Mississauga, On Physicist Jobs – 19 Openings This Week

Junior Reactor Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Windows
- Data entry
- Linux
Diagnostic Physicist, X-ray Spectroscopy
Daedal Systems —Toronto, ON
- $150,000–$250,000 a year
- Full-time
- Engineering
- Maintenance
- Master's degree
Quick apply
Radiation Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Doctoral degree
- Engineering
- Master's degree
Diagnostic Physicist
Daedal Systems —Toronto, ON
- $120,000–$180,000 a year
- Full-time
- Engineering
- Maintenance
- Master's degree
Quick apply
8d
Reactor Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Windows
- Master's degree
- C++
Physicist / Engineering Physicist
Communications and Power Ind. Canada Inc —Georgetown, ON
- Engineering
- Data analysis skills
- Research
Quick apply
Senior Radiation Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Microsoft Office
- Master's degree
- C++
Specialist Radiation Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Doctoral degree
- Engineering
- Microsoft Office
Senior Reactor Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Windows
- Master's degree
- C++
Research Assistant (SRI) - Physical Sciences - Regular Full-time 2026-16989
Sunnybrook Health Sciences Centre —Toronto, ON
- Full-time
- Computer Science
- Engineering
- System design
Quick apply
Medical Physicist -CVH PRCC Physics
Trillium Health Partners —Mississauga, ON
- $76.46–$101.77 an hour
- Full-time
- Doctoral degree
- Research
- Master's degree
Senior Health Physicist
AtkinsRéalis —Mississauga, ON
- Full-time
- Hybrid work
- Bachelor's
- Team management
- Training & development
Senior Air Quality Specialist - Infrastructure
Onterris —Oakville, ON
- Full-time
- Engineering
- Business development
- Team management
Post-Doctoral Fellow (SRI) - Physical Sciences - Temporary Full-time 2026-16394
Sunnybrook Health Sciences Centre —Toronto, ON
- Temporary
- Computer science
- Doctoral degree
- Computer Science
- Dental care
Quick apply

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Diagnostic Physicist, X-ray Spectroscopy
Daedal Systems —Toronto, ON
You will own spectroscopy as a discipline and lead the full lifecycle of Daedal's spectroscopic diagnostics from concept design, product development,…
$150,000–$250,000 a year
Quick apply
Diagnostic Physicist
Daedal Systems —Toronto, ON
You will work autonomously on several diagnostics and support the full lifecycle of Daedal's diagnostics from concept design, product development,…
$120,000–$180,000 a year
Quick apply
8d

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Research Eng - Physicist (SRI) - Physical Sciences - Regular full-time 2026-18033
Sunnybrook Health Sciences Centre —Toronto, ON
This position combines hands-on software development, medical image analysis, data integration, and technical coordination within a clinically translational…
Quick apply
Plasma Physicist
NordSpace Corp —Markham, ON
Own the physics content of design reviews, verification and validation plans, and qualification test reports, and support anomaly investigations and root-cause…
$105,000–$135,000 a year
Quick apply
14d

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Junior Reactor Physicist

AtkinsRéalis -
Mississauga, ON

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Job details

Full-time

Qualifications

Windows
Fortran
Application development
Report and presentation preparation
Written report writing
Physics
Data entry
Technical writing
Linux

Full job description

##Overview

Join AtkinsRéalis' Reactor Core Physics team and contribute to the future of nuclear engineering and innovation. As a Junior Reactor Physicist, you will support the design of new CANDU nuclear power plants and the safe operation of existing domestic and international facilities. Working alongside experienced specialists, you will develop technical expertise while contributing to meaningful engineering projects that help shape the energy industry.

##Your Role

Perform reactor physics analyses to support reactor design, operation, and safety activities.
Prepare input data and execute reactor physics computer codes for assigned analyses.
Collate and evaluate results from multiple technical studies.
Document analytical work in technical notes and reports.
Present technical findings and recommendations at meetings.
Develop, adapt, and modify FORTRAN-based computer programs for specialized applications.
Support project delivery while maintaining quality, budget, and schedule requirements.

##About You

A Relevant honors degree from a university of recognized standing in Physics or Nuclear Engineering or equivalent; reactor physics experience and/or background is a strong asset.
Proficiency in reactor physics, Physics, Nuclear Engineering, or a related discipline.
Proficiency in computer environments, with experience using Linux and Windows systems considered an asset.
Proficiency in computer programming, particularly FORTRAN.
Ability to communicate effectively through technical writing and presentations.
Ability to work collaboratively, manage changing priorities, and demonstrate initiative in a team environment.

##Rewards & Benefits

Explore the rewards and benefits that help you thrive – at every stage of your life and your career at AtkinsRéalis in Canada.
Enjoy competitive compensation, employee recognition, and a brilliant range of flexible benefits you can tailor to your health, wellbeing, financial and lifestyle needs.
Make the most of diverse opportunities for training and professional development to grow your skills and expertise.
And take advantage of our hybrid working culture and generous time-off policies to balance a fulfilling career with your personal life.
Be rewarded.

##About AtkinsRéalis

We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

##Additional Information

AtkinsRéalis cares about your privacy. AtkinsRéalis and other subsidiary or affiliated companies of AtkinsRéalis (referred to throughout as "AtkinsRéalis") are committed to protecting your privacy. Please consult our Privacy Notice on our Careers site to know more about how we collect, use, and transfer your Personal Data.
By submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice en/site-services/privacy-statement.

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physicist jobs in mississauga, on

Junior Reactor Physicist

Diagnostic Physicist, X-ray Spectroscopy

Radiation Physicist

Diagnostic Physicist

Reactor Physicist

Physicist / Engineering Physicist

Senior Radiation Physicist

Specialist Radiation Physicist

Senior Reactor Physicist

Research Assistant (SRI) - Physical Sciences - Regular Full-time 2026-16989

Medical Physicist -CVH PRCC Physics

Senior Health Physicist

Senior Air Quality Specialist - Infrastructure

Post-Doctoral Fellow (SRI) - Physical Sciences - Temporary Full-time 2026-16394

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