Certified IT Security Consultant & Pentester (OSCP) with many years of experience in planning, management and implementation of various web projects with in-depth knowledge of current and efficient key technologies.

git Linux Docker Open Source CI/CD Python DevOps Pentest Laravel PHP VueJS Javascript OSCP IT-Security IT-Consultant Project Management Source Code Audit

Professional Experience

Managing Director / IT Security Consultant / Developer

06/2018 - Today

Through Lednerb OÜ, which I founded in Estonia, I have an efficient and international opportunity to realize projects in the field of IT security for and with my customers.

My previous experiences and activities in a wide field of project management, IT security and web development enable me to participate in international projects of different sizes as a consultant, pentester or developer.

Senior Software Developer | SIWECOS

Within the SIWECOS project I supported the eco association as a leading software developer in technical project management, backend development, server infrastructure and documentation.

For the realization of one of the most extensive projects with many different components and several project partners I have decisively designed the following areas:

  • Planning, further development and documentation of the various APIs
  • Setup of a fully automated CI/CD process using GitHub, Travis CI and Docker images for all modules
  • Improvement of stability and performance thanks to server migration from a Google Cloud setup to a (dedicated) vServer environment; provisioning via Ansible
  • Presentation of the technical aspects at the Internet Security Days 2019

Managing Director / Web Developer / Server Administrator

Brendel & Reindl GbR
06/2014 - 07/2018

Together with my business partner, I have realized web projects of various sizes in the front- and back-end. The satisfaction and loyalty of our customers was an essential drive and a good measurement to judge the quality of the delivered work.

Through my varied activities as managing director, developer and administrator I have acquired extensive knowledge in the respective areas. Thanks to this experience, I am able to understand, manage and implement IT projects from different perspectives (customer, developer, designer, project manager).


11/2016 - 02/2017

The industrial internship in the context of my studies of IT security and information technology I absolved at Hackmanit and thus gained first professional insights into the work of a professional security company. I was particularly impressed by the open and collegial interaction among the partners and employees, who all have a remarkable expertise and are happy to pass this on.

During the internship I participated in a risk analysis and impact assessment and developed a security scanner for HTTP headers.

Project Manager

06/2013 - 09/2013

After a short training period, I was placed in great trust from the very beginning and was able to contribute my suggestions, arguments and previous experience to the company in a valuable way.

I was responsible for project management and quality assurance for a large number of projects and still remember my time at codingpeople with great pleasure and am grateful for the valuable experience I was able to gather in the company.

Web Developer / Web Designer

07/2010 - 06/2014

Already during my school time I have freelanced various smaller web projects for different customers, where I was responsible for conception, design and development.

In 2014 I founded the Brendel & Reindl GbR, in order to be able to realize larger projects as well.

Open Source Projects

As an active member of the worldwide open source community I regularly participate in the continuous development and bug fixing in various projects. Furthermore I am active as a maintainer of the following repositories:

Bilberry Hugo Theme Free Premium Theme for the Static Site Generator HUGO
Metadata-Attacker Tool for testing XSS vulnerabilities through metadata in multimedia files
SIWECOS Business Layer Application The heart of the SIWECOS project
SIWECOS Core-API Main module for the cooperation of 6 security scanners
poeditor2hugo Export of translations from POEditor into compatible files for HUGO themes
opentracker-docker Docker image for the opentracker project with over 300k pulls