Senior Security Engineer - Firewall Security

Australia
Permanent
Full-time

6 days ago

Employment Type PermanentClosing Date 11 Sept 2025 11:59pmJob Title Senior Security Engineer - Firewall SecurityJob Summary As a Security Engineering – Senior Engineer, you are an expert in the Information, Engineering and Cyber Security domains, applying your extensive knowledge in security technologies, cloud and corporate networks to shape the security controls required within solution designs (both people, process and technical) and identify, communicate and help treat corresponding security risks.Through your strong knowledge of existing and emerging technology, you are able deliver a superior security and network experience for our consumers. You do this by drawing on your deep levels of cyber security and engineering knowledge and experience to provide specialist analysis, design, development and deployment in Network and IT specific technology domains.You play a pivotal role in shaping our technology strategy and protecting Telstra’s assets, acting as a trusted adviser to our people, teams, cyber, engineering and DevOps leaders to build our cyber capability.Job DescriptionAs a Senior Security Engineer in Telstra’s Security Engineering team, you’ll help shape and protect the future of our technology environment. You’ll design and implement security controls across our DevOps pipelines, cloud infrastructure, and enterprise networks, ensuring security is embedded at every layer.You’ll work hands-on in a fast-paced Agile environment alongside engineering and DevOps teams to assess and reduce risk across our platforms. This role blends technical depth with strategic influence — ideal for someone who thrives on solving complex challenges and improving security at scale.As a trusted advisor, you'll contribute to secure design and implementation while helping uplift security practices and shape Telstra’s overall security capability.What You’ll Do

Partner with engineering and platform teams to embed security into solution design and delivery lifecycles.
Lead the implementation of security controls within cloud, DevOps, and network environments.
Provide technical consulting and design input across security and network platforms.
Support deployments and changes — including some flexibility for after-hours work as required.
Operate as a subject matter expert, working autonomously and collaboratively within an Agile team.
Contribute to the evaluation and integration of emerging technologies, tools, and best practices.

What you bringYou’re a seasoned Security Engineer or Network Security Specialist with experience supporting enterprise-scale environments. You’re technically strong, a great communicator, and enjoy working across teams to embed secure solutions.We’d love to see:

5–8+ years of experience in network security, cloud security, or infrastructure security roles.
Strong experience with one or more major firewall platforms (e.g. Palo Alto, Cisco FTD, Juniper, Checkpoint).
Solid hands-on skills in routing & switching (e.g. OSPF, BGP, VLANs, port channels, VRFs).
Familiarity with cloud environments (e.g. AWS, Azure) and CI/CD or DevOps security practices.
Experience working in Agile environments and collaborating across multidisciplinary teams.
Degree in Computer Science, Engineering, or a related field (or equivalent experience).

Nice to have (but not required):

Exposure to SR-MPLS or carrier-grade networking.
Certifications such as CISSP, CISM, CCNP Security, or similar.
Experience with automation tools (Terraform, Ansible) or scripting for security use cases.

Why Telstra?

Flexible work – balance your work and life with hybrid and remote options.
16 weeks paid parental leave – for both primary and secondary carers.
Free Telstra mobile plan – stay connected on us.
Device allowance – refreshed every 2 years.
Discounts – on Telstra products and partner services.
Professional development – ongoing opportunities to grow and upskill.
Purchased annual leave – more time when you need it.

If this sounds like the opportunity for you, we’d love to hear from you. Apply now and help secure the future of Australia’s largest telco. We’re committed to building a diverse and inclusive workforce in all its forms. We strongly encourage applications from people of all backgrounds, including those from diverse gender, cultural and linguistic communities, and individuals living with a disability.To learn more about how we support our people, including accessibility adjustments during the recruitment process, visit:

Telstra

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