Wolfgang B. - Freelancer

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Düsseldorf, Germany

Experience

Sep 2024 - Present

1 year 1 month

MariaDB Administration

Subsidiary of a DAX 40 company

Administration of MariaDB databases
Automation of regular system patching
Programming utilities for administration, configuration, and automation of database processes
Incident and problem management within the ITSM framework

Jan 2024 - Mar 2024

3 months

Estonia

Install open source github project

teratalker.com

Server (Debian) setup on Google Cloud Platform (GCP)
Installation and configuration of openplayground
Fixing errors in the original code base
Adapting the application to customer-specific requirements

Jan 2024 - Jan 2024

1 month

Nördlingen, Germany

Setup Ubuntu Rack Server (Gateway & Fileserver)

Carbotek

Installing a Samba file server
Setting up DHCP access for some Windows PCs

Feb 2023 - Present

2 years 8 months

Perl Development for philaseiten.de

philaseiten.de (Owner Richard Ebert)

Maintenance and extension of the large codebase (> 100,000 LOC)
Performance tuning
Support for migration to a PHP/Laravel-based system

Feb 2023 - May 2023

4 months

Wellesley, United States

Test and provide feedback on installation documentation for an open source product

Center of Complex Intervention

Testing and reviewing the installation guide for a new database system

Jan 2023 - Apr 2023

4 months

Seattle, United States

Convert old-style T(w)enex mail files to mbox format

Jason Self

Development of an application to convert emails and bulletin board messages from T(w)enex to a Mutt-readable format

May 2022 - Oct 2022

6 months

Santa Clara, United States

Server administrator to install and deploy LiveSwitch server cluster

xirsys

Installation and configuration of a WebRTC-based video conferencing system

May 2022 - Jun 2022

2 months

Nashville, United States

Install and deploy Kasm Workspaces using multi-server installation in Digital Ocean

Brent Anderson

Installation and configuration of an application for streaming a desktop environment into a web browser (KASM)

Apr 2022 - Jan 2023

10 months

Düsseldorf, Germany

Workflow monitoring system

Neural Search Labs GmbH

Review of requirements documentation and implementation for a cross-platform marketing system (Keyword Assessment)

Sep 2020 - Apr 2022

1 year 8 months

Hamburg, Germany

Centos 7/Webmin/Virtualmin OpenVPN Postfix Dovecot PHP MariaDB etc Server admin

consultD

Administration of a web hosting server and the systems installed on it

Aug 2019 - Apr 2022

2 years 9 months

Minneapolis, United States

Developer needed for creating custom scripts

Analytics International Inc.

Programming a health-check report system to evaluate a SaaS solution based on SAS

Aug 2019 - Dec 2019

5 months

Perl Scripting for AIX, Linux for generating the csv file format

Rhidima Deva

Creating Perl scripts for health checks and system monitoring via Rundeck

Jun 2019 - Aug 2019

3 months

New Brunswick, United States

Perl script to put file to SFTP host in Windows

David Stein

Troubleshooting a script for SFTP data transfer on Windows

May 2019 - Jun 2019

2 months

Kristiansand, Norway

Server manager - Linux Lightsail server with Wordpress

Idéklekkeriet AS

User management and hardening of an AWS Lightsail instance

May 2019 - Jun 2019

2 months

Wrexham, United Kingdom

Freelancer needed to assist deploying a MapGuide server with SSL

Line Design Technology Limited

Installing an SSL certificate to secure the MapGuide server

Nov 2018 - Mar 2019

5 months

Stuhr, Germany

Plesk Migration Check

Kudling Spielwaren

Checking proper access to the database of a Shopify website after migrating to a new server

Oct 2018 - Oct 2018

1 month

London, United Kingdom

Professional Shell/Bash Scripter to Automate tasks

IVNDB

Creating shell scripts to automate tasks on macOS
Simplifying an existing script

Sep 2018 - Oct 2018

2 months

Brussels, Belgium

Backup of VPS

Linski Trade Tools

Migrating the operating system from OpenSuse 13.1 to Debian 8 (Jessie)
Migrating WordPress to version 4.9.8
Design and implementation of an automatic backup procedure based on the Plesk control panel backup manager

May 2018 - Sep 2018

5 months

Dresden, Germany

Task/background job for Kivitendo (SQL-ledger based)

Opis Technology GmbH

Programming and integration of a Perl module for currency conversion in existing invoices for the Kivitendo ERP system

Nov 2017 - Nov 2017

1 month

Dresden, Germany

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Matthias Klopp

Fixing an email-based alert function
Extending a Perl/CGI-based web app to let users edit their own ad list
Extending a Perl/CGI-based web app to let users modify their photo collection

Oct 2017 - Nov 2017

2 months

Varsity Lakes, Australia

sftp server side configuration

Talkup

Programming a script to set up a custom directory for call recordings of a telephone system and download via SFTP
Generating the necessary SSH keys

Oct 2016 - Feb 2017

5 months

Lewiston, United States

Custom Data Collecting / Scraping Perl script Repair

Supply Solutions

Fixing bugs and improving a Perl-based web scraping tool

Jan 2008 - Dec 2008

1 year

Substitution of the DEC-8400-based metrica platform at E-Plus / ALNS by a SUN E 6900

E-Plus GmbH

Designing and implementing the migration of the central, metrica-based performance management system from DEC 8400 (OSF/1) to SUN E 6900 (SunOS)

Jan 2004 - Dec 2004

1 year

Cross-platform migration of the metrica/NPR installation (database part, phase 1) from DEC 4100 to SUN V 880

E-Plus GmbH

Designing and coordinating the migration of the regional performance management databases from DEC 4100 (OSF/1) to SUN V 880 (SunOS)

Jan 2002 - Dec 2008

7 years

Administration and programming of the central performance management system

E-Plus GmbH

Administration and programming of the central performance management system (RDBMS)
System integration of vendor-specific techpacks
Technical project management of various migration projects
Monitoring and automating ETL processes
Reviewing and creating system documentation

Summary

With over 25 years of experience in professional software development and extensive knowledge in system administration (Linux / Unix / databases), I offer my clients a wide range of options to achieve their technical visions and goals at the highest level.

About 50 projects, mostly with top ratings on a US-based workforce platform, speak for themselves (details on request). The services I have provided range from custom development of new applications to extending/maintaining existing software systems (web applications, front-end, back-end) to administrative tasks in database areas (MySQL/MariaDB) and on Linux systems (upgrades, system integration, migrations, backups, network connectivity, web servers, and more).

During my time as a database administrator at one of the German mobile network providers, I developed comprehensive skills in database administration and programming, which I am currently applying and further developing at a subsidiary of a large German ICT provider in the open-source database area (MySQL/MariaDB).

If you are looking for an exceptional freelance professional with a strong customer focus, excellent quality awareness, and outstanding analytical skills to successfully deliver your IT projects, you have found him.