Application Security Engineer

Who We Are

We're an iconic Aussie brand with a global footprint. Our purpose is to build a connected future so everyone can thrive. We're all about providing the best experience and delivering the best tech on the best network.

This includes making Telstra the place you want to work. For you, that means a having career that grows with you and working with a team powered by human connection that prioritises wellbeing and choice.

About the Role

We are looking for a highly skilled Application Security Engineer with a strong background in automation and DevSecOps to join our team. This role is pivotal in designing and maintaining secure, automated software delivery pipelines and infrastructure. You will collaborate with cross-functional teams including testing, solution design, program management, and architecture to drive innovation and efficiency.

This role can be based anywhere in Australia except Tasmania.

What We Offer

• Performance-related pay
• Access to thousands of learning programs so you can level-up
• Global presence across 22 countries; opportunities to work where we do business.
• Purchased annual leave scheme
• Additional Telstra day off
• Additional 30% off Telstra products and services
• Toolkit provided (laptop + mobile phone + plan paid for)

The Opportunity

You'll lead the design and implementation of automation frameworks, embed security across CI/CD pipelines, and collaborate with cross-functional teams to drive innovation. If you're passionate about DevSecOps, infrastructure automation, and building secure, scalable systems-this is your opportunity to make a real impact in a Defence-focused environment.

Candidates must be Australian citizens and hold, at a minimum, a current Baseline security clearance to be considered for this role. You must also be willing to obtain and maintain NV1 and NV2 security clearances as required. This position requires the ongoing holding and maintenance of an Australian Government Baseline security clearance.
What You'll Do

Telstra Enterprise - Enterprise Operations is responsible for the day-to-day operations of Telstra's enterprise business, including order fulfillment, customer support, and service delivery.

• Lead the design and implementation of automation frameworks and CI/CD pipelines.
• Embed security practices across the software development lifecycle.
• Collaborate with teams to coach, share knowledge, and drive best practices.
• Design and implement end-to-end automation solutions, including API integration and network configuration.
• Work closely with vendors and influence strategic decisions through hands-on experience.
• Maintain and enhance automation platforms using tools such as Ansible, GitLab, and Jenkins.
• Develop scripts for network validation and monitoring.
• Continuously improve processes, frameworks, and system efficiency.
• Contribute to the development of next-generation network automation for Telstra Defence.

About You

• Australian Citizen with Baseline Security Clearance.
• Proficiency in automation and scripting (Python, Shell, Ansible).
• Strong understanding of RedHat Ansible, CI/CD tools (GitLab, Jenkins), and observability platforms (e.g., Splunk).
• Experience with infrastructure management in VMware and Linux environments.
• Solid grasp of network engineering fundamentals (routing, switching, protocols).
• Familiarity with secure coding practices and DevSecOps principles.
• Application security expertise including:
• Code reviews and vulnerability assessments (SAST/DAST)
• Security tool integration in CI/CD pipelines
• Threat modeling and secure architecture reviews
• Incident response and remediation

Desirable Qualifications

• Experience in Defence development environments.
• Exposure to container orchestration (Kubernetes, Docker).
• Knowledge of infrastructure as code (Terraform, CloudFormation).
• Relevant certifications (e.g., OSCP, CEH, GWAPT, CSSLP).

As part of your application with Telstra, you may receive communications from us on for job applications in Australia)
When you join our team, you become part of a welcoming and inclusive community where everyone is respected, valued and celebrated. We actively seek individuals from various backgrounds, ethnicities, genders and disabilities because we know that diversity not only strengthens our team but also enriches our work. We have zero tolerance for harassment of any kind, and we prioritise creating a workplace culture where everyone is safe and can thrive.
We work flexibly at Telstra. Talk to us about what flexibility means to you. When you apply, you can share your pronouns and / or any reasonable adjustments needed to take part equitably during the recruitment process.
We are aware of current limitations with our website accessibility and are working towards improving this. Should you experience any issues accessing information or the application form, and require this in an alternate format, please contact our Talent Acquisition team on or via the additional contact options found