Russell Tobin & Associates is hiring on behalf of one of its esteemed clients.

Job ID: 26-20132

Job Title: Database Administrator - Senior

Location: Toronto, ON (Onsite)

Duration: 190 Business Days with possible extension

Client: Public Sector

Pay Rate: CAD $80 per hour

Role Overview
This role is for a Senior Database Administrator responsible for managing, optimizing, and supporting enterprise Oracle and SQL Server databases across both on-premises and cloud environments. The successful candidate will design, configure, migrate, secure, and maintain database infrastructure, ensuring high availability, performance, scalability, and disaster recovery. The role also involves leading Oracle database migration initiatives, providing technical expertise during solution design, troubleshooting complex database issues, and supporting mission‑critical production systems.

The ideal candidate will have extensive experience with Oracle 12c/19c, SQL Server, PL/SQL, ETL development, RAC, Data Guard, GoldenGate, and database performance tuning , along with hands‑on experience with installation, upgrades, backup and recovery, capacity planning, and cloud platforms such as Azure and Oracle Cloud Infrastructure (OCI) . The position also includes supporting Siebel applications, developing ETL processes, implementing database security controls, and ensuring compliance with enterprise security, privacy, and information management standards.

In addition to strong technical expertise, the role requires excellent analytical, troubleshooting, and communication skills, with the ability to lead complex migration projects, document technical solutions, assess and mitigate technical risks, and collaborate with cross‑functional teams to deliver secure, reliable, and high‑performing database solutions.

Must Have:

10+ years of proven experience in database administration,



including database design, implementation, maintenance and support

5+ years of experience in PL/SQL, creating data ETL procedures (very strong) and packages, and query optimization techniques

Hands‑on experience with DBMS operations such as installation, configuration, migration, and upgrades

Strong knowledge of performance tuning, optimization, and capacity planning

Experience with one Oracle and SQL Server

Experience working with On‑Prem and Cloud Technologies such as Azure and OCI Platforms.

Experience with RAC, Golden Gate, Data Guard Technologies.

Experience with information retrieval tools and query languages such as TOAD, OEM and DB Artisan

Role and responsibilities.

Creates and implements physical database designs and operates and administers the database management system (DBMS) including database optimization, capacity planning, installation and migration, database design, performance tuning, backup and recovery.

Database optimization, capacity planning, installation and migration, database design, performance tuning, backup and recovery.

Maintain and monitor a number of Oracle 12c and above databases in large multi‑tenant environments including database administration, maintenance, optimization, migration, and fine tuning of databases

Design, build and configure Oracle Database Servers on Windows, Solaris, Linux

Ensure existing databases meet performance requirements including but not limited to SIEBEL, ARCGIS,



APEX databases on Oracle

Ensure that all deployed databases are secure and that appropriate security and auditing controls are in place to meet security and privacy requirements

Provide database administration technical expertise during design and architecture phases of recent solutions

Lead and design solutions for enterprise Oracle migration project to migrate to 19c

Plan, manage and coordinate implementation of technically advanced complex systems and assist in Data refreshes to lower non‑production environment

Provide regular support to resolve complex and unique database management issues

Provide expert support and guidance to production database systems and clients by overseeing the deployment and evaluation of complex Oracle databases

Provide support and maintenance of databases in GoCloud and on premise‑based environments

Carry out complex/specialized systems analysis and design for success of Oracle migration

Implement and Configure TDE, Dataguard, RAC, OMS, OEM 13c and Oracle Golden Gate

Provide assistance with replicated database management and migration

Documentation of your technical work such that knowledge can be transferred to you colleagues

Identifies, analyses, prioritizes and communicates technical risks for decision makers

Provides recommendations and mitigation strategies based on a detailed evaluation of technical risks and issues

Communicates effectively to identify needs and evaluate solutions to complex business and technical issues

Work with Siebel Application developers collaboratively and deploy SIEBEL solution patches and upgrades.

Develop, Maintain and Support ETL process to facilitate transfer of data from SIEBEL database to other staging databases for consumption.

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📌 Database Administrator (Ontario)
🏢 Russell Tobin
📍 Ontario