Recommended expert

Rick Grassmann

Interim IT Security Analyst

Rick Grassmann
Munich, Germany

Experience

Jul 2023 - Jul 2025
2 years 1 month
Eschborn, Germany

Interim IT Security Analyst

GLS IT Services GmbH

  • Risk Management
  • Incident Management
  • Security Analysis
  • Secure Coding
  • Information Security Management System (ISMS)
Apr 2018 - Present
7 years 11 months
Munich, Germany

Cybersecurity Expert, Penetration Tester

mgm Security Partners & Rasotec GmbH

  • Penetration tests and security analyses: network infrastructure, Active Directory, cloud, Microsoft 365 (e.g. SharePoint), servers, OS (Linux and Windows), web applications (OWASP Top 10, XSS, SQLi), mobile apps
  • Identification and assessment of vulnerabilities
  • Creating final reports
  • Source code analyses: .NET, Java, Kotlin, Swift, JavaScript
  • Consulting on secure software development
  • Creation of threat models

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (8 years) and Professional Services (8 years).

Information Technology
Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (8 years) and Quality Assurance (8 years).

Information Technology
Quality Assurance

Skills

  • Networks: Communication Protocols And Network Architectures, Ipv4, Ipv6, Tcp, Udp, Routing, Firewalls, Dns, Tls, Vpn
  • Active Directory: Configuration And Access Rights Management, Ntlm, Kerberos, Smb, Rdp, Ldap, Group Policies
  • Web Applications: Web Application Architectures, Http, Single-page Applications, Rest Apis (Json), Html, Web Frameworks
  • It Security: Concepts, Guidelines, Standards, Isms, Owasp, Bsi Basic Protection, Mitre, Cve, Cvss, Cis Benchmarks
  • Secure Coding: Secure Development Of Web Applications, Password Policies, Login, Password Storage, Handling Sensitive Data, Multi-factor Authentication, Session Management, Measures Against Password Cracking, Measures Against Injection Attacks
  • Operating Systems: Linux And Windows, Extensive Knowledge Of Linux (Ubuntu, Arch, Red Hat, Debian, Kali, Etc.) And Windows
  • Programming: Go, Javascript, Java, .Net, Kotlin, Swift, Web Apps, Mobile Apps, Code Analysis
  • Programming: Python, Bash, Fish, Exploit Development
  • Databases: Mysql/mariadb, Sqlite, Postgresql, Oracle, Mssql, Etc., Web Apps, Exploits
  • Tools: Burp Suite, Zap, Nmap, Nessus, Impacket, Netexec, Metasploit, Etc., Extensive Experience With Pentesting Tools
  • Tools: Latex, Good Skills Using Latex To Create Pentest Reports
  • Cloud: Aws, Azure, Office 365, Entra, Iam, Sharepoint, Entra Id, Aws Lambda, Api Gateway, And Other Services

Languages

German
Native
English
Advanced

Education

Oct 2016 - Mar 2018

TU Kaiserslautern

Master of Science · Physics · Kaiserslautern, Germany

Oct 2012 - Jun 2016

TU Kaiserslautern

Bachelor of Science · Physics · Kaiserslautern, Germany

Sep 2004 - Jun 2012

Herzog-Johann-Gymnasium

Simmern, Germany

Certifications & licenses

OSCP Certificate, Offensive Security Certified Professional

Offensive Security

Profile

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Rick based?

Rick is based in Munich, Germany.

What languages does Rick speak?

Rick speaks the following languages: German (Native), English (Advanced).

How many years of experience does Rick have?

Rick has at least 8 years of experience. During this time, Rick has worked in at least 2 different roles and for 2 different companies. The average length of individual experience is 4 years and 11 months. Note that Rick may not have shared all experience and actually has more experience.

What roles would Rick be best suited for?

Based on recent experience, Rick would be well-suited for roles such as: Interim IT Security Analyst, Cybersecurity Expert, Penetration Tester.

What is Rick's latest experience?

Rick's most recent position is Interim IT Security Analyst at GLS IT Services GmbH.

What companies has Rick worked for in recent years?

In recent years, Rick has worked for GLS IT Services GmbH and mgm Security Partners & Rasotec GmbH.

Which industries is Rick most experienced in?

Rick is most experienced in industries like Information Technology (IT) and Professional Services.

Which business areas is Rick most experienced in?

Rick is most experienced in business areas like Information Technology (IT) and Quality Assurance (QA).

Which industries has Rick worked in recently?

Rick has recently worked in industries like Information Technology (IT) and Professional Services.

Which business areas has Rick worked in recently?

Rick has recently worked in business areas like Information Technology (IT) and Quality Assurance (QA).

What is Rick's education?

Rick holds a Master in Physics from TU Kaiserslautern and a Bachelor in Physics from TU Kaiserslautern.

Does Rick have any certificates?

Rick has 1 certificate: OSCP Certificate, Offensive Security Certified Professional.

What is the availability of Rick?

Rick is immediately available for suitable projects.

What is the rate of Rick?

Rick's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Rick?

To hire Rick, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1200
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Market avg: 860-1020 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.