VoIP Operations Engineer (Mid-Level)

VoIP Operations Engineer: We 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. Experience: 2+ Years Hands-on VoIP/Telecom/Voice Infrastructure experience, production exposure to FreeSWITCH and/or Kamailio and operating real-time systems in Linux environments Location: Remote working EST hours Type: Full -time Reports to: Operations Lead Team: Voice Infrastructure/Operations Core Technical Requirements (Hands-On) VoIP & Telecom - You should be comfortable independently debugging: FreeSWITCH Dialplans, gateways,SIP profiles Codec negotiation, NAT handling Log analysis and call failure diagnosis Kamailio SIP routing logic Dispatcher/load balancing Acting as a SIP proxy in front of media servers SIP Signaling Full call flows (INVITE→BYE) Re-INVITEs, CANCELs, SIP error handling (4xx/5xx) SIP Tracing sngrep, ngrep, packet captures, HOMER Correlating multi-leg calls and Call-IDs RTP & media RTP negotiation and flow SDP analysis, codec mismatches One-way/no-audio troubleshooting Telco layer Origination vs termination DIDs, carriers, SBCs, SIP interconnects Voice KPIs (ASR, ACD, PDD, MOS) Networking Comfortable with wireshark Able to find and identify network issues Infrastructure, Automation and Reliability Cloud & Automation AWS: EC2, security groups, basic VPC/networking Terraform: modify and maintain existing modules Ansible: configuration management and provisioning Containers and Delivery Docker: containerized services networking, volumes CI/CD: GitHub Actions, GitLab CI or similar (build→deploy→rollback understanding) Observability & Capacity Monitoring & Alerting Prometheus, Grafana, CloudWatch, or equivalents Responding to alerts and troubleshooting in real time Infrastructure dimensioning CPU, memory, disk, network sizing Capacity planning for growth and peak traffic Configuration Management Deep 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 skills Reading and analyzing logs Network and system-level troubleshooting Comfortable operating on production systems Automation and Scripting: Proficiency in at least one common scripting language ( Python , Bash ) for automating repetitive tasks, analyzing data, and performing system-level operations. Responsibilities Operate and support a live VoIP platform R espond to alerts and troubleshoot incidents Debug SIP/RTP issues and call quality problems Participate in a light on-call rotation Work with carriers and vendors during incidents Improve monitoring, alerting and automation Support account executives with clear technical explanations Contribute to scaling and architecture decisions Identify cost-saving opportunities based on resource utilization On-Call Expectations Participation in a light, shared on-call rotation A lerts are infrequent and actionable Focused on: call failures, Media RTP issues, carrier connectivity, initial triage, troubleshooting and escalation, no constant paging and no noisy or consumer-scale alerting We run real-time systems, so on-call exists, but it is intentionally kept sane, meaningful and sustainable. Cross-Team & Customer Support Responsibilities Work closely with Account Executives during incidents or escalations Clearly determine and explain the following: When an issue is on our side When it is carrier side When it is external or customer-side Provide evidence-based explanations: SIP traces, logs, metrics Must enable AEs to communicate accurately and confidently with customers. Communication & Collaboration (Very Important) Strong written and verbal communication skills Ability to explain complex technical issues clearly and calmly Comfortable presenting conclusions backed by data Understands the difference between: facts, assumptions and hypotheses Clear and professional communication during incidents Nice to Have Homer/HEP Redis or message queues Bash or Python scripting STIR/SHAKEN, fraud detection or call analytics Strong proficiency in Python for systems automation, tooling and data analysis Advanced Bash/Shell scripting skills for routine operations and troubleshooting