Senior Network Support Engineer

NTT America, Inc.; Sydney; On-site; AUD 130,000 - 170,000; Full time

Job summary

NTT DATA is seeking a Mid to Senior-Level Network Operations Specialist in Sydney, NSW, Australia. You will oversee operational performance, availability, and scalability of enterprise network systems across data centers, branches, cloud, and remote users.

You will mentor junior staff, guide architectural decisions, and participate in continuous improvement of network operations while ensuring secure, reliable delivery of services.

Qualifications

• Proven experience managing complex LAN/WAN environments.
• Strong troubleshooting and incident response capabilities.
• Experience guiding junior team members and providing technical leadership.

Responsibilities

• Manage and maintain complex LAN/WAN environments (routers, switches, firewalls, SD-WAN, wireless).
• Escalate and perform root cause analyses for high-severity incidents.
• Lead deployment and optimization of enterprise network monitoring tools.
• Enforce network security practices with cybersecurity/compliance teams.
• Coordinate planned maintenance, firmware upgrades, and migrations.
• Contribute to network design discussions and architectural decisions.
• Document SOPs and mentor junior staff in standard procedures.
• Support ITIL-based incident, problem and change management.
• Participate in a 24/7 on-call rotation or provide senior oversight during cr

Skills

LAN/WAN management

Network monitoring

Incident response

Security best practices

Mentoring junior staff

Job description

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.

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 (http://us.nttdata.com/en/compliance#eeos) . If you'd like more information on your EEO rights under the law, please click here (http://us.nttdata.com/en/compliance#know-your-rights) . For Pay Transparency information, please click here (http://us.nttdata.com/en/compliance#ppnp) .