Top Database Administrator Jobs in Toronto

Administers enterprise Oracle and SQL Server databases across on-premises and cloud environments. Responsibilities include database design, backups, recovery, high availability, performance tuning, security, auditing, patching, disaster recovery, and clinical application support. The role collaborates with application, infrastructure, reporting, analytics, and clinical teams, provides 24/7 on-call support, documents procedures, and explores AI-driven database optimization.

Provides production database administration and support across Oracle RDS, Aurora PostgreSQL, and Microsoft SQL Server in AWS environments. Responsibilities include incident response, performance tuning, troubleshooting, security hardening, monitoring, backup and recovery, schema changes, ticket management, documentation, and collaboration with application and infrastructure teams. The role supports highly available customer-facing databases and contributes to automation, compliance, reliability, and continuous operational improvement.

Supports MySQL databases, Linux servers, and AWS infrastructure for high-volume gaming platforms. Responsibilities include database administration, monitoring, backups, restores, disaster recovery, replication, patching, performance troubleshooting, production support, and collaboration with development, QA, DevOps, infrastructure, and security teams. The role participates in an on-call rotation after training.

Serve as the primary DBA contact for critical production issues across customized, multi-tenant SQL Server environments. Diagnose performance and availability problems, optimize queries and stored procedures, monitor database health, build alerting and runbooks, maintain test-environment readiness, review database-related code changes, perform backups and patching, and document operational procedures. Collaborate closely with developers while providing production support during US business hours.

Senior Oracle APEX and Database Administrator responsible for design, administration, performance tuning, upgrades, backup/recovery, and lifecycle management of Oracle databases and APEX/ORDS environments across DEV/QA/PROD. Provide Tier 3 support, automation, CI/CD contributions, and coordinate upgrades with cross-functional teams.

Manage, optimize, and secure large-scale databases, work with engineering teams to design and maintain high-performance database systems, and ensure data integrity and security.

As a Database Administrator at Air Apps, you will manage and optimize complex databases, ensuring performance, security, and data integrity while collaborating closely with engineering teams.

Manage and optimize Microsoft SQL Server and PostgreSQL databases on AWS (RDS/EC2), administer Snowflake, ensure performance, backups, security, and cost efficiency, support migrations from on-prem to cloud, create runbooks, and coordinate with vendors and internal teams.

The SQL DBA role involves monitoring databases, troubleshooting issues, managing user accounts, and performing daily checks. Responsibilities include adhering to SLAs and documentation, with potential for escalation to a junior DBA role.

Manage and maintain Oracle and PostgreSQL pension administration databases. Automate DB operations with shell and SQL scripts, support batch jobs and IWS scheduling, perform backups, upgrades, tuning, monitoring, incident response, and after-hours release support while collaborating with product and business teams.

Manage and optimize Sybase databases: user access and security, performance tuning, logical/conceptual database design, DBMS installation/testing, backup/recovery, capacity planning, data standards compliance, and collaborate with IT project and development teams.

Perform DB2 v9 production database administration including performance tuning, patching and upgrades. Provide problem-solving and customer-service support for database issues. Collaborate with teams and leverage familiarity with Oracle, MSSQL Server, or Sybase as needed.

The Oracle DBA will manage user accounts, review code, optimize database performance, conduct patching, and coordinate upgrades with DB vendors.