Peter K.-Freelance cybersecurity engineer
Check rate
Experience
Freelance cybersecurity engineer
Deutsche Börse Group
- Migrating Tufin from Classic to Aurora, implementing Infoblox NIOS and migrating from Cisco PNR, and developing and automating multiple workflows for firewall rule management.
- Speeding up processes by automating tasks and report generation in Tufin and Infoblox NIOS, reducing the manpower needed to handle those tasks by at least 50%.
- Creating an integration between SAP CRM7, Tufin, and Infoblox for data synchronization and automated ticket creation, ensuring compliance requirements are handled automatically and reducing manual work.
- Supporting the CrowdStrike Falcon rollout.
- Developing an AI agent to help handle tickets by doing basic research and gathering information, reducing the workload for team members by 20-30%.
Professional expert for cybersecurity and web development
German association of professional experts (GAPE)
- Providing expert consulting and serving as a professional expert in civil cases.
Web application penetration tester / lead trainer
pentest-experts.com
- Finding vulnerabilities in websites, identifying dozens of high-risk vulnerabilities, and training developers in secure coding practices.
- Developing and delivering security awareness training for employees at mid-sized companies to help them recognize common cyber attacks such as phishing and social engineering, resulting in a noticeable reduction in risky user behavior.
- Reviewing source code and recommending cybersecurity changes, mitigating hundreds of exploitable security vulnerabilities.
Web developer / IT service technician
Various
- Planning and delivering various custom web projects cost-effectively for small and medium-sized companies.
- Installing and maintaining IT systems, firewalls, etc. for smaller companies.
- Helping companies migrate from Windows to Linux and other open-source software through consulting and training.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Professional Services, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Project Management.
Summary
Cybersecurity professional with experience using a wide range of tools. Working in IT since 2001 – quick to adapt to an ever-changing environment and learn new technologies.
Continuously seeking new knowledge, optimizing processes, and finding the best solution for every project. Very good at explaining complex technical topics in simple terms so they are clear and easy for everyone to understand.
Author of many IT books on hacking, IT forensics, and programming.
Skills
- Programming: Python, Php, Javascript
- Sql Databases: Mysql, Postgresql, Oracle
- Nosql Databases: Mongodb, Redis
- Linux (Debian, Rhel): System Administration
- It And Web Application Security: Blue Teaming
- Ethical Hacking (Pentesting): Owasp Top 10, Red Teaming
- It Forensics (Linux, Windows & Networks): Autopsy, Belkasoft X, Volatility, Velociraptor
- Network Administration: Firewalls, Ids/Ips, Etc.
- Open-Source Intelligence: Osint
- Threat Intelligence: Mitre Att&Ck Framework
- Siem: Splunk, Wazuh, Elastic Stack (Elk)
- Tufin Scripting / Automation: Securetrack, Securechange
- Infoblox Ddi: Administration, Wapi Api
- Devops / Devsecops: Docker & Kubernetes, Cloud (Azure, Gcp)
- Git, Github, Gitlab
- Ansible
- Terraform
- Ai Development / Security
Languages
Certifications & licenses
CDFE
Mile2
CWES
HTB
TCSE 2/3/4
Tufin
WASP
PA
eCDFP
INE
eCPPT
INE
eCTHP
INE
eCWPTX
INE
eMAPT
INE
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Peter is based in Kladno 1, Czech Republic and prefers 100% remote projects.
Peter speaks the following languages: German (Native), English (Advanced), Czech (Elementary).
Peter has at least 26 years of experience. During this time, Peter has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 7 years and 6 months. Note that Peter may not have shared all experience and actually has more experience.
Based on recent experience, Peter would be well-suited for roles such as: Freelance cybersecurity engineer, Professional expert for cybersecurity and web development, Web application penetration tester / lead trainer.
Peter's most recent position is Freelance cybersecurity engineer at Deutsche Börse Group.
In recent years, Peter has worked for Deutsche Börse Group, German association of professional experts (GAPE), and pentest-experts.com.
Peter is most experienced in industries like Information Technology, Professional Services, and Banking and Finance.
Peter is most experienced in business areas like Information Technology, Product Development, and Project Management.
Peter has recently worked in industries like Information Technology, Professional Services, and Banking and Finance.
Peter has recently worked in business areas like Information Technology.
Peter has 9 certificates. Among them, these include: CDFE, CWES, and TCSE 2/3/4.
Peter is immediately available full-time for suitable projects.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 6 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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