Mississauga, ON Full-time Salary not specified
Overview The Computer Control Specialist Engineer designs, integrates, verifies, and supports digital instrumentation and control systems used in CANDU nuclear generating stations. The work covers control computers, distributed control systems, plant computer systems, safety-critical systems, networks, cybersecurity, and I&C; architecture.
Responsibilities Develop computer control system architectures and specify digital control, plant process computer, human-machine interface, monitoring, and plant information systems.
Define system, functional, and interface requirements; prepare architecture diagrams and design documentation.
Evaluate safety-related computer systems and develop or review safety and software requirements, hazard analyses, FMEA, and reliability assessments.
Apply nuclear safety principles, including independence, defense in depth, diversity, redundancy, and fail-protected design.
Design communications interfaces across reactor, shutdown, turbine, process control, and emergency support systems.
Assess network segmentation, data flows, communication protocols, and cybersecurity boundaries.
Support digital modernization,



system integration, factory and site acceptance testing, and resolution of hardware and software integration issues.
Review software lifecycle activities, verification, validation, code reviews, configuration management, and software change control.
Investigate root causes and recommend corrective actions and plant improvements.
Qualifications Bachelor’s degree in electrical, computer, or software engineering.
Professional Engineer (P.Eng.) licence or eligibility for registration.
Experience in safety analysis, common-cause failure and diversity assessments, software hazard analysis, reliability analysis, and cybersecurity assessments.
Experience with digital control, DCS, PLC, safety PLC, SCADA, networked control, virtualized control, and real-time operating systems.
Knowledge of CANDU control systems, relevant CSA and international nuclear standards, CNSC REGDOCs, industrial networks, and cybersecure architecture.
Work arrangement The role is based in Mississauga, Ontario. AtkinsRéalis describes a hybrid working culture.

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📌 Computer Control Specialist Engineer (Ontario)
🏢 Skillhub Solutions
📍 Ontario