This is a fully remote position, open to applicants in Poland.

• Manage, maintain, and enhance VoIP and Radius systems in high-performance data centers.

• Design and refine automated system management utilizing Puppet and Debian-based server clusters.

• Lead projects within the VoIP and Radius environment through their entire lifecycle — from design and implementation to deployment.

• Conduct performance assessments and optimizations to ensure system efficiency and reliability.

• Strategically plan and implement rollouts of new features and system updates.

• Perform regular maintenance tasks including system expansions, updates, and upgrades.

• Analyze, troubleshoot, and resolve technical issues methodically and with a focus on objectives.

• Collaborate with upstream providers by creating and overseeing trouble tickets.

• Engage in an on-call rotation (additional compensation is provided).

• A degree in Computer Science, Natural Sciences, or a related field.

• Multiple years of experience in IT operations (FOSS systems or Site Reliability Engineering).

• Proficient in Linux administration, particularly within clustered environments.

• Practical knowledge of ITIL processes (Incident, Problem, and Change Management).

• Strong comprehension of networking (TCP/IP, UDP).

• Scripting capabilities (Bash, Python, Perl) for automation purposes.

• Excellent analytical and troubleshooting abilities.

• Experience with virtualization technologies (e.g. KVM, Proxmox, oVirt, OpenStack) is a plus.

• Familiarity with VoIP technologies and telephony systems (e.g. Asterisk, Kamailio) is advantageous.

• Experience with FreeRADIUS is beneficial.

• Knowledge of MySQL / MariaDB administration.

• A proactive, service-oriented attitude and the ability to quickly grasp complex systems.

• Proficient English skills (both written and spoken); basic German is a plus.

• Competitive financial benefits: A cafeteria system that enables employees to customize their benefits by selecting from a range of options.

• Generous referral bonuses of up to PLN6,000 for referring specialists.

• Additional revenue sharing opportunities for establishing partnerships with new clients.

• Professional growth and team support: Continuous guidance from a dedicated Team Manager for each employee.

• Customized technical mentoring from a designated technical leader, based on individual expertise and project requirements.

• Community and Well-Being: A dedicated team-building budget for both online and on-site team events.

• Opportunities to engage in charitable initiatives and local sports programs.

• A supportive and inclusive work culture that prioritizes diversity and mutual respect.

System Engineer / Site Reliability Engineer

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