Rafał Sierota

Experience

• 

  OrNet Sp. z o.o.

  Mar 2011 - May 2011

  Network Serviceman

  - structured cabling installation,- configuration of active network devices,- construction of base stations,- network measurements.

• 

  Mercus Software Sp. z o.o.

  Jun 2011 - Dec 2012

  IT Specialist

  - systems and server services control,- Windows Server 2003/2008 (Active Directory) administration,- implementation of new solutions,- efficiency and errors monitoring,- end-user technical support.

• 

  IBM

  Dec 2012 - now

  - monitoring and analyzing traffic and events/alerts and advising on remediation actions,- following standard operating procedures for detecting, classifying and reporting incidents,- analyzing data/logs from various network devices and operating systems,- performing OD function - coordinating the work of three SIEM teams,- holding the position of Shift Leader for six person team,- performing forensic analysis for troubleshooting,- escalating incidents according to the internal procedures,- supporting SIEM Security Correlation Engineers in creating customized QRadar rules,- playing an active role supporting continuous process improvement,- working in close collaboration with clients. Show less

  • Manager, X-Force Threat Management

    Apr 2016 - now

  • MSS SIEM Analyst

    Dec 2012 - Mar 2016