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Junior Database Developer Jobs in Toronto, ON (NOW HIRING)

Mentorship & Learning Participate in knowledge sharing, provide technical guidance to junior team ... , Sr DBA, Systems Architect or a mix of these roles, preferably within a high-transaction ...

Senior Cloud Database Engineer

Toronto, ON ยท On-site

$116 - $145/hr

As Marqeta's Senior Cloud Database Engineer, you will join our Cloud Database Engineering team ... Mentoring junior engineers and contributing to team standards. Who You Are * 5+ years experience as ...

The [Junior Full Stack Developer - coop] role is to help plan, design, develop, test, launch, and ... Knowledgeable in the use of at least one modern Database Management System * Experience working ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... ability to mentor junior engineers while collaborating with cross-functional teams. Key ... databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines ...

... database reliability and functionality. * Mentor junior team members, fostering a culture of ... Hands-on experience with modern DevOps and CI/CD frameworks, utilizing Git workflows (branching ...

... junior and mid-level engineers Collaborate with product, DevOps, QA, and architecture teams ... NoSQL databases (MongoDB, DynamoDB, Redis) Solid knowledge of asynchronous processing and ...

... junior and mid-level engineers Collaborate with product, DevOps, QA, and architecture teams ... NoSQL databases (MongoDB, DynamoDB, Redis) Solid knowledge of asynchronous processing and ...

APIs, RDBMS/NoSQL databases, flat files, and streaming platforms (Kafka, Kinesis, Pub/Sub). Cloud ... Professional Practices SDLC & DevOps: Proficient in Git workflows, CI/CD pipelines (GitHub Actions ...

Provide technical leadership to junior engineers through rigorous code reviews, mentorship, and ... databases (e.g., Pinecone, Elasticsearch), multi-agent AI systems with tool calls, and prompt ...

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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 are Junior Database Developers?

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 in the role?

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 are the key skills and qualifications needed to thrive as a Junior Database Developer, and why are they important?

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 Toronto, ON? The most popular types of Database Developer jobs in Toronto, ON are:
Infographic showing various Junior Database Developer job openings in Toronto, ON as of July 2026, with employment types broken down into 86% Full Time, 9% Part Time, 1% Temporary, and 4% Contract. Highlights an 86% Physical, 6% Hybrid, and 8% Remote job distribution.

Senior Database Developer

Staples Canada ULC

Richmond Hill, ON โ€ข Hybrid

Full-time

Medical, Dental

Posted 5 days ago


Job description

Some of what you will do:

Responsibilities will include the design, creation and maintenance of moderate to complex databases and ensuring their stability, reliability, and performance. Should be able to understand and support cross platform interfaces and participate in cross-functional projects that include multiple business processes. May be called upon to lead and coordinate developer resources on assigned projects, meet with business users to determine requirements, and mentor more junior associates.ย  ย 

Specifically, You Will:

  • Create database design.

  • Develop database objects: stored procedures, functions, triggers etc.

  • Ensure performance, security, and availability of databases.

  • Prepare documentation and specifications.

  • Handle common database procedures such as upgrade, backup, recovery, migration, etc.

  • Profile server resource usage and optimize and tweak as necessary.

  • Collaborate with other team members and stakeholders.

Some of what you need:

  • Post secondary education or equivalent work experience.

  • Skilled at optimizing large, complicated SQL statements.

  • Knowledge of indexes, index management, and statistics.

  • Proficient understanding of code versioning tools.

  • MS SQL Server 2005 and above.

  • Certification is a plus; MCTS, MCITP, MVP.

  • Knowledge of front/middle layer and/or CLR is a plus.

  • Experience with development and database administration for MS SQL Server 2005 and above.

  • Experience in troubleshooting and resolving database integrity issues, performance issues, blocking and deadlocking issues, connectivity issues, security issues etc.

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...

#MakeAnImpactย 

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.