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Intern Java Backend Developer Jobs in Ontario (NOW HIRING)

Transunion

Java Developer

Burlington, ON

CA$89K - CA$123K/yr

Core Backend & FullStack Skills. * Practical experience developing UI components using Angular ... We are seeking a Java Developer with strong backend expertise and working knowledge of frontend ...

TransUnion

Java Developer

Burlington, ON · On-site

CA$89K - CA$123K/yr

Core Backend & FullStack Skills. * Practical experience developing UI components using Angular ... We are seeking a Java Developer with strong backend expertise and working knowledge of frontend ...

Rumble - Career Page

Senior Back-End Developer

Toronto, ON · On-site

CA$135K - CA$154K/yr

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance server-side systems that power a large-scale video platform serving millions of users. This role ...

CMiC

PL/SQL & API Developer

Toronto, ON

CA$70K - CA$115K/yr

Job Overview We are seeking a Back-End Developer with deep expertise in Oracle PL/SQL and experience in Java-based REST API development . This role will focus primarily on database development with ...

CMiC

PL/SQL & API Developer

Toronto, ON · On-site

CA$70K - CA$115K/yr

Job Overview We are seeking a Back-End Developer with deep expertise in Oracle PL/SQL and experience in Java-based REST API development . This role will focus primarily on database development with ...

Cognitive Systems

Senior Backend Developer

Waterloo, ON · On-site

Senior Backend Developer (Cloud & APIs) ABOUT YOU You're a strong backend developer who enjoys building reliable cloud services and APIs. You like shipping in a fast-paced environment, collaborating ...

Rumble

Senior Back-End Developer

Toronto, ON · On-site

CA$135K - CA$154K/yr

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance server-side systems that power a large-scale video platform serving millions of users. This role ...

CIBC

Sr. Consultant, Back End Developer

Toronto, ON · Hybrid

The Sr. Consultant, Back End Developer provides technical leadership to develop precise steps and ... Microservices architecture, Java/J2EE, SOAP, REST and gRPC Services, Quarkus, Spring Boot, JSON ...

CIBC US

Sr. Consultant, Back End Developer

Toronto, ON · Hybrid

The Sr. Consultant, Back End Developer provides technical leadership to develop precise steps and ... Microservices architecture, Java/J2EE, SOAP, REST and gRPC Services, Quarkus, Spring Boot, JSON ...

ShyftLabs

Senior Backend Developer

Toronto, ON · Hybrid

CA$100K - CA$140K/yr

The ideal candidate combines strong backend and frontend engineering skills with experience in distributed systems, integrations, and scalable architectures . JavaScript, TypeScript, Node.js, and ...

StackandCo

\n \n \n One of my Clients, a global fintech company, going through an exciting phase of expansion, has an excellent opportunity for a Backend Server \- Java Developer Expert. You must be a flexible ...

StackandCo

\n \n \n My Client, a global fintech company, is going through an exciting phase of expansion, has an excellent opportunity for a Backend Server \- Java Developer Expert. You must be a flexible Java ...

StackandCo

\n \n \n \n \n My Client, a global fintech company, going through an exciting phase of expansion, has an excellent opportunity for a Backend Server \- Java Developer. \n \n \n \n \n \n Day To Day's Of ...

StackandCo

We need someone comfortable working Fullstack, primarily a Java backend role. We have done a lot of work with this client over the past 1 \- 2 years and have had amazing feedback from the engineers ...

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Intern Java Backend Developer information

What are the key skills and qualifications needed to thrive as an Intern Java Backend Developer, and why are they important?

To thrive as an Intern Java Backend Developer, you need a solid understanding of Java programming, object-oriented principles, and basic knowledge of backend frameworks like Spring, often supported by coursework or relevant projects. Familiarity with databases (such as MySQL), version control systems like Git, and build tools (e.g., Maven or Gradle) is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help you collaborate and adapt in team environments. These skills and qualities are crucial for contributing to real projects, growing your technical expertise, and supporting overall team success.

What kinds of projects and tasks can I expect as an Intern Java Backend Developer?

As an Intern Java Backend Developer, you’ll typically work on tasks such as writing and testing APIs, fixing bugs, and implementing core backend features under the guidance of senior developers. You may also participate in code reviews, collaborate with frontend and QA teams, and help with database management or performance optimization. These projects are designed to give you hands-on experience with Java frameworks, version control systems, and agile development practices, all while contributing to real-world applications.

What does an Intern Java Backend Developer do?

An Intern Java Backend Developer assists in building and maintaining the server-side logic of web applications using Java. They typically work under the guidance of senior developers, writing code, fixing bugs, and learning about frameworks like Spring or Hibernate. Their responsibilities often include database interaction, API development, and ensuring applications are scalable and efficient. Interns gain practical experience with industry-standard tools and workflows, helping prepare them for a full-time backend development role.
What are the most commonly searched types of Java Backend Developer jobs in Ontario? The most popular types of Java Backend Developer jobs in Ontario are:
What are popular job titles related to Intern Java Backend Developer jobs in Ontario? For Intern Java Backend Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Intern Java Backend Developer jobs in Ontario look for? The top searched job categories for Intern Java Backend Developer jobs in Ontario are:
Intern Java Backend Developer jobs near you
Infographic showing various Intern Java Backend Developer job openings in Ontario as of May 2026, with employment types broken down into 33% Internship, and 67% Full Time. Highlights an 67% In-person, and 33% Remote job distribution.
Java Developer

Java Developer

Transunion

Burlington, ON

CA$89K - CA$123K/yr

Full-time

Posted 9 days ago

TransUnion rating

9.0

Company rating: 9.0 out of 10

Based on 5 frontline employees who took The Breakroom Quiz

Job description

TransUnion's Job Applicant Privacy Notice

What We'll Bring:

At TransUnion, we are dedicated to finding ways information can be used to help people make better and smarter decisions. As a trusted provider of global information solutions, our mission is to help people around the world access the opportunities that lead to a higher quality of life, by helping organizations optimize their risk-based decisions and enabling consumers to understand and manage their personal information. Because when people have access to more complete and multidimensional information, they can make more informed decisions and achieve great things.
Every day TransUnion offers our employees the tools and resources they need to find ways information can be used in diverse ways. Whether it is helping businesses better manage risk, providing better insights so a consumer can qualify for his first mortgage or working with law enforcement to make neighborhoods safer, we are improving the quality of life for individuals, families, communities and local economies around the world.

What You'll Bring:

  • 3-5+ years of professional full stack or backend development experience, including hands on experience with Java, Spring Boot, and Angular.
  • Strong experience with: Java, Spring Framework & Spring Boot, Spring Security & OAuth 2.0, Hibernate / JPA, Maven.
  • Core Backend & FullStack Skills.
  • Practical experience developing UI components using Angular.
  • Experience consuming REST APIs from Angular applications.
  • Databases & Messaging.
  • Experience working with PostgreSQL.
  • Handson experience with ActiveMQ or similar messaging systems.
  • Testing, Quality & Security
  • Unit testing using JUnit 5/6 and Mockito.
  • Experience with static code analysis and security scanning tools: Sonar, Checkmarx (or Fortify / Black Duck).
  • DevOps & Environment.
  • Experience working in Linux environments
  • Basic to intermediate shell scripting.
  • Working knowledge of Jenkins for CI/CD.
  • Proficient with Git or similar version control systems.

Impact You'll Make:

We are seeking a Java Developer with strong backend expertise and working knowledge of frontend development using Angular. The ideal candidate will contribute to the design, development, testing, and maintenance of secure, scalable enterprise applications, working across both backend services and userfacing components.

You will collaborate with crossfunctional teams including backend, frontend, QA, and DevOps to deliver highquality, reliable solutions.

Key Responsibilities:

  • Design, develop, and maintain backend services using Java and Spring Boot.
  • Develop and maintain frontend components using Angular.
  • Build and integrate RESTful APIs between Java backend services and Angular frontend.
  • Implement authentication and authorization using Spring Security and OAuth 2.0.
  • Develop data persistence layers using Hibernate/JPA with PostgreSQL.
  • Implement asynchronous messaging and integration using ActiveMQ.
  • Write clean, maintainable, and testable code following best practices.
  • Develop unit tests using JUnit 5/6 and Mockito.
  • Ensure code quality and security compliance using Sonar and Checkmarx (or Fortify / Black Duck).
  • Participate in code reviews and collaborative design discussions.
  • Work in Linux environments, including basic shell scripting tasks.
  • Use Jenkins for CI/CD pipelines and participate in deployment activities.
  • Manage source code using Git or other version control systems.
  • Troubleshoot, debug, and resolve application and production issues.

The expected pay range for this position is $89,000 - $123,000 annually. The payinformation provided for this position reflects a reasonable estimate of the range of expectedcompensation for this job. At TransUnion, actual compensation is based on careful consideration ofmany factors such as (but not limited to) an individual's education, training, work experience, job related skill set, location, and industry knowledge, as well as the scope and responsibilities of theposition and market considerations. In addition, variable compensation is based on applicable companyguidance and plan documents as well as performance.

This is a hybrid position and involves regular performance of job responsibilities virtually as well as in-person at an assigned TU office location for a minimum of two days a week.

This job posting is for an existing vacancy. The opening is the result of a newly created position.

Accommodation is available, including for applicants with disabilities, in accordance with applicable laws.

TransUnion's Internal Job Title:

Consultant, Applications Development

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