Senior Network Support Engineer

NTT DATA, Inc.; Sydney; On-site; AUD 120,000 - 180,000; Full time

Job summary

NTT DATA is seeking a Senior Network Operations Specialist to join our Sydney IT Infrastructure team. You will oversee enterprise LAN/WAN environments, drive reliability, and guide architecture decisions across data centers, cloud, and remote users.

Ideal candidates bring deep networking protocol knowledge, strong incident management and ITIL-aligned change processes, plus mentoring skills to develop junior staff and elevate operational performance.

Qualifications

• Senior network operations experience in enterprise environments.
• Knowledge of networking protocols and architectures.
• Experience with incident response and change management.
• Ability to mentor junior staff and participate in architectural decisions.

Responsibilities

• Manage and maintain complex LAN/WAN environments.
• Escalation point for high-severity incidents and RCA.
• Lead deployment and optimization of enterprise network monitoring tools.
• Implement network security best practices.
• Coordinate planned maintenance and network migrations.
• Analyze capacity trends for scalability.
• Support ITIL change and incident processes.
• Participate in network design discussions.
• Document SOPs and mentor staff.
• On-call rotation oversight.

Skills

LAN WAN management

Incident management

Root-cause analysis

Network monitoring

Network security

ITIL change management

Network design

Documentation SOPs

Mentoring staff

On-call leadership

Tools

SD-WAN

Routers & Switches

Firewalls

Network monitoring tools

Job description

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NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,

We are currently seeking a Senior Network Support Engineer to join our team in Sydney, New South Wales (AU-NSW), Australia (AU).

Mid to Senior-Level Network Operations Specialist

The Mid to Senior-Level Network Operations Specialist is a critical member of the IT Infrastructure team, responsible for overseeing the operational performance, availability, and scalability of enterprise-wide network systems. This position combines hands‑on technical expertise with operational leadership to ensure the secure, reliable, and optimal delivery of networking services across data centers, branch offices, cloud environments, and remote users.

Operating at a senior technical tier, the role requires deep knowledge of networking protocols and architectures, advanced troubleshooting capabilities, and the ability to guide and mentor junior team members. The ideal candidate brings a proactive mindset to monitoring, incident response, and continuous improvement of network operations while contributing to architectural decisions and strategic infrastructure planning.

Key Responsibilities

• Manage and maintain complex LAN/WAN environments, including routers, switches, firewalls, SD-WAN, and wireless infrastructure.
• Serve as an escalation point for high‑severity incidents and conduct end‑to‑end root cause analysis to prevent recurrence.
• Lead the deployment and optimization of enterprise network monitoring tools
• Implement and enforce network security best practices in collaboration with cybersecurity and compliance teams.
• Coordinate and execute planned maintenance, firmware upgrades, configuration changes, and network migrations.
• Analyze network capacity trends and recommend improvements to support scalability and performance optimization.
• Support change management processes, including scheduled maintenance, upgrades, and network reconfigurations.
• Participate in network design discussions and contribute to architectural decisions that align with business goals.
• Document technical processes, develop standard operating procedures (SOPs), and mentor junior network staff.
• Support incident, problem, and change management processes in accordance with ITIL standards.
• Participate in a 24/7 on‑call rotation or provide senior‑level oversight during cr

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise‑scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start‑up partners.NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in‑office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

NTT DATA endeavors to make https://us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https://us.nttdata.com/en/contact-us . This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here . If you'd like more information on your EEO rights under the law, please click here . For Pay Transparency information, please click here .