Network/Voice Engineer

Insight Global; Chicago (IL); Hybrid; USD 100,000 - 150,000; Full time

Job summary

Insight Global is seeking a Network & Voice Engineer for a hybrid, direct-hire role in Chicago. You will design, implement, maintain, and support the organization's network, voice, and unified communications infrastructure, ensuring high availability and security.

The role emphasizes hands-on networking with Cisco LAN/WAN, SIP trunks, SBCs, and UC solutions, plus Tier 3 troubleshooting, DR planning, vendor management, and ongoing architecture improvements.

Qualifications

• 5+ years as a Network Engineer.
• Cisco LAN/WAN/VPN, routing, switching, firewalls.
• Voice systems, SIP trunks, SBCs, unified communications.
• Strong troubleshooting for complex network and telephony.
• Security, disaster recovery, and business continuity planning.
• Experience with architecture, capacity planning, vendor management.
• CCNA/CCNP/CCIE preferred.
• Proficient in BGP, OSPF, VPN, VoIP.
• Scripting/Automation (Python, Ansible) advantageous.
• Financial services industry experience.

Responsibilities

• Design, implement, maintain, and support network, voice, and UC infrastructure.
• Tier 3 escalation for critical issues.
• Drive security, compliance, and DR planning.
• Manage vendor and ISP relationships.
• Maintain technical documentation and architecture roadmaps.
• Contribute to capacity planning and infrastructure optimization.
• Lead Network Refresh projects and vendor communications.
• Participate in after-hours support as needed.

Skills

Networking

Cisco LAN/WAN

Voice systems

SIP Trunks

SBCs

Unified communications

Troubleshooting

Security & Compliance

Disaster Recovery

Documentation

Vendor Management

Automation (Python/Ansible)

Education

CCNA/CCNP/CCIE

Job description

Job Description

An employer is seeking a Network & Voice Engineer for a hybrid, direct-hire opportunity. This individual will be responsible for the design, implementation, maintenance, and support of the organization's network, voice, and unified communications infrastructure, ensuring high availability, security, and performance across all environments. The ideal candidate will have hands‑on experience supporting enterprise network technologies, including LAN/WAN/WLAN, VPNs, routing, switching, firewalls, and multi‑site connectivity, as well as expertise with voice platforms, SIP trunking, SBCs, call routing, and unified communications solutions. The breakdown would be roughly 80% networking related and 20% telephony. The firm is using the Zoom phone system, which is largely managed by the vendor, but the candidate should have some basic knowledge on the fundamentals of telephony and voice systems. This role requires strong troubleshooting skills in complex network and telephony environments and will serve as a Tier 3 escalation point for critical issues. Additional responsibilities include driving security and compliance initiatives, supporting disaster recovery and business continuity planning, managing vendor and ISP relationships, maintaining technical documentation, and contributing to network architecture, capacity planning, technology roadmaps, and infrastructure optimization efforts. Some of the upcoming projects the firm is working on include Network Refresh projects, where this person will get to have direct ownership in some design, vendor communication, and hands on aspects. Candidates should be comfortable participating in after‑hours support as needed.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to [e-mail] learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Skills and Requirements

• 5+ years as a Network Engineer
• Strong experience supporting Cisco-based LAN/WAN/WLAN/VPN environments, routing, switching, firewalls, and multi-site connectivity.
• Hands‑on expertise with enterprise voice systems, SIP trunks, SBCs, call routing, provisioning, and unified communications.
• Proven ability to monitor, troubleshoot, and resolve complex network and voice infrastructure issues.
• Knowledge of network security, compliance, disaster recovery, documentation, and business continuity planning.
• Experience with architecture, capacity planning, vendor management, technology upgrades, and Tier 3 support.
• Cisco certification: CCNA or CCNP preferred Cisco CCIE certification.
• Proficiency with BGP, OSPF, Multicast, VPN, Cisco Routers, Switches, FTD, Wireless LAN Controllers, and Access Points.
• Experience with VoIP technologies.
• Scripting and automation experience (Python, Ansible, or similar).
• Prior experience in the financial services industry