Senior Systems Administrator

Senior Systems Administrator, Network Location: San Diego, CA, US Job Summary This Senior Systems Administrator develops and maintains systems, tools, and networks in support of pSemi's enterprise environment. As an individual contributor, you will manage the network infrastructure—including switches, routers, and firewalls—maintaining firmware revisions and security patches for the globally distributed enterprise network. Roles & Responsibilities The design, implementation, and maintenance of a geographically distributed network, including LAN, WAN, Wi‑Fi, and SDWAN. In‑depth understanding and practical knowledge of networking (switching, routing, perimeter security, DNS, and DHCP). Ability to analyze and evaluate networks, identify issues, and provide solutions to ensure optimal performance. Ability to manage, monitor, and troubleshoot a complex network environment. Ability to design, implement, and troubleshoot network performance issues and security infrastructure. Ability to communicate technical information to both technical and non‑technical audiences. Ability to manage several projects simultaneously from design to implementation. Work closely with software vendors to resolve issues and drive new features and infrastructures. Minimum Qualifications (Experience and Skills) Typically requires 6 to 8 years of experience in network technology infrastructure. Experience configuring, maintaining, deploying, and supporting networking hardware such as routers, switches, firewalls, and Wi‑Fi access points. Comprehensive understanding of networking protocols (L2/L3, VLANs, STP/RSTP, TCP/IP, OSPF, BGP, EIGRP). Extensive knowledge of communication and routing protocols used within enterprise environments. Experience with network analysis, monitoring, and alerting tools. Ability to troubleshoot, diagnose, and resolve network performance issues. Working knowledge of 802.1X radius authentication and ClearPass or Radius. Understanding of certificate or PKI infrastructure. Designing, writing, and updating both system documentation and network diagrams. Configure network connections in support of a large virtualization and storage infrastructure. Experience managing cloud environments such as AWS and Oracle Cloud a plus. Excellent written and verbal communication skills and English proficiency. Strong leadership and team‑mentoring skills. Self‑motivated and team‑oriented. Preferred Qualifications Experience managing Cisco, Aruba, or Palo Alto Enterprise Networks. At least one certification in Cisco, Palo Alto, CompTIA Network+ or other networking technologies desired. Support of LAN, WAN, SDWAN, and VPN networks in a VMWare, NetApp environment running Windows Server, SQL Server, and Linux. Demonstrated mastery of TCP/IP switching and routing. Extensive knowledge of Ethernet cabling, multimode fiber optics, and high‑density, high‑bandwidth environments (10 Gbps, 25 Gbps, and greater). Fiber‑channel a plus. Proficient in configuring Cisco switches, Palo Alto firewalls, and Aruba access points. Proficient with VPN technologies (Global Protect). Strong knowledge of virtual and physical server architecture and networking. Proficient knowledge of authentication and access control technologies. Education Requirements Bachelor’s degree in a related field or equivalent combination of education and experience. Work Environment This position is in a professional office environment and routinely uses standard office equipment. Physical Demands Required to talk or hear regularly, stand, walk, use hands to finger, handle, or feel, and reach with hands and arms. Must occasionally lift office products and supplies up to 20 pounds. Salary 125,543.71 – 163,215.86 per year Equal Employment Opportunity Statement pSemi Corporation supports a diverse workforce and is committed to a policy of equal employment opportunity for applicants and employees. pSemi does not discriminate on the basis of age, race, color, religion, sex/gender, gender identity, genetic information, national origin, ancestry, physical or mental disability, military or veteran status, marital status, sexual orientation, or any other basis protected by local, state or federal laws applicable to the Company. #J-18808-Ljbffr