VoIP Operations EngineerWe are seeking a VoIP Operations Engineer with hands-on production experience to help operate and scale a carrier-grade voice platform. You will work directly with FreeSWITCH, Kamailio, SIP carriers and cloud infrastructure, owning troubleshooting, reliability and operational excellence.This role combines deep technical work, incident response and clear communication. You will be trusted not only to fix issues, but to explain them clearly and with evidence to internal teams.Experience2+ Years Hands-on VoIP/Telecom/Voice Infrastructure experience, production exposure to FreeSWITCH and/or Kamailio and operating real-time systems in Linux environmentsCore Technical Requirements (Hands-On)VoIP & Telecom - You should be comfortable independently debugging:FreeSWITCHDialplans, gateways, SIP profilesCodec negotiation, NAT handlingLog analysis and call failure diagnosisKamailioSIP routing logicDispatcher/load balancingActing as a SIP proxy in front of media serversSIP SignalingFull call flows (INVITE→BYE)Re-INVITEs, CANCELs, SIP error handling (4xx/5xx)SIP Tracingsngrep, ngrep, packet captures, HOMERCorrelating multi-leg calls and Call-IDsRTP & mediaRTP negotiation and flowSDP analysis, codec mismatchesOne-way/no-audio troubleshootingTelco layerOrigination vs terminationDIDs, carriers, SBCs, SIP interconnectsVoice KPIs (ASR, ACD, PDD, MOS)NetworkingComfortable with wiresharkAble to find and identify network issuesInfrastructure, Automation and ReliabilityCloud & AutomationAWS: EC2, security groups, basic VPC/networkingTerraform: modify and maintain existing modulesAnsible: configuration management and provisioningContainers and DeliveryDocker: containerized services networking, volumesCI/CD: GitHub Actions, GitLab CI or similar (build→deploy→rollback understanding)Observability & CapacityMonitoring & AlertingPrometheus, Grafana, CloudWatch, or equivalentsResponding to alerts and troubleshooting in real timeInfrastructure dimensioningCPU, memory, disk, network sizingCapacity planning for growth and peak trafficConfiguration ManagementDeep familiarity with configuration management tools (Ansible, Terraform) not only for infrastructure but also for service deployment and maintenance of core applications (e.g., FreeSWITCH, Kamailio, web servers like Apache/Nginx).Linux & Operations (Must be Very Comfortable)Strong Linux command-line skillsReading and analyzing logsNetwork and system-level troubleshootingComfortable operating on production systemsAutomation and Scripting: Proficiency in at least one common scripting language (Python, Bash) for automating repetitive tasks, analyzing data, and performing system-level operations.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 utilizationOn-Call ExpectationsParticipation in a light, shared on-call rotationAlerts are infrequent and actionableFocused on: call failures, Media RTP issues, carrier connectivity, initial triage, troubleshooting and escalation, no constant paging and no noisy or consumer-scale alertingWe run real-time systems, so on-call exists, but it is intentionally kept sane, meaningful and sustainable.Cross-Team & Customer Support ResponsibilitiesWork closely with Account Executives during incidents or escalationsClearly determine and explain the following:When an issue is on our sideWhen it is carrier sideWhen it is external or customer-sideProvide evidence-based explanations: SIP traces, logs, metricsMust enable AEs to communicate accurately and confidently with customers.Communication & Collaboration (Very Important)Strong 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 incidentsNice to HaveHomer/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 troubleshootingLocationRemote working EST hoursReports toOperations LeadTeamVoice Infrastructure/Operations
