Network Engineering - Engineer

Employment TypePermanent
Closing Date8 Oct 2026 11:59pm
Job TitleNetwork Engineering - Engineer
Job Summary
The Network Engineer is an important contributor in ensuring that the Telstra network delivers a superior network experience for our consumer and business customers. You use your telecommunications network skills and experience to contribute to specialist analysis, design, development and deployment in specific network technology domains, including how this technology inter-operates with other technologies.Job DescriptionRole Purpose
The Network Engineering Engineer is responsible for designing, testing, validating and supporting mobile network technologies to ensure Telstra delivers reliable, high-quality services to customers.
This role has a specialised focus on International Roaming (IREG) testing, ensuring seamless interoperability between Telstra’s mobile network and global partner networks through robust validation, certification, and test execution.
The role contributes to engineering excellence by applying telecommunications expertise, automation practices, and DevSecOps methodologies to improve network performance, reliability, and customer experience.
Key ResponsibilitiesInternational Roaming (IREG Testing)
Execute and support end-to-end IREG (International Roaming) testing across voice, SMS, data, and emerging services (e.g. VoLTE, 5G roaming).
Coordinate with international carrier partners to plan, schedule, and complete roaming test cases and validations.
Validate roaming interoperability including: Network signalling (SS7 / Diameter / 5G SBA where applicable) Billing and charging scenarios Fraud and security controls
Analyse test outcomes and identify defects, configuration gaps, or interoperability issues.
Support certification and onboarding of new roaming partners to ensure compliance with Telstra and industry standards.
Engineering & Technical Delivery
Contribute to the design, integration, and testing of network platforms and services to meet business and regulatory requirements.
Develop and execute test strategies, test cases, and automation frameworks to improve testing efficiency and coverage.
Support troubleshooting of complex network and roaming issues, working across multiple domains and vendors.
Collaborate with Product Owners, architects, and vendors to translate requirements into technical solutions.
Automation & Continuous Improvement
Build and enhance test automation capabilities aligned with DevSecOps and CI/CD practices.
Drive efficiency by creating repeatable testing patterns and reusable frameworks.
Continuously review processes to improve speed, quality, and reliability of testing and delivery.
Stakeholder & Vendor Engagement
Work closely with: International carriers and roaming partners Internal network engineering and operations teams Vendors supplying network platforms and solutions
Assist in evaluating vendor capabilities and interoperability readiness for roaming services.
Key Skills & ExperienceTechnical Skills
Strong understanding of mobile core networks (3G/4G/5G) and roaming architecture
Experience with IREG testing, roaming certification, or inter-operator testing
Knowledge of: Signalling protocols (SS7, MAP, CAMEL, Diameter) IP networking fundamentals (TCP/IP, DNS, routing)
Exposure to network testing tools, automation frameworks, and CI/CD pipelines
Capabilities
Strong analytical and problem-solving skills in complex telecom environments
Ability to interpret test results and translate into actionable engineering outcomes
Experience working in Agile / DevOps environments
Strong stakeholder engagement and communication skills
Accountabilities
Ensure successful completion of IREG testing and onboarding of roaming partners
Maintain high standards of network quality, interoperability, and compliance
Contribute to continuous improvement of testing frameworks and automation
Support delivery of reliable and seamless international roaming customer experience
Ways of Working
Agile delivery aligned to quarterly priorities and OKRs
Collaboration across cross-functional squads and global partners
Strong focus on automation, quality engineering, and operational excellence
Success Profile (What “Good” Looks Like)
Roaming partners onboarded with minimal defects and high first-time test pass rate
Reduced time to execute and complete IREG testing cycles
Improved automation coverage and efficiency across testing activities
Strong contribution to network reliability and customer roaming experience