03/18/2026 updated

PK
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Web-app pentester (WASP, eWPTv2) | Cyber Security Professional (BTL1, ISC² CC, TCSE 2/3/4, CDFP)

Kladno, Czech Republic
Kladno, Czech Republic

Profile attachments

Peter_Kostanjevec_Resume_Blue.pdf

JavaScriptPHPPenetration TestingComputer SecurityComputer ProgrammingDatabasesData RecoveryDigital ForensicsPython (Programming Language)Linux AdministrationNetwork AdministrationNoSQLOpen Source TechnologyOpen Source IntelligenceRed Team (Cyber Security)Web Application SecuritySQL DatabasesWater QualityWeb ApplicationsCertified Cyber Forensics ProfessionalIT Security StandardsFirewalls (Computer Science)IT Security Solutions
  • Programming in Python, PHP, Javascript, ...
  • Data recovery
  • Databases (SQL and NoSQL) 
  • Digital forensics
  • Linux Administration
  • OSINT (Opensource Intelligence)
  • Web application pentesting / web application security
  • Cybersecurity
  • Firewalls & Network administration

Languages

GermanNative speakerEnglishFluentCzechBasic knowledge

Project history

Cyber Security Engineer

Deutsche Börse Group
Revalidation of firewall-rules, Upgrade Tufin Classic to Aurora, Scripting to automate tasks

Web app pentester

Self employed
  • Pentesting of websites and APIs
  • Code reviews

Web developer

Self-employed
2004 - 2018 | Various, EU-wide

Certificates

eWPT

Webapplication Pentester

2024

CDFE (Cert. digital forensics examiner)

Mile2

2021

CDFP (Cert. digital forensics professional)

INE

2021

WASP (Web application security professional)

Pentester Academy

2020

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