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Full Stack Intern Jobs in Markham, ON (NOW HIRING)

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 ... Hands-on experience in full-stack development: * HTML5, TypeScript, JavaScript, stylesheets ...

Fulfillment IQ

Senior Recruiter

Toronto, ON · On-site

Hybrid, Toronto based (3 days per week) Employment Type (Permanent/Contract/Part -time/Intern ... Own the full stack of the work, including the unglamorous parts. Scheduling, ATS hygiene, vendor ...

Fulfillment IQ

Senior Recruiter

Toronto, ON · On-site

Hybrid, Toronto based (3 days per week) Employment Type (Permanent/Contract/Part-time/Intern ... Own the full stack of the work, including the unglamorous parts. Scheduling, ATS hygiene, vendor ...

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Full Stack Intern information

What does a full stack intern do?

A Full Stack Intern assists in developing both the front-end and back-end components of web applications. Their responsibilities typically include writing code, debugging issues, collaborating with team members, and learning to work with various programming languages and frameworks. They gain hands-on experience with databases, servers, APIs, and user interfaces, contributing to the full software development lifecycle. The role is designed to help interns learn industry best practices and prepare for a career as a full stack developer.

What are the key skills and qualifications needed to thrive as a full stack intern, and why are they important?

To thrive as a Full Stack Intern, you need a solid understanding of both front-end (HTML, CSS, JavaScript) and back-end (such as Node.js, Python, or Java) development, often demonstrated through coursework or personal projects. Familiarity with frameworks like React or Angular, version control systems like Git, and exposure to databases are typically expected. Strong problem-solving skills, eagerness to learn, and effective teamwork make candidates stand out in this role. These skills and qualities are vital for efficiently contributing to real-world software projects and adapting quickly within dynamic development teams.

What are some typical projects and responsibilities for a full stack intern during their internship?

As a Full Stack Intern, you can expect to work on a variety of projects that span both front-end and back-end development. Typical responsibilities may include building user interfaces, developing APIs, troubleshooting bugs, and collaborating with senior developers to deploy features. Interns often participate in daily stand-ups, code reviews, and may be assigned to a specific product or feature team. This hands-on experience helps interns understand the complete software development lifecycle and develop skills in both client-side and server-side technologies.
What cities near Markham, ON are hiring for Full Stack Intern jobs? Cities near Markham, ON with the most Full Stack Intern job openings:
Full Stack Intern jobs near you
Infographic showing various Full Stack Intern job openings in Markham, ON as of August 2026, with employment types broken down into 1% Internship, 84% Full Time, 10% Part Time, 4% Contract, and 1% Nights. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Software Developer Intern

Perseus Group

Markham, ON

CA$22.50 - CA$27.50/hr

Full-time

Posted 18 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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