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Senior Technical Specialist

Optus -
Macquarie Park NSW

Apply Now

Job Details

Benefits

Onsite gym
Parental leave

Qualifications

Management
Engineering
5G
VoIP
Telecommunication
3G

Full Job Description

Senior Technical Specialist

Date: 20 May 2026

Location: Macquarie Park, Australia

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.

The role serves as a subject matter expert within the Integration & Maintenance Engineering team, responsible for testing and integrating new software, hardware, and services into the Optus network, primarily across network infrastructure including firewall, proxy, security gateways, ELK stack, micro & macro segmentation. It also provides architecture, design and operational support , manages vendor issues, and supports fault resolution and integration deliverables, including after-hours work when required. The position demands strong independence, problem-solving skills, and a forward-thinking mindset with a focus on automation and modern testing approaches.

What You'll Do

Provide architecture, design, implementation, and maintenance support cyber security infrastructure.
Lead testing for major programs, coordinating testers and mentoring junior engineers.
Act as a subject matter expert, driving product testing, integration, and vendor defect resolution before deployment.
Manage production cutovers, ensuring minimal customer impact and effective rollback strategies.
Maintain platform ownership of network products, reducing outages through best practices and supported configurations.
Perform software and hardware upgrades, testing new technologies and improving infrastructure efficiency.
Develop high-quality design, testing, and engineering documentation while contributing to network strategy and planning.
Monitor performance, drive optimisation initiatives, and act as the technical interface with vendors and stakeholders.

What You Bring

Degree qualification in Telecommunications Engineering (or related discipline) or equivalent experience.
10+ years’ telecommunications experience with broad and deep technical expertise across areas such as 3G/4G/5G, VoIP, IP networking, network secruity transmission, OSS, cloud, and voice technologies.
Strong understanding of network operations, processes, and customer issue diagnosis, including major fault management across multiple platforms.
Proven ability to communicate complex technical concepts clearly to senior stakeholders, including GM level, and engage with middle and senior management.
Experience in testing, proof of concept (PoC), and network design with practical, solution-focused implementation knowledge.
Experience working in large-scale network environments, with exposure to system integration and performance optimisation.
Professional certifications across key providers like Cisco, Checkpoint, Fortinet will be a plus.

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, 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.
Direct your own development and build future-ready skills with Optus U’s industry-focused micro-credentials, developed with La Trobe and Macquarie Universities.
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 counselling 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

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