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Job Description: PostgreSQL Database Administrator

About The Role

We are seeking an experienced PostgreSQL Database Administrator to support and maintain enterprise AWS database infrastructure. This role is primarily support and advisory in nature — working closely with application teams to troubleshoot issues, implementing changes, guide migrations, and ensure database stability. The ideal candidate brings deep PostgreSQL architecture knowledge, hands-on AWS experience, and strong operational discipline.

Key Responsibilities

Administer and maintain PostgreSQL and RDS PostgreSQL instances across dev, test, QA, and production environments




Support application teams in troubleshooting database issues, replication failures, connectivity problems, and performance degradation
Assist app teams in resolving AWS DMS issues including task failures, CDC lag, table errors, and cutover coordination
Deploy and manage database infrastructure using AWS CloudFormation templates
Monitor database health, set up alarms, and analyze logs using Amazon CloudWatch and CloudWatch Log Insights
Audit database activity and support compliance reviews using AWS CloudTrail
Troubleshoot and resolve logical replication issues including lag, slot bloat, and subscription failures
Manage roles, users, schemas, and privileges across multiple databases and environments
Tune query performance using execution plans, auto_explain, parameter group optimization, and session management
Raise, track, and resolve incidents and change requests through ServiceNow (ITSM)
Perform DBA operations on

📌 Postgres SQL Database Administrator (Ciudad de México)
🏢 Cognizant
📍 Ciudad de México