Service Infrastructure Engineer | Full time

Location: From any Lindsay or SRT site. Hobart, Melbourne, Sydney, Perth, Brisbane – Australia.

Work Pattern: Monday to Friday during key business hours

Salary: $135000 - $150000 + 12% Super

About the Role The Senior Infrastructure Engineer is responsible for the deployment, support and continuous improvement of Lindsay Australia's national network and cybersecurity infrastructure. The role will support Fortinet-based projects across more than 60 sites while providing Level 3 operational support to ensure secure, reliable and scalable connectivity for the business. The position requires robust Fortinet expertise, experience with SD-WAN, firewalls, switching and wireless technologies, and the ability to manage infrastructure projects from design through implementation.

Due to the transition away from outsourced network support services, Lindsay Australia requires an experienced Fortinet-certified engineer to lead the deployment, management, and optimisation of network and security infrastructure across more than 60 national sites. The role will be responsible for delivering strategic network projects, supporting business-as-usual operations, maintaining security compliance, and ensuring the ongoing availability, performance and resilience of critical infrastructure.

Key Responsibilities

Lead the rollout and standardisation of network infrastructure across more than 60 national sites.

Manage and maintain Fortinet SD-WAN services to ensure resilient and optimised connectivity between sites, cloud services and datacentres.

Provide Level 3 support for network, firewall and security incidents.

Develop and maintain security policies, routing standards and network design documentation.

Monitor network performance, availability and security posture, implementing improvements where required.

Participate in infrastructure projects including:

Site acquisitions and integrations

Network refreshes

Security uplift initiatives

Cloud connectivity projects

Business continuity and disaster recovery planning





Work closely with internal IT teams, business stakeholders and external vendors to deliver solutions that meet operational requirements.

Ensure compliance with company cybersecurity frameworks, Essential Eight controls and industry best practices.

Maintain technical documentation, network diagrams, support procedures and solution designs.

Participate in after-hours support and major incident response activities as required.

Essential Requirements - Strong hands-on experience with:

FortiGate

FortiManager

FortiAnalyzer

FortiSwitch

IPSec VPNs

SD-WAN

BGP and OSPF routing

Network segmentation and security policies

Experience managing multi-site WAN environments.

Strong troubleshooting and problem-solving skills.

Experience working within ITIL-based service environments.

Excellent written and verbal communication skills.

Minimum 5 years' experience supporting enterprise network environments.

Desirable NSE6 or NSE7 certification.

Experience with Microsoft Azure and/or AWS

Knowledge of NIST Cyber Security Framework and Essential Eight.

Experience within transport, logistics or warehousing environments.

Qualifications

Fortinet NSE5 or higher (mandatory)

Relevant tertiary qualification in Information Technology, Networking or Cyber Security (preferred)

Why Join Us?

Work with modern technologies across a national business

Gain exposure to a diverse IT environment

Career development and learning opportunities

Supportive team culture with experienced IT professionals

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Referral Bonuses for successful sharing a good candidate This role will work as part of the Lindsay Australia IT Operations team and will play a key role in modernising and securing the organisation's national technology platform. The successful candidate will be entrusted with ownership of critical network infrastructure and will contribute directly to strategic projects that support the continued growth of the business. If this sounds like the role to, please reach out to the recruitment team at [email protected]

📌 Senior Infrastructure Engineer (Sydney)
🏢 Lindsay Australia
📍 Sydney