3+ years of experience working with relational databases. Solid understanding of Linux OS fundamentals. Proficient in shell usage (e.g., less, nano, vim, grep, cd, df, top, ls). Able to use SSH to connect to remote systems using passwords and public/private keys. Understanding of system performance concepts (I/O, load, CPU, RAM, disk usage). Basic knowledge of InnoDB internals and Performance Schema. Ability to optimize MySQL queries. Experience with Percona Toolkit or similar tools. Deep understanding of replication models, including GTID-based replication. Skilled at troubleshooting issues in MySQL environments. Knowledge of backup and high-availability (HA) solutions and strategies. Familiarity with virtually synchronous replication technologies such as PXC and InnoDB Group Replication. Strong written communication skills in English. Ability to write clear, concise technical reports and documentation. Effective interpersonal skills to collaborate with internal teams and customers. Able to explain complex technical concepts to both technical and non-technical stakeholders.