The primary job role of a Senior Database Administrator (DBA) includes overseeing the management, maintenance, and optimization of databases within the organization. Works on strategic initiatives to align the database infrastructure with long-term business goals and ensures that best practices in database management are consistently followed.

Main duties/responsibilities

Optimize database queries to ensure fast and efficient data retrieval, particularly for complex or high-volume operations.
Design and implement effective indexing strategies to reduce query execution times and improve overall database performance.
Monitor and profile slow or inefficient queries and recommend best practices for rewriting or re-architecting queries.
Continuously analyze execution plans for SQL queries to identify bottlenecks and optimize them.
Database Maintenance: Schedule and execute regular maintenance tasks, including backups, consistency checks, and index rebuilding.
Health Monitoring: Implement automated monitoring systems to track database performance, availability, and critical parameters such as CPU usage, memory, disk I/O, and replication status.
Proactive Issue Resolution: Diagnose and resolve database issues (e.g., locking, deadlocks, data corruption) proactively, before they impact users or operations.
High Availability: Implement and manage database clustering, replication, and failover strategies to ensure high availability and disaster recovery (e.g., using tools like SQL Server Always On, Oracle RAC, MySQL Group Replication).
Capacity Planning: Monitor resource consumption and plan for growth to ensure the database can scale effectively with increasing data volume and transaction load.
Resource Optimization: Analyze and optimize resource usage (CPU, memory, disk, network) to reduce operational costs.
Licensing Management: Ensure that database licensing models are properly adhered to and identify opportunities for reducing licensing costs.
Cloud Cost Management: Use cost analysis tools (e.g., AWS Cost Explorer, Azure Cost Management) to monitor and optimize cloud database spend, identifying opportunities for right sizing or reserving instances.

Experience

5 to 7 years of experience in Microsoft SQL Server administration

Qualifications

Bachelors degree in computer science, software engineering or a related field
Microsoft SQL certifications (MTA Database, MCSA: SQL Server, MCSE: Data Management and Analytics) will be an advantage.

Technical skills

Experience in MySQL, PostgreSQL, and Oracle database administration.
Exposure to Data Lake, Hadoop, and Azure technologies
Exposure to DevOps or ITIL

Behavioral competencies

Communication
Teamwork
Digital Mindset
Operational Excellence
Analytical Ability
Customer Centricity
Business and Market Acumen
Empathy
Growth Mindset

Senior Database Administrator - Oracle / SQL