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At Cognizant we have an ideal opportunity for you to be part of one of the largest companies in the digital sector worldwide.
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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 Linux environments including log analysis, file management, and Shell/Python based automation
Support SDE/ArcGIS geodatabase environments hosted on Aurora PostgreSQL
Maintain documentation and runbooks for database operations and incident resolution
Perform minor and major Aurora PostgreSQL version upgrades including pre-upgrade assessments, snapshot backups, parameter group validation, extension compatibility checks, and post-upgrade monitoring
Coordinate and document all upgrade activities through ServiceNow change requests with rollback plans and CAB approval
Required Skills
Strong understanding of PostgreSQL architecture — WAL, MVCC, autovacuum, connection pooling, replication slots and partitioning
Hands‐on experience with AWS DMS — troubleshooting task failures, CDC replication issues, and supporting app teams through migration challenges
Proficiency with AWS CloudFormation for infrastructure-as-code
Experience with Amazon CloudWatch — dashboards, metrics, log insights, and alarm configuration
Familiarity with AWS CloudTrail for auditing API activity and compliance
Solid knowledge of PostgreSQL security — roles, schemas, privileges, and access control
Experience with ServiceNow for incident management, change requests, and ITSM workflows
Comfortable working in Linux environments — log parsing, shell scripting, file operations, and CLI-based database administration
Ability to write PL/pgSQL, dynamic SQL, and maintenance automation scripts
Good to Have
Familiarity with SDE/ArcGIS geodatabases on PostgreSQL
Knowledge of logical replication setup (publications, subscriptions)
Experience working with CyberArk Vault
Soft Skills
Strong communicator — able to guide and advise application teams clearly during incidents
Comfortable working within formal change advisory (CAB) processes
Self-driven and capable of managing multiple concurrent support requests independently
Why Cognizant?
Improve your career in one of the largest and fastest growing IT services providers worldwide
Receive ongoing support and funding with training and development plans
Have a highly competitive benefits and salary package
Get the opportunity to work for leading global companies
We are committed to respecting human rights and build a better future by helping your minds and the environment
We invest in people and their wellbeing.
We create conditions for everyone to thrive.
We do not discriminate based on race, religion, color, sex, age, disability, nationality, sexual orientation, gender identity or expression, or for any other reason covered.
Igualdad de Empleo y Política de Acción Afirmativa:
Cognizant es un empleador que ofrece igualdad de oportunidades.
Todos los solicitantes calificados recibirán consideración para el empleo sin distinción de sexo, identidad de género, orientación sexual, raza, color, religión, origen nacional, discapacidad, estado de veterano protegido, edad o cualquier otra característica protegida por la ley.
At Cognizant we believe than our culture make us stronger!
#BeCognizant #IntuitionEngineered
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