Senior Network Engineer

Ac3; Wellington; Hybrid; NZD 120,000 - 180,000; Full time

Job summary

Ac3 in Wellington is seeking an experienced Senior Network Engineer to join a large, multi-vendor enterprise environment on a 12-month contract based in Wellington.

You will be hands-on with Cisco networking, Juniper Firewalls, routing, switching and enterprise infrastructure, maintaining and improving critical networks, resolving complex issues, and contributing to design and upgrades.

Qualifications

• Significant hands-on experience as a Senior Network Engineer in large enterprise environments.
• Strong Cisco networking expertise for routing and switching.
• Practical experience managing and configuring Juniper Firewalls.
• Knowledge of firewalls, VPN gateways, load balancing and security.

Responsibilities

• Design, configure, maintain and troubleshoot complex enterprise network infrastructure.
• Manage and support Cisco networking technologies and Juniper Firewalls.
• Configure, maintain and upgrade routers, switches, firewalls, VPN gateways and load balancers.
• Investigate and resolve complex network incidents and performance issues.
• Support network infrastructure upgrades, migrations and technical changes.
• Contribute to network architecture, capacity planning and disaster recovery.
• Monitor network performance, availability and reliability; identify improvements.
• Collaborate with infrastructure teams, vendors and stakeholders.
• Maintain documentation and operational procedures.

Skills

Cisco networking

Juniper Firewalls

Routing

Switching

Network security

VPN gateways

Load balancers

Multi-vendor

Job description

• 6 Months

• Senior Network Engineer | Cisco & Juniper | 6-Month Contract
• Wellington, New Zealand
• 6 Months

We are seeking an experienced Senior Network Engineer to join a large, complex enterprise environment on a 12-month contract based in Wellington.

This is a hands-on technical role suited to an engineer with strong expertise in Cisco networking, Juniper Firewalls, routing, switching and enterprise network infrastructure.

You will be responsible for maintaining, supporting and improving business-critical network environments, resolving complex technical issues and contributing to network design, infrastructure upgrades and ongoing operational improvements.

This opportunity is ideal for someone who enjoys technical challenges, takes ownership of network performance and reliability, and has experience working across large-scale, multi-vendor environments.

Key Responsibilities

• Design, configure, maintain and troubleshoot complex enterprise network infrastructure.
• Manage and support Cisco networking technologies and Juniper Firewalls.
• Configure, maintain and upgrade routers, switches, firewalls, VPN gateways and load balancers.
• Investigate and resolve complex network incidents, performance issues and connectivity problems.
• Support network infrastructure upgrades, maintenance, migrations and technical changes.
• Contribute to network architecture, capacity planning, security and disaster recovery.
• Monitor network performance, availability and reliability, identifying opportunities for improvement.
• Work closely with infrastructure teams, technical stakeholders and external vendors.
• Maintain technical documentation, network configurations and operational procedures.
• Support both project delivery and business-as-usual (BAU) network operations.

What We're Looking For

• Significant hands-on experience as a Senior Network Engineer supporting large, distributed enterprise networks.
• Strong Cisco networking expertise, including routing, switching, configuration and troubleshooting.
• Practical experience managing and configuring Juniper Firewalls.
• Strong knowledge of firewalls, VPN gateways, load balancing and network security.
• Experience supporting complex, multi-vendor network environments.
• Proven ability to diagnose and resolve complex network issues independently.
• Experience implementing network changes, upgrades and infrastructure improvements.
• Solid understanding of change management, incident management and service delivery processes.
• Strong communication skills and the ability to engage with technical teams, vendors and business stakeholders.

Relevant networking qualifications or certifications will be advantageous, although practical enterprise networking experience is particularly important.

Why Consider This Opportunity?

• 6-month contract within a large-scale enterprise environment.
• Hybrid flexibility - just 2 days per week in the Wellington office.
• Work with complex networking technologies and business-critical infrastructure.
• Opportunity to contribute to network design, technical improvements and infrastructure projects.
• A senior, hands-on engineering role offering technical ownership and variety.

This is a Wellington-based hybrid role, requiring 2 days per week onsite in the Wellington office, with the remaining 3 days working from home. Applicants must be based in Wellington or willing to relocate. Fully remote working is not available.