VoIP / Asterisk Engineer

Neo Group

Belgrade, Vojvodina, Serbia Hybrid permanent

Posted: February 10, 2026

Required Skills

Job Description

As part of our continued growth, Neo Group is recruiting on behalf of one of our local partners, leveraging our network of 1,400 talented professionals across 10+ countries. Together, we are committed to delivering innovative, data-driven solutions that empower our clients and foster professional growth within a dynamic and collaborative workplace.

We are on the lookout for a VoIP/Asterisk Engineer to join our Engineering Department.

Responsibilities:

• Deploy and configure Asterisk 18+ (22 preferred) for test and production environments;
• Set up and maintain XCally / Motion integrations with Asterisk core;
• Manage SIP / PJSIP trunks, routing logic, and IVR workflows;
• Configure channel-based stereo recording (agent left / customer right);
• Enable WebRTC connectivity (WSS/TLS, ICE, STUN/TURN);
• Integrate Asterisk via AMI / ARI and maintain CDR / CEL data pipelines;
• Troubleshoot call-flow, audio, and codec issues;
• Ensure security and monitoring using TLS, Fail2Ban, Prometheus, and Grafana.

Requirements:
• Solid experience with Asterisk 18+ (22 preferred);
• Strong understanding of SIP / PJSIP, RTP / SRTP, and NAT principles;
• Experience with XCally / Motion and FreePBX;
• Practical knowledge of Docker / Linux-based systems;
• Understanding of WebRTC signaling and browser endpoints;
• Familiarity with AMI / ARI APIs and CDR / CEL integration;
• Scripting skills in PHP / Bash;
• Strong VoIP troubleshooting background;
• Knowledge of VoIP billing, E.164 number formatting, and security practices.

Nice to Have:

• CRM / CSP integrations, WebRTC SDK (JS/TS), cloud environments (AWS, Hetzner, GCP)

Benefits:
• Recharge your batteries with 20 paid working vacation days annually to explore, relax, and rejuvenate.
• Kick off your birthday month with a bang! Not only do you get heartfelt birthday wishes from your team, but you also enjoy a fully-paid day off.
• Prioritize your health with compensation for wellness activities.
• Experience an international work environment with a passionate, motivated, and professional team.
• Foster camaraderie and celebrate achievements through engaging in corporate events throughout the year.

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