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Java Internship Jobs in Mississauga, ON (NOW HIRING)

Familiarity with development technologies like Docker, CDK, Terraform, Java, Python, React, GraphQL ... The salary range (or starting rate for interns and associates) for this role represents numerous ...

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

Mentor junior engineers and interns * Promote best practices and high-quality development ... Rich development experience with Java / Spring Boot, React, ECMAScript standard and SQL (MySQL)

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Java Internship information

What is a Java Internship?

A Java Internship is a temporary position, usually aimed at students or recent graduates, that provides hands-on experience working with Java programming in a real-world environment. Interns typically assist with software development tasks, bug fixing, and sometimes participate in designing and testing Java applications. This role helps individuals gain practical skills, industry knowledge, and professional networking opportunities that can aid in securing a full-time job in software development.

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

To thrive as a Java Intern, you need a solid understanding of Java programming, basic knowledge of object-oriented principles, and enrollment in or completion of a computer science or related degree. Familiarity with IDEs like Eclipse or IntelliJ IDEA, version control systems such as Git, and basic database concepts is often expected. Strong problem-solving skills, eagerness to learn, and effective communication set exceptional interns apart. These skills and qualities enable interns to contribute meaningfully to projects, adapt to team workflows, and accelerate their professional growth.

What is the difference between Java Internship vs Java Developer?

AspectJava InternshipJava Developer
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldBachelor's degree in Computer Science or related, often with certifications
Work EnvironmentEntry-level, training-focused, often part-time or temporaryFull-time, professional development, project-based
Employer & Industry UsageInternships offered by tech companies, startups, and organizations for trainingFull-time roles in software development companies, IT departments, or tech firms
Common Search & Comparison IntentUnderstanding entry points into Java developmentSeeking full-time Java development roles

In summary, a Java Internship is an entry-level, training-focused position designed for students or recent graduates to gain practical experience. A Java Developer is a full-time professional role requiring more experience and responsibility in developing Java applications.

What types of projects do Java interns typically work on, and how do these projects support their learning and professional growth?

Java interns are often assigned to real-world projects such as developing web applications, enhancing existing codebases, or automating testing processes. These projects are designed to provide hands-on experience with Java frameworks like Spring or Hibernate, version control systems, and collaborative development tools. Interns usually work closely with experienced developers, participate in code reviews, and attend team meetings, which helps them gain valuable feedback and understand industry best practices. This environment not only sharpens their technical skills but also exposes them to effective teamwork and agile development methodologies, setting a strong foundation for future career opportunities.
What are the most commonly searched types of Java jobs in Mississauga, ON? The most popular types of Java jobs in Mississauga, ON are:
What are popular job titles related to Java Internship jobs in Mississauga, ON? For Java Internship jobs in Mississauga, ON, the most frequently searched job titles are:
What job categories do people searching Java Internship jobs in Mississauga, ON look for? The top searched job categories for Java Internship jobs in Mississauga, ON are:
What cities near Mississauga, ON are hiring for Java Internship jobs? Cities near Mississauga, ON with the most Java Internship job openings:
Infographic showing various Java Internship job openings in Mississauga, ON as of July 2026, with employment types broken down into 7% Internship, 1% As Needed, 74% Full Time, 16% Part Time, 1% Temporary, and 1% Contract. Highlights an 87% Physical, 1% Hybrid, and 12% Remote job distribution.
Offensive Security - Penetration Tester

Offensive Security - Penetration Tester

RSM

Toronto, ON • On-site

CA$62K - CA$99K/yr

Full-time

Re-posted 23 hours ago


Job description

We are the leading provider of professional services to the middle market globally, our purpose is to instill confidence in a world of change, empowering our clients and people to realize their full potential. Our exceptional people are the key to our unrivaled, inclusive culture and talent experience and our ability to be compelling to our clients. You'll find an environment that inspires and empowers you to thrive both personally and professionally. There's no one like you and that's why there's nowhere like RSM.


Responsibilities:

  • Perform security assessments, including static and dynamic application security testing

  • Conduct manual penetration testing on web applications, network devices, and other systems

  • Collaborate with our clients in a fast-paced environment across many technology stacks and services, including cloud platforms and development technologies

  • Develop, enhance, and interpret security standards and guidance

  • Demonstrate and promote security best practices, including secure development and cloud security

  • Assist with the development of remediation recommendations for identified findings

  • Identify and clearly articulate (written and verbal) findings to senior management and clients

  • Help identify improvement opportunities for assigned clients

  • Stay up-to-date with the latest security trends, technologies, and best practices

  • Work effectively within a team, fostering collaboration and open communication to deliver successful outcomes

  • Supervise and provide engagement management for other staff working on assigned engagements

Required Qualifications:

  • BS in Computer Science, Engineering, or related field or equivalent work experience

  • Expert in web security, possessing extensive knowledge of vulnerabilities, along with the ability to identify and exploit them effectively.

  • 3+ years of experience in code review, application security testing, or web application development

  • Excellent written and verbal communication skills

  • Strong scripting skills (e.g. Python, Ruby, Perl)

  • Experience with cloud platforms, such as AWS, and knowledge of cloud security best practices

  • Familiarity with development technologies like Docker, CDK, Terraform, Java, Python, React, GraphQL, Javascript, JSON, REST, etc.

  • Must possess a high degree of integrity and confidentiality, as well as the ability to adhere to both company policies and best practices

  • Technical background in application development, networking/system administration, security testing, or related fields

  • Experience with both static application security testing (SAST) and dynamic application security testing (DAST) using various tools and techniques

Preferred Qualifications:

  • Preferred, but not required - one or more relevant certifications such as Offensive Security Web Assessor (OSWA), Offensive Security Web Expert (OSWE), Offensive Security Certified Professional (OSCP), Burp Suite Certified Practitioner, or AWS Certified Security Specialist.

At RSM, we offer a competitive benefits and compensation package for all our people.We offer flexibility in your schedule, empowering you to balance life's demands, while also maintaining your ability to serve clients. Learn more about our total rewards at https://rsmcanada.com/careers/life-at-rsm/rewards-and-benefits.html.

RSM does not tolerate discrimination and/or harassment based on race; colour; creed; sincerely held religious beliefs, practices or observances; sex (including pregnancy or disabilities related to nursing); gender (including gender identity and/or gender expression); sexual orientation; national origin; ancestry; familial or marital status; age; physical or mental disability; citizenship; political affiliation; medical condition (including family and medical leave); domestic violence victim status; past, current or prospective service in the Canadian uniformed service; Canadian Military/Veteran status; pre-disposing genetic characteristics or any other characteristic protected under applicable provincial employment legislation.

Accommodation for applicants with disabilities is available upon request in connection with the recruitment process and/or employment/partnership.RSM is committed to providing equal opportunity and reasonable accommodation for people with disabilities. If you require a reasonable accommodation to complete an application, interview, or otherwise participate in the recruiting process, please call us at 800-274-3978 or send us an email at careers@rsmus.com.

At RSM, an employee's pay at any point in their career is intended to reflect their experiences, performance, and skills for their current role. The salary range (or starting rate for interns and associates) for this role represents numerous factors considered in the hiring decisions including, but not limited to, education, skills, work experience, certifications, location, etc. As such, pay for the successful candidate(s) could fall anywhere within the stated range.

Compensation Range: $62,000 - $99,500

Individualsselected for this role will be eligible for a discretionary bonus based on firm and individual performance.