Database Administrator

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Job Summary

We are seeking an experienced Database Administrator (DBA) to manage,   maintain , and   optimize   MariaDB, PostgreSQL, and Cassandra   database platforms. The ideal candidate will ensure high availability, performance, security, and scalability of databases supporting mission-critical applications.

Key Responsibilities

Database Administration :

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Install, configure, upgrade, and maintain   MariaDB, PostgreSQL, and Apache Cassandra   databases

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Perform database capacity planning, performance tuning, and optimization

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Monitor database health, replication, clustering, and availability

Backup, Recovery & High Availability :

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Design and manage backup and recovery strategies (logical & physical backups)

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Implement and manage replication, clustering, and failover solutions

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Perform disaster recovery planning and regular DR drills

Security & Compliance :

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Manage database security: users, roles, privileges, encryption, and auditing

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Apply security patches and upgrades in compliance with company policies

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Ensure compliance with data protection and regulatory standards

Performance & Troubleshooting :

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Diagnose and resolve database performance issues and outages

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Analyze slow queries, locks, and resource bottlenecks

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Provide root cause analysis (RCA) for incidents

Automation :

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Automate routine DBA tasks using scripts (Shell, Python, etc.)

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Support containerized and cloud-based database deployments (if applicable)

Documentation & Support :

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Maintain database documentation, SOPs, and operational runbooks

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Provide on-call support for production database environments

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Assist   developers with schema design, indexing, and query optimization

Required Skills & Qualifications :

Technical Skills :

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Strong hands-on experience with   MariaDB / MySQL ,   PostgreSQL , and   Apache Cassandra

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Expertise   in:

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Replication & clustering (Galera, PostgreSQL streaming replication, Cassandra clusters)

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Backup & recovery tools ( mysqldump ,   pg_dump ,   pg_basebackup ,   nodetool , etc.)

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Performance tuning and query optimization

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Experience with Linux systems and shell scripting

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Knowledge of monitoring tools (Prometheus, Grafana, Zabbix, Nagios, etc.)

Database Concepts :

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ACID vs BASE principles

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OLTP and distributed database architectures

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Data modeling for relational and NoSQL databases