Sr Operation Mgmt Specialist **General Information** Req # WD00085111 Career area: Information Technology Country/Region: Singapore State: Central Singapore City: SINGAPORE Date: Friday, August 1, 2025 Working time: Full-time **Additional Locations** : * Singapore - Central Singapore - Singapore **Why Work at Lenovo** We are Lenovo. We do what we say. We own what we do. We WOW our customers. Lenovo is a US$69 billion revenue global technology powerhouse, ranked #196 in the Fortune Global 500, and serving millions of customers every day in 180 markets. Focused on a bold vision to deliver Smarter Technology for All, Lenovo has built on its success as the world’s largest PC company with a full-stack portfolio of AI-enabled, AI-ready, and AI-optimized devices (PCs, workstations, smartphones, tablets), infrastructure (server, storage, edge, high performance computing and software defined infrastructure), software, solutions, and services. Lenovo’s continued investment in world-changing innovation is building a more equitable, trustworthy, and smarter future for everyone, everywhere. Lenovo is listed on the Hong Kong stock exchange under Lenovo Group Limited (HKSE: 992) (ADR: LNVGY). This transformation together with Lenovo’s world-changing innovation is building a more inclusive, trustworthy, and smarter future for everyone, everywhere. To find out more visit www.lenovo.com , and read about the latest news via ourStoryHub (https://news.lenovo.com/) . **Description and Requirements** **Key Responsibilities:** + Manage, configure, and troubleshoot Cisco routers, switches, and firewalls. + Administer and maintain Palo Alto firewalls, including policy creation, monitoring, and security rule implementation. + Support Aruba NAC solutions, including authentication, authorization, and endpoint compliance. + Configure and maintain F5 load balancers, ensuring efficient traffic distribution and high availability of services. + Monitor network performance, identify issues, and provide timely resolutions. + Collaborate with cross-functional teams to support business operations and network-related projects. + Maintain network documentation, including topology diagrams, device configurations, and incident reports. + Participate in on-call rotation and provide L2 support for escalated network incidents. + Ensure compliance with security policies and industry best practices. **Required Qualifications:** + A min of 3-5 years of experience in network engineering and support. + Strong knowledge and hands-on experience with Cisco networking devices and technologies. + Proficiency in managing Palo Alto firewalls and security policies. + Experience with Aruba NAC implementation and support. + Familiarity with F5 load balancer configuration and troubleshooting. + Understanding of TCP/IP, VLANs, VPNs, routing protocols (BGP, OSPF), and switching concepts. + Excellent problem-solving skills and attention to detail. + Effective communication and collaboration abilities. + To support shirt time: Mon-Fri, 7am-4pm (day) OR 2pm-11pm (night) \#LPS **Additional Locations** : * Singapore - Central Singapore - Singapore * Singapore * Singapore - Central Singapore * Singapore - Central Singapore - Singapore