Intern Java Mainframe Developer Jobs in Toronto, ON

Venture outside the ordinary - TMX Careers

The TMX group of companies includes leading global exchanges such as the Toronto Stock Exchange, Montreal Exchange, and numerous innovative organizations enhancing capital markets. United as a global team, we're connecting cross-functionally, traversing industries and geographies, moving opportunity into action, advancing global economic growth, and propelling progress. Through a rich exchange of ideas, meaningful collaboration, and a nimble operating model, we're powering some of the nation's most critical systems, fueling capital formation and innovation, bringing increased opportunity to business visionaries, product ingenuity to consumers, and career exploration to our team.

Ready to be part of the action?

The role of the Software Engineer Intern (Java) is to work with other application/platform developers and implement business requirements into concrete solutions. Armed with the latest AI knowledge, your mandate will be to maximize the AI adoption in our current development environment to accelerate our software development velocity.

This role reports to: Manager, Application Development

This role is hybrid (2-3 days/week in the office) - based in Toronto, ON.

Key Accountabilities:

• You will develop Software solutions that fits within the guidelines set forth by Security, Architecture and Solution Leads.

• You will expand the current AI usage through the integration of IDE, IntelliJ, Red Hat CodeReady or Visual Studio Code.

• You will create documentation and test scripts supporting the development work.

• You will provide documentations to the DevOps team to successfully deploy changes to the Production environment.

• You will support business as usual activities (BAU) with Application support and Customer Operations team including but not limited to resolving production defects, performance issues and system outages.

Must Have(s):

• University degree or college diploma in computer science or an equivalent combination of education and work experience

• Experience in Java application development (JDK 8 and JDK 11) with expertise in jBoss servers.

• Experience working with Spring framework and Spring Boot

• Experience with Claude, Copilot and Amazon bedrock.

• Experience in containerization technologies (e.g., Docker) and deployment on platforms like OpenShift, Kubernetes or AWS ECS/EK

• Experience in Agile Software Development Lifecycle, building software the Agile way from design, development, testing, deployment, to production release;

• Java Skill Set: Core Java, Multi-Threading, Collections, JDBC, Maven, Ant

• RDBMS Experience with exposure to writing T-SQL, Stored Procedures and jobs, specifically in Oracle, MS-SQL and DB2.

• Experience working in both Linux and MS Windows host environments

• Experience with source control software Git, BitBucket

Nice to Have(s):

• Experience in applications written in Python, Javascripts, React and Node.js

• Understanding of modern software development practices, including microservices architecture and CI/CD pipelines.

• Background in project management tools like JIRA or DevOps

Note:

• 12 month Co-op / Internship: September 8, 2026 - September 10, 2027

• In order to be considered for the position, you are required to submit your Knockri Assessment

Salary Range: 25/hour-28/hour CAD

Please note that the salary range included is a guideline only. The salary offered may vary based on factors, including, but not limited to, the successful candidate's relevant knowledge, skills, and experience.

The recruiting efforts for this role are intended to fill a vacant position.

For this role AI-assisted tools are utilised as one input in the application and screening process. AI does not make final hiring or interview decisions.

In the market for...

Excitement - Explore emerging technology and innovation, as well as ventures and digital finance that shape the future of global markets! Experience the movement of the market while grounded in the stability of close to 200 years of success.

Connection - With site hubs in some of the world's most multicultural cities, we leverage our size and structure to create rich connections and belonging while experiencing powerful global impact through our work.

Impact - More than a platform, we use our talents to power mission-critical systems that drive global economic advancement, innovation, and growth. As well, our employee-led Team Impact spreads social good via our giving strategy.

Wellness - From empathetic leadership to a culture of flexibility and balance, we believe wellness at work creates the maximum yield and a stronger "we". Plus, with a cloud-first and hybrid workstyle, as well as generous time-off and leaves, we support a life well lived!

Growth - From a growth mindset in our work, to expansion in our business, TMX is home to action-takers energized by the achievement of ambitious growth.

Ready to enrich your career with impactful work, leaders who truly care, and the flexibility and programs to help you thrive as part of #TeamTMX ? Apply now.

Please note that our company is not currently sponsoring work permit applications and the applicant must be authorized to work in the country where this position is located.

TMX is committed to creating and sustaining a collegial work environment in which all individuals are treated with dignity and respect and one which reflects the diversity of the community in which we operate. We provide accommodations for applicants and employees who require it.