Infinite Computer Solutions · 1 day ago
Lead Network Engineer
Campus, IL
Full-time
Onsite
Senior Level, Lead/Staff
6+ years expInfinite Computer Solutions is seeking a Lead Network Engineer to oversee the deployment and management of Unified Communications systems. The role involves configuring voice gateways, ensuring network security, and providing support for VoIP infrastructure.
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Responsibilities
Deploy and configure Cisco Unified Communications Manager (CUCM), Unity Connection, UCCX, CUBE, and SIP trunking
Implement voice gateways, dial plans, QoS policies, and session border controllers (SBCs)
Integrate Microsoft Teams, Zoom Phone, or other cloud-based telephony solutions
Troubleshooting & Support (L2/L3):
Resolve call routing issues, codec mismatches, latency, jitter, and packet loss in VoIP networks
Debug SIP, H.323, MGCP, and RTP/RTCP protocols using Wireshark, SIPp, or other tools
Provide L2 escalation support for voice-related incidents and outages
Monitoring & Optimization:
Monitor voice quality metrics (MOS, Jitter, Latency) using tools like SolarWinds, Cisco Prime, or IR Prognosis
Optimize QoS policies for voice traffic prioritization
Perform capacity planning and upgrades for VoIP infrastructure
Security & Compliance:
Implement voice security measures (TLS, SRTP, firewall policies for VoIP)
Ensure compliance with PCI-DSS, HIPAA, or other regulatory standards (if applicable)
Collaboration & Documentation:
Work with network, security, and cloud teams for cross-functional projects
Maintain network diagrams, SOPs, and change management records
Provide 24/7 network and security support as required
Qualification
Required
QoS
Cisco Unified Communications
SIP Protocol
Wireshark
Solarwinds/Manage Engine
Voice Over IP (VoIP)
Cisco Webex
Cisco Routers
CCNA Voice/CCNP Collaboration
Microsoft Teams Voice Certification
Avaya, Genesys, or other VoIP certifications
ITIL Foundation
6 to 8 +years experience
Bachelors degree in computer science, Telecommunications, or related field
Cisco UC Suite (CUCM, CUC, UCCX, CUBE, IMP)
SIP, H.323, MGCP, RTP/RTCP protocols
Voice Gateway Configuration (ISDN, PRI, FXO/FXS, SIP Trunking)
QoS for Voice (DSCP, LLQ, AutoQoS)
Experience with Cisco Jabber, Webex, and MRA deployments
Troubleshooting with Wireshark, RTMT, etc
Session Border Controllers (AudioCodes, Oracle SBC, Cisco CUBE)
Basic Networking (VLANs, Routing, Firewall ACLs for VoIP)
Strong understanding of network infrastructure, design, and troubleshooting
Excellent communication skills in English (both verbal and written)
Ability to work efficiently in a team-oriented environment with high self-motivation
A customer-focused mindset with strong delivery service ethics
Good understanding of Monitoring tools such as SolarWinds, Grafana, Prometheus, Zabbix etc
Willingness to work in a 24/7 support window
Good understanding of the ITSM processes
Company
Infinite Computer Solutions
Next-Gen Business Technology Platformization™, AI and Product Engineering Services.
10001+ employees
H1B Sponsorship
Infinite Computer Solutions has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (563)
2024 (333)
2023 (378)
2022 (316)
2021 (389)
2020 (496)
Funding
Current Stage
Public CompanyTotal Funding
unknown2010-02-03IPO
Leadership Team
Khaja Lohar
Assistant Vice President
Recent News
2025-11-19
2025-10-09
Company data provided by crunchbase