Network Engineer

Centorrino Technologies Pty Ltd.; Adelaide; On-site; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible working arrangements

Supportive team environment

Diversity and inclusion

Dress for your day

Job summary

Flinders Port Holdings seeks a Senior Network and Operational Technology Engineer to design, implement and manage our enterprise network and OT integration. You will ensure stability, security, and performance across the network and OT systems while leading critical projects and mentoring junior engineers.

You will collaborate with cyber security, manage incidents, and drive improvements in scalable networks, disaster recovery, and high availability across ports and data centres.

Qualifications

• Bachelor of Information Technology or equivalent level of skills and knowledge gained through experience.
• Extensive network engineering experience with Cisco routers, switches, site commissioning, and fault-finding.
• Strong firewall/security experience including Palo Alto and Fortinet firewalls, policy management, NAT, VPNs, and high availability.
• Knowledge of security protocols (IDS/IPS, NAC) and advanced routing (BGP/OSPF/EIGRP/MPLS).
• Designing and managing complex LAN/WAN/WLAN/data centre architectures with high availability and disaster recovery.
• Hands-on experience with wireless networks (5G/LTE), cloud environments (AWS/Azure/GCP), and VoIP with QoS management.
• Certs (CCNA/CCNP/CCIE) are desirable.

Responsibilities

• Design, implement, and manage scalable, secure network solutions.
• Monitor and maintain network systems for optimal performance.
• Perform regular upgrades to improve security and capacity.
• Collaborate with Cyber Security to enforce robust protections.
• Provide advanced technical support and root-cause analysis.
• Participate in on-call rotation as required.
• Manage external vendor relationships and document solutions.

Skills

Cisco networking

Firewall security

Palo Alto Networks

Fortinet FortiGate

BGP/OSPF/EIGRP/MPLS

LAN/WAN/WLAN design

Cloud networking (AWS/Azure/GCP)

5G/LTE wireless

VoIP and QoS

Security policies and NAT

Networking documentation

Vendor management

Education

Bachelor of Information Technology or equivalent

Two or more vendor certifications (CCNA/CCNP/CCIE)

Tools

Palo Alto Firewalls

Fortinet FortiGate

Job description

Senior Network and Operational Technology Engineer

About Flinders Port Holdings

Flinders Port Holdings own and operate Flinders Adelaide Container Terminal, the port of Port Adelaide as well as the six key regional ports of Port Giles, Port Lincoln, Wallaroo, Port Pirie, Klein Point and Thevenard. We also provide integrated supply chain solutions through Flinders Warehousing and Distribution. Beyond ports, we deliver hydrographic survey services through HydroSurvey Australia. Flinders Port Holdings is ranked as one of South Australia’s top 10 companies, with an annual turnover of more than $300 million. We employ over 650 people and indirectly support 24,000 jobs in South Australia. Through our operations we facilitate over $25 billion in international trade annually and are the key platform for South Australian two‑way trade in goods.

Role Overview

The Senior Network Operational Technology Engineer is responsible for designing, implementing, and managing the organisation’s network infrastructure. The position ensures stability, security, and performance of the network, while leading strategic network projects, troubleshooting complex issues, and mentoring junior engineers. The Senior Network and Operational Technology Engineer also plays a pivotal role in integrating Operational Technology (OT) systems, ensuring seamless network and OT operations across the enterprise.

Key Responsibilities

• Design, implement, and manage scalable, secure, and highly available network solutions that meet business needs;
• Continuously monitor and maintain network systems for optimal performance, addressing issues proactively;
• Conduct regular network upgrades to improve efficiency, capacity, and security, ensuring compliance with security policies;
• Collaborate with the Cyber Security team to implement robust security measures, protecting the network from threats;
• Provide advanced technical support, resolving incidents and outages, analysing root causes, and improving network services;
• Participate in the after‑hours on‑call roster, approximately one week every six weeks, providing timely support and responding to network and operational technology incidents and outages as required;
• Manage external vendor relationships, maintain accurate documentation, and align network solutions with business needs through stakeholder collaboration.

About you

• Bachelor of Information Technology or equivalent level of skills and knowledge gained through experience;
• Extensive network engineering experience with expertise in Cisco routers, switches, site commissioning, and fault‑finding;
• Strong firewall and network security experience, including hands‑on expertise with Palo Alto Networks and Fortinet (FortiGate) firewalls, firewall policy management, security zones, NAT, VPNs, high availability, and security rule configuration and troubleshooting;
• Strong knowledge of network security protocols, including firewalls, VPNs, NAC, IDS/IPS, and advanced routing protocols (BGP, OSPF, EIGRP, MPLS);
• Proficient in designing and managing complex network architectures (LAN, WAN, WLAN, data centres) with a focus on high availability, disaster recovery, scalability, and network virtualisation;
• Hands‑on experience with wireless networks (5G, LTE), cloud environments (AWS, Azure, GCP), and VoIP deployment, with expertise in QoS management and disaster recovery;
• Relevant certifications (CCNA, CCNP, CCIE) are highly desirable;
• Ability to work independently or collaboratively, with a customer‑focused mindset and a commitment to staying updated on the latest technology trends.

Benefits

• Flexible working arrangements;
• A supportive, motivated and collaborative team environment;
• An inclusive workplace that values diversity;
• Dress for your day office attire.

Requirements

• At least 8 years of networking‑focused experience in IT, with strong exposure to enterprise infrastructure and complex networking environments;
• Advanced expertise in designing, building, supporting, and troubleshooting enterprise network solutions and architectures;
• Proven experience delivering secure, scalable, and resilient network solutions aligned to customer and business requirements;
• Strong technical documentation skills, with the ability to produce high‑quality design documents, implementation plans, support documentation, and operational procedures;
• Professional‑level certifications across two or more vendor technologies, preferably Cisco, Aruba, NSX, or equivalent technologies;
• Experience with technologies such as SD‑WAN, Cisco ACI, Cisco Wireless, SDA/Catalyst Centre, Load Balancing, and Cloud Networking would be highly regarded;
• Demonstrated experience working in client‑facing roles within a Managed Services Provider (MSP) or similar customer‑centric technology environment;
• Extensive knowledge of industry standards, compliance frameworks, and government regulations relating to data communications and networking;
• Proven experience in consulting, project delivery, stakeholder engagement, and resource coordination within complex technology environments;
• Strong analytical, conceptual thinking, and problem‑solving skills, with the ability to assess complex technical challenges and deliver practical, business‑aligned outcomes;
• Excellent communication and stakeholder management skills, with the ability to engage effectively with customers, technical teams, vendors, and senior business stakeholders;
• Proven ability to manage multiple priorities and project deliverables while maintaining a high standard of quality and customer service.

Eligibility

To be eligible, you must be an Australian citizen and able to obtain and maintain an NV1 security clearance.

Application Process

To apply, please submit your application via the designated portal. Email applications will not be considered. A pre‑employment medical assessment (including drug and alcohol screening) and the ability to obtain and hold a Maritime Security Identification Card (MSIC) are required. For applicants in need of a MSIC, support will be provided during the application process.

Other Opportunities

We are also seeking a skilled and experienced Developer to join our team for a role focused on designing, developing, and maintaining software applications. Responsibilities include:

• Design, develop, and maintain software applications;
• Collaborate with cross‑functional teams to identify and prioritise software requirements;
• Write clean, efficient, and well‑documented code;
• Test and debug software applications to ensure they meet quality standards;
• Troubleshoot and resolve software issues;
• Stay up‑to‑date with emerging trends and technologies in software development.

Qualifications (Developer)

• Bachelor’s degree in Computer Science, Software Engineering, or a related field;
• Proven experience as a software developer;
• Strong knowledge of programming languages such as Java, Python, or C++;
• Experience with software development methodologies such as Agile or Waterfall;
• Familiarity with database technologies such as SQL or NoSQL;
• Excellent problem‑solving and analytical skills;
• Strong communication and collaboration skills.

Additional Roles

Business Development Consultant – Remote, with responsibilities including building client relationships, conducting market analysis, and supporting sales strategies.

Project Manager – Remote (HTS Constructions), responsible for managing remote construction projects, creating plans, budgets, and coordinating multidisciplinary teams.

Data Engineer – Halo Labs, focusing on designing and maintaining scalable ETL pipelines, implementing CI/CD, and ensuring data quality across cloud platforms.

Software Sales Executive – Remote, focusing on engaging potential clients, understanding their software needs, and achieving sales targets.

Decisions

Applicants must be Australian citizens and eligible to obtain and maintain an active Australian Government Defence security clearance at the required level. All roles are open to diverse backgrounds, including people with disabilities, all age groups, the LGBTIQA+ community, and culturally diverse backgrounds. Veteran Friendly Workplace policies and Equal Opportunity commitments are observed.

Closing Statement

To submit your application, please use the designated portal or contact the relevant recruitment team. All applications will be processed via the standard electronic application system. Express your interest in the advertised role with up-to-date CV and relevant documentation. Empathy and inclusion are core values. Thank you for your interest in these diverse opportunities at our organization.