Sr. Network Operations VoIP Engineer

What You’ll Do:

• Interoperability: Conduct detailed interoperability testing between carrier platforms, SBCs, servers, and soft switches; resolve SIP signaling mismatches and codec issues.
• Carrier Interconnects: Design, configure, and maintain SIP trunking solutions with multiple carriers; ensure reliability, compliance, and optimal call routing.
• Advanced Troubleshooting: Act as the highest-level escalation point for complex SIP and RTP problems, including one-way audio, call setup failures, and call feature failures.
• Diagnostics & Analysis: Use advanced troubleshooting tools (Wireshark/packet analysis, SIPp, HEPIC, Empirix, etc.) to capture and analyze SIP call flows and media streams.
• System Integration: Collaborate with network and security teams to integrate SIP services through network equipment, SIP proxy servers, and routing policies.
• Automation: Create automations to reduce operations burden, find ways to automate manual work via scripting, and identify operational inefficiencies.
• Vendor/Carrier
  
  Collaboration:
  
  Partner with internal teams, carriers, and service providers to validate solutions, perform escalations, and ensure SIP trunk functionality.
• Documentation: Create and maintain detailed documentation, including SIP call flow diagrams, carrier interconnect standards, and troubleshooting guides.
• Mentorship: Provide guidance and training to junior engineers and operations staff on SIP fundamentals and troubleshooting methodologies.

• 7+ years of hands‑on VoIP engineering experience, with a strong focus on carrier SIP trunking and interoperability.
• Expert‑level knowledge of SIP signaling (INVITE, BYE, REGISTER, re‑INVITE, UPDATE, PRACK, REFER, etc.), SDP negotiation, RTP/RTCP, and SIP headers.
• Proven ability to troubleshoot complex SIP interoperability issues across different carrier platforms and SBCs.
• Strong experience with Session Border Controllers (SBCs) and SIP proxies (e.g., Ribbon, Audio Codes, Oracle/Acme Packet, OpenSIPS, Kamailio, etc.).
• Proficiency with diagnostic tools:
  Wireshark, sngrep, Homer/HEP, SIPp, Empirix, etc.
• Solid networking knowledge: IP, DNS, subnetting, VLANs, routing protocols.
• Strong Linux administration skills for VoIP applications and troubleshooting.
• Excellent written and verbal communication skills.

• Direct experience with carrier VoIP platforms and carrier‑to‑carrier SIP interconnects.
• Experience with ENUM, number portability (LNP), routing databases and logic, and SS7‑to‑SIP interworking.
• Familiarity with SIP security (TLS, SRTP), and regulatory compliance (e.g., STIR/SHAKEN, E911, lawful intercept).
• Background in softswitch architecture and VoIP core platforms.
• Scripting/automation skills (Python, Bash, Ansible) for provisioning and troubleshooting workflows.
• Industry certifications in SIP, SBCs, or carrier VoIP technologies (SSCA®, Ribbon, Audio Codes, Oracle/Acme Packet, etc.).

• 100% company‑paid Medical, Vision, & Dental coverage for you and your family with low deductibles and low out‑of‑pocket expenses.
• All new hires receive four weeks of PTO.
• PTO Embargo. When you take time off you’re embargoed from working. Bandmates and managers are not allowed to interrupt your PTO – not even with email.
• Additional PTO can be earned throughout the year through volunteer hours and Bandwidth challenges.
• “Mahalo moments” program grants additional time off for life’s most important moments like graduations, buying a first home, getting married, wedding anniversaries (every five years), and the birth of a grandchild.
• 90‑Minute Workout Lunches and unlimited meetings with our very own nutritionist.