[Remote] Sr. Network Operations VoIP Engineer (Platform & SRE)

Note: The job is a remote job and is open to candidates in USA. Bandwidth Inc. is a global software company that helps enterprises deliver exceptional experiences through voice, messaging, and emergency services. They are seeking a Senior VoIP Engineer to join their Network Operations team, focusing on ensuring reliable, secure, and automated SIP connectivity across multiple carrier platforms and enterprise environments.ResponsibilitiesDesign and implement automation to reduce operational burden, replacing manual workflows with scripting and Infrastructure as Code (IaC)Use tools like Ansible/AWX and Terraform to automate the provisioning and scaling of voice services and carrier interconnectsConduct detailed interoperability testing between carrier platforms and open-source SIP implementations (e.g., Kamailio, OpenSIPS), resolving signaling mismatches and codec issuesDesign and maintain SIP trunking solutions with multiple carriers to ensure reliability, compliance, and optimal routingAct as the highest-level escalation point for complex SIP/RTP problems. Use advanced tools like Wireshark, SIPp, and HEPIC/Homer to analyze call flows and media streamsCollaborate with network and security teams to integrate SIP services through proxy servers and modern routing policiesMaintain 'Documentation as Code,' including SIP call flow diagrams and interconnect standards, while providing guidance to junior staff on modern troubleshooting methodologiesSkills5+ years of hands-on VoIP engineering experience, with a heavy emphasis on carrier-grade SIP environmentsExpert-level knowledge of SIP signaling (INVITE, BYE, etc.), SDP negotiation, and RTP/RTCP3+ years of proficiency in Python, Bash, or Ansible for automating provisioning and troubleshooting workflowsExperience using IaC tools to manage infrastructure at scaleHands-on experience with open-source SIP proxies (e.g., Kamailio, OpenSIPS) alongside traditional SBCs (e.g., Ribbon, Oracle/Acme Packet)Strong Linux administration skills for VoIP application performance and system troubleshootingProficiency with diagnostic tools such as Wireshark, sngrep, and Homer/HEPDirect experience with carrier-to-carrier SIP interconnects and SS7-to-SIP interworkingExperience with ENUM, LNP, and complex routing logicFamiliarity with TLS, SRTP, and regulatory compliance including STIR/SHAKEN and E911Experience deploying voice services in containerized or cloud-native environmentsSolid knowledge of IP, DNS, and routing protocolsBenefits100% 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 (of any kind!) 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.Company OverviewBandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences. It was founded in 1999, and is headquartered in Raleigh, North Carolina, USA, with a workforce of 1001-5000 employees. Its website is http://www.bandwidth.com.Company H1B SponsorshipBandwidth Inc. has a track record of offering H1B sponsorships, with 6 in 2026, 11 in 2025, 5 in 2024, 13 in 2023, 13 in 2022, 14 in 2021, 6 in 2020. Please note that this does not guarantee sponsorship for this specific role.