ENGINEERING
LEADERSHIP
Team leadership covering hiring, coaching from junior to senior and technical decisions. Goal-setting with
OKRs, Scrum and Kanban in practice, budget planning and building teams that work
well across locations.
Leadership · Agile · OKRs · Hiring
CLOUD &
INFRASTRUCTURE
Building and operating infrastructure that holds up. Docker and Kubernetes for
containerisation, KVM and Qemu for virtualisation, all on Linux.
Docker · Kubernetes · KVM · Qemu · Linux
AI INTEGRATION
& FULL-STACK
LLM and OpenAI integration running in production, not just proof of concept.
Automated voice bots, WebRTC pipelines and full-stack applications from
database to UI.
AI · OpenAI · WebRTC · VoIP
SECURITY &
INFRASTRUCTURE
Security-first mindset shaped by years in the CCC community. IAM with Keycloak,
firewall architecture, DNS, VPN, and cybersecurity strategy for cloud and
on-premises environments.
Keycloak · IAM · CCC · Linux · VPN
ONGOING
Confidential Client
2025 -
Web application for documenting, managing and reporting illegally placed outdoor advertisements. Captures photos, GPS coordinates and case metadata in the field, with filters, PDF/Excel export, CSV import and an interactive map. Role-based user management and a full audit log cover accountability across multiple branches. Currently expanding into advertising site inventory management with a direct interface to the Berlin state authority for permit applications.
Laravel · JS · MariaDBFreelance
COMPLETED
Hot or Not
2017
Android rating app built with Java and a Python/Jasonette backend, rendering server-side JSON as native OS elements. Published on Google Play.
Android · Java · Python
FIVE MONKEYS - CRM
2016-2020
Full office management system built from scratch for a Berlin Mixed Martial Arts studio. Covers customer CRM, course scheduling, contracts, payments and automated email and SMS communication. Includes detailed reporting, a Google Maps view of customer locations and a digital display for in-studio advertising. Role-based access ensures each staff member only sees what is relevant to their work.
PHP · jQuery UI · JavaScriptFreelance
Easy_EFL.sh
2013-2017
Rewrite of Easy_e17.sh for Enlightenment's move from SVN to Git. Automated the full checkout, compilation and installation of the EFL ecosystem across Linux, FreeBSD, macOS and SunOS, with four installation profiles (Basic, Full, Complete, Custom) covering EFL core, Enlightenment, 14 extra modules including the diskio module by morlenxus, applications like Terminology and Ephoto, and legacy E16. File-tracking for clean upgrades, per-user config, component skipping, ccache and multi-threading support, build notifications and post-install hooks. Co-developed with David 'onefang' Seikel and multiple community contributors. Licensed BSD.
Bash · Git · Linux
Enthrall_ETK
2006
C tool for recording a window's content to JPEG frames and encoding them as video via mencoder. Experimental.
C · Linux · Video
enthrall-etk-gui.jpg
PyMP
2006
Lightweight mplayer-based media player written in Python.
Python · Linux
Enlightenment / EFL
2005-2020
Active contributor to the Enlightenment window manager and EFL core libraries over more than a decade, listed in the official AUTHORS file. Work spans bug fixes and feature additions across mixer, task manager, window management, shelf, theming, and EFL internals such as file path handling and localization fallback. Also authored easy_e17.sh, a widely used build script for compiling Enlightenment DR17 from SVN.
C · EFL · Open Source
enlightenment-2007.jpgenlightenment-2013.jpg
Easy_e17.sh
2005-2013
Bash script that downloaded, compiled and installed Enlightenment DR17 and all EFL components from SVN in a single command. Included a file-tracking system for clean upgrades, per-user and global config support, selective component skipping and backup. Widely adopted across Ubuntu, Debian, Fedora and Arch Linux as the go-to way to run current E17 builds before an official release existed. Described in the community as "one of the best available" tools for E17 installation, and mentioned by name in a Linux Magazine E17 feature (05/2006) and a Linux User article (02/2007). Superseded by Easy_EFL.sh when Enlightenment moved from SVN to Git in 2012.
Bash · SVN · Linux
easy_e17-srcupdate.jpgeasy_e17-compiling.jpgeasy_e17-error.jpg
Lok-In.de
2005-2008
PHP website for a Berlin-based model train shop, covering catalogue and accessories.
PHP · HTML · CSSFreelance
GET-E.org
2005-2008
The main community hub for Enlightenment DR17 content from 2002 to 2008. Hosted themes, wallpapers, modules, screenshots and application packages for E17, all open for user submissions, alongside an IRC channel (#get-e on freenode). One of two major E17 theme repositories of that era alongside E17-Stuff.org, filling the gap before an official exchange existed. Closed 2008-07-20; content and contributors moved to the newly launched exchange.enlightenment.org.
HTML · PHP · CMS
get-e-startpage.jpgget-e-themes.jpgget-e-closing.jpgget-e.org archive
PFSecure
2001
User-friendly Perl front-end for IPTables firewall configuration.
Perl · Linux · Security
pfsecure-secure-mode.jpg
Technotower.net
2000-2001
At its peak, the largest German website for techno and electronic music MP3 downloads, built before the music industry had any answer to free digital distribution. Grew into a large community archive with two contribution models: some contributors had direct upload access, while others sent CD spindles by post to be ripped and uploaded, the only practical solution given dial-up-era bandwidth. Perl/CGI handled the file upload logic and site dynamics. Eventually shut down after escalating conflicts with rival sites. A genuine piece of early-internet history.
HTML · Perl · CGI
technotower-startpage-ai-scaled-up.jpg
