What does a Database Administrator (DBA) do?

A DBA keeps an organization's databases available, fast, and secure. They handle installation and patching, design backup and recovery plans, tune performance, and manage access and replication. In short, they are responsible for making sure critical data is never lost and always accessible.

What are the main responsibilities of a Database Administrator (DBA)?

Core duties include backups and disaster recovery, performance and query tuning, and managing security and access. DBAs also configure high availability and replication, plan capacity, respond to incidents, and support schema changes and migrations with minimal downtime.

What skills does a Database Administrator (DBA) need?

Deep SQL knowledge and hands-on expertise with a major database engine are essential, along with experience in backup, recovery, and performance tuning. Strong troubleshooting instincts and scripting for automation round out the profile, since much of the job is preventing problems before they happen.

What should a Database Administrator (DBA) job description include?

A clear DBA job description states the definition and brief, then lists key responsibilities, full duties, and required experience. Naming your database engines, whether workloads are on-premise or cloud, and your availability requirements helps candidates judge fit accurately.

Who does a Database Administrator (DBA) work with?

DBAs work closely with backend engineers, data engineers, and DevOps or platform teams who depend on the databases. They also coordinate with security and compliance teams, and act as an escalation point during incidents that affect data-backed systems.

Data & AI

Database Administrator (DBA) Job Description

Data Analyst Data Scientist Machine Learning Engineer Data Engineer Business Analyst AI Engineer Data Architect Business Intelligence (BI) Analyst MLOps Engineer

About the role

We are seeking a Database Administrator (DBA) to own the health, performance, and security of our production databases. You will handle everything from backups and recovery to query tuning, replication, and capacity planning, making sure critical systems stay fast and never lose data. This role suits a methodical, calm-under-pressure engineer who takes pride in uptime and treats data integrity as non-negotiable.

Key responsibilities

Ensure database availability, backups, and disaster recovery
Tune queries, indexes, and performance at scale
Secure data and manage access and compliance

Responsibilities

Install, configure, and patch database systems such as PostgreSQL, MySQL, SQL Server, or Oracle
Design and test backup and disaster recovery procedures with defined RPO and RTO targets
Monitor performance and tune slow queries, indexes, and execution plans
Configure and maintain replication, clustering, and high-availability setups
Manage user access, roles, and permissions following least-privilege principles
Plan capacity and forecast storage, memory, and connection growth
Automate routine maintenance such as vacuuming, reindexing, and statistics updates
Respond to database incidents, run root-cause analysis, and prevent recurrence
Support schema changes and migrations with minimal downtime
Implement encryption, auditing, and controls to meet security and compliance requirements

Requirements

Bachelor's degree in computer science, information systems, or equivalent practical experience
4 or more years administering production databases
Deep expertise in at least one major database engine such as PostgreSQL, MySQL, SQL Server, or Oracle
Proven experience with backup, recovery, replication, and performance tuning under real load
Strong SQL skills and familiarity with scripting for automation, for example Bash or Python

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