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Junior Computer Science Jobs in Ontario (NOW HIRING)

Tetra Tech

Civil-Structural Engineer, Junior

Mississauga, ON · On-site

CA$70K - CA$110K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Why Tetra Tech: At Tetra Tech, we are Leading with Science to solve the world's most complex ... Proficiency in computer-based design tools. Physical Requirements: * Ability to sit or stand as ...

Vangard, Inc.

Senior AI Scientist

Toronto, ON · On-site

You will also mentor junior data scientists and contribute to the growth of our AI safety research ... Bachelor's degree in Computer Science, Statistics, Applied Mathematics, or a related quantitative ...

Waabi

Research Scientist

Toronto, ON · On-site

CA$158K - CA$269K/yr

  • Medical

  • Dental

  • Vision

  • PTO

Qualifications: - Masters/PhD degree in Computer Science, AI, Machine Learning, Computer Vision ... junior researchers or engineers. - Proficiency in Pytorch, Rust, C++ and/or CUDA. The US yearly ...

Ontario 407

Senior Data Scientist

Woodbridge, ON · On-site

CA$120K - CA$165K/yr

They will have the expertise and knowledge to mentor more junior members while also having the ... A University degree in Engineering, Statistics, Mathematics, or Computer Science. * Graduate degree ...

New

Q-Block Computing

Junior Quantum Engineer

Ottawa, ON · On-site

$85K - $110K/yr

  • Medical

  • Dental

  • Vision

  • Life

Ottawa, ON (on-site) Employment type: Full-time Salary range: $85,000-$110,000 CAD per year About Q ... The commercialization and the science reinforce each other by design. About this role: The Junior ...

Q-Block Computing

Junior Quantum Engineer

Ottawa, ON · On-site

CA$85K - CA$110K/yr

  • Medical

  • Dental

  • Vision

  • Life

Ottawa, ON (on-site) Employment type: Full-time Salary range: $85,000$110,000 CAD per year About Q ... The commercialization and the science reinforce each other by design. About this role: The Junior ...

Inizio Engage

Bachelor's degree is required (science/business degree preferred) * 1-3 years of customer facing ... Computer literacy and proficient with Microsoft Office and Outlook * Valid driver's license and in ...

Intact Financial

Senior Data Scientist

Toronto, ON · Hybrid

  • Medical

  • Retirement

Coach and mentor junior members of the team * Lead and enforce data science best practices: coding ... Master's degree in a relevant discipline (computer science, mathematics, AI, engineering, or a ...

Evolver

Guide and support junior researchers and engineers to foster technical growth within the team ... D. in Computer Science, Engineering, Neuroscience, Robotics, or a related field. Experience: 5+ ...

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Showing results 21-40

All JobsComputer Science JobsJunior Computer Science JobsJunior Computer Science Jobs in Ontario

Junior Computer Science information

See Ontario salary details

$21K

$58K

$114.5K

How much do junior computer science jobs pay per year?

As of Aug 13, 2026, the average yearly pay for junior computer science in Ontario is $58,033.00, according to ZipRecruiter salary data. Most workers in this role earn between $38,500.00 and $65,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a junior computer scientist?

To thrive as a Junior Computer Scientist, you need a solid understanding of programming languages (such as Python, Java, or C++), algorithms, and data structures, typically supported by a bachelor’s degree in computer science or a related field. Familiarity with version control systems like Git, basic database management, and exposure to development environments are commonly expected. Strong problem-solving abilities, effective communication, and a willingness to learn are essential soft skills for this role. These skills and qualities enable junior computer scientists to contribute to team projects, adapt to new technologies, and efficiently solve real-world technical problems.

What is the difference between Junior Computer Science vs Junior Software Developer?

AspectJunior Computer ScienceJunior Software Developer
Required CredentialsDegree in Computer Science or related fieldDegree or coding bootcamp certification
Work EnvironmentAcademic, research, or entry-level tech rolesSoftware development teams, tech companies
Industry UsageUniversities, research labs, tech firmsSoftware companies, startups, IT departments
Common Search/ComparisonYesYes

Junior Computer Science roles typically focus on foundational knowledge, research, or academic settings, requiring a degree in computer science. Junior Software Developer positions are more application-oriented, involving coding and software creation within development teams. While both roles are entry-level, they serve different career paths within the tech industry.

What is a junior computer scientist?

A Junior Computer Scientist is an entry-level professional who typically holds a degree in computer science or a related field. They work under the supervision of senior staff to design, develop, test, and maintain software, algorithms, or systems. Their responsibilities may include coding, debugging, conducting research, and assisting with technical documentation. This role is often a starting point for those looking to advance in the field of computer science, offering valuable hands-on experience and opportunities to learn from more experienced colleagues.

What types of projects and responsibilities can a junior computer science professional expect in their first year?

As a Junior Computer Science professional, you can expect to work on a variety of foundational tasks such as debugging code, writing unit tests, and assisting with the development of new features under the supervision of more experienced team members. You may also participate in code reviews, collaborate with cross-functional teams like design and QA, and help maintain documentation. These hands-on experiences are designed to help you build technical skills, understand software development processes, and gradually take on more complex assignments as you gain confidence and expertise.
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 Junior Computer Science jobs in Ontario? For Junior Computer Science jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Junior Computer Science jobs in Ontario look for? The top searched job categories for Junior Computer Science jobs in Ontario are:
Junior Computer Science jobs near you
Infographic showing various Junior Computer Science 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 $58,033 per year, or $27.9 per hour.

Civil-Structural Engineer, Junior

Tetra Tech

Mississauga, ON • On-site

CA$70K - CA$110K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 14 days ago

Tetra Tech rating

6.4

Company rating: 6.4 out of 10

Based on 42 frontline employees who took The Breakroom Quiz

402nd of 447 rated engineering

Job description

The Opportunity:

Tetra Tech is adding a Junior Civil-Structural Engineer to our Power team based in Mississauga, Ontario.

Why Tetra Tech:

At Tetra Tech, we are Leading with Science to solve the world's most complex challenges.  Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world.  For over 50 years, we have been at the forefront of innovation and sustainability.  Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development.  Our work has improved more than 625 million lives around the world.

Your Impact:

Join Tetra Tech to make a real difference.  Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential - join us to advance your career while leaving a lasting legacy.

Position Summary:

We are currently seeking an Junior Civil-Structural Engineer for our Mississauga, Ontario office. This is an existing vacancy for which we are actively recruiting. To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Essential Job Functions:

  • Prepare engineering deliverables for equipment support structures, foundations, site grading, access roads, and site drainage.
  • Develop conceptual studies, plans, maps, and layouts for civil-structural projects.
  • Review and interpret topographic surveys and geotechnical investigation reports.
  • Perform technical calculations, material take-offs, and feasibility estimates.
  • Conduct field site inspections to monitor project progress and ensure compliance with design specifications.
  • Estimate project materials, equipment, and labor costs to support feasibility analysis.

Required Qualifications:

  • Bachelor's degree in Civil-Structural Engineering.
  • 1-3 years of related experience (co-op or work experience in electrical substations or transmission line projects is preferred).
  • Eligible for registration as a Professional Engineer in Training (EIT) in Ontario or another Canadian province.
  • Knowledge of civil/structural engineering principles, practices, and design methods.
  • Experience with STAAD.Pro, MathCAD, and/or PLS-CADD is an asset.
  • Proficiency in computer-based design tools.

Physical Requirements:

  • Ability to sit or stand as required and remain in a stationary position for at least 50% of the workday.
  • Frequent use of hands and fingers to handle, manipulate, or feel objects, including continuous operation of a computer and other standard office equipment such as calculators, copiers, and printers.

Work Environment / Environmental Factors:

  • The majority of work is performed in a professional office setting.
  • Periodic travel may be required and could involve limited exposure to extreme temperatures. Travel may include air travel, during which the employee may be required to remain seated for extended periods.

Additional Information

Tetra Tech offers comprehensive benefit options that allow employees to design a plan based on individual needs and assists in planning for long-term financial security. Available benefits include medical, dental and vision insurance, term life, disability, accidental death & dismemberment coverage, time off with pay, retirement plan, and an Employee Stock Purchase Plan.  

The salary range for this position is $70,000 to $110,000. Please note that Tetra Tech considers various factors in determining pay, including but not limited to: education, relevant and demonstrated work experience in the role, skills, geographic location, qualifications, certifications, and other competencies relevant to the needs of the business.

Life at Tetra Tech:

The perks of working at Tetra Tech include:

       Comprehensive and market-competitive benefits.

       Merit-based financial rewards.

       Flexibility and company-wide commitment to work/life balance.

       Collaborative team atmosphere that values the contributions of all employees.

       Learning and development opportunities for ongoing professional growth. 

About Tetra Tech:

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer.  All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sex, marital or familial status, status as a protected veteran, or any other characteristic protected by law.

Tetra Tech may use AI-enabled tools to screen, assess, and assist in selecting applicants for this position based on job-related criteria. However, a human decision-maker will decide who moves forward throughout every stage of the hiring process.

We invite applications from all interested parties.

Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:

LinkedIn: @TetraTechCareers

X (Twitter): @TetraTechJobs

Additional Information
  • Organization: 705 PWR

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