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Intern Javascript Developer Jobs in Mississauga, ON

Perseus Group

Software Developer Intern

Markham, ON

CA$22.50 - CA$27.50/hr

The Software Developer Intern works in a Scrum team to build high-performing, resilient, and ... HTML5, TypeScript, JavaScript, stylesheets (Angular an asset) * .NET * SQL query * Object-Oriented ...

Trend Micro

Malware Research Intern

Toronto, ON

Reverse-engineer malware samples to identify malware communication mechanisms and analyze malware ... Familiarity with scripting languages such as Python, Ruby, Perl, JavaScript, PowerShell or Bash.

Vosyn

WordPress Developer - Internship

Etobicoke, ON · On-site +1

$32/hr

For greater clarity, NO cash in-hand (in hourly rate or salary) will be paid to the Intern. Instead ... Proficiency in HTML, CSS, JavaScript, and PHP, with a solid understanding of responsive design.

All JobsIntern Javascript Developer JobsIntern Javascript Developer Jobs in Mississauga, ON

Intern Javascript Developer information

What are the key skills and qualifications needed to thrive as an intern Javascript developer?

To thrive as an Intern Javascript Developer, you need a solid understanding of JavaScript fundamentals, HTML, CSS, and basic web development concepts, often gained through coursework or self-study. Familiarity with tools like version control systems (e.g., Git), browser developer tools, and popular JavaScript libraries or frameworks is highly valued. Strong problem-solving abilities, eagerness to learn, and good communication skills help interns adapt quickly and contribute effectively to team projects. These strengths enable interns to develop real-world coding experience, work efficiently in collaborative environments, and grow into more advanced developer roles.

What types of projects or tasks can I expect to work on as an intern Javascript developer?

As an Intern Javascript Developer, you can expect to assist with developing and testing frontend features, fixing bugs, and building user interfaces using JavaScript, HTML, and CSS. You may also support senior developers by helping to maintain codebases, participate in code reviews, and contribute to team meetings or brainstorming sessions. Projects often include real-world web applications, where your code contributions will have a direct impact. This hands-on experience is a great opportunity to apply your skills, collaborate with experienced developers, and learn industry best practices in a supportive environment.

What is an intern Javascript developer?

An Intern JavaScript Developer is an entry-level role where aspiring developers gain hands-on experience in web development using JavaScript, HTML, CSS, and related technologies. Interns typically assist in coding, debugging, testing, and supporting front-end or full-stack applications under the guidance of senior developers. This role helps build foundational programming skills, familiarity with frameworks like React or Node.js, and an understanding of best development practices. Internships are a great way to gain practical experience, improve coding skills, and transition into a full-time development role.

What are the most commonly searched types of Javascript Developer jobs in Mississauga, ON? The most popular types of Javascript Developer jobs in Mississauga, ON are:
What are popular job titles related to Intern Javascript Developer jobs in Mississauga, ON? For Intern Javascript Developer jobs in Mississauga, ON, the most frequently searched job titles are:
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Intern Javascript Developer jobs near you
Infographic showing various Intern Javascript Developer job openings in Mississauga, ON as of August 2026, with employment types broken down into 84% Full Time, 2% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Software Developer Intern

Perseus Group

Markham, ON

CA$22.50 - CA$27.50/hr

Full-time

Posted 19 days ago

Job description

THE POSITION

The successful Software Developer Intern works in our Markham, Ontario office and reports to our Solutions Architect for the homebuilding industry's leading-edge enterprise software product.

The Software Developer Intern works in a Scrum team to build high-performing, resilient, and manageable web-based ERP software for homebuilders, using AI-assisted development throughout the SDLC. Responsibilities include:

  • Study and understand the application's functionality, workflow, and design.
  • Work with the team to build a new product module end-to-end using AI-assisted development tools under architectural guidance.
  • Assist in setting up, testing, and maintaining MCP servers/connectors that power AI-assisted development for the team, including configuration, documentation, and usage governance.
  • Expand automated test coverage - unit, integration, and end-to-end (Playwright) - and wire tests into Azure DevOps CI/CD pipelines.
  • Author and refine reusable AI context: rules files, prompts, and agentic workflows for repeatable development and review tasks.
  • Evaluate the quality and reliability of AI-assisted output against real coding tasks; iterate to improve.
  • Document processes and provide recommendations for scaling AI-assisted development and automation across the team.

QUALIFICATIONS AND SKILLS

  • Able to work from the Markham, Ontario office.
  • Understanding of software requirements and the software development lifecycle.
  • Experience building multi-tier, distributed web solutions with an emphasis on Responsive Design.
  • Understanding of development best practices in a multi-developer team using a shared code repository (Git): branching, pull requests, code review.
  • Hands-on experience in full-stack development:
    • HTML5, TypeScript, JavaScript, stylesheets (Angular an asset)
    • .NET
    • SQL query
    • Object-Oriented Design
    • Test-Driven Development; ability to write unit and integration tests
  • Familiarity with AI coding assistants and prompt engineering (asset).
  • Exposure to test automation frameworks such as Playwright (asset).
  • Exposure to Azure DevOps (Repos, Pipelines) (asset).

Salary Range (Ontario & BC Only):

The estimated base salary range for this role is CAD$22.50 - CAD$27.50 per hour. We include salary ranges in job postings only where required by applicable pay transparency laws, based on the jurisdictions in which the role may be performed. The posted range is a good faith estimate and reflects factors that are subject to change. Final offer amounts may vary based on job-related factors, including work location, candidate experience and expertise, and other relevant considerations.We recognize the value and importance of diversity and inclusion in our communities and in the workplace. We celebrate diversity and one of our goals as an employer is to create an inclusive work environment for all employees. We are an equal opportunity employer and do not discriminate against any employee or applicant because of race, religion, sex, sexual orientation including gender identity or expression, pregnancy, national origin, age, marital status, veteran status, disability status, or any other category or characteristic protected by law.Applicants with disabilities who would like to require a reasonable accommodation related to any part of the application process may contact us at Perseus_HR@constellationhbs.com.#NX

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