Senior Staff Network Engineer
About The Position
ZT Systems is seeking a hands-on Senior Staff Network Engineer to support and improve LAN, WAN, wireless, and voice infrastructure across office, manufacturing, laboratory, and warehouse environments. The engineer will troubleshoot at the packet level, execute production changes, proactively address issues, and partner with network architects to implement architecture and design plans. The role includes supporting networks and voice, video, and data services across multiple sites; serving as a Tier 3 escalation point; and performing onsite infrastructure work such as racking, cabling, optics, and MDF/IDF troubleshooting. The engineer is also responsible for keeping network diagrams, port records, and incident documentation current. ZT Systems describes its environment as fast-paced and collaborative, with opportunities to work alongside industry professionals and gain hands-on experience. The company emphasizes a culture of learning from challenges, continuous improvement, and building technology infrastructure that connects the world.
Requirements
- Bachelor's degree in a related field or equivalent practical experience.
- At least 8 years of hands-on enterprise networking experience.
- Advanced experience troubleshooting LAN and WAN issues in a multi-site environment.
- Strong command of TCP/IP, subnetting, DHCP, DNS, NAT, VLANs, and packet forwarding.
- Proven production packet-level troubleshooting experience using Wireshark or similar tools.
- Experience supporting voice and data on shared infrastructure, with practical knowledge of VoIP, QoS, voice VLANs, and PoE.
- Hands-on experience with OSPF, BGP, STP, LACP, and HSRP/VRRP on platforms such as Cisco, Arista, or Aruba.
- Working experience with next-generation firewalls such as Palo Alto or comparable platforms, security policies, and IPsec VPNs.
- Experience with copper and fiber cabling, optics, console access, and out-of-band management.
- Experience executing production changes under a formal change and approval process.
- Track record of identifying problems and driving fixes forward with minimal direction.
Responsibilities
- Analyze packet captures using Wireshark, tcpdump, and SPAN, correlating findings with routing tables, firewall sessions, and logs to identify root causes.
- Support and troubleshoot LAN, WAN, and wireless networks across multiple sites, including routers, switches, firewalls, and ISP circuits.
- Support voice, video, and data services, including VoIP phones and video conferencing equipment.
- Prepare production changes for approval with implementation, validation, and rollback steps, and execute approved changes.
- Serve as a Tier 3 escalation point for complex incidents and investigate recurring issues proactively.
- Perform onsite work such as racking, cabling, optics, and MDF/IDF troubleshooting.
- Keep network diagrams, port records, and incident documentation current.
- Partner with network architects to implement architecture and design plans.
Benefits
- Competitive base salary
- Performance-based annual bonus eligibility
- 401(k) retirement savings plan
- Tuition reimbursement for eligible education programs
- Comprehensive medical, dental, and vision coverage
- Mental health resources and employee wellness support programs
- Company-paid life and disability insurance
- Paid time off (PTO) and company-paid holidays
- Parental leave and family care support programs
- Structured training programs and on-the-job learning opportunities
- Matching gifts and volunteer programs
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What This Job Offers
Job Type
Full-time
Career Level
Senior
