[Remote] VoIP Operations Engineer (Mid-Level)

Note: The job is a remote job and is open to candidates in USA. Cuore Marketing is seeking a VoIP Operations Engineer to help operate and scale a carrier-grade voice platform. The role involves troubleshooting, incident response, and maintaining operational excellence while working with FreeSWITCH, Kamailio, and SIP carriers.ResponsibilitiesOperate and support a live VoIP platformRespond to alerts and troubleshoot incidentsDebug SIP/RTP issues and call quality problemsParticipate in a light on-call rotationWork with carriers and vendors during incidentsImprove monitoring, alerting and automationSupport account executives with clear technical explanationsContribute to scaling and architecture decisionsIdentify cost-saving opportunities based on resource utilizationSkills2+ Years Hands-on VoIP/Telecom/Voice Infrastructure experience, production exposure to FreeSWITCH and/or Kamailio and operating real-time systems in Linux environmentsComfortable independently debugging FreeSWITCH, including Dialplans, gateways, SIP profiles, Codec negotiation, NAT handling, Log analysis and call failure diagnosisComfortable independently debugging Kamailio, including SIP routing logic, Dispatcher/load balancing, Acting as a SIP proxy in front of media serversFull call flows (INVITE→BYE), Re-INVITEs, CANCELs, SIP error handling (4xx/5xx)SIP Tracing using sngrep, ngrep, packet captures, HOMER, Correlating multi-leg calls and Call-IDsRTP negotiation and flow, SDP analysis, codec mismatches, One-way/no-audio troubleshootingUnderstanding of Telco layer including Origination vs termination, DIDs, carriers, SBCs, SIP interconnects, Voice KPIs (ASR, ACD, PDD, MOS)Comfortable with wireshark and able to find and identify network issuesExperience with AWS: EC2, security groups, basic VPC/networkingExperience with Terraform: modify and maintain existing modulesExperience with Ansible: configuration management and provisioningExperience with Docker: containerized services networking, volumesExperience with CI/CD: GitHub Actions, GitLab CI or similarExperience with Prometheus, Grafana, CloudWatch, or equivalents for Monitoring & AlertingExperience with Infrastructure dimensioning including CPU, memory, disk, network sizing, Capacity planning for growth and peak trafficDeep familiarity with configuration management tools (Ansible, Terraform) for infrastructure and service deploymentStrong Linux command-line skillsReading and analyzing logsNetwork and system-level troubleshootingComfortable operating on production systemsProficiency in at least one common scripting language (Python, Bash) for automating repetitive tasks, analyzing data, and performing system-level operationsStrong written and verbal communication skillsAbility to explain complex technical issues clearly and calmlyComfortable presenting conclusions backed by dataUnderstands the difference between: facts, assumptions and hypothesesClear and professional communication during incidentsHomer/HEPRedis or message queuesBash or Python scriptingSTIR/SHAKEN, fraud detection or call analyticsStrong proficiency in Python for systems automation, tooling and data analysisAdvanced Bash/Shell scripting skills for routine operations and troubleshootingCompany OverviewOur singular focus and mission is to generate meaningful and incremental profits for your business. It was founded in 2010, and is headquartered in Richmond, Virginia, USA, with a workforce of 51-200 employees. Its website is https://www.cuoregroup.com.