Top Database Administrator Jobs in Toronto

As a Lead Database Administrator, you will manage Supra databases on IBM mainframes, focusing on installation, performance tuning, recovery procedures, and security management while leading modernization efforts.

Administers on-premises and Azure databases, including design, optimization, performance tuning, capacity planning, backup, recovery, installation, and migration. Supports Microsoft Dynamics GP and finance systems, Salesforce CRM, reporting, ticketing platforms, SharePoint, Teams, Power Apps, websites, and third-party integrations. Partners with finance and other teams to maintain business applications and deliver database, CRM, reporting, and integration support.

Design, implement, maintain, and optimize enterprise database environments across on‑prem and cloud. Perform installations, migrations, upgrades, performance tuning, capacity planning, backup/recovery and disaster recovery. Ensure database security, policy enforcement, integrations, and support hybrid cloud migrations. Troubleshoot complex issues and contribute to architecture and operational best practices.

Administer and maintain cloud-hosted databases to ensure availability, performance, backups, security, and monitoring. Support development and operations teams for deployments, tuning, and incident response in a financial services platform.

Owns mission-critical Oracle database environments supporting Citi’s market data operations. Responsibilities include database schema and data model design, performance tuning, health monitoring with AWR, migration, masking, archival, capacity planning, replication with GoldenGate, risk controls, standards, and resolution of complex production issues. The role also provides technical guidance across engineering, DBA, application, and vendor teams while evaluating new Oracle technologies and supporting Agile delivery.

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.

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.

Part-time remote Database Administrator responsible for structuring and analyzing data, managing and optimizing databases, integrating data sources via APIs, and collaborating to deliver data-driven insights while meeting deadlines and working independently in Central Time Zone hours.

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

Primary Oracle DBA for a production RAC cluster with Data Guard standby. Own performance tuning, storage and capacity planning, patching/version management, backup/recovery, security hardening, and incident response. Lead index, execution-plan, and connection-pool optimization; support upgrades, APEX/ORDS deployment, environment refreshes, and infrastructure migration while documenting runbooks and collaborating with application and infrastructure teams.

The Senior Database Administrator will lead the management of PostgreSQL clusters, improve automation, enhance security, and support vector data platforms, partnering with teams to scale and ensure operational excellence.