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.

Senior Database Administrator responsible for designing and optimizing data pipelines, creating physical database designs, and administering DBMS (installation, migration, performance tuning, capacity planning, backup and recovery). Serves as a data-warehouse/OBIEE subject-matter expert and performs Cloud DB/DevOps/DataOps, Oracle E-Business Suite administration, RAC/Data Guard operations, and Linux/UNIX database migrations.

Lead administration and optimization of Corrigo CMMS across client accounts. Configure system settings, manage data integrity, develop reports and analytics, advise clients, handle change requests, deliver training, support integrations/APIs, and implement process improvements to maximize CMMS value for facility management operations.

Senior Database Administrator with 10+ years experience responsible for database optimization, capacity planning, installation/migration, design, performance tuning, backup and recovery. Maintain and monitor Oracle 10g/11g/12c/19c in large multi-tenant environments and migrate end-of-life Oracle databases to current supported versions in on-premise and cloud data centers.

Maintain, tune, secure, and support enterprise RDBMS platforms (Oracle, SQL Server) for clinical systems. Implement HA, backup/recovery, disaster recovery, performance tuning, security auditing, and support EMR/clinical application upgrades. Collaborate with application, infrastructure, and analytics teams and provide on-call support in a 24/7 hospital environment.

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.

Senior Oracle DBA responsible for physical database design, administration, optimization, capacity planning, installation/migration, performance tuning, backup/recovery, and leading enterprise migrations to Oracle 19c across Windows, Solaris, and Linux environments.

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.

Senior Database Administrator responsible for database design, implementation, maintenance and support. Develop PL/SQL and ETL procedures, optimize queries and performance, and perform DBMS installation, configuration, migration and upgrades. Work with Oracle and SQL Server on on-prem and cloud (Azure, OCI) platforms, including RAC, GoldenGate and Data Guard; use tools like TOAD, OEM and DB Artisan.

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.

Administer and support Oracle middleware and database environments (DEV/QA/UAT/Prod), including WebLogic, Fusion Middleware, OHS, and Oracle Database 19c/23c. Perform deployments, patching, performance tuning, backup/recovery, security configuration, and provide L2/L3 24x7 production support. Support integrations, REST/SOAP services, RAC/Data Guard environments, and compliance activities.

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.

Part-time contractor responsible for database maintenance, advanced Excel data manipulation and reporting, CRM management, KPI development, data visualization, and consulting with executives to improve processes and present findings.

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.

As a DBA Engineer, you'll optimize database performance, troubleshoot issues, and handle SQL Server administration tasks, collaborating with teams to enhance data architecture and efficiency.

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.

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.

Lead and optimize enterprise Oracle databases for performance, availability, and security. Own backup/recovery and high‑availability strategies, troubleshoot complex incidents, collaborate with SRE/cloud/application teams, enable on‑prem to cloud migrations, and drive automation and monitoring improvements.

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

Lead Oracle database migration and modernization efforts across on-prem and cloud environments. Design, implement, and tune multi-tenant Oracle databases (10g-19c+), configure advanced features (Data Guard, RAC, TDE, OEM), perform backup/recovery, troubleshoot complex issues, ensure security/compliance, and document/transfer knowledge to stakeholders.