Experienced Solution Engineer - MariaDB (REF5067N)
Join the team at operational services GmbH within Deutsche Telekom IT Solutions, offering opportunities for German- and English-speaking talents. OS is one of the leading ICT service providers in the German market, delivering modern and secure IT solutions, long-term operational support, and ensuring availability of critical business processes for medium-sized and enterprise customers.
Purpose of the Role
We are looking for a Senior MariaDB Expert who will serve as a technical specialist for designing, building, monitoring, optimizing, and maintaining MariaDB database environments.
The role also includes analyzing datasets, identifying optimization opportunities, improving performance, and validating technical approaches through data-driven decision-making.Key Responsibilities
• Administration, operation, and maintenance of MariaDB database environments
• Design, implementation, and optimization of MariaDB architectures
• Planning and executing installations, upgrades, migrations, and patching of MariaDB instances
• Monitoring database performance and tuning queries, indexes, and configurations
• Implementing and maintaining backup & recovery strategies, including PITR (Point-in-Time Recovery)
• Troubleshooting database issues, analyzing root causes, and implementing long-term fixes
• Ensuring high availability, reliability, and optimal performance of MariaDB systems
• Managing replication setups (master-slave, GTID, semi-sync, etc.)
• Supporting high availability and disaster recovery (HA/DR) environments (e.g., Galera Cluster, MaxScale)
• Creating and maintaining technical documentation, runbooks, and operational procedures
• Collaborating closely with development, infrastructure, and operations teams
• Ensuring compliance with security policies, audit standards, and general governance requirements
• Contributing to automation initiatives and continuous service improvements
Qualifications
Required Skills & Experience
• Minimum 3 years of hands-on experience with MariaDB or MySQL administration
• Strong understanding of MariaDB architecture, components, and internal processes
• Practical experience with:
• Installation, configuration, maintenance
• Query tuning, execution plan analysis, indexing strategies
• Backup & recovery concepts and tools
• Monitoring and troubleshooting complex issues
• Solid knowledge of SQL and ability to optimize complex queries
• Familiarity with Linux server environments (administration fundamentals required)
• Experience with replication (ROW/STATEMENT, GTID, async, semi-sync)
• Experience with HA/cluster setups (Galera, MaxScale – advantage)
• Analytical, systematic, and structured way of working
• Strong teamwork, communication skills, and customer-oriented approach
• Ability and willingness to perform on-call duties
Nice-to-Have Technical Knowledge
• Experience with additional RDBMS platforms (Oracle, PostgreSQL, MS SQL Server)
• Understanding of cloud-based database services (Azure, AWS RDS, Google Cloud SQL)
• Knowledge of shell scripting (Bash) or automation tools
• Experience with monitoring tools and dashboards
• Familiarity with containerized database deployments (Docker, Kubernetes)
Certifications (Preferred)
• MariaDB, MySQL, or Linux administration certifications are an advantage
Education
• Bachelor's degree in Computer Science, Information Technology, or equivalent vocational training
• Comparable experience with a strong practical background is also acceptable
Language Requirements
• English: Upper Intermediate (B2)
• German: Nice to Have
Additional Information
Please note: remote working is only possible from within Hungary due to European taxation regulations.
* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.