freiberufler Open Source Specialist. IT-Security Expert. Consultant. auf freelance.de

Open Source Specialist. IT-Security Expert. Consultant.

online
  • 100‐200€/Stunde
  • 80807 München
  • auf Anfrage
  • de  |  en
  • 10.12.2025
  • Contract ready

Kurzvorstellung

Individuelle Lösungen für IT-Security, Splunk, Linux & Open Source. Trainer für Mitarbeiter-Sensibilisierung, Open Source und IT-Security. Migration auf Open Source Lösungen.
Vollständiges Profil inkl. Projekten etc. gerne auf Anfrage!

Geschäftsdaten

 Freiberuflich
 Berufshaftpflichtversicherung aktiv

Qualifikationen

  • Android Developer
  • Ansible
  • Firewalls
  • IT-Sicherheitsberater
  • IT Sicherheit (allg.)
  • Linux-Systemadministrator
  • Palo Alto
  • Red Hat Enterprise Linux (RHEL)
  • Splunk
  • VPN

Über mich

** Vollständiges Profil inkl. Projekten etc. gerne auf Anfrage! **

Practical experience in IT-Security, Enterprise Linux & Open Source since 2002
Design & development of solution oriented concepts fitting to your company
Expert level knowledge:

◦ Ansible Automation
◦ Splunk> visualization of machine data (infrastructure, design, apps, usecases)
◦ Enterprise Linux & Enterprise Open Source solutions
◦ Palo Alto Next Generation Firewalling
◦ ivanti Connect Secure (PulseSecure, Juniper SA) / Secure Remote Access
◦ Android OS development (no APP development)
◦ Individual perfect fitting solutions for complex IT challenges
Unique knowledge in Availability Monitoring (Nagios/checkmk/splunk>)
Migration to „Enterprise-Ready“ - Open Source solutions in consideration of operating and economic aspects
Trainer for Splunk>, Ansible, Open Source and IT-Security solutions
Languages: German (first language), Englisch (business fluent)

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Qualifications And Certifications
- Palo Alto Certified Network Security Engineer (PCNSE)
- Splunk Core Certified Consultant (includes: Splunk Core Certified User, Splunk Core Certified Power User, Splunk Enterprise Certified Admin, Splunk Enterprise Certified Architect)
- Palo Alto Accredited Configuration Engineer (ACE)
- Linux Certified Professional (LPIC-2)
- Ubuntu Certified Professional (UCP)
- Linux Certified Professional (LPIC-1)
- Bluecoat Certified Proxy Administrator (BCPA)
- Bluecoat Certified Proxy Professional (BCPP)
- Phion Security Engineer (PHSE)

Skills (Hardware)
- Palo Alto Next Generation Firewall
- Switches, Router (Cisco, HP, Juniper, Linksys, …)
- Juniper (fka Netscreen) Firewalls
- Sophos (fka Astaro) Security Gateway
- Barracuda (fka Phion) Firewall
- ivanti Connect Secure (fka Pulse Connect Secure) Secure Remote Access
- Symantec Web Gateway (Blue Coat) Proxy-Lösungen
- Safenet (fka Aladdin) Token Management

Skills (Operating Systems)
- RedHat Enterprise Linux (RHEL), CentOS, AlmaLinux
- Debian & Ubuntu (Server, Desktop)
- SuSE Linux Enterprise (SLES), openSUSE
- Arch Linux (Server, Desktop, development, building)
- Windows Servers + Clients
- Android OpenSource Project (AOSP) and its derivatives (LineageOS, GrapheneOS, ...)

Skills (Programming)
- Ansible automation (expert knowledge)
- Linux automation / Bash (expert knowledge)
- Python (good knowledge)
- Windows automation / cmd, batch (expert knowledge)
- PHP, Perl, C / C++, Java (basic knowledge)
- Ability to read & extend code for any non-mentioned code language (see „Soft Skills“)

Skills (Databases)
- MySQL

Skills (Applications & Tools)
- Ansible automation in complex environments (incl. Semaphore and AWX/Tower)
- Deep FAI (Fully Automated Installation) knowledge
- Splunk> - machine data (infrastructure, operation, onboarding, analyzing, monitoring, visuali-
sization)
- GIT automation, CI/CD pipelining
- Android OS building and development
- Enterprise Linux + Open Source applications (checkmk, OTRS, nginx, Apache, Nagios,
Icinga, Wikis, ...)
- Private Cloud solution with Open Source tools (e.g. Nextcloud)
- Server & Desktop Malware Protection (Sophos, McAfee, Kaspersky, Trend Micro, ESET, Avast)
- Product management- & developer tools (Eclipse, GIT, Redmine, ...)
- Network analytic tools (Wireshark, tcpdump, ...)
- Log data analytic tools (Apache, Jasper Reports, splunk>, ...)
- Virtualization (VMware vSphere, KVM, LXC/D, docker, VirtualBox, Proxmox VE)
- Enterprise Windows applications (Active Directory, LDAP, DNS/DHCP, ...)
- Monitoring (Nagios, Icinga, Centreon, op5, splunk>)
- Linux Terminalserver solutions, Thin Computing / Thin Clients
- Reporting & Analyzing with Jasper Reports and/or Splunk>
- Open-AudIT (network & devices documentation)
- JIRA Server (administration, permissions, workflows,..)

Persönliche Daten

Sprache
  • Deutsch (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
auf Anfrage
Arbeitserlaubnis
  • Europäische Union
  • Schweiz
Home-Office
bevorzugt
Profilaufrufe
4468
Berufserfahrung
23 Jahre und 4 Monate (seit 08/2002)
Projektleitung
10 Jahre

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