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Hrvoje KaticHK

Hrvoje Katic

Security Specialist

€300/day
Zagreb, HR
15+ years
CISSP
IAM
SIEM
IBM z/OS
IT-Security

Average response time: 1 hour

About Hrvoje

Digital and IT Services

  • Croatian

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Zagrebačka banka,
    z/OS system administrator
    January 1999 - Today (27 years and 5 months)
    Zagreb, Croatia
    • ● RACF administration (IAM)
    • ● Implementation and administration of zSecure Admin, Audit and Alert
    • ● Implementation of zSecure zVisual for HD/SD roles
    • ● POC and implementation of zMFA including Radius factor and Certificate factor
    • ● Implementation of Workload Manager for z/OS, Administration and Tuning
    • ● Implementation of Central Access Control System
    • ● Implementation of Cryptography in z/OS environment
    ◦ o Working with POC team in Hursley, UK
    ◦ o Developed Python modules to invoke z/OS ICSF PKCS#11 C-library functions
    ◦ o Built Python modules for application-level dataset encryption/decryption on z/OS
    • ● Administration of z/OS Sysplex
    • ● Administration of application servers IBM CICS and IBM WAS
    • ● Implementation and administration of USS, IP, FTPS, sFTP, OpenSSH on z/OS
    • ● Integration of z/OS systems with SIEM QRadar
    • ● Supporting projects like Card management, Cash management, Payments, CRM
    • ● Supporting PCI DSS audit
    • ● Periodical reporting – RMF, zSecure
    • ● Organizing and giving internal courses for colleagues and new trainees
    • ● Procedures and standards for z/OS security in organization
  • Zagrebacka banka
    IBM SIEM QRadar system administrator
    June 2019 - Today (7 years)
    • ● Maintenance of distributed SIEM QRadar environment
    • ● Complete integration of system infrastructure devices and servers with SIEM
    • ● Integration of applications
    • ● Reporting
    • ● QRadar RestAPI usage within python scripts
    • ● Writing custom parsers for applications (in RegEx)
    • ● Writing custom action scripts
    • ● Writing python scripts and programs
    • ● Custom rules creation for firing security offenses
    • ● Supporting Security Department in current projects
    • ● Supporting various audits
  • IBM SVG aka IBM
    administrator
    March 2023 - Today (3 years and 3 months)
    4 years in Certificate Management role
    • ● Coordinating and taking care of organizational certificate life cycle, external and internal
    • ● Issuing certificates, internal and external
    • ● Working with different certificate vendors such as Digicert, Actalis, Sectigo and Globalsign

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Education

  • Information Systems Security Professional (CISSP)
    ISC2
    Information Systems Security Professional (CISSP)
  • Cloud Security Knowledge v.5 (CCSK)
    Cloud Security Alliance
    Cloud Security Knowledge v.5 (CCSK)
Check out Hrvoje's education

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