* Define and operationalise, in collaboration with key stakeholders, appropriate security controls in network architecture and technologies to protect Telstra and customer information, systems and network assets.* Provide input into the security strategy, standards and frameworks to ensure security controls and hygiene are built into network engineering and technology designs and processes.* Authentically engage with the business and leverage customer feedback to initiate continuous improvements in security engineering and technology designs that are fit for purpose and meet customer requirements.* Contribute to the development of policies, standards and procedures for multiple technologies to build security awareness within the organisation.* Foster a culture of continuous improvement and coaching by modelling Telstra and best practice security engineering standards and actively develop less experienced engineers through coaching, mentoring and collaboration.* Demonstrate strong written and verbal communication skills in promoting security awareness and / or network or technology issues to Leaders / stakeholders.* Translate customer needs and requirements, into realisable and commercially viable secure products, services or systems and/or networks infrastructure and platforms.* Deliver outcomes to a high standard by actively collaborating in security engineering or network design, change implementation and support of platform, applications, services and product issues. This includes operation and support of a complex integration layer deployment.* Significantly contribute to the design, build, installation, integration and maintenance of multiple complex network technologies, platforms, applications, services, products and/or systems.* Ensure that network systems and components interact with Telstra processes and systems to deliver market leading customer experiences. You do this by using your expertise and experience in standardised application interfaces to develop reusable and optimised solutions.* Assess capability of vendor solutions and offerings to meet business requirements. You demonstrate strong written and verbal communication skills in making recommendations for vendor solutions.* Take an active role in managing vendor performance and technology delivery to ensure that agreed technical functionality, time and cost outcomes are met.* Document your work to ensure that business continuity, security and operational activity can seamlessly be supported and maintained by others.* Actively engage in enhancing and improving CI/CD capabilities (testing, automation) to reduce cycle time while retaining quality.* Ensure solutions are re-usable, scalable, reliable, manageable and operable and align with the Telstra technology strategic directions and meet any specific OKR's.**About you** **To be successful in the role, you'll bring skills and experience in:*** Senior-level network engineering expertise with Cisco ACI data centre architecture* Design, deployment, automation, and operational support of Cisco ACI fabrics* Security integration with Palo Alto and Check Point firewalls* Strong experience across Enterprise Data Network (EDN) and Network Services Platform (NSP) environments* In-depth knowledge of MPLS, enterprise routing, and large-scale network connectivity* Azure hybrid networking design and integration* Proven delivery of large-scale enterprise and telco-grade network migrations* Subject Matter Expert (SME) for Nexus-to-ACI transformations* Hands-on experience in network automation and modern operational practices* Extensive experience working in complex, highly regulated Telco environments* Strong stakeholder engagement and delivery experience across multi-year transformation programsWe encourage applications from people of all abilities and backgrounds - including Aboriginal and Torres Strait Islander peoples, the LGBQTI+ community, linguistically diverse, and people living with disability. When you apply, you can choose to note the pronouns you use and /or any reasonable adjustments needed to take part equitably during the interview process. Visit www.telstra.com.au/careers/diversity-and-inclusion or email us at DisabilityandAccessibility@team.telstra.com noting your preferred method of contactWorking at Telstra, we all have a why. Whether it's endless career opportunities, an amazing work-life balance or being able to make a difference, we all know why we're motivated to be our best here. Our people find purpose and pride in being part of Telstra, because we support the things that matter most.In a business as big and diverse as ours, there's a huge breadth of career paths available. Uncover opportunities, broaden your experience, and discover the many areas of our organization there is to explore.> Explore our teams#J-18808-Ljbffr