Daniel Winzen - Web Developer and Linux System Administrator

Q: Where is Daniel based?

Daniel is based in Aachen, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Daniel speak?

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

Q: How many years of experience does Daniel have?

Daniel has at least 10 years of experience. During this time, Daniel has worked in at least 4 different roles and for 2 different companies . The average length of individual experience is 3 years and 6 months . Note that Daniel may not have shared all experience and actually has more experience.

Q: What is Daniel's latest experience?

Daniel's most recent position is Web Developer and Linux System Administrator at Freelancer .

Q: What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for Freelancer and giftGRÜN GmbH .

Q: Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Retail and Information Technology (IT) .

Q: Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT) , Operations , and Product Development . Daniel also has some experience in Marketing and Sales .

Q: Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Retail and Information Technology (IT) .

Q: Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT) , Operations , and Product Development .

Recommended expert

Aachen, Germany

Experience

Jan 2021 - Present

5 years 2 months

Web Developer and Linux System Administrator

Freelancer

Consultation on setting up a web server with Apache2 and PHP FPM and an email server with Postfix and Dovecot for Learn4good Ltd.
Programmed website under-construction.bermudafunk.org in collaboration with a designer and client for bermuda.funk Freies Radio Rhein-Neckar e.V.
Consultation and network setup on-site including switches, routers, Wi-Fi, network monitoring, firewalls, and installation of sFirm banking software for The Swiss Quality Consulting GmbH
Consultation on website management and development, email migration from Outlook to cPanel, image optimization, and setting up Square payments for The JABA Group Ltd.
MS365 consultation, email setup, and document synchronization for PK reno GmbH
Development and integration of WooCommerce plugins, B2B shop setup, and custom shipping label export for Nurso GmbH
Minor changes implementation for existing Kirby system for Julia Rautenhaus
Analysis and fixing of WordPress website after broken updates for Alina Frey
Linux server hardening, updates, and throughput optimization for 3proxy servers for Lietparkas UAB
Malware removal from hacked WordPress website for Timo Horn
Cold email outreach system setup with Postfix and Dovecot and script development for Aman Ketebo
Customized Docker container creation based on AlmaLinux with ImageMagick 7 and consultation on Docker installation for Henry Hook
Plesk hosting environment management, code fixes, external supplier integration, and content support for First Class Corporation
Shopify theme customization, feature development, and payment integration consultation for Youro GmbH
Intel camera support on Ubuntu after upgrade for Making stories with a lesson
NginX configuration support on Windows Servers for a NodeJS application for ARMBRUSTER empiric it
Competitor email verification mechanism analysis for Casey Monaghan
Plugin development and API connector to Inswitch for freelance website payments for Mediaquotes
Private XMPP server setup on Raspberry Pi for Antonio Codespoti
WordPress website recovery after broken plugin update for A & R Tennis
Microsoft account and Office/Outlook migration support for Prof. Dr. Hanns-Ferdinand Müller
Customization and performance optimization of client websites for sk.design
VPN configuration and hacked server cleanup for Xisio Informationssysteme GmbH
PeerTube server setup and maintenance for Lupin Vondosky
Lightweight WordPress booking solution programming tailored to client needs for AP Online Marketing
Code refactoring, bug fixing, and business/technical consultation for RentAfrika
SellYourSaas setup and deployment infrastructure configuration for I-Motion SARL
Server, email, GitLab, project management, password management software, and VPNs setup and maintenance for Markus Sattler
Custom development for over 10 WordPress projects for TOGEMAXX media & webdesign
WooCommerce shop setup and FTP supplier product import development for SERVOMED GmbH
Open-source contributions to Whonix components, iptables to nftables migration, shutdown inhibition investigation, and IPv6 support addition for ENCRYPTED SUPPORT LP
Custom feature development, performance optimization, update management, email delivery support, plugin bug fixes, and translations for KU Europe GmbH
Custom plugin/theme development, server infrastructure management, support for 100+ WordPress websites, API connector development, deployment script setup, VPN configuration, DNS, email, and web hosting support for giftGRÜN GmbH
Server setup, web and email hosting migration, and website maintenance and development for Eisbaden.de
Custom WordPress and Shopify development for EcomPlus GmbH
Hacked website recovery and hosting migration for Be Brave gUG
Finalization of development tasks left incomplete by another developer for Medicare Consulting GmbH
Recovery of unbootable hacked server for SK-Software, Entwicklung & Beratung

Hobby projects:

Development and running of a web chat application
Development and running of an email service
Development and running of a darknet link list
Development and running of a darknet web hosting platform
Code contributions to open source projects such as LMMS, Audacity, and Ubuntu

Jan 2018 - Dec 2023

6 years

Web Developer

giftGRÜN GmbH

Jan 2017 - Dec 2018

2 years

Apprentice IT Specialist for Application Development

giftGRÜN GmbH

Jan 2016 - Dec 2017

2 years

Intern

giftGRÜN GmbH

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 Retail (8 years) and Information Technology (7 years).

Retail

Information Technology

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 (9 years), Operations (5 years), Product Development (5 years), Marketing (2 years), and Sales (2 years).

Information Technology

Operations

Product Development

Marketing

Sales

Summary

Since 2011 English-German translation of Open-Source Projects
Since 2012 Setup and maintain computers in personal environment
Since 2013 Developing and maintaining my own personal website with HTML, CSS, PHP and SQL
Since 2014 Supporting Open-Source Projects with code: Bugfixes, Optimizations and new features
Since 2016 Providing a free, anonymous email service
Since 2017 Development and providing a free, anonymous, Open-Source darknet web hosting platform

Skills

Ubuntu, Debian, Centos, Whonix, Other Linux Distros, Windows, Macos
Wordpress, Typo3, Kirby, Shopify
Woocommerce, Buddyboss, Buddypress, Ultimate Members, Import/export/sync With Other Systems, Rest-api Integraion, Templating, Shortcodes, Page Builder Blocks (Siteorigin, Wpbakery), Performance Optimization, Security
Composer, Jquery, Gulp, Bower, Nodejs, Npm, Gitlab Ci Deployment
Experience With Most Major Hosting Providers Like Ionos, Hetzner, Allinkl, Godaddy, Digitalocean, Namecheap, Strato, Raidboxes And More
Plesk, Whmcs
Apache2, Nginx, Mariadb, Mysql, Memcache, Redis, Php, Galera, Postgresql
Php, Sql, Javascript, Html, Css, C, C++, Bash, Perl, Python, Java
Postfix, Dovecot, Exim4, Rspamd, Clamav, Spamassassin, Dkim, Spf, Dmarc, Bimi, Pgp Encryption, Mail Piler, Mailcow
Bind9, Dnssec, Doh, Dot, Namerserver Migration
Aruba And Netgear Enterprise Switches, Qos, Vlan, Stp, Link Aggregation, Port Security, Access Points, Wifi Security, Unifi And Sophos Firewalls, Iptables, Nftables, Tls, Tcp, Udp, Ip, Ipv6, Wireguard, Openvpn, Tor, Hidden Services, I2p, Darknet, Hypanet, Ftp, Sftp, Http, Https, Http/1.0, Http/1.1, Http/2, Http/3
Git, Acme.sh, Let’s Encrypt, Raspberry Pi, Gitlab, Github, Ceph, Cryptocurrencies, Totp, Mattermost, Virtualbox, Libvirt, Virt-manager, Docker, Docker Compose, Gettext, Luks Disk Encryption, Vautwarden, Rsync, Lftp, Phpstorm, Vs Code, Codiumai, Curl, Postman, Openssl, Telnet, Ssh, Scp, Borg, Dracut, Nmap, Netstat, Apt, Dpkg
Drivers License Class Am/b/l

Languages

German

Native

English

Advanced

Education

Oct 2017 - Jun 2018

giftGRÜN GmbH

Apprenticeship · IT specialist for Application development · Aachen, Germany

Oct 2015 - Jun 2016

RWTH Aachen University

Computer Science · Aachen, Germany

Oct 2007 - Jun 2015

High school Anne-Frank-Gymnasiums Aachen

Aachen, Germany

...and 2 more

Certifications & licenses

Certified in Cybersecurity (CC)

Profile

Created

August 2025

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Frequently asked questions

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

Where is Daniel based?

Daniel is based in Aachen, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Daniel speak?

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

How many years of experience does Daniel have?

Daniel has at least 10 years of experience. During this time, Daniel has worked in at least 4 different roles and for 2 different companies. The average length of individual experience is 3 years and 6 months. Note that Daniel may not have shared all experience and actually has more experience.

What roles would Daniel be best suited for?

Based on recent experience, Daniel would be well-suited for roles such as: Web Developer and Linux System Administrator, Web Developer, Apprentice IT Specialist for Application Development.

What is Daniel's latest experience?

Daniel's most recent position is Web Developer and Linux System Administrator at Freelancer.

What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for Freelancer and giftGRÜN GmbH.

Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Retail and Information Technology (IT).

Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT), Operations, and Product Development. Daniel also has some experience in Marketing and Sales.

Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Retail and Information Technology (IT).

Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT), Operations, and Product Development.

What is Daniel's education?

Daniel attended giftGRÜN GmbH for IT specialist for Application development.

Does Daniel have any certificates?

Daniel has 1 certificate: Certified in Cybersecurity (CC).

What is the availability of Daniel?

Daniel is immediately available part-time for suitable projects.

What is the rate of Daniel?

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