Full-Time Senior Database Administrator

Senior Database Administrator

SummaryThe Wikimedia Foundation is seeking a Senior DBA. We persist most of this knowledge in MariaDB. Our project sites are some of the most highly visited on the internet.As a Senior DBA, you will be responsible for ensuring the health of our database systems - including availability and performance. Responsibilities include troubleshooting, database maintenance, performance tuning, high availability, replication, backups, optimization, benchmarking and testing new MariaDB and MySQL builds.

Responsibilities

• Implementation, maintenance and troubleshooting of relational database systems in production and staging environments
• Handling database version upgrades, testing and working with upstream on bug identification and resolution
• Configuring replication, designing schema optimizations and running schema changes
• Monitoring, debugging and improving query performance
• Improving observability (alerting, metrics, monitoring) of database infrastructure
• Multi-datacenter replication topology design, capacity and infrastructure planning
• Taking part in incident response, diagnosis and follow-up on system outages or alerts
• Sharing our values and work in accordance with them

Qualifications

• Advanced experience with MariaDB or MySQL database administration, replication topologies at scale
• Knowledge of Linux and IO/data storage concepts, internals and troubleshooting
• Proficiency in SQL
• Experience with debugging query performance and schema design
• Experience with MySQL high availability and replication management tooling
• Experience with remotely managing bare-metal servers
• 5+ years experience in a hands-on DBA role as part of a team
• Experience with high traffic and highly available website architectures and operations
• Strong English language skills
• Ability to work independently in a fast-paced environment

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