Senior Computer Systems Engineer

Location: Mississauga, Ontario
Employment Type: Permanent
Work Model: Hybrid – 3 days per week onsite
 

Position Overview

Our client is expanding its Computer Systems Engineering capability to support major CANDU nuclear programs. This position is intended for a senior engineer who can operate independently, provide technical leadership to junior staff, and contribute to the design and modernization of safety-critical computerized control and monitoring systems.

The successful candidate will work in a highly regulated, multidisciplinary nuclear engineering environment, contributing to foundational preliminary design work as Monark progresses toward detailed engineering.

Key Responsibilities

• Perform conceptual and preliminary design of computerized safety, control, and monitoring systems, establishing system requirements, architecture, technologies, and performance/reliability expectations.
• Evaluate digital I&C products and establish appropriate processes and procedures for software design, development, verification, and validation.
• Execute software engineering activities including requirements specification, software design descriptions, coding, verification, testing, and technical documentation.
• Develop software and scripts across applicable programming languages, platforms, and environments, including:
  • IEC 61131-3 languages
  • C / C++
  • Varian / SSCI-890 / PDP11 Assembler
  • Fortran
  • Pascal
  • Visual Studio
  • LabVIEW
  • XML
  • Photon
• Define requirements and develop test/development tools used in the production and validation of safety-critical software.
• Prepare and maintain Computer Engineering documentation including software requirements specifications, software design descriptions, software manuals, and supporting technical documents.
• Develop engineering guides, procedures, and work practices aligned with applicable international standards for nuclear safety software.
• Apply relevant nuclear/I&C codes and standards to design and engineering activities.
• Coordinate technical activities with clients, suppliers, vendors, and multidisciplinary engineering teams.
• Provide technical leadership, coaching, and guidance to junior and intermediate engineers.
• Prepare and deliver effective technical presentations.
• Independently manage assigned engineering work, including priorities, schedules, budgets, execution, and progress reporting.
• Support delivery of high-quality engineering outputs within a safety-driven and highly regulated environment.

Qualifications & Experience

• Honours degree in Computer Engineering, Electrical Engineering, or a relevant engineering discipline from a recognized university.
• Significant experience in computerized controls, I&C, safety systems, or safety-critical software engineering.
• Nuclear industry experience is mandatory.
• Targeting approximately 12–15+ years of relevant experience for the seniority required by the team.
• Demonstrated experience with safety system and/or control system design and testing.
• Experience applying nuclear/I&C standards, with relevant indicators including:
  • IEC 61508
  • IEC 60880
  • IEC 61226
  • IEC 62138
  • CSA N290.14
  • CSA N290.7
• Engineering/software development background within environments such as nuclear I&C, industrial controls, manufacturing, robotics, or other relevant computerized control applications.
• Previous technical leadership, team leadership, coaching, or mentoring experience.
• Experience within an operating nuclear power station and/or CANDU environment is highly desirable.
• Experience with nuclear power plant I&C modernization methodologies and processes is an asset.
• Familiarity with CANDU process, safety, or safety-related I&C system functions, configurations, and equipment is an asset.
• Familiarity with nuclear/industrial QA programs and applicable CSA, IEEE, and related engineering codes and standards is an asset.
• Strong technical analysis and engineering problem-solving capabilities.
• Ability to develop practical solutions to complex engineering problems.
• Strong leadership, interpersonal, and customer-facing capabilities.
• Excellent written and verbal communication skills.
• Ability to work effectively within a large multidisciplinary engineering environment.

Professional Registration

P.Eng. in Ontario is highly desirable / preferred based on client discovery. The original job description identifies Ontario P.Eng. registration as a requirement; however, client qualification notes identified it as a nice-to-have. Final requirement status to be confirmed with the client.