Senior SBC & SIP Voice Engineer (On‑Call)

SiriusXM; California; Hybrid; USD 134,000 - 163,000; Full time

Job summary

SiriusXM is seeking a Senior SBC Engineer to ensure stability, security, and high availability of voice infrastructure in a mission-critical call center environment supporting emergency calls.

You will lead design, configuration, and operation of Oracle SBCs and OCCAS, oversee incident tickets, and drive solutions for reliable SIP-based voice services essential to public safety communications.

Qualifications

• 7+ years of experience in VoIP/SIP network engineering, with 5+ years of hands-on Oracle SBC experience.

Responsibilities

• Provide technical leadership and mentorship to engineers supporting emergency call center voice infrastructure.
• Administer, configure, and maintain Oracle Acme Packet SBCs and OCCAS.
• Design, implement, and optimize SIP routing, header manipulation, and normalization rules for multi-carrier interoperability.
• Develop and troubleshoot OCCAS SIP servlets and custom call control logic for emergency call handling.
• Manage and resolve daily bug, service, and project tickets while ensuring SLA compliance and documentation updates.
• Perform SIP signaling and media troubleshooting using Wireshark, sngrep, and Oracle diagnostic tools.
• Manage SBC clusters, firmware upgrades, capacity planning, and redundancy to ensure high availability.
• Oversee TLS/SRTP, certificate management, and SBC security configurations to maintain compliance and reliability.
• Collaborate with cross-functional teams; participate in 24/7 on-call rotation and incident root-cause analysis.

Skills

VoIP/SIP network engineering

SIP header manipulation

Incident and project ticket management

Documentation and communication

Scripting/automation (Python, Bash)

Education

Bachelor’s degree in Computer Science or related field

Tools

Oracle SBC

OCCAS

OCCAS SIP servlets

Wireshark

sngrep

Job description

SiriusXM is seeking a Senior SBC Engineer to ensure stability, security, and high availability of voice infrastructure in a mission-critical call center environment supporting emergency calls.

You will lead design, configuration, and operation of Oracle SBCs and OCCAS, oversee incident tickets, and drive solutions for reliable SIP-based voice services essential to public safety communications.