Senior DevOps / Voice Infrastructure Engineer

Responsibilities:
• Design, deploy, and maintain SIP/VoIP infrastructure (Asterisk, FreeSWITCH, Kamailio) for AI Agents;
• Integrate voice platforms with cloud services (GCP, AWS) and internal AI pipelines;
• Ensure high availability and low latency of voice services (HA, load balancing, failover);
• Manage cloud infrastructure via IaC (Terraform) and container orchestration in Kubernetes;
• Set up call quality monitoring (MOS, jitter, packet loss) and alerting with Grafana / Victoria Metrics;
• Build and optimize CI/CD pipelines (GitHub Actions, ArgoCD) for voice services;
• Harden voice infrastructure security: encryption (SRTP, TLS), toll fraud prevention, DoS protection;
• Integrate with PSTN/SIP trunk providers, manage DID numbers and call routing;

Requirements:
• 3+ years of hands-on experience with Asterisk or FreeSWITCH;
• Deep knowledge of SIP, RTP, SRTP protocols;
• Experience with SIP proxies — Kamailio or OpenSIPS;
• WebRTC integrations;
• Trunk configuration, dialplan design, codec negotiation;
• GCP and/or AWS hands-on experience (2+ years);
• Kubernetes (GKE or EKS) in production environments;
• Terraform — custom modules, multi-environment setups;
• Docker, Docker Compose;
• CI/CD: GitHub Actions, ArgoCD / Flux;
• Prometheus / Victoria Metrics, Grafana dashboards and alerting;
• Loki or ELK for log aggregation, voice quality metrics (QoS, MOS);
• Kafka or RabbitMQ, Redis, PostgreSQL, ClickHouse;
• English and Russian at B2 level, for communication with stakeholders and team;

Location:
any, except Russia and Belarus.