Senior SIEM/SOC Engineer (m/f/d)
deutschetelekomitsolutionsslovakia
Košice, Košický kraj, Slovakia (Slovak Republic) · Košice · Slovakia
Posted Jun 2, 2026
- Full-time
- Remote
- OS GmbH
- Mid-Senior Level
deutschetelekomitsolutionsslovakia
Košice, Košický kraj, Slovakia (Slovak Republic) · Košice · Slovakia
Posted Jun 2, 2026
Company Description Our brand Deutsche Telekom IT Solutions Slovakia entered the life of Košice region in 2006 under the name of T-Systems Slovakia and ever since has been inextricably linked with the region when became one of the founding members of Košice IT Valley. We have managed to grow from scratch to the second largest employer in the eastern part of the country with more than 3900 employees. Our goal is to proactively find new ways to improve and continuously transform into the type of company providing innovative information and communication technology services. Join the team at Operational Services GmbH, within Deutsche Telekom Systems Solutions Slovakia, providing opportunities for IT infrastructure experts in Slovakia. OS is one of the leading ICT service providers in the German market and acts as a key driver of digitalization for medium-sized companies. With nearly 1,000 highly qualified specialists, OS designs, operates, and supports modern IT systems, ensures long-term service continuity, and maintains the availability of critical business processes. Job Description Development of use cases and detection rules. Assisting in the conception and design of detection strategies. Collaboration with the SOC for use case validation and acceptance. Refinement and optimization of existing detection rules. Creating dashboards and reports for customers or the internal SOC. Contributing to internal knowledge sharing and process development. Qualifications 2–5 years of professional experience in SIEM/SOC, IT security, or threat detection. Familiarity with frameworks like MITRE ATT&CK, Cyber Kill Chain, and IOC-based detection. Knowledge of log data analysis, attack detection, SIEM, or security monitoring. Proficiency in at least one scripting, query, or programming language (e.g., Python, PowerShell, KQL, Lucene). Ideally, experience in developing detection use cases in Elastic SIEM, Palo Alto XSIAM, or comparable systems. Analytical thinking and problem-solving skills. Self-organization and a disciplined approach to documentation. Very good written and spoken English skills German skills are a plus but not necessary Additional Information WHY SHOULD YOU CHOOSE US? We believe in balance between work and personal life. An attractive and extensive work-life balance portfolio guarantees lasting motivation for employees and thus a better quality of life, promotes physical and mental well-being and contributes to a positive work environment. All this with the aim of providing more freedom in reconciling work, career growth, private life and individual lifestyle. Therefore we offer to our employees over 25 different benefits to improve their personal and professional life in these areas: Financial benefits Benefits with focus on learning and development Benefits with focus on health and sport Benefits with focus on family and work – life balance Other benefits For more information about our benefits click to Benefits Salary Final salary is negotiable. We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than 1850€ /brutto. Additional information * Please be informed that our remote working possibility is only available within Slovakia due to European taxation regulation.