Thomas Pätzold-Unix/Linux Administrator
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Experience
Unix/Linux Administrator
BDAV Verwaltungs GmbH
- Consulting and project management to build an AI-based automation platform for market data analysis
- Automated testing of financial data
- Market data automation with Python and N8N
- AI data integration and AI learning
- Use of Ollama and Qwen
- Data organization and database management
Unix/Linux Administrator
Exactag GmbH
Managing comprehensive RedHat, CentOS, and Ubuntu servers (bare metal, VMs)
Disaster recovery strategies and Bareos backup integration with ReaR and VMware Backup
Elasticsearch management and integration into SIEM structures
Ansible automation: creating playbooks to automate operations
Security audits with Tenable and deployment/testing of updates
Setting up a Zabbix 7 environment to monitor servers, applications, and backups
Building Elasticsearch/OpenSearch clusters with Apache Kafka, Logstash, and Rsyslog
Implementing data backup and recovery with Bareos, ReaR, and Gluster
Unix/Linux Splunk Administrator
Finanzinformatik GmbH
Server-side support for IT audit, access monitoring, and SOC instances with Splunk Enterprise
Creation of input and parser apps
Administration of hosts and support for connected clients to integrate with Splunk
Setting up syslog funnels
Updating, maintaining, and troubleshooting the Splunk Enterprise infrastructure
Data management and backup with TSM
Creation and rollout of an encryption concept for Splunk Web and Universal Forwarder
Technologies/methods: AWS, Splunk, JIRA, RedHat Enterprise, SUSE Linux, SIEM, QualityCenter, TSM, Apache, Tomcat, ServiceNow, Syslog, Rsyslog, Ansible
Deployment & Operations Specialist
Axis 24 GmbH
- Requirements analysis and rollout of the in-house trusted email and newsletter platform with Arpreach
- Selection of mail server software (Postfix) and provisioning of redundant hardware
- Audit and analysis of email providers’ requirements (T-Online, Web.de) for “trusted” status
- Evaluation of available newsletter services for the marketing team
- Communication with software vendors and integration analysis
- Installation and integration of CRM software
- Training staff on using and sending newsletters
- Building the email infrastructure and security components (DNS-SEC, SSL, Postfix, SpamAssassin, Dovecot, black-/whitelists, SpamCop)
- Setting up the mail filter structure with Sieve
- Reporting and monitoring logs with Fail2Ban and custom solutions to detect suspicious activity
Senior Deployment & Operations Specialist / Project Manager
Axis 24 GmbH
Coordinating employees and agencies during the migration of shop software and server infrastructure
Planning, implementing, and rolling out the new web infrastructure and replacing the Proxmox solution with LXC containers
Security audit of the e-commerce application
Adapting the software to inventory management systems (Magento API → Lexware)
Development of an internal reporting system (PHP, Perl, Bash)
Optimizing response times between Apache and MySQL
Creating load tests and failover scenarios in collaboration with the hosting provider
Developing decentralized automated backup solutions
Planning and implementing disaster recovery scenarios (data loss, hacking attacks, DDoS)
Developing a backend firewall to detect and block attacks from third countries
Technologies/methods: Magento, OsCommerce, Apache, Linux LXC, Proxmox, MySQL cluster, Windows Server, virtualization, IPTABLES, Perl, PHP, Bash
Solution Testing
ProMade UG
- Coordination of server-side optimization of e-commerce applications
- Test reporting, load testing and security audits
- Cost/lifecycle analysis
IT Consultant
Vodafone Global
- Deployment and operations (Unix/Solaris) of the developed software
- Change management with Remedy
- Test management in HP Quality Center
- Reporting to production managers
- On-call support for server-side troubleshooting during application outages
Technical Marketing and IT Expert
Axis 24 GmbH
Setup and maintenance of IT infrastructure (security management, updates, monitoring, reporting)
Building and maintaining Linux clusters and applications (OsCommerce, Apache, MySQL, Postfix, DNS BIND/PowerDNS)
Design and development of traffic analysis software (PHP, Perl)
IT systems: Windows Server, FreeBSD, Debian
Datacenter Administrator / IT Expert
Perfekt-NET
- Maintenance of the server farm
- Linux/Unix administration and application support
- Troubleshooting (Apache, PHP, Java, Tomcat, MySQL, Perl)
Datacenter Administrator / IT Expert
Powerteam Network
- Linux/Unix administration
- Web development and SEO
- Email newsletter solutions (Perl, PHP)
- Customer support for applications
IT System Administrator (Apprenticeship)
Rose Computer GmbH
- Apprenticeship as an IT system administrator focusing on internet, server systems and Linux
- Projects: Novell (Schools Online), Babcock real-time information systems, RedHat/SUSE
IT Support – Web Development
WMO Online
- Support in creating web applications
- Programming in Perl, Bash, SSI and ASP
- Customer support for ISDN/modem-based internet connections
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Banking and Finance, Advertising, and Telecommunication.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Project Management, Product Development, Business Intelligence, and Quality Assurance.
Summary
Mr. Thomas Pätzold is a Deployment & Operations specialist with over 23 years of IT experience. He has broad knowledge and experience in design, development, testing, analysis, and operation of IT solutions. He is technically analytical and finds solutions even under pressure. He is a trained IT system administrator focusing on data center administration for B2B/B2C.
Skills
- Operating Systems: Unix (Solaris, Freebsd), Linux (Redhat (Centos/Alma), Debian, Ubuntu, Suse), Windows Server (Basic)
- Server-Side Applications: Bareos, Gluster, Elasticsearch, Opensearch, Kibana, Zabbix, Apache2, Bind9, Powerdns, Mysql, Mariadb, Nginx, Splunk, Puppet, Docker, Lxc, Proxmox, Tomcat, Postfix, Dnssec, Svn, Mercurial, Git
- Programming/Script Languages: Php, Perl, Python, Bash, “Sql”
- Common Web/Desktop Applications: Office, Email, Remedy, Hp Qualitycenter
- Others: Disaster Recovery, Analytics, Sea, Sem, Scrum, Itil V3 Knowledge
Languages
Education
Rose Computer GmbH
IT System Administrator training · IT System Administrator · Bocholt, Germany
Certifications & licenses
Adwords Certified Individual
Statistics
Experience
Expertise
Qualifications
Profile
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