Senior Network Engineer

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions. As a Senior Network Engineer within Optus Enterprise Professional Services, you will lead the design, implementation, and support of complex enterprise networking, security, wireless, and IP telephony solutions for customers across a range of industries. Acting as a senior technical expert, you will work closely with customers, project teams, architects, and sales stakeholders to deliver high-quality outcomes, provide consultancy services, and drive successful project delivery. The role combines deep technical expertise, customer engagement, solution design, mentoring, and technical leadership to ensure exceptional customer experiences and successful business outcomes. Due to the nature of our Federal Government customers, applicants must be Australian Citizens and hold a current NV1 AGSVA Security Clearance What You'll Do Design, implement, and support complex enterprise networking, security, wireless, storage, and IP telephony solutions for Optus customers. Lead technical delivery activities throughout project lifecycles, including system analysis, solution design, implementation, testing, migration, and troubleshooting. Partner with customers, project managers, and delivery teams to ensure successful project execution, effective communication, and outstanding customer outcomes. Support pre-sales activities by contributing to solution scoping, technical reviews, effort estimation, proposals, and customer engagement activities. Provide technical leadership and mentoring to junior and mid-level engineers, sharing knowledge, best practices, and engineering expertise. Drive continuous improvement through technical certifications, knowledge sharing, innovation, adherence to quality standards, and contribution to engineering best practices. What You'll Bring 8+ years of experience designing, implementing, and supporting enterprise networking, unified communications, security, wireless, and infrastructure solutions. Proven experience as a technical lead delivering complex customer projects, including solution design, implementation, troubleshooting, and customer-facing consultancy. Strong expertise across Cisco networking technologies, including routing and switching, MPLS, QoS, BGP, OSPF, EIGRP, IPv4/IPv6, security, wireless, and collaboration platforms. Industry certifications such as CCNP, CCIP, CCVP, CCIE, or equivalent, with a commitment to maintaining and expanding technical expertise. Exceptional customer engagement, stakeholder management, and communication skills, with the ability to build trusted relationships and influence outcomes at all levels. Strong analytical and problem-solving capabilities, with experience diagnosing complex technical issues and delivering practical, customer-focused solutions. Commercial awareness and experience supporting pre-sales activities, solution scoping, technical proposals, and project profitability. A collaborative and proactive mindset, with the ability to mentor others, work autonomously, manage competing priorities, and deliver results in fast-paced customer environments. Additional Requirements Valid driver's licence and ability to travel to customer sites as required. Flexibility to participate in after-hours project implementations, customer support activities, and occasional interstate travel when business needs require. The good stuff…. Competitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and unique shopping discounts with our retail partners. Flexible working arrangements with opportunities to work three days in the office, two days remote or home. 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 employee-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network and Express Yourself (LGBTQIA+). 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 or call 1800 309 170. For more information on Diversity, Inclusion & Belonging at Optus, please visit