Senior Voice Operations Engineer

Job description

We are looking for a Senior Voice Operations Engineer with strong expertise in Linux infrastructure and VoIP technologies to join a Healthcare product.

You will manage and modernize a large distributed environment that supports telephony services, LAMP applications, Asterisk, FreePBX, and enterprise SIP phones.

RESPONSIBILITIES:

- Maintain, secure, and update a distributed Linux infrastructure and its voice services;

- Manage SIP phone provisioning, configurations, firmware, and certificates;

- Support SIP trunks, call routing, failover, caller ID, and carrier integrations;

- Automate fleet management, deployments, and recovery processes;

- Monitor production systems, investigate incidents, and eliminate recurring issues;

- Troubleshoot Asterisk, FreePBX, SIP, RTP, DTMF, NAT, routing, and audio problems.

REQUIREMENTS:

- Senior-level experience with Linux administration in distributed production environments;

- Strong production expertise with Asterisk, FreePBX, SIP, RTP, SDP, and IP telephony;

- Ability to analyze SIP messages, packet captures, dialplans, and end-to-end call flows;

- Solid knowledge of TCP/IP, UDP, DNS, DHCP, NAT, firewalls, VLANs, TLS, and Linux networking;

- Experience managing SIP phones, provisioning, firmware, carrier trunks, and number routing;

- Strong scripting skills in Bash, Python, or a similar language;

- Experience with Git, configuration management, monitoring, and incident response.

WILL BE PLUS:

- Experience with Yealink or similar enterprise SIP phones;

- Knowledge of Kamailio, OpenSIPS, FreeSWITCH, or session border controllers;

- Experience with Puppet or other fleet-management tools;

- Experience modernizing legacy Linux, LAMP, Asterisk, or FreePBX environments;

- Background in Healthcare or another security-sensitive domain.

MAIN BENEFITS:

- Flexible working hours;

- 25 paid days off and 10 sick/medical leaves;

- Additional paid days off for personal events;

- Maternity/Paternity leaves;

- Medical insurance;

- Self-development budget;

- Referral bonuses;

- Corporate events and gifts;

- Speaking Clubs;

- PE accounting and support.