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System Engineer (UNIX specialised)

FREQUENTIS Solutions & Services s. r. o.

Information about the position

  • Place of work: Karadžičova, Bratislava
  • Basic wage component (gross) and other rewards: 2 500 EUR/monthMinimum 2 500 EUR brutto + bonuses. Freelancer´s hourly rate upon agreement. The final basic wage component will be adjusted to individual skills and experience of selected candidate.
  • Contract type: full-time, trade licence

Job description, responsibilities and duties

Would you like to create exciting technology and work with people that really care about you?

Bratislava-based FREQUENTIS Solutions & Services belongs to the Austrian FREQUENTIS group (, specialized in mission-critical communication and IT solutions, e.g. in air traffic control, public safety or defense.
Join our Mission Embedded team and help us make our solutions even more reliable. Work for an international technological leader and enjoy the benefits of flexible working arrangements and our focus on a good work-life balance.

Who We Are Looking For:

A Customer Service Engineers who would be responsible for the technical implementation of our services and the associated quality assurance measures during the service period.

Your Main Responsibilities:

• Responding to technical enquiries in all service aspects (incident and problem reports, technical issues ...) within the contractually agreed response times. First point of contact for customers with regard to all technical service issues during system lifecycles.
• Documentation and analysis of reported incidents and problems
• Coordinating and carrying out root cause analyses and remedies
• Assisting our customers with their technical queries about the operation, configuration and service of the serviced system.
• Designing, planning and technically executing changes and extensions to existing systems (change requests).
• Integrating systems and system components into existing system environments
• Performing system audits
• Collaborating with Product Management on designing and extending/improving products.
• Supporting Product Management with continuous product improvement based on experience gained / feedback from customers.
• Support transition of delivery project to support phase as well as building up required know how to support handed over solutions.
• Drafting/updating technical documentation on systems and their interfaces
• Performing system tests in Vienna and on customers’ premises
• Site acceptance with customers
• Coordinating with product development teams and/or development teams on error analysis and troubleshooting.

Know how & experience

• Very good English skills (written and spoken)
• Educational background in technology/IT
• Administration competence in the following areas:
- Linux Administrator Knowledge
- Linux Scripting (Bash, Perl)
- Windows Server Basics
- Windows Client Basics
- Software Deployment Systems (automatic application deployment using Ansible)
- Databases (PostgreSQL)
• VoIP (SIP, RTP) – previous experience is a must
• Wireshark
• Network (Network administration, CISCO configuration)
• Virtualising IT Systems (VMWare, ESXi)
• Network and system monitoring (Zabbix)
• Basic knowledge of telecommunications (interfaces: analog, ISDN, PCM technology) - optional
• Basic knowledge in GSM-R - optional

Qualifications (advantageous)

• VMware VCA or equivalent experience
• Cisco CCNA or equivalent experience in administrating critical network infrastructure mainly in relation to usage of VoIP
• Debian/Red Hat Certified Systems Administrator (RHCSA) or equivalent experience


• Accept internal and external deliveries
• Decision-making competence with regard to technical measures and procedures to remedy reported incidents and problems in the scope of the agreement
• Release new software updates for implementation in live systems.
• Define the severity level and priority of system errors and observations. Prioritize customer enquiries according to the contractual specifications and decide on necessary escalation.


• Successfully implementing technical measures to remedy problems reported on systems in operation.
• Ensure SLAs are enacted within the framework conditions.
• Analyse and remedy (or coordinate remedy) all technical system errors.
• Document all completed tasks in the ticket system.
• Escalate technical problems to Service Management.
• Participate in optimising operative customer systems to avoid incidences during operation.

Special skills & abilities

• Flexible availability
• Extremely well-organized
• Willingness to travel internationally (up to 30% of working time)
• Prepared to work on call (1week/month)
• Above average ability to work under pressure, strong commitment
• Analytical skills to localise errors and sources of errors in distributed systems
• Professional communication and client relationship skills, even during critical situations and under time pressure
• Precise and thorough documentation abilities.

Employee perks, benefits

• Training and development program (business and product trainings, budget 500 EUR for an individual language course)
• Flexible working hours, home office
• Employee Referral Program
• Refreshments, company & team events (breakfasts, Christmas party & presents, teambuildings)
• Meal vouchers fully reimbursed by the company.

Information about the selection process

We appreciate the time you took considering us as your future employer and applying for one of our job opportunities. Please mind that you may not be contacted at this stage due to the fact that only applicants meeting the criteria outlined above can be taken further into the selection process.

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

Language skills

English - Upper intermediate (B2)

Number of years of experience


Personality requirements and skills

• You are flexible, self-driven, dedicated, goal-oriented and structured in how you approach your work.
• You can integrate yourself into a larger cooperation, following corporate processes and recognizing constraints that may affect your work.
• You are proficient in spoken and written English. Knowledge of German or other European languages is an advantage.


Brief description of the company

Our Bratislava-based company FREQUENTIS Solutions & Services belongs to the Austrian group FREQUENIS AG (, specialized in safety-critical voice communications, for example for air traffic control towers, public safety control rooms (112) or air defense forces. Our mission critical solutions cover diverse areas, such as telephony and radio communication, Geographical Information Systems (GIS), incident and resource management, video surveillance and automatic video analytics.

In the last couple of years this business has evolved from hardware- to software-centric solutions and Frequentis has also increasingly provided mission-critical IT solutions beyond voice communication to our customers. We follow the Scrum methodology and our applications are mostly developed in Java to the highest quality standards.
From an engineering perspective we deploy state-of-the-art technologies and design patterns. Our solutions use JAVA and Microsoft .NET foundations, distributed architectures, low-latency telecommunications processing, real time web applications, integration platforms and high availability. Each of our solutions contains their own unique and challenging problems to solve.

For our customers, lives may be at stake and seconds count. Our products thus need to be developed to the highest standards when it comes to usability and reliability. Safety is what guides us from the first designs till the final tests of any of our product. If those are the kinds of challenges that excite you, then you have come to the right place!

Number of employees

50-99 employees

Company address

FREQUENTIS Solutions & Services s. r. o.
Karadžičova 8
821 08 Bratislava


Kontaktná osoba: Mgr. Viktória Manduchová
E-mail: poslať životopis