Senior Network Engineer: Low-Latency Trading Infra

Firesoft People; Sydney; On-site; AUD 150,000 - 210,000; Full time

Job summary

Firesoft People partners with a global trading firm to recruit a Senior Network Engineer in Sydney. You will design, support and enhance infrastructure spanning exchanges, colocation facilities and on-prem networks, delivering low-latency, reliable systems.

You’ll own major upgrades, optimise networks, and drive automation using Ansible, Zabbix and Python while communicating decisions clearly and maintaining composure under time pressure.

Qualifications

• Typically five or more years working with complex, mission-critical infrastructure.
• Strong core and WAN network design experience.
• Deep hands-on knowledge of BGP, OSPF, firewall policies and packet-level troubleshooting.
• Multicast networking experience, including PIM and IGMP.
• Experience with colocation and on-premises switching and connectivity.
• Strong Linux skills, ideally with RHEL in high-performance environments.
• Experience with infrastructure automation, configuration management and monitoring.
• Clear communication and a proactive approach to identifying risks and improving systems.

Responsibilities

• Network performance and resilience: Maintain and improve highly available core and WAN networks across routing, switching, multicast and exchange connectivity.
• Design and troubleshooting: Design and optimise environments using BGP, OSPF, PIM and IGMP, investigating complex issues through packet captures and detailed analysis.
• Security and recovery: Own firewall policies, implement security controls and strengthen disaster recovery procedures.
• Infrastructure engineering: Support and tune Red Hat Enterprise Linux across bare-metal hardware and hypervisors.
• Major upgrades: Lead maintenance windows and infrastructure changes, coordinating with engineering teams, exchanges and colocation providers.
• Automation and visibility: Improve configuration management, monitoring and operational tooling using Ansible, Zabbix and Python.
• Continuous improvement: Respond to incidents, uncover root causes and turn those findings into lasting improvements in reliability and performance.

Skills

Network design

BGP

OSPF

PIM

IGMP

Firewall policies

Packet-level troubleshooting

Colocation

On-premises switching

Linux (RHEL)

Automation

Ansible

Zabbix

Python

Monitoring

Tools

Ansible

Zabbix

Python

Job description

Firesoft People partners with a global trading firm to recruit a Senior Network Engineer in Sydney. You will design, support and enhance infrastructure spanning exchanges, colocation facilities and on-prem networks, delivering low-latency, reliable systems.

You’ll own major upgrades, optimise networks, and drive automation using Ansible, Zabbix and Python while communicating decisions clearly and maintaining composure under time pressure.