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Computer Science Jobs in Ontario (NOW HIRING)

... computer vision, and/or GenAI is an asset. • Advanced degrees (MSc, equivalent, or higher) in Statistics, Applied Mathematics, Mathematical Physics, Computer Science, or a related field is required ...

Bachelor's degree or equivalent in Data Analytics, Statistics, Mathematics, or Computer Science. * 4+ years of hands-on experience in data science and machine learning, delivering production-grade ML ...

Solid computer science fundamentals (data structures, algorithms, SQL) * Programming skills (Java, JavaScript, React, Go) * Strong problem-solving abilities * Strong teamwork and communication skills ...

Sr. Principal Research Scientist

Toronto, ON · On-site

CA$128K - CA$244K/yr

D. in Computer Science, Engineering, Mathematics or other relevant disciplines, ideally on the topic of Human-Computer Interaction, Artificial Intelligence, or a closely-related area * 15-25 years ...

Data Scientist

London, ON · On-site

CA$85K - CA$114K/yr

Master's Degree in Statistics, Data Science, Computer Science, or a related field * 4+ years of experience in SQL/Spark, R, Python * 4+ years of Experience building and applying machine learning or ...

Data Scientist

London, ON · On-site

CA$85K - CA$114K/yr

Master's Degree in Statistics, Data Science, Computer Science, or a related field * 4+ years of experience in SQL/Spark, R, Python * 4+ years of Experience building and applying machine learning or ...

Master's Degree in Statistics, Data Science, Computer Science, or a related field * 4+ years of experience in SQL/Spark, R, Python * 4+ years of Experience building and applying machine learning or ...

Bachelor's or Master's in a quantitative field (e.g., Computer Science, Statistics, Mathematics, Engineering) Condition of Employment: As a condition of employment and in order to comply with ...

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Computer Science information

See Ontario salary details

$20K

$67.5K

$141K

How much do computer science jobs pay per year?

As of Jun 9, 2026, the average yearly pay for computer science in Ontario is $67,538.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,500.00 and $94,000.00 per year, depending on experience, location, and employer.

What is the difference between Computer Science vs Software Developer?

AspectComputer ScienceSoftware Developer
Required CredentialsBachelor's or higher in CS or related fieldBachelor's in CS, Software Engineering, or related field often preferred
Work EnvironmentResearch labs, academia, tech companies, startupsTech companies, software firms, freelance projects
Industry UsageAcademic research, algorithm development, theoretical workBuilding, coding, testing software applications
Common Search/ComparisonFocuses on theoretical foundations and algorithmsFocuses on practical software creation and deployment

Computer Science and Software Developer roles often overlap, but Computer Science emphasizes theoretical foundations, algorithms, and research, while Software Developers focus on designing, coding, and maintaining software applications. Both roles require programming skills, but their primary focus and work environments differ.

What is computer science?

Computer science is the study of computers, computational systems, and how they process information. It covers a wide range of topics, including programming, algorithms, data structures, artificial intelligence, and software engineering. Computer scientists design and analyze software and hardware to solve problems and improve technology. The field is essential in many industries, from finance and healthcare to entertainment and research.

What Are Computer Science Jobs?

The computer science field provides a wide range of opportunities for technically talented individuals. Depending on your skills and interests, you can find computer science jobs as a software developer, hardware engineer, database administrator, computer systems analyst, network architect, information security analyst, or web developer. You need an analytical mind and strong technical skills to perform your job duties, which may be to develop, maintain, and troubleshoot computer systems, applications, or networks. Your responsibilities in a computer science job are often directly related to the business goals and outcomes of your employer.

What are the key skills and qualifications needed to thrive in a Computer Science role, and why are they important?

To thrive in a Computer Science role, you need strong programming skills, problem-solving abilities, and a degree in computer science or a related field. Familiarity with languages like Python, Java, C++, version control systems such as Git, and software development methodologies is often required. Analytical thinking, attention to detail, and effective teamwork are valuable soft skills that set candidates apart. These skills ensure you can design efficient solutions, collaborate on complex projects, and adapt to rapidly evolving technologies.

What are some common challenges computer science professionals face when working on collaborative software projects?

Computer science professionals often encounter challenges such as coordinating with team members across different disciplines, managing version control in shared codebases, and ensuring clear communication of technical concepts to non-technical stakeholders. Navigating conflicting priorities and integrating diverse components can also be demanding, especially in agile environments with tight deadlines. Strong collaboration skills, openness to feedback, and familiarity with team tools like Git and project management platforms can help address these challenges effectively.
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 job categories do people searching Computer Science jobs in Ontario look for? The top searched job categories for Computer Science jobs in Ontario are:
What cities in Ontario are hiring for Computer Science jobs? Cities in Ontario with the most Computer Science job openings:
Overhead Catenary System (OCS) CAD Designer

Overhead Catenary System (OCS) CAD Designer

Alstom

Toronto, ON • On-site

CA$70K - CA$90K/yr

Other

Medical, Life, Retirement

Posted 21 days ago


Alstom rating

7.5

Company rating: 7.5 out of 10

Based on 49 frontline employees who took The Breakroom Quiz

218th of 417 rated machine equipment manufacturers


Job description

Req ID:513534 

At Alstom, we understand transport networks and what moves people. From high-speed trains, metros, monorails, and trams, to turnkey systems, services, infrastructure, signalling and digital mobility, we offer our diverse customers the broadest portfolio in the industry. Every day, more than 80 000 colleagues lead the way to greener and smarter mobility worldwide, connecting cities as we reduce carbon and replace cars.

Could you be the full-time Overhead Catenary System (OCS) CAD Designer in Toronto, ON, we're looking for?


Your future role

Take on a new challenge and apply your mechanical and structural CAD expertise in a new cutting-edge field. You'll work alongside a collaborative and innovative team of professionals.

You'll play a key role in delivering design submissions for Overhead Catenary Systems (OCS), contributing to the advancement of sustainable transportation solutions. Day-to-day, you'll work closely with teams across the business (Engineering, Project Management, and Construction Management teams), coordinate with external stakeholders, and prepare 2D and 3D CAD/BIM OCS documents for review, and much more.

You'll specifically take care of preparing and reviewing OCS layouts and detailed cross-sections, but also support survey teams and manage Bill of Quantities (BOQ) elaboration and updates.

We'll look to you for:

  • Establishing and reviewing basic and detailed design drawings for the project

  • Integrating technical interface requirements from internal and external stakeholders

  • Preparing and submitting BIM format documents when applicable

  • Supporting architecture definition between subsystems to achieve optimal OCS design

  • Participating in collecting feedback (REX) on OCS designs

  • Ensuring technical compliance by reviewing supplier, subcontractor, and in-house designs


All about you

We value passion and attitude over experience. That's why we don't expect you to have every single skill. Instead, we've listed some that we think will help you succeed and grow in this role:

  • Completion of secondary school (high school diploma) is required

  • Bachelor's Degree in Engineering, Computer Science, or a similar field preferred

  • 4+ years experience in mechanical/structural CAD engineering

  • Proficiency in BIM/CAD software

  • Experience with OCS layout and cross-section design

  • Knowledge of Canadian standards and common practices (strongly desirable)

  • Fluent in English; a second language is appreciated

  • Strong communication and interpersonal skills

  • Analytical and critical thinking

  • Problem-solving ability and resilience


Things you'll enjoy Join us on a life-long transformative journey - the rail industry is here to stay, so you can grow and develop new skills and experiences throughout your career. You'll also:

  • Enjoy stability, challenges, and a long-term career free from boring daily routines

  • Work with new security standards for rail signalling

  • Collaborate with transverse teams and helpful colleagues

  • Contribute to innovative projects

  • Utilise our flexible and inclusive working environment

  • Steer your career in whatever direction you choose across functions and countries

  • Benefit from our investment in your development, through award-winning learning

  • Progress towards leadership or technical expert roles

  • Benefit from a fair and dynamic reward package that recognises your performance and potential, plus comprehensive and competitive social coverage (life, medical, pension)

Compensation

The expected compensation for this role is $70,000 - $90,000 CAD per year, plus benefits and eligibility for an annual performance bonus. Final compensation will be based on skills, experience, and internal equity.

Use of Artificial Intelligence in Hiring

We do not use artificial intelligence in the recruiting process for this role.

Interview Process & Candidate Communication

Candidates who participate in an interview for this role will be informed of the hiring decision within 45 days of their final interview date.

This job posting represents an existing vacancy.

You don't need to be a train enthusiast to thrive with us. We guarantee that when you step onto one of our trains with your friends or family, you'll be proud. If you're up for the challenge, we'd love to hear from you!

Important to note

As a global business, we're an equal-opportunity employer that celebrates diversity across the 63  countries we operate in. We're committed to creating an inclusive workplace for everyone.

If you require accommodation during the hiring process, please email us at "humanresources.accessibility@alstomgroup.com" while referring to the job requisition number, job title and location you applied to.

Job Type:Graduate Job


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