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Database Administrator (MySQL/MariaDB, Cassandra) _ Work location - Ukraine
Role Description :
As a Database Administrator, you will be responsible for administration and support of production database systems, primarily MariaDB environments.
Main responsibilities:
· Administration and support of MariaDB Galera Cluster and Master–Slave replication
· Ensuring database availability, stability, and performance
· Backup, recovery, upgrades, and routine maintenance
· Monitoring databases using Zabbix and working together with L1/NOC engineers
· Incident analysis and participation in troubleshooting
Additional responsibilities (non-primary):
· Observing and assisting with Cassandra and Percona XtraDB Cluster
· Supporting colleagues with database-related questions and tasks
Requirements
Must have:
· 3+ years of experience as a Database Administrator
· Solid understanding of MySQL/MariaDB
· Basic to intermediate SQL knowledge and database internals expected at this level
· Experience with Linux and shell scripting
· Understanding of replication, backups, and performance basics
Nice to have:
· Hands-on experience with Galera Cluster in production environments
· Experience with database proxies (MaxScale, ProxySQL, HAProxy)
· Understanding of high availability and failover mechanisms
· Experience with performance tuning (indexes, query optimization, configuration tuning)
· Experience working with large databases and high-load systems
· Practical knowledge of backup strategies (logical vs physical, PITR)
· Experience with monitoring and alert tuning (Zabbix triggers, thresholds, false positives)
· Experience interacting with L1/L2 support teams and handling escalations
· Basic understanding of NoSQL concepts and Cassandra architecture
· Experience with Percona XtraDB Cluster is a plus
· Familiarity with Docker for running databases or related tools
· Experience with configuration management / automation tools (Ansible preferred)
· Understanding of change management and planned maintenance procedures
· Ability to participate in incident post-mortems and root cause analysis (RCA) Tech Stack (brief)
· Databases: MariaDB, MySQL, Cassandra
· Clustering & HA: Galera Cluster, Master–Slave
· Monitoring: Zabbix, Kibana/Elastic
· OS and HW: Linux, BareMetal, VMware
Working Conditions (brief)
· Remote work
· Standard working schedule
· Planned maintenance work paid as overtime
· On-call rotation