Network Engineer

Description We are looking for a Network Engineer to support enterprise voice and network environments in Iselin, New Jersey. This Long-term Contract opportunity is ideal for a communications and infrastructure specialist who wants to deepen expertise across Cisco-based networking, VoIP platforms, and collaboration technologies. The role will focus on maintaining reliable connectivity, strengthening network security, and supporting critical telecommunications services across the organization.

Responsibilities:

• Administer and support enterprise network infrastructure, including Cisco routing and switching environments, to maintain stable and secure operations.

• Configure, monitor, and troubleshoot VoIP and unified communications systems to ensure consistent voice service and collaboration performance.

• Manage firewall technologies such as Palo Alto and Cisco ASA by applying security policies, reviewing traffic behavior, and resolving connectivity issues.

• Support routing architecture by implementing and maintaining Border Gateway Protocol (BGP) configurations across complex network environments.

• Investigate network incidents, perform root cause analysis, and restore service quickly while documenting findings and corrective actions.

• Partner with internal technical teams to plan network improvements, optimize system performance, and support infrastructure-related projects.

• Maintain technical documentation for network designs, configuration standards, operational procedures, and troubleshooting records.

• Evaluate network health through ongoing monitoring and recommend updates that improve reliability, scalability, and security. Requirements • Hands-on experience with Cisco routers and broader Cisco networking technologies in an enterprise setting.

• Working knowledge of Palo Alto Firewall administration, including rule management and traffic analysis.

• Experience supporting Cisco ASA firewalls and resolving security or access-related issues.

• Practical understanding of Border Gateway Protocol (BGP) and its use in routed network environments.

• Background in network engineering with exposure to telecommunications, VoIP, or unified communications platforms.

• Ability to diagnose complex network problems and implement effective technical solutions.

• Strong communication skills with the ability to document configurations and collaborate across technical teams. Technology Doesn't Change the World, People Do.®

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All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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