Telecom Engineer II

Summary

IZT Cloud provides cloud-based voice, collaboration, and telecommunications services. The Telecom Engineer II will engineer and maintain the Cloud Voice platform by configuring and troubleshooting SIP, maintaining SBC infrastructure, managing number porting and PBX administration, and serving as a Tier 2 escalation point for support and development.

Responsibilities

• Contributing to a workplace culture consistent with IZT's mission, vision, and values
• Displaying strong interpersonal and communication skills leading to client satisfaction
• Configure and troubleshoot SIP trunks, endpoints, and carrier interconnects (registration, SDP/codec negotiation, NAT traversal, one-way audio, call quality)
• Maintain and monitor our SBC and voice infrastructure
• Manage LNP end to end: port-ins, port-outs, CSR/LOA validation, rejections, and carrier coordination with NPAC/SPID awareness
• Administer the Cloud Voice PBX platform: tenant provisioning, routing, features, and firmware
• Handle 10DLC campaign registration and messaging compliance (TCR, brand/campaign vetting, carrier surcharges)
• Serve as Tier 2 escalation: reproduce issues, capture SIP traces/PCAPs, and write clear, actionable escalations for the development team
• Support compliance operations: STIR/SHAKEN attestation, E911 provisioning, CNAM, and DNO list management
• Maintain accurate documentation of all engineering and support activities
• Providing on-call support as part of a scheduled rotation with other team members

Skills

• Self-motivated, able to make independent choices, free from immediate direction or supervision
• Strong SIP fundamentals: you can read a packet capture (Wireshark/sngrep) and pinpoint the failure
• Hands-on SBC experience and Linux comfort
• Working knowledge of LNP/porting workflows and carrier processes
• Familiarity with 10DLC/A2P messaging registration
• Strong written and verbal communication skills; your escalations make developers' jobs easier
• High School Diploma
• 3+ years in VoIP/telecom engineering or Tier 2 voice support
• FreeSWITCH, Kamailio, or OpenSIPS experience
• Yeastar P-Series (or similar multi-tenant PBX) administration
• STIR/SHAKEN, E911, or telecom regulatory exposure
• Scripting (Bash/Python) or API experience
• Ability to troubleshoot and resolve technical issues in a timely and efficient manner
• Time management skills to fully utilize your time
• Ability to work independently and as part of a team
• Higher Education Preferred
• VoIP/Telecom engineering: 3 years (Preferred)
• SIP troubleshooting (Wireshark/sngrep): 2 years (Preferred)
• SBC administration: 2 years (Preferred)
• English

Qualifications

Must Haves

• Self-motivated, able to make independent choices, free from immediate direction or supervision
• Strong SIP fundamentals: you can read a packet capture (Wireshark/sngrep) and pinpoint the failure
• Hands-on SBC experience and Linux comfort
• Working knowledge of LNP/porting workflows and carrier processes
• Familiarity with 10DLC/A2P messaging registration
• Strong written and verbal communication skills; your escalations make developers' jobs easier
• High School Diploma

Nice to Haves

• 3+ years in VoIP/telecom engineering or Tier 2 voice support
• FreeSWITCH, Kamailio, or OpenSIPS experience
• Yeastar P-Series (or similar multi-tenant PBX) administration
• STIR/SHAKEN, E911, or telecom regulatory exposure
• Scripting (Bash/Python) or API experience
• Ability to troubleshoot and resolve technical issues in a timely and efficient manner
• Time management skills to fully utilize your time
• Ability to work independently and as part of a team
• Higher Education Preferred
• VoIP/Telecom engineering: 3 years (Preferred)
• SIP troubleshooting (Wireshark/sngrep): 2 years (Preferred)
• SBC administration: 2 years (Preferred)
• English

Benefits

• Flexible PTO
• Flexible Hours
• Performance Bonus
• Career Development and Training
• Health and Wellness / Gym Reimbursement
• Comprehensive Health, Vision, Dental, and Life Insurance
• 401(k)
• Dental insurance
• Employee assistance program
• Flexible schedule
• Health insurance
• Life insurance
• Paid time off
• Professional development assistance
• Vision insurance
• Primarily office/hybrid work
• Bonus opportunities