a Randstad company

Server Ninja with 15+ years industry experience specialising in Unix and Linux cloud-based environments.

Profil
Top-Skills
Unix DevOps Cloud Computing Python Linux Shell-Script Systemadministration SystemArchitektur Automation/Steuerung Git Webserver PHP AWS Solaris BSD Systems Engineering ZFS MariaDB MySQL Cluster Administration Automationstechnik Container Cloud
Verfügbar ab
01.12.2022
Aktuell verfügbar - Der Experte steht für neue Projektangebote zur Verfügung.
Verfügbar zu
60%
davon vor Ort
80%
Einsatzorte

Städte
Berlin (+50km)
PLZ-Gebiete
Länder
Deutschland
Remote-Arbeit
Nicht möglich
Art des Profiles
Freiberufler / Selbstständiger
Der Experte ist als Einzelperson freiberuflich oder selbstständig tätig.

10 Monate

2022-02

heute

Manage and extend the OpenBSD based infrastructure

Systems Engineer BSD Platforms CZDS Domains ElasticSearch ...
Rolle
Systems Engineer BSD Platforms
Projektinhalte
Manage and extend the OpenBSD based infrastructure for the DOTZON solution framework. Monitoring of Abuse cases and development of internal statistic tools.
  • Migration from outdated OpenBSD infrastructure to up-to-date services 
  • Development of tools for billing, abuse monitoring and domain statistics 
  • Introduce new domain crawling methods for statistical use based open source Python solutions
Kenntnisse
CZDS Domains ElasticSearch ICANN OpenBSD OpenSMTPd Perl Python Shell SmartOS TLDBox httpd
Kunde
DOTZON® GmbH
1 Jahr 2 Monate

2021-10

heute

Email Infrastructure

System Specialist Apache Corosync Debian ...
Rolle
System Specialist
Projektinhalte
Providing a full email infrastructure cluster upgrade solution and support for the IT department. Extend the email services with better spam and virus handling
  • Operating system and software update on clustered email infrastructure
  • Migration from SpamAssassin spam detection solution to RSpamd
  • Restructure cluster resources and configuration for cost efficient services deployment 
  • Extending the new introduced webmail Roundcube with custom plugins 
  • Introduce of new sieve email filtering methods for Dovecot IMAP server
Kenntnisse
Apache Corosync Debian Dovecot Exim Kerboros MariaDB OpenLDAP PHP Peacemaker Perl Python RSpamd Shell SpamAssassin Ubuntu
Kunde
Max Planck Institute of Biophysics
1 Jahr 5 Monate

2021-07

heute

Develop and implement a Python based solution

Systems Engineer Storage Automation Alcali CentOS Debian ...
Rolle
Systems Engineer Storage Automation
Projektinhalte
Develop and implement a Python based solution for an automated storage cluster upgrade. Support the storage platform operations team to provide a high available and up-to-date service
  • Improve existing frameworks and interfaces on the existing SaltStack infrastructure 
  • Implement and extened an existing open-source web interface for SaltStack
  • Contribute and provide upstream modules for Python, SaltStack and Alcali
  • Provided SaltStack minion code to create a single-binary program
  • Develop SaltStack orchestration modules to perform infrastructure upgrades 
  • Perform and schedule automated upgrades of system packages, kernel modules and operating systems
  • Develop SaltStack extensions for Prometheus based monitoring solutions
Kenntnisse
Alcali CentOS Debian Docker gunicorn JAVA Jinja MD/RAID MySQL NGINX PostgreSQL Prometheues Python SaltStack Shell Ubuntu YAML
Kunde
1&1 IONOS SE
15 Jahre 7 Monate

2007-05

heute

Consulting and mentorship

Co-Founder
Rolle
Co-Founder
Projektinhalte

[Company name on request] is a dynamic team of computer scientists to provide infrastructure and knowledge to rock the world. The team offers Unix and Linux consultancy services including project analysis and management.

  • Infrastructure, operations and development
  • Unix (Solaris, illumos, BSD) / Linux Consulting and mentorship 
  • SmartOS cloud provider with managed services like DNS, email, databases and application hosting 
  • Providing networking services like VPN gateways and IPv6 routing 
  • Robust software application development and scripting in Node.JS, Python, Shell and C/C++
Kunde
Partner & Server Ninja, [Firmenname auf Anfrage]
1 Jahr 2 Monate

2020-05

2021-06

Supporting the migration from various applications

Enterprise Solution Architect Apache COBOL IBM Websphere ...
Rolle
Enterprise Solution Architect
Projektinhalte
Supporting the migration from various applications running on Oracle Solaris to RedHat Linux. Developing destination infrastructure from enterprise virtualisation to container solutions.
  • Solaris infrastructure, application analysis and documentation 
  • Desiging destination architecutre for the application migration 
  • Coordination with different departments to support a successful migration 
  • Support engineering teams to develop and migration applications to RedHat Linux 
  • Introduce container technologies as an alternative to enterprise virtualisation
  • Management reports, evaluations and presentations
Kenntnisse
Apache COBOL IBM Websphere Java JBoss Kubernetes Microsoft Hyper-V NFS Oracle DB Oracle ExaData Rancher RedHat Samba Shell Solaris VMware ESXi ZFS Zones
Kunde
Deutsche Rentenversicherung Bund
5 Jahre 5 Monate

2016-01

2021-05

Implementation

Cloud Architect & Operator
Rolle
Cloud Architect & Operator
Projektinhalte

Architecture design and installation of private cloud based on SmartOS and Project-Fifo to
run low-latency realtime VoIP services.

  • SmartOS cloud setup and operations with Project-Fifo cloud orchestration
  • Setup and maintenance of highly available, distributed, eventually consistent object store based on LeoFS
  • Implementation of hardware health and service quality monitoring
Produkte
LeoFS LX-branded Zones Munin Project-Fifo SmartOS Ubuntu Zones ZFS
Kunde
ANEXIA Internetdienstleistungs GmbH
2 Monate

2020-04

2020-05

Migrating an PHP and C++ based web application

Cloud Architect AWS C C++ ...
Rolle
Cloud Architect
Projektinhalte
Migrating an PHP and C++ based web application from FreeBSD based on-premise infrastructure to an Linux cloud based solution. Providing a new development, testing and deployment pipeline.
  • Transform FreeBSD based C++ code to support Debian Linux /- Implement Docker based build system to support development and testing cycles 
  • Develop infrastructure as code with Terraform and Amazon Web Services 
  • Migrate PHP 5 frontend to state of the art PHP 7 code 
  • Provide simple build, testing and deployment pipeline with AWS tools
Kenntnisse
AWS C C++ Debian Docker FreeBSD Linux MySQL PHP Shell Terraform
Kunde
PPRO Holding GmbH
4 Monate

2019-12

2020-03

Introducing agile methods and processes

Teamlead IT & Solution Engineer AWS Apache Azure ...
Rolle
Teamlead IT & Solution Engineer
Projektinhalte
Introducing agile methods and processes including standarts in an global IT department. Providing infrastructure services for different development teams.
  • Development of an central Puppet automation infrastructure to orchestrate Debian and RedHat Linux systems 
  • Maintenance of the existing Linux operating system and application 
  • Providing an virtualisation environment based on XEN, KVM and cloud services from AWS and Microsoft Azure 
  • Team organisation, planing and introducing of modern working tools 
  • Planing and executing an Cloud Migration from AWS to Azure 
  • Migration of existing Java and PHP application to an Cloud environment based on Red- Hat
Kenntnisse
AWS Apache Azure Debian Git GlusterFS HAProxy Icinga JBoss Java MySQL NFS Nagios Nginx PHP Prometheus Puppet Python RedHat Samba Shell Xen ZFS libVirt
Kunde
MAGIX Software GmbH
1 Jahr

2019-01

2019-12

Implementation

DevOps Linux & Cloud Architect
Rolle
DevOps Linux & Cloud Architect
Projektinhalte

As part of marketing operations the main focus of the project is to provide a robust platform for the website and content management system in a cloud environment. This includes all
infrastructure architecture aspects and future development.

  • Implementation of an development, testing, acceptance and production workflow for container deployment in Amazon Web Services
  • Infrastructure automation development with Docker, Terraform and Ansible
  • Migration of on-premise content management system to the new platform
  • Development of advanced A/B-group testing system to route customer traffic to specified websites
  • Connecting application and infrastructure monitoring with Datadog, New Relic and AWS Cloudwatch
  • Performance optimisation for the PHP based Content Management System including integration of S3 asset storage and additional CDN provider
  • Operation of the AWS cloud infrastructure and development life cycle
Produkte
Ansible AWS Cloudflare Datadog Docker JavaScript New Relic PHP Python Shell Terraform Ubuntu
Kunde
Avira Operations GmbH & Co. KG
2 Monate

2019-10

2019-11

MySQL Database and Linux operating system

Linux Solution Engineer
Rolle
Linux Solution Engineer
Projektinhalte

MySQL Database and Linux operating system optimisation for PHP based web applications
on an VMware ESXi cluster setup.

  • MySQL performance analyses for queries made by the PHP web application
  • Linux file system and configuration tuning to optimise better i/o performance
  • MySQL configuration modifications to provide application speedup
  • VMware ESXi analyses and configuration changes optimised for Linux
Produkte
Apache BTRFS MySQL PHP SuSE Ubuntu VMware ESXi ZFS
Kunde
pro-samed GmbH
8 Jahre 3 Monate

2010-11

2019-01

Development and management

Cloud Specialist
Rolle
Cloud Specialist
Projektinhalte

Development and management of the SmartOS cloud infrastructure to run virtual machines with VoIP services. Implementation of Ubuntu package management for self-developed telephone software which provide easier deployment.

  • SmartOS Cloud setup and operations with Project FiFo Cloud Orchestration
  • Concept, implementation and operation of an high availability libVirt cluster
  • Development of a backup and restore system via the scripting language bash
  • Migration of an libVirt / KVM based Linux environment into SmartOS
  • IPSec VPN implementation and administration
  • Administration of Ubuntu and CentOS virtual machines
  • Advanced linux and network support
Produkte
Ansible CentOS IPSec KVM Munin OpenVPN SmartOS Ubuntu Zones ZFS
Kunde
Veit & Beck Technology GmbH
9 Jahre 11 Monate

2009-02

2018-12

Implementation

IT systems engineer
Rolle
IT systems engineer
Projektinhalte

Focus on system operation and continuous delivery in cloud based environments. Development and implementation of automation workflows in cooperation with operation and development teams.

  • Linux automation with Puppet and SaltStack with focus on system operation
  • Service migration from datacenter servers to AWS cloud based environment 
  • Operations of Atlassian toolstack (Confluence, Jira, BitBucket, Bamboo and HipChat) 
  • Conception and administration of PHP, Percona Galera web cluster in AWS ? Security concept for Linux in cloud based environments 
  • Implementation of Nagios monitoring solution for the worldwide infrastructure 
  • Administration of an global OpenVPN architecture 
  • Automated backup solution to S3 via AWS Lambda
  • System administration and implementation of high availability file system cluster 
  • Linux and Windows image preparation via Packer for CI/CD pipelines 
  • Keygenerator development in Java and continued operations 
  • Managing and administration of an Citrix XenServer with an Self-Service portal 
  • Implemented and automated an Hadoop setup with Puppet
  • PKI Solution based on OpenSSL / HSM development and administration 
  • Linux and iptables based Firewall and Router management
Produkte
Ansible Atlassian toolstack AWS AWS Lambda CloudStack Forman Gentoo GlusterFS icinga iptables Java Nagios OpenSSL Packer Pagerduty Percona PHP PKI Postfix ProFTPd Puppet Python SaltStack Slack Ubuntu CoroSync Hadoop OpenVPN Pacemaker Xen
Kunde
Avira Operations GmbH & Co. KG
2 Jahre 7 Monate

2012-05

2014-11

Development of python/django web interface to collect cable length and quality information from german telecommunication provider

Python software developer
Rolle
Python software developer
Projektinhalte
  • Design and development of a web based electronic carrier interface
  • Support and expansion for the web application
Produkte
Django Python Ubuntu
Kunde
Telekommunikation Lindau GmbH
4 Monate

2011-06

2011-09

Java development

Linux system administrator
Rolle
Linux system administrator
Projektinhalte

Leading a team of students and contractors to implement and extend a monitoring solution. To monitor IBM internal services and products we developed an extension for Nagios in the Java programming language.

  • Java development of Nagios extension
  • Implementation of Nagios monitoring solution
Produkte
CentOS Java Nagios RedHat
Kunde
IBM Deutschland GmbH
7 Jahre 3 Monate

2004-04

2011-06

implementation

Partner and system administrator
Rolle
Partner and system administrator
Projektinhalte

Co-Founder of the webhosting company which has been transfered to [Company name on request]. Development of web and database cluster solutions to scale by customer needs.

  • Setup high-availability cluster with GlusterFS, HA-Proxy and MySQL-Proxy
  • MySQL-Master-Master replication concept and implementation
  • Extend website speed with Nginx microcaching setup
Kunde
reco-systems GbR
5 Monate

2009-02

2009-06

Domain and DNS management

Hostmaster and system administrator
Rolle
Hostmaster and system administrator
Projektinhalte

As part of the hostmaster team we provided the web services for all ingame platforms to their customers. Management of different content management systems, database and
web server cluster setup based on MySQL, Apache and HAProxy.

  • Migrate hosted content management systems to dedicated infrastructure
  • Build and integration of high available web service cluster
  • Domain and DNS management with self developed configuration tools
  • CMS support for community members and technical journalists
Produkte
Apache Debian DNS CentOS HAProxy MySQL PHP
Kunde
ingame GmbH
3 Jahre 6 Monate

2005-09

2009-02

Setup and development

Linux system administrator
Rolle
Linux system administrator
Projektinhalte

Maintenance and administration of Gentoo-Linux servers to provide web, file and network services to the users. Infrastructure script development in Bash, PHP and Perl.

  • Linux system administration for web, file and network servers
  • Monitoring implementation via Nagios for Windows and Linux servers
  • Setup and development of OTRS helpdesk system in an clustered web environment
  • Java and web cluster development of product license system
Kunde
Avira GmbH
1 Jahr 1 Monat

2006-11

2007-11

infrastructure

Test inspector
Rolle
Test inspector
Projektinhalte

As Pearson VUE test inspector preparation of the test machines and infrastructure in the test center was required. Responsibilities included running a successful test environment and monitor the exams.

  • Exam supervision for CCNA, MCP and LPI
  • Preparation for different exams
Kunde
Elektronikschule Tettnang
3 Jahre 8 Monate

2001-11

2005-06

PHP development

Software tester
Rolle
Software tester
Projektinhalte

Responsible for testing the antivirus products on Windows, OS/2 and Novell NetWare. Development
of an testing framework to manage and evaluate test protocols.

  • Quality assurance of the antivirus product for Windows, OS/2 and Novell NetWare
  • PHP development of an web application to evaluate test protocols
  • Fli4l router installation and administration for the QA department
Kunde
H+BEDV Datentechnik GmbH

4 Jahre 1 Monat

2009-02

2013-02

Computer Science

Bachelor of Science, University of Applied Sciences Weingarten
Abschluss
Bachelor of Science
Institution, Ort
University of Applied Sciences Weingarten
Schwerpunkt
  • multimedia
  • information networks
  • software engineering
  • Thesis: on request
2 Jahre 5 Monate

2005-09

2008-01

IT specialist, Information- and communication technology

Elektronikschule Tettnang
Institution, Ort
Elektronikschule Tettnang
Schwerpunkt
  • cisco networks

  • system administration

  • automation

  • Final project: Integration of the OTRS helpdesk solution into an high availability cluster  

1 Jahr 9 Monate

2003-09

2005-05

Assistant of information and communication technology

Elektronikschule Tettnang
Institution, Ort
Elektronikschule Tettnang
Schwerpunkt
  • system administration
  • php and java development
  • electrical engineering
  • Final project: Development of an PHP application to automate software test protocols

Deutsch
Englisch

Top Skills
Unix DevOps Cloud Computing Python Linux Shell-Script Systemadministration SystemArchitektur Automation/Steuerung Git Webserver PHP AWS Solaris BSD Systems Engineering ZFS MariaDB MySQL Cluster Administration Automationstechnik Container Cloud
Produkte / Standards / Erfahrungen / Methoden

Profile

Server Ninja with 15+ years industry experience specialising in Unix and Linux cloud-based environments. IT Consultant and automation expert with business analyst know-how to optimise processes.

Betriebssysteme
Mac OS Unix
Programmiersprachen
C Java Perl PHP Python Scriptsprachen Shell TeX, LaTeX
Datenbanken
MySQL Postgres SQL
Datenkommunikation
Ethernet Internet, Intranet Message Queuing SMTP SNMP TCP/IP
Hardware
Ascii/X - Terminals CD-Writer / Brenner Drucker Emulatoren HP Macintosh Modem PC Proprietäre HW SUN

affiliation and selected talks: on request

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