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Service Engineer - VoIP Applications

Defence
Bratislava FREQUENTIS Solutions & Services s.r.o. From now on Full time/Contractor
Job Introduction
FREQUENTIS Solutions & Services s. r. o., as a member of the Austrian Group FREQUENTIS AG, is focused on software development, system engineering and delivery of safety-critical voice communication and information systems. Our solutions are developed and distributed in the following business segments: Air Traffic Management & Defence (civil and military air traffic control, aeronautical information management), Public Safety (police, fire and rescue services, emergency medical services) and Public Transport & Maritime (railway and urban transport solutions, vessel traffic management).

Frequentis provides mission‑critical communication, information, and surveillance solutions that support military organisations in maintaining combat readiness and executing operations with high reliability. Its systems offer fully redundant, highly available communication frameworks, enabling secure inter‑service collaboration and shared situational awareness for faster and more accurate decision‑making in critical situations. Frequentis also delivers advanced voice communication systems, command‑and‑control solutions, and deployable air traffic control technologies tailored to defence environments.

Your Role

We are looking for a Voice Over IP Communications Service Engineer with knowledge from the Linux platform, who will act as a key contact for customers ensuring high system availability and service quality throughout the system lifecycle.

Join our team and help make our systems even more reliable and customer oriented. Work for an international technological leader and enjoy flexible working arrangements, professional growth opportunities, and a strong focus on work-life balance.
Key Tasks
Main Responsibilities​
  • Act as first point of contact for customer technical issues during service lifecycle, ensuring compliance with system requirements and quality standards
  • Handle incidents, problems, and service requests within agreed SLAs
  • Perform root cause analysis and implement corrective actions
  • Support system changes, upgrades, and maintenance activities
  • Monitor system performance and ensure availability
  • Maintain accurate documentation of incidents and solutions
  • Collaborate with delivery and product teams for issue resolution
Key Qualifications
Technical Skills & Competencies
  • Strong experience with Linux (RHEL), including troubleshooting and performance tuning
  • Experience with virtualization (VMware, KVM)
  • Understanding of networking, VoIP (SIP), SBC & PABX systems
  • Familiarity with automation (Ansible) and scripting (Bash)
  • Experience in system integration and customer-facing roles
  • Ability to work independently and lead technical topics
  • Strong troubleshooting skills in complex environments
  • Experience with monitoring tools (Zabbix) and service management (ITIL is a plus)

Skills considered as an advantage
  • Experience with Windows Server installation and maintenance
  • Experience with cloud platforms (AWS, Azure, etc.)
  • Experience with database system (MySQL, MSSQL, PostgreSQL, Oracle DBMS)

Requirements for the employee

Candidates with education suit the position
  • Secondary with school-leaving examination
  • University education (Bachelor's degree)
  • University education (Master's degree)

Educational Specialization - Information Technology, Telecommunications

Language skills English - Advanced (C1) and Slovak - Intermediate (B1)

Personality requirements and skills
  • Customer-oriented mindset with a focus on delivery excellence
  • Professional communication skills, even in critical situations
  • Willingness to undergo security clearance (NBÚ)
  • Willingness to participate in an on-call duty rotation
  • Strong professional communication and client‑relationship skills, including in critical situations and under time pressure
  • Flexible, self‑driven, goal‑oriented, and structured in your approach to work
  • Ability to follow corporate processes and standards
  • Comfortable working both on-site with customers and in the office (Vienna and Bratislava), balancing technical work with communication and coordination
  • Willingness to travel regularly to Vienna or to customer sites for installations, upgrades, and acceptance activities (typically planned, not ad-hoc)
Our Values
Around 3 600 employees are committed to creating a safer world with their innovative strength and technology orientation. Our culture is based on a working environment characterized by fairness and trust, mutual respect and appreciation. As an international company, we value this diversity and recruit regardless of age, gender, origin, ethnicity, sexual orientation or religion. We value fair and good working conditions, an optimum work-life-balance and offer all our employees equal development opportunities. In doing so, we focus on long-term working relationships in order to keep the valuable know-how of our employees stable.
Benefits

We offer an international and exciting work environment with manifold opportunities to grow both personally and professionally. Happiness and commitment of our employees is a key contributor to our success and we therefore put strong emphasis on our team spirit and a healthy work-life-balance. We are located in a modern office building with good public transportation connections, close to the city center of Bratislava.


Vertrauensarbeitszeit Betriebsrestaurant  Home Office  Smartphone Mentoring  Aus- und Weiterbildung  team and company events  employee referral program 
TRUST-BASED REFRESHMENTS HOME MODERN MENTORING TRAININGS
 TEAM & EMPLOYEE
WORKING HOURS AT WORK OFFICE IT-EQUIPMENT PROGRAM COMPANY EVENTS REFERRAL PROGRAM
Benefits

We offer an international and exciting work environment with manifold opportunities to grow both personally and professionally. Happiness and commitment of our employees is a key contributor to our success and we therefore put strong emphasis on our team spirit and a healthy work-life-balance. We are located in a modern office building with good public transportation connections, close to the city center of Bratislava.


Vertrauensarbeitszeit Betriebsrestaurant  Home Office  Smartphone Mentoring  Aus- und Weiterbildung  team and company events  employee referral program 
TRUST-BASED REFRESHMENTS HOME MODERN MENTORING TRAININGS
 TEAM & EMPLOYEE
WORKING HOURS AT WORK OFFICE IT-EQUIPMENT PROGRAM COMPANY EVENTS REFERRAL PROGRAM
Salary
Your individual salary is based on your professional experience and qualifications and is part of our attractive total package.
Apply now
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https://www.frequentis.com/karriere/hrprofils/images/Rispanova.jpg profile picture.

Sofia Viktória Rišpánová

Human Ressources | SofiaViktoria.RISPANOVA@frequentis.com | +421 (2) 32272 169 | Social media contact

Your potential deserves the right environment. At Frequentis, I’m here to guide you toward opportunities where your strengths can shine, and your future can grow.
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At Frequentis we don’t just create innovations,
we create a kind of wonder
to make the world a safer place.
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