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AtkinsRéalis

Senior Plant Controls Systems Engineer

Mississauga, ON, Canada

Job type: Full-time
Experience: Minimum 12 years of experience in nuclear power generation or related industries
Posting language: English
Posted: Sep 29, 2026

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Original job description

Job Description

Overview

The Computer Systems Engineering department is responsible for digital instrumentation and control equipment for projects involving control, monitoring, and operator displays in the nuclear island for our existing customers and new builds. The department is responsible for digital system design, equipment selection and procurement, and all software activities.

Your role

Acts as project technical lead, has prime technical and commercial interface with the client and internal engineering and commercial groups on projects of substantial scale and complexity.
Participate in conceptual design of safety/control systems to define system requirements, computer system architecture/design, product /tool technologies and evaluate system performance and reliability.

Evaluate computer vendor products and prepare procedures/guides for implementing such products into computer software design, development and V&V processes.
Manage assigned work effectively, including prioritizing, executing, managing schedule and budget and reporting to meet project goals

Preparation of system/software change request for modifications to existing systems/software

Prepare requirements and develop tools for test/development systems as needed for production of safety critical software

Execute software engineering tasks including software requirements specification, software design description, coding, verification, testing and documentation

Asist in planning activities associated with design, verification and testing of computerized safety/control systems

Develop software and scripts using a variety of programming languages/toolsets/environments including, but not limited to IEC61131-3 languages, C C++ Visual Studio, Labview, XML.

Test script development using in-house developed scripting languages for software/system V&V testing

Update and/or prepare computer engineering design documents including SRS/SDD and software manuals

Interface with various engineering disciplines, suppliers, and other divisions within the company

About you

Honours degree in a relevant field of engineering from a university of recognized standing. Professional Engineering license preferred.
Minimum 12 years of experience in nuclear power generation or related industries
Experience with industry and/or international I&C/software standards is considered an asset
Strong background in computer hardware is considered an asset.
Demonstrate good technical skills and problem-solving capabilities and be able to seek practical solutions to engineering problems.
Demonstrate good interpersonal skills and the ability to work in a multidisciplinary team environment.
Excellent written and oral communication skills.

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. Find out more.

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.

Find out more.

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.

Appropriate accommodation will be provided upon request throughout the recruitment and hiring process as required by Company policy and the Accessibility for Ontarians with Disabilities Act (AODA).

Successful applicants will be notified about AtkinsRéalis’ accommodation policies at the time the employment offer is extended, and the information will be shared with new personnel during the onboarding process.

Worker Type

Employee

Job Type

Regular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

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More about this job

Responsibilities

Acts as the project technical lead for digital instrumentation and control systems, managing the full lifecycle from conceptual design to software verification and validation. Interfaces with clients and internal engineering groups to ensure project goals are met within budget and schedule constraints.

Requirements

Requires an honours degree in a relevant engineering field and a minimum of 12 years of experience in nuclear power generation or related industries. A professional engineering license is preferred, along with strong technical skills in computer hardware and software development.

Skills

Project technical lead
Digital instrumentation and control
System design
Software engineering
IEC61131-3
C
C++
Visual Studio
Labview
XML
V&V testing
Requirements specification
Problem-solving
Interdisciplinary collaboration
Technical documentation
Nuclear engineering

Benefits

Competitive compensation
Employee recognition
Flexible benefits
Training and professional development
Hybrid working culture
Generous time-off policies

Visa sponsorship

Not detected in the job text

Keywords

Nuclear island
Instrumentation and control
Digital system design
Software design description
Coding
Verification and validation
IEC61131-3
C
C++
Visual Studio
Labview
XML
Test script development
Computer hardware
Nuclear power generation
Engineering design documents
Project management
Technical interface
Safety critical software
System architecture
Professional engineering license
Multidisciplinary team
AtkinsRéalis

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