L4 Senior Network Engineer

FinXL; Sydney; On-site; AUD 140,000 - 170,000; Full time

Job summary

FinXL's Network Engineering Practice is seeking a L4 Senior Network Engineer to lead a major government network transformation project. You will serve as a technical leader deployed to a prominent Federal Government organisation, delivering infrastructure components and architecture documentation.

The role emphasises security hardening, design discipline, and operational readiness, with responsibility for HLD/LLD and evaluation of SD-WAN, ACI, NSX and SDA technologies, while guiding L2/L3

Qualifications

• Experience as a L4 Network Engineer or Technical Lead.
• Strong Cisco networking expertise, firewalls, and F5 load balancers.
• Ability to produce High Level and Low Level Design (HLD/LLD) documents.
• Background in network security hardening and regulatory risk compliance.
• Experience evaluating and adopting SD-WAN, ACI, NSX, and SDA technologies.
• Solid ITIL knowledge for incident, problem, and change management.
• Excellent communication skills for vendor management and stakeholder engagement.

Responsibilities

• Deliver network infrastructure components for strategic projects and initiatives.
• Produce and maintain high-quality network architecture and design documentation.
• Ensure operational readiness and performance of enterprise network services.
• Author highly technical standards, operational procedures, and complex runbooks.
• Execute network security hardening and ensure strict compliance with standards.
• Provide technical leadership and capability uplift for L2/L3 engineering teams.
• Lead technical evaluation and adoption of SD-WAN, ACI, NSX, and SDA technologies.

Skills

L4 Network Engineer

Technical Lead

Cisco networking

F5 load balancers

Network security hardening

ITIL

Vendor management

Stakeholder engagement

SD-WAN

ACI

NSX

SDA technologies

Job description

L4 Senior Network Engineer

Join FinXL's growing Network Engineering Practice and lead a major network infrastructure delivery and modernisation programme for a Government organisation!

FinXL Professional Services is a leading IT consultancy that partners with clients to bridge the gap between business needs and technology capabilities. Since 2003, we have been delivering high-value ICT services across government, finance, telecommunications, and enterprise sectors. Working with FinXL gives consultants access to high-impact client engagements, our dedicated training platform for continuous upskilling, and a collaborative professional services environment.

Join FinXL's growing Network Engineering Practice as an L4 Senior Network Engineer. In this engagement, you will become a key technical leader within our team, deployed to a prominent government client to drive the delivery of a high-profile enterprise network transformation project.

Responsibility

• Deliver network infrastructure components for strategic projects and initiatives.


• Produce and maintain high-quality network architecture and design documentation.


• Ensure operational readiness and performance of enterprise network services.


• Author highly technical standards, operational procedures, and complex runbooks.


• Execute network security hardening and ensure strict compliance with standards.


• Provide technical leadership and capability uplift for L2/L3 engineering teams.


• Lead technical evaluation and adoption of SD-WAN, ACI, NSX, and SDA technologies.

Key Skills & Experience

• Extensive experience as a L4 Network Engineer or Technical Lead.


• Deep-level expertise in Cisco networking, firewalls, and F5 load balancers.


• Proven ability to produce High Level and Low Level Design (HLD/LLD) documents.


• Strong background in network security hardening and regulatory risk compliance.


• Experience evaluating and adopting SD-WAN, ACI, NSX, and SDA technologies.


• Solid ITIL knowledge for complex incident, problem, and change management.


• Excellent communication skills for vendor management and stakeholder engagement.

Why Join FinXL?

• Access FinXL's training and professional development platform for upskilling.


• Lead strategic network infrastructure delivery and modernisation initiatives.


• High-profile engagement within a prominent Federal Government organisation.