Matthias Weiss - DevOps Engineer for Cloud and Databases

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Boms, Germany

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Experience

Jan 2025 - Jun 2026

1 year 6 months

Munich, Germany

DevOps Engineer

Interhyp AG

Infrastructure management with Puppet and Terraform for consistent environments
Maintenance and adaptation of Terraform scripts for Azure cloud deployment
Migration of database systems and services to the Azure Cloud
Introduction of GitOps with ArgoCD for fully automated deployments
Adaptation and development of GitHub pipelines for CI/CD workflows
Creation of Helm Charts for standardized deployments
Migration of repositories from Bitbucket to GitHub
Operation and performance optimization of an Oracle 19c Grid cluster (RAC, Dataguard)
Setup and management of MongoDB instances (on-premise and Azure Kubernetes)
Setup of PostgreSQL clusters in on-premise and Azure Kubernetes environments
Migration of services, master data, and stored procedures from Oracle to PostgreSQL
Troubleshooting and performance tuning of complex data infrastructures
Installation, configuration, and upgrade of Tableau in the productive BI environment
Development of sanity checks to monitor business processes and application logic
Adaptation of the backup and recovery strategy to new requirements
Execution of disaster recovery and point-in-time recovery
Technologies used: Oracle 19c RAC Grid Dataguard, PostgreSQL 16, MongoDB, MySQL Cluster, Kubernetes (Azure), Tableau, Puppet, Terraform, ArgoCD, GitHub/Bitbucket, CheckMK, Prometheus, Grafana, Icinga2, Ubuntu/RHEL

Sep 2024 - Nov 2024

3 months

Germany

DBA / Consultant

Bundesdruckerei

Analysis and resolution of deadlock issues in the Galera Cluster
Performance tuning and optimization of the database configuration
Setup, backup, and recovery of the Galera Cluster
Adaptation of Ansible scripts for automated installation and configuration
Technologies used: MySQL, MariaDB, Galera Cluster

Sep 2022 - Dec 2024

2 years 4 months

Germany

DevOps Engineer (Cloud Architect)

Dataport AÖR

Planning and implementation of the on-premise cloud architecture
Management of the setup and optimization of existing and new cloud infrastructures
Setup of containers and cloud infrastructure for the IONOS Cloud target environment
Integration of new specialist applications into the existing cloud infrastructure
Migration of YAML configurations to Helm Charts for standardized deployment
Adaptation of GitLab repositories and CI/CD pipelines
Introduction and adaptation of Terraform for rollouts on external systems
Development of Docker containers for monitoring solutions
System hardening for Linux systems and containers in accordance with BSI requirements
Implementation and maintenance of the operations manual according to BSI-Grundschutz
Regular execution of BSI-Grundschutz audits and penetration tests
Creation of backup and security concepts for KRITIS requirements
Introduction of HashiCorp Vault as central secrets management
Migration and operation of database systems (PostgreSQL, MySQL, MariaDB, Oracle)
Migration from Oracle to PostgreSQL, including stored procedures and master data
Implementation of high-availability solutions for databases in the KRITIS environment
Planning and execution of disaster recovery and point-in-time recovery
Introduction of Dell PowerProtect for backing up stateful containers (e.g., Elasticsearch)
Technologies used: Docker, GitLab, Prometheus, Icinga2, Grafana, ELK, Kibana, Elasticsearch, Ranger, IONOS, Helm Charts, Kubernetes, PostgreSQL, MySQL, MariaDB, Ubuntu, SLES, OpenSearch, Oracle 19c, Keycloak, ClamAV, Apache Tomcat, JBoss

Oct 2020 - Aug 2023

2 years 11 months

Germany

MySQL DBA

Landesamt für Digitalisierung, Breitband und Vermessung

Execution of the MySQL upgrade paths 5.6 → 5.7 → 8.0
Evaluation of the migration path to MariaDB as an alternative to MySQL
Data and service migration from Oracle to MySQL and PostgreSQL
Interim support for colleagues with PostgreSQL upgrades
Setup of Galera clusters in geographically redundant data center operations
Implementation of replication solutions for data backup and distribution
Planning of failover protection and disaster recovery scenarios
Creation of a role and permissions concept for MySQL 8
Implementation of the security concept according to BSI-Grundschutz and ISO 27001
Setup of a monitoring system with Icinga2 for all database systems
Execution of performance analyses and targeted tuning measures
Advising development teams on performance optimization and schema design
Reorganization of backup and recovery scenarios for Galera Cluster and MySQL 8
Planning of failover protection and disaster recovery
Technologies used: MySQL 5.6/5.7/8.0, MariaDB 10.4, XtraDB, Galera Cluster, PostgreSQL, Docker, Git, SLES 11 SP4/12/15, Ubuntu 20.04, Icinga2, Icingaweb2, Grafana, InfluxDB, Veritas Cluster Server, Borg

Apr 2020 - Dec 2020

9 months

Germany

DevOps Engineer

weiss Systemtechnik

Setup of cloud-based cluster solutions for the rapid rollout of shop platforms
Design and implementation of automated rollout mechanisms
Optimization of Docker containers for maximum performance and efficiency
System administration and infrastructure tuning
Setup and maintenance of MySQL clusters and highly available databases
Setup of MySQL Enterprise Monitoring to monitor database performance
Patching and version upgrades of database systems
Setup of a monitoring system based on Icinga2
Automated integration of monitoring into the existing infrastructure
Development of custom monitoring plugins for Icinga2
Setup and configuration of payment service providers
Backup and disaster recovery for containers, systems, and databases

Feb 2019 - Apr 2020

1 year 3 months

Hanover, Germany

DevOps Engineer

TUI Deutschland

Detailed analysis of existing data processing processes and migration strategies
Development of proof of concepts (PoCs) for Azure, AWS and Google Cloud
Evaluation and migration of existing system landscapes to cloud environments
Planning resource usage in time slots to reduce costs
Migration and development of batch jobs based on Cygwin, PowerShell and Bash
Introduction of and migration to Git as a version control system
Automated integration of Icinga monitoring into the cloud infrastructure
Development of custom monitoring plugins for Icinga2
Training employees in the new cloud technologies and processes

Sep 2016 - Dec 2018

2 years 4 months

Nuremberg, Germany

DevOps Engineer

ING DiBa

Current-state analysis of the application landscape and communication architecture
Identification of potential improvements and development of a target architecture
Rebuilding the infrastructure for horizontal scalability and automation
Migration of legacy systems to current versions (SLES 11/12/15, RHEL 6/7)
Database patching, version upgrades and setup of MySQL Enterprise Monitoring
Increasing the efficiency of production processes through CI/CD pipelines
Dividing networks into security zones according to regulatory requirements
Implementing the network infrastructure according to BaFin and BSI requirements
Analysis and resolution of CERT notifications
Setting up SIEM monitoring to detect security-related events
Creating security documents and operating manuals for BSI and BaFin
Developing a disaster recovery plan for the new infrastructure
Data backup with mysqlbackup, Borg and custom scripts
Automated integration of Icinga monitoring and development of custom plugins

Apr 2016 - May 2018

2 years 2 months

Karlsruhe, Germany

Architect and DevOps

1&1 Internet AG

Reorganization and modernization of the infrastructure, including Java upgrade (1.7→1.8)
Migration of legacy systems to current versions
Setup of a load-balancing infrastructure
Setup of a network stack for failover scenarios using BGP
MySQL version upgrades, patching, performance tuning and analysis
Rollout of Icinga2 monitoring, including custom plugin development
Development of a backup and recovery plan for georedundant operation
Introduction of Bacula as a central backup solution

Mar 2016 - Sep 2016

7 months

Karlsruhe, Germany

Project Management and Database Administration

1&1 Internet AG

Setup of Linux systems and network infrastructure
Implementation of the Border Gateway Protocol for georedundancy
Integration and configuration of JBoss application servers
Automation of MySQL database systems (configuration and rollout)
Planning and setup of georedundant MySQL database systems
Setup of automated rollout mechanisms using Jenkins pipelines
Setup of the monitoring system and development of custom Icinga plugins

Apr 2014 - Mar 2016

2 years

Montabaur, Germany

Project Management and DevOps

1&1 Internet AG

Setup of new JBoss infrastructure for test and production environments
Java upgrades (1.5→1.6→1.7) and introduction of JBoss 7 and Tomcat 7
Replacement of Sybase with PostgreSQL database systems
Migration of backend systems from Oracle 10 to 12
SEPA transition: bug fixing and troubleshooting of affected applications
Documentation of the existing system landscape
Creation of rollout and QA processes

Jul 2013 - Mar 2014

9 months

Project Management and DevOps

1&1 Internet AG

Set up new JBoss infrastructure for testing and production
Optimized company and production processes
Introduced Kaizen and continuous quality improvement
Introduced QA processes to comply with ISO 9001:2009
Set up new sales structures and streamlined the infrastructure
Created action plans with ongoing performance monitoring through KPI reports
Migrated backend systems from Oracle 10 to 12

Apr 2013 - Dec 2013

9 months

Managing Director

weiss Systemtechnik

Administered systems and applications
Supported development in architecture and optimization (nearshore and offshore)
Created and implemented geo-redundancy
Developed tools for automated builds, unit tests, and deployment
Developed KPI reports and reporting tools for process automation
Rebuilt monitoring with Icinga and CheckMK, including KPI reporting
Automated the integration of new systems into monitoring (400 hosts, 12 000 services)
Created action plans and monitored implementation
Introduced QA processes to comply with ISO 9001:2009

Jun 2012 - Apr 2013

11 months

Karlsruhe, Germany

Project Management and Administration

1&1 Internet AG

Managed and coordinated the database migration in cooperation with development
Reduced the load on the central database system by separating database schemas
Optimized backend integration and planned geo-redundancy
Supported development in architecture and optimization (Hibernate, business workflow)
Created customer-specific KPI reports and monitoring dashboards
Automated the integration of new systems into monitoring (400 hosts, 12 000 services)
Rebuilt monitoring with Icinga and CheckMK, including KPI reporting

Apr 2011 - Jun 2012

1 year 3 months

Karlsruhe, Germany

Project Management and DevOps

1&1 Internet AG

Managed and coordinated the migration with application development
Created customer-specific reports (KPI) and monitoring solutions
Supported development in architecture and optimization (Hibernate, business workflow)
Reduced the load on the central database system by separating the database schema
Optimized backend integration and planned geo-redundancy

Jul 2010 - Apr 2011

10 months

Mainz, Germany

Project Management and Software Development

Coface

Operated and optimized the application and system landscape based on BEA Weblogic and Oracle
Analyzed and tuned the performance of the overall infrastructure
Set up Linux-based cluster systems, including load balancing
Administered Oracle Dataguard and Active Dataguard
Performed backup and recovery using Oracle RMAN
Developed Perl scripts for batch applications and data processing
Migrated monitoring from Icinga to Icinga2

Apr 2010 - Jul 2010

4 months

Montabaur, Germany

Project Coordinator / DevOps

1&1 Internet AG

Development of portlets for support applications
Development of JMS services for asynchronous status and permission management
Operation of complex middleware environments (Apache, Tomcat, JBoss)
Performance analysis, tuning, and bug fixing (MySQL, J2EE)
Troubleshooting and issue resolution for third-party integrations

Jun 2008 - Mar 2010

1 year 10 months

Munich, Germany

Database Administrator

1&1 Internet AG

Installation, maintenance, and setup of the database infrastructure
Oracle DB upgrades (9i→10g→11gR2) as well as MySQL patch management and upgrades
Design of geographically distributed redundancies (Twin Datacenter EMEA and USA/APAC)
Migration of data from previously overlapping business areas
Data analysis, evaluation, and KPI reporting
Project management for the consolidation of national and international mail systems

Oct 2007 - May 2008

8 months

Hamburg, Germany

Project Management and Development

UMC Global

Planning and setup of the maritime network infrastructure (satellite/UMTS)
Setup of comprehensive network connectivity for container shipping
Setup of data replication for Lotus Notes and other applications
Development of priority-based data replication with cost optimization
Development of backend components and services as an information layer (EJB 3.0, Hibernate)
Migration of master data from external systems

Jul 2007 - Oct 2007

4 months

Munich, Germany

Tester

T-Systems

Test analysis and test execution
Test specification
Test automation

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Telecommunication, Government and Administration, Banking and Finance, Real Estate, and Tourism.

Information Technology

Telecommunication

Government and Administration

Banking and Finance

Real Estate

Tourism

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Operations, Project Management, and Quality Assurance.

Information Technology

Operations

Project Management

Quality Assurance

Summary

Many years of experience in building, operating, and optimizing complex infrastructure and database systems, with a focus on high availability, scalability, and security - both in on-premise environments and in the cloud (Azure, AWS). Particularly strong expertise in deployment automation, monitoring infrastructures (e.g., Icinga2, Prometheus), as well as the migration and lifecycle management of relational and NoSQL databases such as Oracle, PostgreSQL, MySQL, and MongoDB. Main focus on regulated environments with requirements for compliance, availability, and disaster recovery (BSI-Grundschutz, ISO 27001, KRITIS).

As a generalist, I quickly identify customer requirements and implement them independently. I combine forward-looking planning, tactics, and diplomatic action to confidently master even major challenges. My technical background helps me assess situations, decisions, and their consequences.

Skills

Cloud & Devops: Kubernetes, Docker, Helm Charts, Terraform, Argocd, Azure Devops, Aws, Ci/Cd, Gitops, Github Actions, Gitlab Ci
Databases: Oracle 19c (Rac, Dataguard, Rman), Postgresql, Mysql/Mariadb (Galera Cluster, Replication), Mongodb, Elasticsearch/Opensearch
Monitoring: Icinga2, Prometheus, Grafana, Checkmk, Elk Stack, Mysql Enterprise Monitor
Security & Compliance: Bsi-Grundschutz, Iso 27001, Kritis, System Hardening, Penetration Tests, Keycloak, Hashicorp Vault
Operating Systems: Sles (10-16), Rhel (6-9), Ubuntu, Debian
Programming: Bash, Python, Perl, Java (J2ee), Php, Sql/Pl-Sql

Languages

German

Native

English

Advanced

Education

TU München

Electrical Engineering · Munich, Germany

FH Isny

Computer Science · Isny im Allgäu, Germany

Statistics

Experience

Total positions 19

Experience in Information Technology 12.5 y

Avg length 1 y 2 m

Longest experience 2 y 10 m

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles DevOps Engineer, DBA / Consultant, DevOps Engineer (Cloud Architect)

Main industries Information Technology, Telecommunication, Government and Administration

Main business areas Information Technology, Operations, Project Management

Member since

June 2026

Last update

October 2026

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Frequently asked questions

Have questions? Find more information here.

Matthias is based in Boms, Germany.

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

Matthias has at least 19 years of experience. During this time, Matthias has worked in at least 14 different roles and for 11 different companies. The average length of individual experience is 1 year. Note that Matthias may not have shared all experience and actually has more experience.

Based on recent experience, Matthias would be well-suited for roles such as: DevOps Engineer, DBA / Consultant, DevOps Engineer (Cloud Architect).

Matthias's most recent position is DevOps Engineer at Interhyp AG.

In recent years, Matthias has worked for Interhyp AG, Bundesdruckerei, Dataport AÖR, Landesamt für Digitalisierung, and Breitband und Vermessung.

Matthias is most experienced in industries like Information Technology, Telecommunication, and Government and Administration. Matthias also has some experience in Banking and Finance, Real Estate, and Tourism.

Matthias is most experienced in business areas like Information Technology, Operations, and Project Management. Matthias also has some experience in Quality Assurance.

Matthias has recently worked in industries like Government and Administration, Information Technology, and Banking and Finance.

Matthias has recently worked in business areas like Information Technology and Operations.

Matthias attended TU München for Electrical Engineering.

Matthias will be available from January 2027.

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Daily rate avg. 951 €

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Median rate 940 €

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Calculated based on our freelancers’ daily rates as of 30 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.