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 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.

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.

Administer and optimize on-premises and Azure SQL Server databases; support Microsoft Dynamics GP and Business Central finance systems; manage Salesforce CRM, reporting (SQL Report Builder), integrations and public websites (Umbraco); provide application support (.NET MVC, SharePoint, MS Teams, Power Apps) and assist with ticketing/SaaS platforms (Shopify, Siriusware).

Owner of SQL Server infrastructure modernization: lead deployments, automation (Terraform/Ansible), design resilient Availability Groups/FCI, implement backup/DR strategies, automate pipelines with PowerShell, leverage AI-driven tuning, monitor performance, mentor team members, support 24/7 on-call and after-hours change management across Canada/US environments.

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.

Provide production support and administration for MS SQL/Azure SQL databases (including 40TB+ and Hyperscale). Troubleshoot performance using Query Store and Dynatrace, perform tuning, capacity planning, migrations, and automation. Collaborate with developers, DB engineering, security, and vendors; support projects, upgrades, and 24x7 operational support.

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.

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 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.

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.

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.

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.

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.