Database Administrator (DBA)

Connect with us to connect the world.

Are you prepared to join the R&D team at 12Go and help us build the leading online travel platform, providing seamless booking experiences for travelers worldwide? 

12Go, being a part of Travelier group, offers a wide range of transportation options, including trains, buses, ferries, and flights, to help customers travel conveniently and affordably. Our vision is to enable any customer to instantly book any route in the world.

In our R&D department you will get to work on groundbreaking solutions that reshape how people explore the world, using a modern tech stack and following top industry standards to ensure security, scalability, and a reliable travel experience. You will thrive in a collaborative culture where passionate colleagues love sharing ideas, and your work will have a real impact on our users' travel adventures. 

We are looking for an experienced Database Administrator to own and operate our multi-engine database infrastructure across self-hosted and AWS RDS environments. You will be the primary expert for database reliability, performance, migrations, and disaster recovery. This is a hands-on engineering role - not a management position.

Join us in crafting this exciting journey, where your contribution will be key to our success!

Responsibilities:
Replication & High Availability
-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.

Performance & Reliability
-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.

Schema Migrations & Release Process
-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.

Backup & Disaster Recovery
-Implement and verify backup strategy: logical + physical, with tested restore procedures;
-Maintain point-in-time recovery capability for all critical databases.

Security & Compliance
-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.

Documentation & Knowledge Sharing
-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.