DevOps Engineer

Key Responsibilities

• Integrate with SIP/VoIP providers: configure SIP trunking, channel provisioning, carrier-grade SIP-level integration.
• Deploy and manage VoIP platforms (Asterisk, Kamailio) and media relays (RTPengine); FreeSWITCH experience is a plus.
• Terminate and manage media flows in company data centers, supporting AI-based voice processing.
• Configure networking for call routing and NAT traversal in data center and client environments.
• Handle Linux server administration, containerization, patching, and automation.
• Diagnose and debug real-time media issues using tools like Wireshark, sngrep, tcpdump.
• Architect call routes, dial plans, load balancing, failover strategies across deployments.
• Collaborate with engineering teams to integrate with platforms like Twilio and Genesys.
• Document systems, network designs, call flows, deployment SOPs.
• Travel to client on-site locations to perform installations, network setups, and hands-on support.

Requirements & Tech Stack

• Strong expertise with Asterisk: dial plans, ARI, AMI, voice codecs, IVR logic.
• Proficient in Kamailio: NAT handling, registrar, dispatcher and SIP proxy logic.
• Experience configuring RTPengine for media relay and NAT traversal.
• Deep understanding of SIP protocol, SDP negotiation, RTP, call flows and signaling.
• Advanced computer networking: NAT, STUN/TURN, routing, subnetting, packet filtering, firewalls, load balancing.
• Experience integrating with SIP providers (DID/toll-free channels through Twilio/Genesys or others).
• Strong Linux administration: Debian/Ubuntu/CentOS/RHEL; scripting (bash, python) for automation; monitoring.
• Hands-on debugging experience with SIP/RTP diagnostics and trace tools.
• Experience with SIP load testing using tools like SIPp.
• Creation and management of observability dashboards using Prometheus and Grafana.

Preferred/Bonus Skills

• Experience with FreeSWITCH deployments.
• Docker and containerized deployment experience to manage VoIP stacks and services.
• Exposure to cloud platforms (AWS, Azure, or GCP) for hybrid or scalable VoIP deployments.
• Understanding of VoIP security (TLS, SRTP), SBC configuration, and QoS implementation.
• Experience with SBCs and secure SIP peering.
• Familiarity with traffic shaping, jitter buffering and SIP analytics platforms like Homer/SIPCAPTURE.
• REST API integration for Twilio, Genesys, or other CPaaS systems.
• Basic knowledge of databases like PostgreSQL or MongoDB.
• Version control with Git and basic CI/CD automation tools.
• Experience with Dialer or Call Center software such as Cisco or Genesys.
• Experience configuring agent desktops over CTI integrations.

Qualifications

• Excellent verbal and written communication skills for interacting with clients and cross-functional teams.
• Proactive, detail-oriented mindset with strong problem-solving and analytical skills.
• Ability to manage client expectations, lead on-site technical discussions, and produce clear documentation.
• Team player comfortable working in fast-paced engineering culture.