Security Researcher · Penetration Tester

Kilian

Berlin, Germany · Open to work

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01

About

$ ~/whoami

I'm Kilian.
Security Researcher
& Penetration Tester.

I find the gaps that others miss — in networks, in applications, in assumptions. Three years of offensive security work across enterprise networks, Active Directory environments, and web applications.

Based in Germany. Working globally. Currently open to new engagements and full-time roles.

Get in touch View Projects & Writeups
SUBJECT_FILE
LocationGermany
FocusOffensive Security
HTB RankPro Hacker
LanguagesDE, EN
StatusOpen to work
3+Years experience
847+Vulns found
15+HTB machines
OSCPCertified
02

Work experience

2024 — Present Active

Penetration Tester

NOW

Company Name · Berlin, DE

  • Internal and external penetration tests for enterprise clients across finance and healthcare.
  • Active Directory assessments — privilege escalation, lateral movement, domain compromise chains.
  • Technical and executive-level reports with prioritised remediation guidance.
Active DirectoryWeb App Testing Burp SuiteReport Writing
2022 — 2024

IT Security Analyst

Company Name · Remote

  • SIEM monitoring and incident triage — MTTR reduced 35% via Python automation.
  • Managed vulnerability program across 200+ assets from scan to remediation closure.
  • Developed internal tooling in Python to automate repetitive log analysis tasks.
SIEMIncident Response PythonVuln Management
2021 — 2022

IT Support / Junior Sysadmin

Company Name · Germany

  • Managed on-premise Windows Server infrastructure — AD, Group Policy, DNS.
  • L2 hardware and software support for 100+ users.
Windows ServerActive Directory Networking
03

Education

2018 — 2022

B.Sc. — Computer Science

University Name · City, Country

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Skills

// Offensive

  • Penetration Testing
  • Web Application Testing
  • Active Directory Attacks
  • Privilege Escalation
  • Exploit Development
  • Reverse Engineering

// Tools

  • Burp Suite
  • Metasploit
  • BloodHound · Impacket
  • Nmap · Gobuster
  • Ghidra · Wireshark
  • Kali Linux · Docker

// Languages

  • Python
  • Bash / PowerShell
  • C
  • JavaScript
  • SQL

// Platforms

  • Kali Linux
  • Windows Server
  • Docker
  • AWS (fundamentals)
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Certifications

OSCP
Offensive Security Certified Professional Offensive Security 2024
eJPT
eLearnSecurity Junior Penetration Tester INE Security 2023
CPTS
Certified Penetration Testing Specialist HackTheBox 2023
Sec+
CompTIA Security+ CompTIA 2022
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Projects & Writeups

// Projects

No.TitleSummaryTags
01 Example Tool A short description of the project Python · CLI
02 Another Project Something interesting built here Security · Tools
See all projects →

// Writeups

No.TypeTitleSummaryTags
See all writeups →
07

Let's work
together.

Available for penetration testing engagements, red team projects, security consulting, and full-time roles. I respond within 24 hours.