Own MariaDB replication topology;
Design and execute GTID migration plan across self-hosted and RDS instances;
Monitor and maintain replica lag across all replicas;
Define and test failover and switchover runbooks.
Continuously audit slow query logs across all three engines;
Tune engine parameters for workload characteristics;
Set up and own PMM or equivalent observability stack for DB metrics.
Define and enforce safe schema migration procedures (online DDL, pt-online-schema-change);
Integrate migration steps into CI/CD pipeline; enforce no-deploy-before-migration policy;
Maintain migration history and rollback procedures for every schema change.
Implement and verify backup strategy: logical + physical, with tested restore procedures;
Maintain point-in-time recovery capability for all critical databases.
Manage database users, roles, and access policies (principle of least privilege);
Audit and rotate credentials on schedule; integrate with secrets management;
Ensure data-at-rest and in-transit encryption is in place and documented.
Write and maintain runbooks for every database: failover, restore, migration, scaling;
Conduct internal knowledge transfer sessions with the DevOps team;
Participate in on-call rotation for database-related incidents.

MariaDB
3+ years: replication, GTID, binlog, InnoDB tuning, Mariabackup, Percona Toolkit.
Replication migration
Has done position → GTID migration in production.
AWS RDS
Knows RDS limitations vs self-hosted; parameter groups, snapshots.
Performance tuning
Can read EXPLAIN, identify bad indexes, fix slow queries independently.
Backup & DR
Designed and tested restore procedures; knows xtrabackup / mariabackup.
Schema migrations
Used pt-osc or gh-ost; understands locking implications.
Monitoring
Set up Prometheus + Grafana or PMM for database metrics.
Linux / Shell
Comfortable with bash, systemd, log analysis.
Docker
Runs DB in containers for dev / staging; understands volume management. Nice to Have:
ClickHouse
MergeTree, partitions, materialized views, query profiling.
MongoDB
Replica sets.
Terraform / IaC
Managing RDS instances via Terraform.
Python or Go
Automation scripts, custom monitoring exporters.

-Engaging work on a product that enables millions of travelers to book their trips daily; -Full-time remote working

5 days week, 8 hours per day; -Development opportunities (budget for self-paced learning, global training workshops, online English language classes, e-learning platforms); -Internal growth and internal mobility opportunities; -Competitive annual leave, sick leave, and public holidays; -Annual company offsite in Thailand. What should I do to dive into 12Go company culture?

Database Administrator, DBA

Key skills