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Internship Java Developer Jobs in Ontario (NOW HIRING)

Ritchie Bros.

Software Engineer

Mississauga, ON

In C#, .NET, Java, React JS, TypeScript, RESTful APIs based on design specifications. * For SQL and ... internships, personal projects, or academic projects are highly valued). * Technical Skills ...

Td

Associate Software Engineer

Toronto, ON · On-site

CA$59K - CA$84K/yr

Co-op, internship, academic project, or previous software development experience. * Familiarity ... CD pipelines, DevOps practices, and source control tools such as Git. * Exposure to automated ...

Manulife

Summer Intern 2027 - AI

Toronto, ON · Hybrid

CA$54K - CA$72K/yr

Our internship program offers more than just experience; you'll join a vibrant community ... Experience with at least one programming language (e.g., Python, R, Java) and familiarity with data ...

Sanofi EU

AI Engineer

Brampton, ON · On-site +1

CA$94K - CA$136K/yr

Mentor and coach junior AI engineers, software engineers, data scientists, and interns while ... Strong software engineering and programming skills in Python or Java or other enterprise ...

Sanofi EU

AI Engineer

Unionville, ON · On-site +1

CA$94K - CA$136K/yr

Mentor and coach junior AI engineers, software engineers, data scientists, and interns while ... Strong software engineering and programming skills in Python or Java or other enterprise ...

Sanofi EU

AI Engineer

Maple, ON · On-site +1

CA$94K - CA$136K/yr

Mentor and coach junior AI engineers, software engineers, data scientists, and interns while ... Strong software engineering and programming skills in Python or Java or other enterprise ...

Sanofi EU

AI Engineer

Mississauga, ON · On-site +1

CA$94K - CA$136K/yr

Mentor and coach junior AI engineers, software engineers, data scientists, and interns while ... Strong software engineering and programming skills in Python or Java or other enterprise ...

Sanofi EU

AI Engineer

Toronto, ON · On-site +1

CA$94K - CA$136K/yr

Mentor and coach junior AI engineers, software engineers, data scientists, and interns while ... Strong software engineering and programming skills in Python or Java or other enterprise ...

Bmo

Cloud/AI Platform Engineer

Toronto, ON · On-site

CA$70K - CA$150K/yr

Contribute to CI/CD pipelines and DevOps practices for AI and platform engineering teams ... Java * C# * Understanding of software engineering fundamentals, including: * Data structures and ...

Stripe

Software Engineer, New Grad

Toronto, ON · On-site

... internship experience). * Experience and familiarity with programming, either through side projects or classwork. We work mostly in Java, Ruby, JavaScript, Scala, and Go. We believe new programming ...

NimbleRx

Senior Backend Engineer

Toronto, ON · On-site

Mentor junior engineers and interns * Promote best practices and high-quality development ... Rich development experience with Java, Spring, and SQL * Experience developing scalable, customer ...

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Showing results 21-40

All JobsJava Developer JobsInternship Java Developer JobsInternship Java Developer Jobs in Ontario

Internship Java Developer information

What are the qualifications to get a Java developer internship?

The qualifications to become a Java developer intern include that you are pursuing at least a bachelor’s degree in engineering, computer science, or a similar degree. Experience working with different computer languages is beneficial when you are applying for positions. Having some experience with the following can be helpful: C#, NET, HTML5, Java, VB, SQL, MVC, or data analytics. Strong communication skills can help you to stand out above other applicants. Experience with Java development, Spring Framework, and relational databases can also help you applying for a Java developer internship.

What is an internship Java developer?

Internship Java Developers are students or recent graduates who work in a company to gain practical experience in Java programming. They assist in developing, testing, and maintaining Java applications under the supervision of experienced developers. This role helps interns apply their academic knowledge to real-world projects, learn industry best practices, and improve their coding and teamwork skills. Internships often serve as a valuable stepping stone to full-time software development positions.

What kinds of projects and tasks can an internship Java developer expect to work on during their internship?

As an Internship Java Developer, you can expect to work on a variety of projects that help you build practical skills, such as developing new features, fixing bugs, writing unit tests, or assisting with code reviews. You’ll likely collaborate closely with experienced developers and participate in team meetings or agile sprints, which provide valuable exposure to real-world software development processes. Projects may range from maintaining existing applications to contributing to new product development, giving you a well-rounded experience in Java programming. This role is designed to help you learn industry best practices and gain hands-on experience while receiving mentorship and feedback from your team.

What are the key skills and qualifications needed to thrive as an internship Java developer, and why are they important?

To thrive as an Internship Java Developer, you need a solid understanding of Java programming, object-oriented principles, and basic software development concepts, often supported by coursework or personal projects. Familiarity with version control systems like Git, integrated development environments (IDEs) such as Eclipse or IntelliJ IDEA, and basic knowledge of databases are typically required. Strong problem-solving skills, eagerness to learn, and effective communication help interns adapt and contribute within development teams. These competencies enable you to quickly integrate into projects, support code quality, and grow professionally in a fast-paced environment.

What is the difference between Internship Java Developer vs Junior Java Developer?

AspectInternship Java DeveloperJunior Java Developer
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldBachelor's degree in Computer Science or related field, with some practical experience
Work EnvironmentTraining-focused, supervised environment, often part-time or temporaryFull-time, ongoing employment with more responsibilities
Employer & Industry UsageInternships offered by tech companies, startups, and IT departments for skill developmentEntry-level position in software development teams across various industries

The main difference between an Internship Java Developer and a Junior Java Developer is experience and responsibility. Internships are designed for students or recent graduates gaining initial exposure, while Junior Java Developers have more hands-on work experience and are expected to contribute more independently to projects.

More about Internship Java Developer jobs

What are the most commonly searched types of Java Developer jobs in Ontario?

The most popular types of Java Developer jobs in Ontario are:

What are popular job titles related to Internship Java Developer jobs in Ontario?

For Internship Java Developer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Internship Java Developer jobs in Ontario look for?

The top searched job categories for Internship Java Developer jobs in Ontario are:

What cities in Ontario are hiring for Internship Java Developer jobs?

Cities in Ontario with the most Internship Java Developer job openings:

Internship Java Developer jobs near you
Infographic showing various Internship Java Developer job openings in Ontario as of August 2026, with employment types broken down into 6% Internship, 67% Full Time, 25% Part Time, and 2% Contract. Highlights an 88% Physical, 1% Hybrid, and 11% Remote job distribution.

Summer Intern 2027 - Software Engineering

Manulife

Toronto, ON • Hybrid

CA$52K - CA$70K/yr

Full-time

Posted 7 days ago

Job description

At Manulife John Hancock, we believe in investing in the future - starting with you. Our internship program is your launchpad to success, offering the support, structure, and exciting opportunities you need to thrive and make your mark.

Asa Software EngineeringIntern,you'll gain hands-on experience developing applications and systems that support business and customer solutions. You'll work with modern development tools and frameworks to build scalable, high-quality software while contributing to the full software development lifecycle. We offer multiple roles within this program, providing support from our diverse, passionate, and talented technology teams.You'llreceive guidance from skilled technical leaders who value your teamwork and coordination abilities, and gain exposure to industry-leading, enterprise technologies.

We are currently looking for highly motivated students to join us in our Toronto, Ontario, Canada office for a summer internship, running from April 29th - August 19th, 2027. This is a hybrid position, where you are expected to be in the office Tuesday-Thursday, with the opportunity to work remotely on Mondays and Fridays.

Position Responsibilities:

  • Contribute to a team of engineers focused on building scalable, reliable applications

  • Support application development, testing, and debugging efforts

  • Assist in feature development and system enhancements

  • Collaborate with engineering and business teams to build user-focused solutions

  • Participate in code reviews and maintain code quality standards

  • Support deployment, monitoring, and ongoing application maintenance

Required Qualifications:

  • Currently pursuing an undergraduate degree in Computer Science, Engineering, or a related field

  • Experience with at least one programming language (e.g., Java, Python, Go, JavaScript)

  • Familiarity with version control systems (e.g., Git, Bitbucket)

  • Strong communication skills and willingness to learn in a collaborative environment

Preferred Qualifications:

  • Exposure to software frameworks, libraries, or development tools

  • Understanding of software development lifecycle and best practices

  • Familiarity with APIs, web services, or application architecture

When you join our team:

  • We'llempower you to learn and grow the career you want.

  • We'llrecognize and support you in a flexible environment where well-being and inclusion are more than just words.

  • As part of our global team,we'llsupport you in shaping the future you want to see.

  • As part of our internship program, you will gainearly accessto Manulife John Hancock's premier early talent program, GRO, tailored to graduating students! This program is designed to launch your career with the support, structure, and opportunities you need to thrive.

Application instructions:

  • Submit your resume, cover letter, academic transcript, and work term evaluation (if any) in one PDF file.

  • Note: Applications are reviewed on a rolling basis.

Please note the salary range is expected to be between $52,650 CAD to $70,200 CAD.

The actual salary will vary depending on local market conditions, geography and relevant job-related factors such as knowledge, skills, qualifications, experience, and education/training. The annual salary will be pro-rated based on the length of the work-term

#LI-Hybrid

This posting supports an ongoing hiring initiative for existing and/or future vacancies.

We use data and analytics technologies, such as artificial intelligence (AI), and automated processing tools, to analyze and process the information you provide to us or third parties in the application process. For more information, please refer to our personal information collection statement.

About Manulife and John Hancock
Manulife Financial Corporation is a leading international financial services provider, helping people make their decisions easier and lives better. To learn more about us, visit https://www.manulife.com/en/about/our-story.html.
Manulife is an Equal Opportunity Employer
At Manulife/John Hancock, we embrace our diversity. We strive to attract, develop and retain a workforce that is as diverse as the customers we serve and to foster an inclusive work environment that embraces the strength of cultures and individuals. We are committed to fair recruitment, retention, advancement and compensation, and we administer all of our practices and programs without discrimination on the basis of race, ancestry, place of origin, colour, ethnic origin, citizenship, religion or religious beliefs, creed, sex (including pregnancy and pregnancy-related conditions), sexual orientation, genetic characteristics, veteran status, gender identity, gender expression, age, marital status, family status, disability, or any other ground protected by applicable law.
It is our priority to remove barriers to provide equal access to employment. A Human Resources representative will work with applicants who request a reasonable accommodation during the application process. All information shared during the accommodation request process will be stored and used in a manner that is consistent with applicable laws and Manulife/John Hancock policies. To request a reasonable accommodation in the application process, contact hr@manulife.com.

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