In-Demand Senior network security engineer Jobs in Parramatta, Nsw

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Lead Engineer - DNS

Optus -
Macquarie Park NSW

Apply Now

Job Details

Benefits

Onsite gym
Parental leave

Qualifications

Management
DNS
Problem management
Leadership

Full Job Description

Date: 16 Jun 2026

Location: Macquarie Park, Australia

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Company: Singtel Group

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband, and digital solutions.

We are seeking a Lead Engineer – DNS is a technical authority responsible for the design, reliability, security, and performance of enterprise and internet facing DNS services in Service Provider Network. The role provides L3 escalation for complex DNS issues, leads root cause analysis across multiple layers, and drives continuous improvement in DNS architecture, operational readiness, and service assurance.

This role works in a shared delivery environment, partnering with platform, infrastructure, automation, and security stakeholders to achieve end to end DNS outcomes.

What You’ll Do

Define and maintain Service Provider DNS architecture, standards, and build patterns across authoritative and recursive DNS services.
Act as the point of contact for complex DNS incidents, leading deep diagnostics and root cause analysis of blocking issues.
Own DNS security build and assurance, including DNSSEC strategy and operational readiness.
Define telemetry and monitoring requirements for DNS services to ensure operational readiness.
Deliver DNS SME expertise across various DNS delivery platforms, encompassing F5 BIG-IP DNS and open-source software DNS servers.
Collaborate with platform, infrastructure, automation, and security partners to achieve end-to-end DNS outcomes.

What You Bring

Expert understanding of DNS protocol behavior and strong experience operating DNS services in production at scale.
Practical, hands-on experience in configuring and managing F5 BIG-IP DNS.
Solid grasp of IP networking basics relevant to DNS delivery.
Practical understanding of Linux runtime basics related to DNS services.
Demonstrated ability to operate as a senior SME and technical authority in a 24×7 production environment.
Strong incident leadership and structured troubleshooting skills, with experience producing RCAs and driving problem management.

The good stuff….

Competitive remuneration and colleague discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and outstanding shopping discounts with our retail partners.
Flexible working arrangements with opportunities to work three days in the office, two days remote or home.
Vibrant and collaborative office campus that includes cafes, a convenience store, chill-out zones, GP, post office, gym, and on-site childcare centre.
Competitive leave policies, including additional 'Connected’ days to focus on culture, family, health, community, or whatever’s important to you.
We support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks.
Build meaningful connections through colleague-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network, and Express Yourself (LGBTQIA+).
Put your wellbeing first with free access to counseling and support services, 24/7 — in-person, by phone, SMS, or video.
Free Optus bus from Macquarie University Metro Station (every 6-8 minutes); morning and afternoon.

At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences. We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander. We also want to do our best to make our recruitment process inclusive. If you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email [email protected] or call 1800 309 170.

For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity

Apply Now

Refine Your Search

senior network security engineer jobs in parramatta, nsw

Lead Engineer - DNS

Network Development Engineer, BERE Operations

Sr Network Design Engineer (IP Core)

Senior Software Engineer - Hybrid

Senior Java Spring Boot Engineer | Online Banking & Security | 12 Month Contract

Senior Account Executive

Senior QA Engineer (Backend), Rust / Java

Cloud Platforms Engineer

Senior Backend Engineer - API (AU)

Staff Cloud Infrastructure Security Engineer

Sr. Network Dev Engineer, BERE Operations

Senior Software Engineer, AWS

Quality Assurance Engineer

Associate - Digital Consulting

Systems Engineer, End User Computing

Hub NOC Technician - Live Sport

Lead Engineer, Engineering Productivity

Network Development Manager, GCNA Border Network, GCNA-D

Network Development Engineer, Network Core (Relocation support available)

Automation Engineer

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