Christchurch, NZ seeks a Senior Network Security Operations Engineer to lead complex fault response, mentor junior engineers, and own critical incidents in a 24/7 on-call rotation. You will deliver technical solutions to customers, diagnose faults, and drive improvements to security and resilience while maintaining clear technical documentation.

Deep networking and security expertise, strong communication, and an ownership mindset are essential for success in this hybrid role with