Hello, I'm Andrejus S.
An experienced Senior SOC Security Analyst with over 20 years in cybersecurity, IT infrastructure, and network protection. He has worked across government institutions and leading cybersecurity companies, specializing in SIEM, IDS/IPS, vulnerability assessments, incident response, and industrial control system security. Andrejus holds a Master’s degree in Information and IT Security from Kaunas University of Technology and multiple international certifications including GIAC GCIH, ISA/IEC 62443 CFS, and OT Security Expert (OPSWAT). He is highly skilled in tools such as ArcSight, Kibana, Nessus, SentinelOne, and Hunters, and is fluent in English and Russian, with A2 German skills.
Details
- Location
- Years of Relevant Experience10-15 years
- Seniority LevelMid-Senior level
- Highest Level of EducationMasters
Current / Most Recent Job Title
2021 08 – 2025 03 Senior SOC Security Analyst Conducting 2nd- and 3rd-tier daily analysis of the current security situation on customer IT networks; investigating threats and reporting on IT security incidents. Participating in customer onboarding; train and supervise 1st and 2nd tier analysts; Creating and testing filters, rules, whitelists, breach detectors, and developing use cases. Jira analytics, integrations, dashboards and filters creation and optimizing. Big part of my job was use cases, rules, and detectors for the Siem creation Specific Practice: sr. SOC IT security analyst (IDS, SIEM, VAS, EDR, XDR) Environment: VMware, MS Windows, Linux Product/Tools: Kibana, RMC, Nessus; SentinelOne, Hunters, Jira, Confluence, Qradar, Snowflake
Current / Most Recent Employment
Axians, Basel, Switzerland Business or sector: cyber security services
Industry
Specific Jurisdictions That I'm Qualified In or Can Cover
Professional Membership / Certification
OT Security Expert OPSWAT Academy – Valid until October 2025 Claroty CyberSecurity Analyst (CCA 601) Claroty – Valid until September 2026 Purple AI Pre-Sales Applied Certification SentinelOne – Valid until June 2025 Hunters Certification: Technical Foundations Hunters – Valid until June 2030 ISA/IEC 62443 Cybersecurity Fundamentals Specialist (CFS) International Society of Automation (ISA) – Valid until May 2026 GIAC Certified Incident Handler (GCIH) Global Information Assurance Certification (GIAC) – Valid until August 2027 Analyst Number: 46304 Tenable.sc Scanning and Analysis Certification Tenable.io University – Awarded June 2020 Tenable.io Sensor Deployment Certification Tenable.io University – Awarded June 2020 Microsoft Certified Professional (MCP) Microsoft (Exams: 070-215; 070-224; 070-270) – No expiration date MCP ID: 2864907 ITIL Foundation Certificate EXIN – No expiration date Certificate ID: 4422068.1048294 / 00103449 GateProtect Certified Security Professional Rohde & Schwarz Cybersecurity GmbH (formerly GateProtect) – No expiration date
Skills
Cybersecurity & IT Security: -SOC Operations (Tier 2 and Tier 3 analysis) -SIEM management and optimization (ArcSight ESM, OSSIM, RAIN SIEM, Kibana, Qradar) -Threat detection, investigation, and incident response -Vulnerability Assessment and Management (VAS) -Penetration testing and security auditing -IDS/IPS management and tuning (SNORT, FireEye, SentinelOne, Hunters) -Industrial Control Systems (ICS) security analysis Networking & Infrastructure -Network security monitoring (IDS, IPS, Firewall, VPN, DNS, DHCP) -LAN/WAN infrastructure planning and management -VMware virtualization environments -Microsoft Active Directory, Windows Server (2003–2019) -UNIX/Linux system administration (RedHat, Ubuntu, FreeBSD) Tools and Technologies -ArcSight ESM, AlienVault OSSIM, RAIN SIEM, Kibana -Nessus, Tenable.io, SentinelOne, Hunters, Snowflake -Jira, Confluence (project management, dashboards, analytics) -Standards and Methodologies -Security frameworks: ISO 27001, NIST, OWASP -ITIL principles and risk assessment methodologies -Electronic document management and data protection regulations (GDPR-related) Languages -English – Fluent (C1) -Russian – Fluent (C2) -German – Basic (A2) Soft Skills -Excellent communication and presentation skills -Strong analytical and structured problem-solving approach -Leadership and project management experience -Customer-oriented and team collaboration skills
Areas of Professional Interest
Cyber security