Database Administrator – DBA

Responsibilities

• Administer production databases on AWS RDS — MySQL, PostgreSQL, MS SQL Server
• Design and maintain HA / DR architectures: replication, Multi-AZ, read replicas, failover, backups
• Tune performance — query optimization, indexing, execution plans, parameter groups
• Capacity planning, sizing, and cost optimization across the database fleet
• Manage schema changes and migrations safely in production
• Monitor database health with Prometheus / Grafana / CloudWatch; tune alerting
• Lead incident response for database outages, performance issues, and data integrity events
• Implement and enforce security controls — encryption, access management, auditing, secrets rotation
• Partner with developers on data modeling, query reviews, and access patterns
• Automate routine work — backups, patching, provisioning — using IaC
• Document standards, runbooks, and recovery procedures
• Participate in on‑call rotation

Qualifications

• 4+ years as a DBA or database‑focused engineer in production environments
• Strong hands‑on experience with AWS RDS (and ideally Aurora)
• Deep expertise in at least two of: MySQL, PostgreSQL, MS SQL Server
• Advanced SQL — query tuning, execution plans, stored procedures, window functions
• Solid understanding of replication, backups, point‑in‑time recovery, and HA / DR patterns
• Experience with database security — IAM, encryption (KMS), TLS, auditing
• Schema design and migration experience in high‑availability environments
• Experience with ClickHouse
• Scripting in Python, Bash, or PowerShell for automation
• Linux fundamentals and networking basics