Job Opening: Senior UC Engineer – Ribbon SBC Specialist (L2/L3 Support) || Jersey City, NJ (Day 1 Onsite)

[rajat jaiswal]

Job Opening: Senior UC Engineer – Ribbon SBC Specialist (L2/L3 Support)

Experience: 4+ Years overall (with a strong Unified Communications background)

Location:  Jersey City, NJ (Day 1 Onsite)

Job Type: Long-term Contract

📌 Position Overview

We are looking for an experienced L2/L3 Unified Communications Engineer specializing in Ribbon Session Border Controllers (SBC). In this role, you will be responsible for ensuring high availability, troubleshooting complex voice signaling issues, and managing carrier-grade interconnects. The ideal candidate has deep expertise in SIP protocol analysis, media traversal, and multi-platform UC integrations (Cisco, Zoom, Microsoft Teams).

🎯 Key Responsibilities

• L2/L3 Technical Support: Provide advanced technical support for Ribbon SBC deployment, maintenance, and day-to-day operations.
• SIP & Core Troubleshooting: Diagnose and resolve complex SIP signaling failures, registration issues, advanced routing/policy engine faults, and codec/DTMF mismatches.
• Media & Audio Resolution: Troubleshoot voice-path anomalies including one-way/no audio, RTP anchoring, NAT/firewall traversal, and security policy blocks (TLS/SRTP).
• Platform Interoperability: Manage and optimize multi-vendor integrations connecting enterprise systems (Cisco Webex, Zoom Phone, Teams Direct Routing) with global telecom carriers.
• Lifecycle & Operational Tasks: Execute complex changes, implement translation/normalization rules, manage security certificates, and coordinate patches/upgrades.
• Trace & Log Analysis: Perform deep packet capture and log analysis using Ribbon EMA, CLI, and Wireshark to generate SIP ladder diagrams for escalation resolution.
• Documentation: Create and maintain technical runbooks, rollback strategies, and standard operating procedures (SOPs).

💼 Must-Have Technical Skills

• Ribbon Expertise: Proven, hands-on experience with Ribbon SBC configuration, session routing, and platform maintenance.
• Protocol Mastery: Deep knowledge of SIP, SDP, RTP/RTCP, and voice security mechanisms (TLS/SRTP).
• Trace Tools: Proficiency in analyzing raw call traces, packet captures, and logs to trace end-to-end call flows.
• Carrier Knowledge: Solid experience managing carrier-side SIP trunks, enterprise routing tables, and central policies.

🎓 Qualifications & Experience

• Bachelor’s degree in Computer Science, Telecommunications, or an equivalent technical field.
• 4+ years of dedicated experience in Voice/UC engineering supporting Enterprise/Carrier-grade Ribbon infrastructures.
• Certifications on Ribbon SBC platforms or relevant UC technologies (Cisco, Zoom) are a major plus.

Thanks

Rajat 

Saibber

Raj...@Saibber108.com

T: 717-214-6990 ext 426 

https://www.linkedin.com/in/rajat-jaiswal-339a6763/