Sr IT Network Engineer (NJ)

ZT Systems•Secaucus, NJ

About The Position

About The Role The Network Engineer is responsible for implementing, supporting, and maintaining enterprise networking solutions to meet business requirements. This role focuses on network operations, troubleshooting, and escalation support for LAN, WAN, wireless, and security infrastructure, while participating in network design discussions and improvement initiatives. What You Will Do Provide Tier‑2 operational and escalation support for network incidents and service requests. Perform proactive network monitoring, performance tuning, and fault analysis across multiple secure environments. Support and maintain LAN, WAN, wireless, and network security infrastructure. Participate in network design reviews, technology evaluations, and implementation planning led by senior engineers or architects. Configure, deploy, and maintain network hardware and software. Perform packet captures and advanced troubleshooting to resolve complex network issues. Create and maintain accurate network diagrams, standards, and operational documentation. Work with service providers and vendors for circuit provisioning, troubleshooting, and maintenance activities. Participate in after‑hours or on‑call rotation as required. Take on additional IT responsibilities as business needs evolve. What You Bring Strong understanding of enterprise networking fundamentals including TCP/IP, DNS, DHCP, ARP, SMB/CIFS, and DFS. Hands‑on experience supporting small‑ to large‑scale LAN and WAN environments, including wireless networks. Experience with Layer 2 technologies: VLANs, STP, HSRP. Experience with Layer 3 routing: OSPF; familiarity with BGP or EIGRP preferred. Proficiency with network monitoring and management tools (SNMP, Syslog, NetFlow, RMON). Hands‑on experience with packet capture and traffic analysis tools. Experience installing, racking, stacking, and cabling network equipment in data center or server room environments. Familiarity with copper (Cat5e/Cat6) and fiber‑optic cabling (single‑mode and multi‑mode). Experience configuring and supporting network security solutions such as firewalls, secure remote access, NAC, or Zero Trust‑related technologies and application. Strong analytical and troubleshooting skills. Excellent written and verbal communication skills. Ability to work independently, manage priorities, and operate effectively under time constraints. Preferred / Nice to Have Experience with Cisco ISE (RADIUS, TACACS+, NAC, and connectivity troubleshooting). Experience with SIEM, DDoS mitigation, or micro‑segmentation technologies. VMware ESXi and virtual networking experience. Familiarity with ITIL processes, Jira, Confluence, and change management workflows. Exposure to network automation or scripting (Python, Ansible, etc.). Certifications (optional): CCNA or equivalent Environment context: Cisco / Palo Alto / Arista / Azure / AWS (if applicable) Education Bachelor’s degree (Computer Science or Electrical Engineering) or equivalent combination of education and experience. 3-6 years of hands‑on experience in an enterprise networking environment supporting routing, switching, wireless, and firewall technologies. ZT Systems assesses market data to ensure a competitive compensation package is created for all our employees. The typical base salary for this position is expected to be around $82,500 - $110,000 yearly. If hired, the final base salary will be determined on an individual basis taking into consideration experience, skills, knowledge, education and/or certifications. Base salary is just one component of ZT Systems total rewards philosophy. We take pride in offering a wide range of benefits and perks that appeal to the variety of needs across our diverse employee base. Other rewards may include bonus, paid time off, generous 401k match, tuition reimbursement, wellbeing resources, and more. We are dedicated to building a diverse, inclusive, and authentic workplace, so if you’re excited about this opportunity but your experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles. #LI-DH1 About ZT Systems At ZT Systems, a Sanmina Company, you’ll get to do work you are proud of alongside smart, passionate people. Every day, there are opportunities to collaborate with the best in the industry to design, build, and deliver impactful solutions to world-class customers. Along the way, you will gain hands-on experience in a fast-paced environment that’s challenging, rewarding, and career-defining. A culture built around our values we work hard and think fast. We view challenges as opportunities—to do better, push harder, and be faster than we were the day before. When we fail, we learn from it and move on together. And when we succeed, we use the momentum to go even further. We create value with everything we do, building the foundation of today—and transforming the future of tomorrow. Join ZT Systems and help us build technology infrastructure that connects the world. What We Offer At ZT Systems, a Sanmina Company, we believe that investing in our people is key to our continued growth and innovation. When you join our team, you’ll gain access to a comprehensive and inclusive benefits package designed to support your well-being, financial security, and professional development—both now and in the future. Compensation & Financial Security -Competitive base salary -Performance-based annual bonus eligibility -401(k) retirement savings plan -Tuition reimbursement for eligible education programs Health & Wellness -Comprehensive medical, dental, and vision coverage with access to leading providers -Mental health resources and employee wellness support programs- -Company-paid life and disability insurance Time Away & Work-Life Balance -Paid time off (PTO) and company-paid holidays -Parental leave and family care support programs Growth & Purpose -Structured training programs and on-the-job learning opportunities -Matching gifts and volunteer programs to support causes you care about These benefits are available to eligible employees and are designed to grow with you as your career evolves. Full benefits and eligibility varies by work location. Learn more about our benefits here. ZT Group Int’l. is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind. ZT Systems provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Please be aware that certain positions may require the applicant to either 1) be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or 2) be eligible to obtain an export control license or license exception from the Bureau of Industry and Science & U.S. Department of Commerce. All offers of employment will be conditional subject to the foregoing. ZT Systems, a Sanmina Company is a place where you can do work you’re proud of alongside smart, passionate people who get genuinely excited about what they’re able to accomplish here. We work, learn, and grow together in a supportive and fast-moving environment where decisiveness and action are not only encouraged, but expected. Together, we’re tackling complex challenges and creating impactful solutions in one of the world’s most high-demand industries—that’s where you come in. Learn more at www.ztsystems.com If you are a current ZT Systems employee interested in applying for an internal job, please use this link below: CURRENT EMPLOYEES APPLY HERE By submitting your information and application, you confirm that you agree to the applicant privacy policy linked here: https://ztsystems.com/applicant-privacy-policy/

Requirements

Strong understanding of enterprise networking fundamentals including TCP/IP, DNS, DHCP, ARP, SMB/CIFS, and DFS.
Hands‑on experience supporting small‑ to large‑scale LAN and WAN environments, including wireless networks.
Experience with Layer 2 technologies: VLANs, STP, HSRP.
Experience with Layer 3 routing: OSPF; familiarity with BGP or EIGRP preferred.
Proficiency with network monitoring and management tools (SNMP, Syslog, NetFlow, RMON).
Hands‑on experience with packet capture and traffic analysis tools.
Experience installing, racking, stacking, and cabling network equipment in data center or server room environments.
Familiarity with copper (Cat5e/Cat6) and fiber‑optic cabling (single‑mode and multi‑mode).
Experience configuring and supporting network security solutions such as firewalls, secure remote access, NAC, or Zero Trust‑related technologies and application.
Strong analytical and troubleshooting skills.
Excellent written and verbal communication skills.
Ability to work independently, manage priorities, and operate effectively under time constraints.
Bachelor’s degree (Computer Science or Electrical Engineering) or equivalent combination of education and experience.
3-6 years of hands‑on experience in an enterprise networking environment supporting routing, switching, wireless, and firewall technologies.

Nice To Haves

Experience with Cisco ISE (RADIUS, TACACS+, NAC, and connectivity troubleshooting).
Experience with SIEM, DDoS mitigation, or micro‑segmentation technologies.
VMware ESXi and virtual networking experience.
Familiarity with ITIL processes, Jira, Confluence, and change management workflows.
Exposure to network automation or scripting (Python, Ansible, etc.).
Certifications (optional): CCNA or equivalent
Environment context: Cisco / Palo Alto / Arista / Azure / AWS (if applicable)

Responsibilities

Provide Tier‑2 operational and escalation support for network incidents and service requests.
Perform proactive network monitoring, performance tuning, and fault analysis across multiple secure environments.
Support and maintain LAN, WAN, wireless, and network security infrastructure.
Participate in network design reviews, technology evaluations, and implementation planning led by senior engineers or architects.
Configure, deploy, and maintain network hardware and software.
Perform packet captures and advanced troubleshooting to resolve complex network issues.
Create and maintain accurate network diagrams, standards, and operational documentation.
Work with service providers and vendors for circuit provisioning, troubleshooting, and maintenance activities.
Participate in after‑hours or on‑call rotation as required.
Take on additional IT responsibilities as business needs evolve.

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 with access to leading providers
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 to support causes you care about