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Epsilon Solutions Ltd.

Senior Oracle Application Database Administrator

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 3, 2026
Posting language: English
Posted: Nov 3, 2026

Original job description

Title: Senior Database Administrator

Location: Toronto, ON (Hybrid)

Terms: Full Time

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 our database modernization and cloud migration strategy.

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 mission-critical Oracle application databases, including PL/SQL development, SQL tuning, release automation, schema migrations, and troubleshooting performance and availability issues. Collaborate with development, infrastructure, and cloud teams on AWS migrations, capacity planning, failover testing, and disaster recovery.

Requirements

Requires 8+ years of Oracle application DBA experience, including advanced PL/SQL, performance diagnostics, and Oracle Database support. Candidates should also have practical AWS managed database and PostgreSQL experience, a proven record of migrating databases to AWS, and familiarity with CI/CD and Agile teams.

Skills

Oracle Database Administration
PL/SQL Programming
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 And Python Automation

Visa sponsorship

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Keywords

Oracle Database
Oracle 12c
Oracle 19c
PL/SQL
SQL Tuning
Execution Plans
AWR
ASH
ADDM
Amazon RDS
Amazon Aurora
PostgreSQL
AWS
AWS DMS
AWS SCT
Cloud Migration
Schema Design
Data Modeling
Database CI/CD
Agile
Database Release Automation
Schema Migration
Lock Contention
Deadlock Troubleshooting
Capacity Planning
Failover
Disaster Recovery
Oracle Exadata
Bash
Python

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