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Senior Network Security Engineer

Network & Infrastructure Services
Bratislava FREQUENTIS Solutions & Services s.r.o. Full time/Contractor
Job Introduction
FREQUENTIS Solutions & Services (FSS) 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).

We are looking for an experienced Senior Security Engineer to strengthen our Network & Infrastructure Services (NIS) organization and help improve the security posture of our network environments. In this role, you will work closely with Information Security Officers and security teams to translate security requirements, compliance obligations, and audit findings into practical technical implementations across network infrastructure.

Join an international technology leader and contribute to protecting safety-critical systems while enjoying flexible working conditions and a strong work-life balance.
Key Tasks
  • Implement network security requirements defined by Information Security Officers and security teams
  • Apply security hardening measures across network infrastructure, including firewalls, routing, switching, and network segmentation
  • Translate compliance requirements and audit findings into technical configurations and operational improvements
  • Drive vulnerability remediation activities and support continuous security improvement initiatives
  • Reduce remediation lead times and support the timely resolution of identified security issues
  • Perform vulnerability remediation
  • Improve technical documentation, security evidence collection, and audit traceability
  • Act as a senior escalation point for network security-related topics
  • Contribute to strengthening security standards and operational practices across the organization
  • Collaborate with infrastructure, operations, and security teams to ensure compliance with internal and external security requirements
  • Support the implementation and maintenance of secure network environments
Key Qualifications
Technical Skills & Competencies
  • Experience in network engineering, including routing, switching, and firewall technologies
  • Strong understanding of network security principles and best practices
  • Experience with vulnerability management and remediation activities
  • Familiarity with compliance requirements, security standards, and audit processes
  • Ability to translate security and compliance requirements into practical technical solutions
  • Strong analytical and troubleshooting skills in network environments
  • Experience with technical documentation and audit-related activities
  • Ability to balance security requirements with operational and business needs
  • Experience with security hardening and implementation of security controls

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)

Personality requirements and skills
  • Strong sense of ownership and accountability for security-related topics
  • Structured and analytical approach to problem solving
  • Ability to prioritize remediation activities and security improvements effectively
  • Strong attention to detail and documentation quality
  • Ability to collaborate across multiple teams and stakeholders
  • Excellent communication skills across technical and non-technical audiences
  • Proactive mindset focused on continuous improvement
  • Ability to work independently while maintaining strong teamwork and cooperation
  • Commitment to maintaining high security standards in safety-critical environments
Our Values
Around 2,600 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
Monthly Gross Salary
EUR 4000
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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Sofia Viktória Rišpánová

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

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