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Senior Database Developer Jobs in Mississauga, ON

ServiceNow

Senior Database Engineer

Toronto, ON · On-site +1

Become an SME in production database troubleshooting, ServiceNow instance performance issues and ... Formal experience on a DevOps(Kubernetes and CICD pipeline) or Performance or support team ...

Citi

Senior Data Engineer -- Vice President

Mississauga, ON · On-site

CA$120K - CA$170K/yr

Citi is looking for a Senior Data Engineer at Vice President level to design and lead high ... Tune database performance by identifying and resolving bottlenecks, monitoring system behavior, and ...

New

TMX Group

Database Engineer

Toronto, ON · Hybrid

CA$110K - CA$120K/yr

Senior Manager, Clearing Technology Services * Job Location: Hybrid (2-3 days in office) - based in ... Enforce database engineering standards and partner with Development Squads and software vendors to ...

Rumble

Senior Data Engineer

Toronto, ON

CA$149K - CA$170K/yr

Rumble is seeking a Senior Data Engineer to design, build, and operate the data platforms and ... Strong experience with distributed databases, storage engines, or query systems such as Trino ...

Rockstar

Senior Data Engineer

Toronto, ON

A Sr. Data Engineer is sought to join the team. This individual will play a key role in evolving ... and various databases. The ideal candidate will combine technical data expertise with strong ...

Sun Life Financial

Senior Data Engineer

Toronto, ON · On-site

... database systems, relational models, dimensional models, and analytical models * 3-5 years ... Knowledge and experience working with DevOps technologies * Experience working in a large financial ...

Hays

Senior Data Engineer

Toronto, ON

CA$70 - CA$80/hr

Senior Data Engineer Rate : $60-70/hr T4; $70-80/hr INC Length : 6 months (strong potential for ... Experience working with non-relational databases (e.g., Bigtable, Druid) * Strong SQL skills with ...

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All JobsDatabase Developer JobsSenior Database Developer JobsSenior Database Developer Jobs in Mississauga, ON

Senior Database Developer information

See Mississauga, ON salary details

$62.6K

$108K

$150.7K

How much do senior database developer jobs pay per year?

As of Aug 28, 2026, the average yearly pay for senior database developer in Mississauga, ON is $108,025.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,545.00 and $124,340.00 per year, depending on experience, location, and employer.

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

AspectSenior Database DeveloperDatabase Administrator
Primary FocusDesigning, developing, and optimizing database systems and queriesMaintaining, securing, and backing up databases
Required SkillsSQL, database design, performance tuning, codingDatabase management, security protocols, troubleshooting
Work EnvironmentDevelopment teams, project-based tasksOperational environment, system monitoring
CertificationsOracle, Microsoft SQL Server certificationsOracle Certified Professional, Microsoft Certified: Azure Database Administrator

While both roles require strong SQL and database knowledge, Senior Database Developers focus on creating and optimizing database solutions, whereas Database Administrators handle the ongoing maintenance, security, and performance of databases. Understanding these differences helps employers and professionals align skills with job responsibilities.

Are senior database developers still in demand?

Senior database developers remain in demand due to ongoing needs for data management, system optimization, and database design across industries. Proficiency in SQL, experience with cloud platforms, and knowledge of database security are valuable skills that support continued employment opportunities.

What is the role of a senior database developer?

A senior database developer designs, develops, and maintains complex databases to ensure data integrity, security, and performance. They often work with SQL, optimize queries, and collaborate with development teams to support application needs and data workflows.
Infographic showing various Senior Database Developer job openings in Mississauga, ON as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 84% Physical, 6% Hybrid, and 10% Remote job distribution, with an average salary of $108,025 per year, or $51.9 per hour.

Senior Database Developer

Staples Canada ULC

Richmond Hill, ON • Hybrid

Full-time

Medical, Dental

Re-posted 6 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.   

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...

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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