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Junior Database Developer Jobs in Ontario (NOW HIRING)

Dr Clean

Junior Cost Estimator Internship

Sudbury, ON · On-site

Junior Cost Estimator Internship Location: Sudbury Schedule: Full-Time, Monday to Friday Term: 1 ... databases, and sales management systems, ensuring pricing, engineering changes, customer ...

Targeted Talent

2 - Senior Data Engineer

Waterloo, ON · On-site

Experience mentoring and guiding Junior Data Engineers in previous roles * Strong Experience working with SQL and large data sets * Hands-on experience coding in Python would be a strong asset

Sync.com

Software Developer

Toronto, ON · On-site

CA$97K - CA$100K/yr

Databases: MySQL, PostgreSQL, Snowflake * Cloud/DevOps: Docker, Linux, DigitalOcean, CI/CD ... Experience mentoring junior developers or interns. Perks: * Generous wellness program * Best-in-the ...

Targeted Talent

2 - Senior Data Engineer

Waterloo, ON · On-site

Experience mentoring and guiding Junior Data Engineers in previous roles * Strong Experience working with SQL and large data sets * Hands-on experience coding in Python would be a strong asset

Ci

Senior Data Engineer

Toronto, ON · On-site

CA$69K - CA$119K/yr

Support and mentor junior team members, fostering a collaborative and growth-oriented environment ... Database systems - PostgreSQL, Sybase, MySQL, DynamoDB * Data storage repositories - SFTP, AWS S3

Hitachi

Systems Design Specialist- Senior

Toronto, ON · On-site

Performs technical/engineering tasks to define application databases for software subsystems ... Mentors more junior Signaling Engineers, coaching them on deliverables preparation and reviewing ...

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Junior Database Developer information

What is the difference between Junior Database Developer vs Database Administrator?

AspectJunior Database DeveloperDatabase Administrator
Required CredentialsTypically a bachelor's degree in computer science or related field; some certifications like Microsoft SQL Server or Oracle are commonSimilar educational background; certifications like Oracle DBA, Microsoft Certified: Azure Database Administrator are often preferred
Work EnvironmentMostly involved in coding, designing, and developing databases; works closely with developers and analystsFocuses on maintaining, backing up, and securing databases; interacts with IT teams and end-users
Employer & Industry UsageUsed in software development companies, tech firms, and organizations with database needsCommon in large enterprises, financial institutions, and healthcare organizations requiring database management

While both roles require knowledge of database systems and similar certifications, Junior Database Developers primarily focus on creating and optimizing databases, whereas Database Administrators handle ongoing maintenance, security, and performance management.

What is a junior database developer?

Junior Database Developers are entry-level professionals who assist in designing, developing, and maintaining databases for organizations. They work under the supervision of senior database developers or administrators, helping with tasks such as writing SQL queries, troubleshooting data issues, and supporting database updates. Their role is crucial for ensuring data integrity, optimizing performance, and supporting the data needs of various departments. Junior Database Developers often collaborate with software developers and IT teams to implement database solutions. This position is typically suited for recent graduates or individuals with some programming and database experience.

What are the typical challenges a junior database developer might face when starting out?

As a Junior Database Developer, you may find it challenging to work with unfamiliar database management systems, optimize queries for performance, and understand complex data models. Adapting to a team environment, where you collaborate closely with senior developers, data analysts, and software engineers, is also common. Additionally, learning best practices for data security and consistency can be demanding, but overcoming these challenges provides valuable experience and growth opportunities.

What skills and qualifications are needed to thrive as a junior database developer?

To thrive as a Junior Database Developer, you need a solid understanding of database concepts, SQL programming, and a relevant degree in computer science or a related field. Familiarity with database management systems like MySQL, SQL Server, or Oracle, as well as version control tools such as Git, is typically required. Strong analytical thinking, attention to detail, and effective communication skills help you troubleshoot issues and collaborate with team members. These skills and qualifications are crucial for building reliable databases, ensuring data integrity, and supporting organizational data needs.
What are the most commonly searched types of Database Developer jobs in Ontario? The most popular types of Database Developer jobs in Ontario are:
What cities in Ontario are hiring for Junior Database Developer jobs? Cities in Ontario with the most Junior Database Developer job openings:
Junior Database Developer jobs near you
Infographic showing various Junior Database Developer job openings in Ontario as of August 2026, with employment types broken down into 86% Full Time, 8% Part Time, and 6% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution.

Senior Software Developer

Staples Canada ULC

Richmond Hill, ON • Hybrid

Full-time

Medical, Dental

Posted 16 days ago

Job description

Some of what you will do:

The Staples technology team is seeking a motivated and talented Junior Software Developer to join our backend development team. We are looking for someone passionate about building robust, scalable backend systems and microservices. This role focuses exclusively on server-side development using .NET and C# technologies. You will work in a collaborative environment where you can grow your skills while contributing to mission-critical applications that serve our customers.

Specifically, You Will:

  • Develop and maintain backend applications and APIs using .NET and C#.

  • Build and enhance microservices architecture components.

  • Design and implement RESTful APIs and web services.

  • Work with databases to create efficient data access layers.

  • Deploy and monitor applications in Azure cloud environment.

  • Write clean, maintainable, and well-documented code.

  • Participate in code reviews and follow development best practices.

  • Contribute to testing strategies including unit and integration testing..

Some of what you need:

  • Bachelor's degree or diploma in Computer Science, Software Engineering, or related field.

  • Relevant coding bootcamp certification or equivalent practical experience.

  • Microsoft certifications (Azure Fundamentals, C# certifications) are a plus.

  • Strong foundational knowledge of C# and .NET framework (.NET 8+).

  • Understanding various design patterns and best practices.

  • Good knowledge of microservices architecture concepts, Cloud Native services, Containerized Architecture.

  • Expertise in RESTful API design and development.

  • Database knowledge (SQL Server preferred, but open to other RDBMS).

  • Familar understanding of Azure cloud services such as EventHub, Table Storage, Blob Storage.

  • Experience with version control systems (Git).

  • Understanding of software development lifecycle (SDLC) and Agile methodology.

  • Experience with Azure services (App Service, Azure Functions, Service Bus, Azure SQL).

  • Knowledge of containerization technologies (Docker, Kubernetes).

  • Familiarity with message queues and event-driven architecture.

  • Understanding of CI/CD pipelines and DevOps practices (Azure DevOps).

  • Experience with Entity Framework Core or other ORM tools.

  • Knowledge of design patterns and software architecture principles.

  • Experience with automated testing frameworks (xUnit, NUnit).

  • Understanding of authentication and authorization (OAuth, JWT).

  • Knowledge of caching strategies (Redis, Azure Cache).

  • 5+ years of professional software development experience.

  • 5+ years of experience with .NET Core/.NET 8+ and C# development.

  • Basic experience with SQL databases and writing queries.

  • Exposure to cloud platforms, preferably Microsoft Azure.

  • Understanding of web service development and API integration.

  • Experience with development tools like Visual Studio or VS Code.

  • Familiarity with agile development methodologies is a plus.

Physical demands/working conditions:

  • Office environment - Hybrid, with 4 days onsite in Richmond Hill, subject to the hybrid policy. 

Some of what you will get:

  • Associate discount

  • Health and Dental benefits

  • RRSP/DPSP

  • Performance bonuses

  • Learning & Development programs

  • And more...

We value transparency in our hiring processes. Please note, artificial intelligence may be used in certain stages to screen, assess, or select applicants, however, a human reviewer makes all final decisions. This posting is for an existing vacancy.
About the Team
At Staples Canada we are dynamic, inspiring partners to our customers and the communities in which we live. As The Working and Learning Company, we inspire people to work smarter, learn more and grow every day. We're looking for curious, approachable, and passionate individuals who love finding solutions. If that's you, let's work, learn, and grow together.

We are building an inclusive and diverse team
Staples Canada is continuously working towards creating an inclusive and diverse work environment. We welcome, value and thrive on perspectives and contributions from backgrounds that vary by race, gender, sexual orientation, gender identity or expression, lifestyle, age, educational background, national origin, religion or physical ability. If you have a disability or special need that requires accommodation, please let us know.

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