Full-time jobs in Vaughan, Ontario

Find full-time jobs in Vaughan, Ontario and nearby towns within 25 km. Read the full details and apply.

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Within 25 km of Vaughan

Added 10 hours ago
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Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!

Senior Database Administrator (Oracle Application DBA / Cloud)

Toronto, ON, Canada

Full-time

Within 25 km of Vaughan · About 22.9 km from the city centre

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Job details

Job type: Full-time
Apply by: Dec 4, 2026
Posted: Nov 3, 2026

Original job description

Senior Oracle Application DBA

Role Overview

We are seeking an experienced Senior Oracle Application DBA to optimize, scale, and maintain mission-critical database applications. This role partners closely with development and engineering teams to ensure high availability, optimal SQL/PL-SQL performance, and smooth database operations, while helping drive database modernization and cloud migration initiatives.

Key Responsibilities

Collaborate with application development teams on data modeling, schema design, and deployment of complex PL/SQL packages, procedures, triggers, and views.
Analyze execution plans, perform SQL query tuning, and optimize index structures to eliminate bottlenecks in high-throughput transactional environments.
Lead database release automation, code reviews, and schema migrations across development, staging, and production environments.
Monitor database application health, identify lock contention, resolve deadlocks, and troubleshoot latency issues.
Partner with infrastructure and cloud teams to design, test, and execute on-premises to AWS cloud database migrations.
Participate in database capacity planning, failover drills, and disaster recovery design.

Required Qualifications & Skills

Oracle Application DBA Expertise: 8+ years specializing in Oracle Database (12c/19c+) application support, advanced PL/SQL programming, execution plan analysis, and performance diagnostics (AWR, ASH, ADDM).
AWS & Cloud Databases: Practical experience administering managed database services, including Amazon RDS (Oracle/PostgreSQL) and Amazon Aurora.
PostgreSQL: Hands-on working knowledge of PostgreSQL architecture, schema design, and performance optimization.
Cloud Migration Experience: Strong, proven track record of migrating on-premises databases to AWS environments using tools such as AWS DMS, SCT, or native utilities.
Collaboration & Release Management: Solid background in CI/CD integration for database deployments and working alongside Agile engineering teams.

Nice-to-Have Qualifications

Experience with Oracle Exadata administration and performance tuning features (Smart Scan, Hybrid Columnar Compression).
Proficiency in shell scripting (Bash) and automation using Python.
Relevant AWS (e.g., AWS Certified Database – Specialty) or Oracle certifications.

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More about this job

Responsibilities

Optimize and maintain Oracle database applications, including schema design, PL/SQL development, SQL tuning, release automation, and troubleshooting performance and availability issues. Collaborate with infrastructure and cloud teams on AWS database migrations, capacity planning, failover testing, and disaster recovery.

Requirements

Requires 8+ years of Oracle Database application administration experience, including advanced PL/SQL, performance diagnostics, and SQL tuning. Candidates should also have practical experience with AWS managed databases, PostgreSQL, on-premises-to-AWS migrations, and database CI/CD; Exadata, Bash, Python, and relevant certifications are advantageous.

Skills

Oracle Database Administration
PL/SQL
SQL Performance Tuning
Execution Plan Analysis
AWR, ASH, and ADDM
Amazon RDS
Amazon Aurora
PostgreSQL
AWS Database Migration
AWS DMS
AWS SCT
Database CI/CD
Schema Design
Database Release Management
Disaster Recovery
Bash

Visa sponsorship

Not detected in the job text

Keywords

Oracle Database 12c
Oracle Database 19c
Oracle Application DBA
PL/SQL
SQL Query Tuning
Execution Plans
AWR
ASH
ADDM
Amazon RDS
Amazon Aurora
PostgreSQL
AWS DMS
AWS SCT
Cloud Migration
Database CI/CD
Schema Design
Database Release Automation
Database Capacity Planning
Failover
Disaster Recovery
Oracle Exadata
Smart Scan
Hybrid Columnar Compression
Bash
Python
Agile
AWS Certified Database Specialty

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