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Added 2 mins ago
Senior ServiceNow Technical Consultant – ITSM / IRM
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Contract
…(Certified System Administrator) and CAD (Certified Application Developer) certifications are mandatory. Experience with IRM / GRC is highly…
Added 2 mins ago
Java Backend Developer
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Added 2 mins ago
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Added 2 mins ago
Performance Engineer
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Added 2 mins ago
Java Backend Developer + Python
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Added 3 mins ago
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Added 31 mins ago
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Added 31 mins ago
Ottawa (NCR) - Database Modeller
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10+ years (120 months) of experience as a Software Developer, Database Modeller, and/or Database Administrator within the last 15 years
Added 32 mins ago
Spécialiste des Ventes Territorial
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Added 32 mins ago
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Added 32 mins ago
Sr. Consultant, Back End Developer- Java/Microservices/System Design
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Added 32 mins ago
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Proficient in MS Office and database applications.
Added 32 mins ago
Back-end .net Developer
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Senior Data Governance Analyst
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Perform data analysis and technical assessments using database technologies and data management tools.
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Enterprise Integration Developer
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Manager, DevOps & App Support
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$105,000 to $115,000 CAD / year
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Experience supporting MuleSoft, web applications, and database technologies (SQL Server, Oracle, PostgreSQL)
Added 1 hour ago
Performance Engineer
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$60 to $70 CAD / hour
Contract
Performance Tuning & Optimization – Ability to fine-tune application, database, and infrastructure components for optimal performance.
Added 1 hour ago
Performance Test Engineer #26-23967
US Tech Solutions
Mississauga, ON
$60 to $70 USD / hour
Contract
Analyze application, database, and infrastructure performance and recommend optimization opportunities.
Added 1 hour ago
Program Manager - Connecting to Careers in Biomanufacturing & Smart Manufacturing
ACCES Employment
Brampton, ON · Mississauga, ON · Toronto, ON
Review and audit project files (hard copy client files and electronic database) to ensure proper documentation and adherence to service delivery standards

Aarorn Technologies Inc

Database Developer

Toronto, ON, Canada

Pay: $45 CAD / hour
Job type: Contract
Apply by: Mar 31, 2027
Experience: 8+ years of experience in database development, with a strong focus on Oracle, Cassandra, and Spark.
Posting language: English
Posted: Oct 2, 2026

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Original job description

Job Title: Database Developer

Location: Toronto, ON (3x onsite a week)

Employment Type: Contract

Pay Rate: CAD$45/HR INC

Key Responsibilities

Design and develop database schemas, tables, stored procedures, functions, and other database objects for Oracle, Cassandra, and Spark environments.

Develop logical and physical data models that meet business requirements and ensure data integrity, consistency, and performance.

Design, develop, and implement ETL (Extract, Transform, Load) processes to move data between different database platforms and data sources, using tools like Apache Spark, Apache NiFi, or Oracle Data Integrator.

Optimize database performance by identifying and resolving performance bottlenecks, tuning queries, and implementing indexing strategies.

Write complex SQL queries and NoSQL queries (CQL) to retrieve, manipulate, and analyze data.

Develop Spark applications using Python to process large datasets and perform data analytics.

Design and implement data warehousing solutions using Oracle, Cassandra, and Spark, following best practices for data modeling, ETL, and reporting.

Implement data security measures to protect sensitive data, including encryption, access control, and auditing.

Collaborate with data architects, data scientists, application developers, and other stakeholders to understand business requirements and develop appropriate data solutions.

Create and maintain technical documentation for database designs, ETL processes, and other data-related solutions.

Stay up to date with the latest trends and technologies in database development, data warehousing, and big data processing.

Qualifications

Bachelor's or master s degree in computer science, Engineering, or a related field.

8+ years of experience in database development, with a strong focus on Oracle, Cassandra, and Spark.

Expert-level knowledge of Oracle database architecture and development, including SQL, PL/SQL, and performance tuning.

Strong understanding of Cassandra NoSQL database, including data modeling, CQL, and cluster administration.

Proficiency in Apache Spark, including Spark SQL, Spark Streaming, and Spark MLlib.

Experience with ETL tools and techniques.

Solid understanding of data warehousing principles and best practices.

Experience with data modeling tools and techniques.

Strong analytical and problem-solving skills.

Excellent communication and interpersonal skills.

Ability to work independently and as part of a team.

Oracle Certified Professional (OCP) or equivalent certification is a plus.

Experience with cloud-based database services (e.g., AWS RDS, Azure SQL Database, Google Cloud Spanner) is a plus.

Disclaimer: AI tools may assist in the recruitment process; however, all hiring decisions are made by the recruitment team based on a comprehensive evaluation of candidates.

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More about this job

Responsibilities

Design and develop database schemas, data models, database objects, and ETL processes across Oracle, Cassandra, and Spark environments. Optimize database performance, build Spark applications for large-scale data processing, implement data security, and document solutions in collaboration with stakeholders.

Requirements

Requires a bachelor's or master's degree in computer science, engineering, or a related field, and 8+ years of database development experience focused on Oracle, Cassandra, and Spark. Candidates should have strong Oracle SQL and PL/SQL expertise, Cassandra data modeling and CQL knowledge, Spark proficiency, and experience with ETL, data warehousing, and data modeling.

Skills

Oracle Database Development
Cassandra
Apache Spark
SQL
PL/SQL
CQL
Python
ETL
Data Modeling
Database Performance Tuning
Data Warehousing
Spark SQL
Spark Streaming
Spark MLlib
Apache NiFi
Oracle Data Integrator

Visa sponsorship

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Keywords

Oracle
Cassandra
Apache Spark
SQL
PL/SQL
CQL
Python
Apache NiFi
Oracle Data Integrator
ETL
Data Modeling
Logical Data Models
Physical Data Models
Database Performance Tuning
Indexing
Spark SQL
Spark Streaming
Spark MLlib
Data Warehousing
Data Security
Encryption
Access Control
Auditing
Oracle Certified Professional
AWS RDS
Azure SQL Database
Google Cloud Spanner
Big Data Processing
Database Development

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