Daniel W. - Freelancer in web development and linux system administration

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Aachen, Germany

Experience

Jan 2021 - Present

4 years 8 months

Freelancer in web development and linux system administration

Jan 2017 - Present

8 years 8 months

Development and providing a free, anonymous, Open-Source darknet web hosting platform

Jan 2016 - Present

9 years 8 months

Providing a free, anonymous email service

Jan 2016 - Dec 2023

8 years

Web developer, Apprenticeship for IT specialist for Application development, Internship

giftGRÜN GmbH

Custom plugin/theme development and Support for more than 100 WordPress websites
Management of server infrastructure and software updates
Support and know how transfer to other team members
Go-to person for any technical issues
DNS configuration
E-Mail hosting
Web hosting
Development of various API connectors for client specific internal applications
Cleanup of hacked sites
Setup of deployment scripts
Configure VPNs
Support for Linux and Mac users

Jan 2014 - Present

11 years 8 months

Supporting Open-Source Projects with code

Bugfixes
Optimizations
new features

Jan 2013 - Present

12 years 8 months

Developing and maintaining my own personal website

Developing and maintaining my own personal website with HTML, CSS, PHP and SQL.

Jan 2012 - Present

13 years 8 months

Setup and maintain computers in personal environment

Jan 2011 - Present

14 years 8 months

English-German translation of Open-Source Projects

Contributing code to open source projects

Contributing code to open source projects such as LMMS, Audacity, Ubuntu and many more.

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A & R Tennis

Fix WordPress website being offline after a broken plugin update.

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AP Online Marketing

Programming a custom lightweight WordPress booking solution tailored to the clients needs.

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Alina Frey

Analysed and fixed WordPress website after broken updates.

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Aman Ketebo

Support in setting up a cold email outreach system using postfix + dovecot
Consultation about email delivery issues
Development of scripts to simplify some tasks

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Antonio Codespoti

Support with setting up a private XMPP server on a raspberry pi.

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Armbruster Empiric IT

Support with nginx configuration on Windows Servers for a NodeJS application.

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Be Brave gUG

Recovery of hacked website and move web hosting.

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Casey Monaghan

Analyzed a competitors email verification mechanism.

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EcomPlus GmbH

Custom development for WordPress and Shopify.

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Eisbaden.de

Server setup
Move web+email hosting
Website maintenance and development

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Encrypted Support LP

OpenSource work related to Whonix: fix issues or add features in dracut, grml-debootstrap, flatpak and tor
Migrate iptables rules to nftables
Investigate shutdown inhibition in a python application
Add IPv6 support to Whonix

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First Class Corporation

Manage Plesk hosting environment
Fix poor-quality code left by another developer, improving performance and fixing bugs
Integrate an external service provider on another website
Assist with changing Facebook password and installing an app on an iPhone
Assist with adding and updating content on a WordPress website

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Henry Hook

Create a custom Docker container based on AlmaLinux with ImageMagick 7 and all image formats enabled.
Consult on installing Docker on an AlmaLinux host.

Develop and run Darknet web hosting

Hobby-Projects

Develop and run a Darknet link list

Hobby-Projects

Develop and run web chats

Hobby-Projects

Development and running an E-Mail Service

Hobby-Projects

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I-Motion SARL

Setup and configure SellYourSaas with master and deployment server infrastructure.

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Julia Rautenhaus

Implement minor changes in an existing Kirby system.

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KU Europe GmbH

Development of custom features for WordPress shops
Performance optimization
Update management
Support with email delivery issues
Fix bugs with plugins used
Add translations

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Learn4good Ltd.

Consultation on setting up a web server with Apache2 and PHP FPM and an email server with postfix+dovecot.

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Lietparkas UAB

Linux server hardening, installed updates and network throughput optimization for 3proxy servers.
Development to fix performance issues with 3proxy.

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Lupin Vondosky

Setup and maintain a peertube server for a client.

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Making stories with a lesson

Support with intel camera issue in Ubuntu after upgrade.

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Markus Sattler

Setup and maintain Servers with email, gitlab, project management and password management software and VPNs.

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Mediaquotes

Development and plugin configuration on several client websites
API connector to Inswitch for custom crypto token to be used for freelance website payments

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Medicare Consulting GmbH

Finalize development that another developer wasn’t finishing properly.

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Nurso GmbH

Setup Magnalista-Otto sync plugin in WooCommerce
Integrate Wayfair plugin, then re-programm as the bought plugin was full of bugs and not compatible
Setup an additional B2B shop
Manage website software updates, support and customization
Integrate wayfair provided shipping labels into custom coded export for local delivery company

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PK reno GmbH

Consultation and support on MS365
E-Mail setup and document synchronisation across computers

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Prof. Dr. Hanns-Ferdinand Müller

Support with switching over Microsoft accounts on a computer from a previous company to new company and personal account
Reinstall different versions of MS office and outlook

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RentAfrika

Refactor and simplify code
Correct programming mistakes
Consult on business and technical issues

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SK-Software, Entwicklung & Beratung

Recover unbootable hacked Server.

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Servomed GmbH

Setup new WooCommerce shop and development of product import from suppliers FTP server.

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The Jaba Group Ltd

Consultation on website management and development
Moved E-Mail from Outlook to Cpanel
Image optimization
Setting up square payments

On-site

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The Swiss Quality Consulting GmbH

Consultation and network setup on-site of an industry client
Configurations of switches, routers, wifi, network monitoring software and firewalls
Installation of sFirm banking software
Meetings about automation workflows to sync data with MS Dynamics

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Timo Horn

Remove malware from a hacked WordPress website.

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Togemaxx Media & Webdesign

Custom development in over 10 WordPress projects, fixing issues and adding new features.

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Xisio Informationssysteme GmbH

Support with configuring VPN for more stable connection
Cleanup of a hacked server

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Youro GmbH

Shopify theme customisation
Development of custom features
Technical support and consultation on payment integrations

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bermuda.funk Freies Radio Rhein-Neckar e.V.

Programmed Website in Collaboration with a designer and the client.

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sk.design

Customizations and performance optimization of client websites.

Summary

I have been working in web development and Linux system administration since 2011, building and supporting a wide range of projects from custom WordPress solutions to robust server infrastructures. I have set up and maintained servers, handled DNS and email hosting, and streamlined deployments for businesses and open-source projects alike. My experience spans from personal projects to roles at companies like giftGRÜN GmbH and various freelance assignments that challenged me to deliver stable, secure, and efficient solutions.

I am strong in troubleshooting security issues, optimizing code for better performance, and configuring systems that scale. My background in both development and system administration lets me address problems swiftly while maintaining high service quality across many diverse projects and industries.