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Computer Science Internship Jobs in Ontario (NOW HIRING)

Ciena

AI-Enabled Software Test Engineer - New Grad

Ottawa, ON

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... Computer Science or Electrical Engineering, or equivalent. * Experience: 1+ years of experience including internships in software testing, quality assurance, or a related field, with a focus on AI ...

CMiC

Software Engineer Co-op

Toronto, ON

CA$20 - CA$24/hr

... Computer Science, Software Engineering, Computer Engineering, Artificial Intelligence, Data Science, Machine Learning, or a related field, and eligible for a co-op/internship placement * Preferred ...

CMiC

Software Engineer Co-op

Toronto, ON · On-site

CA$20 - CA$24/hr

... Computer Science, Software Engineering, Computer Engineering, Artificial Intelligence, Data Science, Machine Learning, or a related field, and eligible for a co-op/internship placement * Preferred ...

New

Rakuten Shop Style

Marketing Analyst

Toronto, ON

  • Medical

  • Dental

  • Vision

  • PTO

Bachelor's degree in computer science, Economics, Statistics, or a related field required * 2-5 years of non-internship experience in data analytics, data science, or a related role (this is a mid ...

Vosyn

WordPress Developer - Internship

Etobicoke, ON · On-site +1

$32/hr

Hourly (paid in equity compensation equivalent to CAD $32-35/hour) The Vosyn internship is unique. Remuneration is equivalent to $32.00 CAD per hour payable in common shares of the Corporation at the ...

Q-Block Computing

Mechanical CAD Engineering Intern

Ottawa, ON

$18 - $25/hr

  • Medical

  • Dental

  • Vision

  • Life

Co-op / Internship Duration: 4-8 months (depending on academic program) Hours: 35-40 hours per week ... Commercialization and science reinforce each other by design. About this role: The Mechanical CAD ...

Q-Block Computing

Mechanical CAD Engineering Intern

Ottawa, ON · On-site

CA$18 - CA$25/hr

  • Medical

  • Dental

  • Vision

  • Life

Co-op / Internship Duration: 48 months (depending on academic program) Hours: 3540 hours per week ... Commercialization and science reinforce each other by design. About this role: The Mechanical CAD ...

Wood Plc

TAC Internship 2022

Richmond Hill, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

Wood Plc

TAC Internship 2022

Burlington, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

Wood Plc

TAC Internship 2022

Mississauga, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

Wood Plc

TAC Internship 2022

Cambridge, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

Wood Plc

TAC Internship 2022

London, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

Wood Plc

TAC Internship 2022

Oakville, ON

... Internship(s) . If you thrive on challenges in a fast paced environment, this is the opportunity ... scientists. * A strong mentoring culture, with each hire assigned a dedicated mentor, a new hire ...

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Showing results 41-60

All JobsComputer Science JobsComputer Science Internship JobsComputer Science Internship Jobs in Ontario

Computer Science Internship information

See Ontario salary details

$9

$22

$48

How much do computer science internship jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for computer science internship in Ontario is $22.11, according to ZipRecruiter salary data. Most workers in this role earn between $12.02 and $25.48 per hour, depending on experience, location, and employer.

What do you do as a computer science intern?

A computer science intern typically assists with software development, coding, testing, and debugging projects. They may work with programming languages like Python, Java, or C++, and often collaborate with teams to gain practical experience in software engineering and problem-solving. Internships usually involve learning industry tools and following project deadlines under supervision.

What is the difference between Computer Science Internship vs Software Developer Intern?

AspectComputer Science InternshipSoftware Developer Intern
Required CredentialsTypically pursuing or recent graduate in CS or related fieldSame as CS internship, often students or recent grads
Work EnvironmentVaries across tech companies, research labs, startupsPrimarily software development teams in tech firms
Employer & Industry UsageUsed across academia, industry, research projectsPrimarily in software development companies and tech industry
Common Search & Comparison IntentUnderstanding internship opportunities in CSComparing software development internship roles

Both Computer Science Internships and Software Developer Internships target students or recent graduates interested in tech. While CS internships may include research, data analysis, or broader technical roles, Software Developer Internships focus specifically on coding and software creation. The choice depends on your career goals and the specific skills you want to develop.

Which computer science internship is best for a computer science student?

The best computer science internship for a student depends on their interests and career goals, but generally, internships at reputable tech companies or startups that offer hands-on experience with programming, software development, or data analysis are valuable. Look for opportunities that provide mentorship, skill development, and exposure to real-world projects, often requiring proficiency in languages like Python, Java, or C++ and familiarity with tools such as Git or cloud platforms.

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

To thrive as a Computer Science Intern, you generally need foundational knowledge in programming, algorithms, and data structures, often supported by progress toward a computer science degree. Familiarity with coding languages such as Python, Java, or C++, as well as experience using version control systems like Git, is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help interns stand out in collaborative environments. These skills and qualities are essential because they enable interns to contribute meaningfully to projects, adapt to new technologies, and work efficiently within a development team.

What internships should I apply for in computer science?

Computer science internships are available in software development, data analysis, cybersecurity, and machine learning. Applicants should focus on roles that match their skills, gain experience with programming languages like Python or Java, and consider certifications or projects that demonstrate their abilities. Internships at tech companies, startups, or research labs provide valuable industry experience and networking opportunities.

What types of projects does a computer science intern typically work on, and how much autonomy can I expect?

Computer Science interns often contribute to real-world projects such as developing new software features, debugging code, automating processes, or supporting infrastructure. While the level of autonomy varies by company, interns are generally given meaningful tasks and encouraged to collaborate with senior engineers and cross-functional teams. You'll likely participate in code reviews, agile sprints, and team meetings, gaining hands-on experience and feedback. Many organizations assign mentors to guide interns, helping them balance independence with structured learning and support.

What are internship opportunities in computer science?

An internship in computer science provides on-the-job training for students who study computer science. Your duties in this program depend on the focus on the internship. Some interns get experiencing coding and developing software, applications, or website user interfaces. As an intern, you work under the direction of programming and development professionals. Your responsibilities include writing lines of code, testing and debugging software, learning computer languages in a realistic setting, and functioning as part of a team. Other computer science internships focus on providing technical support, cybersecurity services, or administration services as part of an IT team.

What is a computer science internship?

A computer science internship is a temporary position that allows students or recent graduates to gain practical experience in the field of computer science. Interns typically work on real-world projects, assisting with programming, software development, data analysis, or IT support under the supervision of experienced professionals. These internships provide valuable hands-on skills, networking opportunities, and insight into potential career paths within technology industries.
More about Computer Science Internship jobs

What are the most commonly searched types of Computer Science jobs in Ontario?

The most popular types of Computer Science jobs in Ontario are:

What are popular job titles related to Computer Science Internship jobs in Ontario?

For Computer Science Internship jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Computer Science Internship jobs in Ontario look for?

The top searched job categories for Computer Science Internship jobs in Ontario are:

What cities in Ontario are hiring for Computer Science Internship jobs?

Cities in Ontario with the most Computer Science Internship job openings:

Computer Science Internship jobs near you
Infographic showing various Computer Science Internship job openings in Ontario as of August 2026, with employment types broken down into 1% Internship, 1% As Needed, 73% Full Time, 22% Part Time, 2% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $45,979 per year, or $22.1 per hour.

Graduate Quant Developer

Squarepoint Capital

London, ON • On-site

Full-time

Re-posted yesterday

Job description

Please only apply to the one job you feel best fits your skillset and experience. If our team feels you are better suited for another role, we will reach out about the alternate opportunity.

Position Overview:

Squarepoint is seeking talented, curious, and selfdriven graduatelevel candidates who are eager to apply strong quantitative and computational foundations in a challenging and innovative environment at the intersection of technology and investment research.
 
As a Graduate Quant Developer, you will work on the front line of our quantitative research business, collaborating closely with quantitative researchers and technologists to design, build, and maintain scalable, productiongrade systems that directly support alpha generation and investment decisionmaking. This role is designed to support earlycareer growth through handson development, close collaboration, and continuous learning in a highly collegiate, highperformance environment.
 
Role and Responsibilities
  • Apply quantitative reasoning and software engineering skills to support investment research and trading
  • Learn to translate business and research requirements into scalable, maintainable data processing workflows
  • Work closely with quantitative researchers to design and implement efficient workflows for alpha generation
  • Contribute to datadriven analytics and tooling across a wide range of asset classes
  • Develop, extend, and maintain libraries, tools, and frameworks used by researchers and traders globally
  • Collaborate closely with peers across our global Investment and Technology departments
  • Gradually take ownership of technical components and contribute ideas and solutions with direct commercial impact
Required Qualifications
  • Degree in a quantitative discipline (e.g. Mathematics, Physics, Engineering, Computer Science, or similar) with a strong interest in computational and softwaredriven problem solving
  • Proficiency in at least one of our core languages: Python, C++, or KDB+/q
  • Prior exposure to software development in a commercial, academic, or research environment, evidenced through internships, academic projects, work experience, or personal projects
  • Familiarity with Linux and version control systems (e.g. git)
  • Ability to work effectively with AI tools and systems, including demonstrable experience using them collaboratively to enhance software development, data analysis, or research workflows
  • Clear written and verbal communication skills
  • Strong curiosity, motivation to learn, and willingness to develop new skills
  • Ability to work effectively in a fastpaced, collaborative team environment
Nice to Have
  • Proficiency in more than one of our core programming languages
  • Exposure to quantitative finance, trading, or financial markets through coursework, projects, or internships
  • Previous experience in a financial services or technologydriven environment
  • Handson experience using git and Linux in teambased or academic projects

Apply