Senior Database Administrator Job at Randstad (Toronto)

Job Description

We are seeking a highly accomplished and multi-faceted Senior Database Administrator for an enterprise-level contract opportunity based out of Toronto or Kingston. In this role, you will take on a premier technical capacity within the database engineering and data operations streams, specializing in the design, implementation, administration, and performance optimization of enterprise-scale data infrastructure. As a principal data guardian, you will bridge the gap between legacy data systems and modern cloud-native architectures. Operating entirely onsite, you will evaluate system capacity, manage complex cloud services, construct robust physical database designs, and establish automated data distribution pathways. This role is ideal for a senior technical leader who can independently engineer secure, scalable, and high-performance relational, transactional, and data warehouse structures.

Job Responsibility

Formulate physical database designs, install, configure, migrate, and administer enterprise-tier database management systems (DBMS)
Oversee cloud data repositories, virtual machines, disks, key vaults, and multi-cloud database environments, ensuring high reliability across infrastructures
Design, construct, and fine-tune secure, automated data pipelines extending from primary source environments down to end-user presentation tiers
Conduct advanced database troubleshooting, analyze system wait statistics, execute input/output (IO) analyses, and deploy query optimization and indexing strategies
Act as a central subject matter expert on data warehouse architectures, executing upgrades, multi-node configurations, cloning, and tech-stack expansions
Direct long-term storage growth forecasting, capacity planning, resource sizing, and platform life-cycle management for mission-critical setups
Enforce cloud authorization models, configure role-based access controls (RBAC), manage key systems, and apply transparent data encryption (TDE) alongside data masking protocols
Manage environment patches, maintenance packs, and system releases following strict Information Technology Infrastructure Library (ITIL) aligned configuration management procedures
Research, isolate, and implement active cybersecurity remediations, checking firewall rules and network security boundaries to mitigate platform threats
Function as a premier senior technical authority, providing architectural alignment, technical blueprints, and operational mentorship to cross-functional engineering teams

Requirements

7 to 10+ years of progressive experience in Database Administration
Deep technical mastery administering cloud database environments, with an explicit focus on Azure SQL Database, Azure SQL Managed Instance, and SQL Server on Azure Virtual Machines
Hands-on experience provisioning and managing cloud-native data services, including virtual networks, private endpoints, cloud storage, Databricks Lakehouses, and Azure Data Factory
Expert knowledge of performance tuning tools, including Azure SQL Query Store analysis, Intelligent Performance features, TempDB optimization, and mitigating cloud throttling thresholds
Strong background in Unix and Linux operating systems, shell scripting, database query languages, and distributed architectures (such as multi-node Oracle RAC configurations, Oracle EBS R12.2, Data Guard, or WebLogic setups)
Solid understanding of enterprise information management principles, data classification frameworks, and database auditing routines
Proven experience ensuring full database system alignment with public-sector regulatory obligations and health information privacy mandates (such as PHIPA/PHIPPA)
Practical experience running data operations under structured Incident, Change, and Configuration Management governance models
Superior critical thinking and evaluative skills to decompose performance bottlenecks, execute impact analyses, and establish automatic tuning rules
Excellent written, verbal, and presentation communication skills, with polished ease when explaining complex database trade-offs to business partners and technology squads
Highly organized, detail-oriented team player with a history of meeting strict deployment targets within fast-paced environments

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Senior Database Administrator

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