Sr. Draftsperson - Mechanical

Location: Bowmanville

Status:  Contract (Up to 24 Months)

Working Conditions:

On-site
Education Level:  2-Year Diploma
Base

Location:

Bowmanville, ON

Shift:  Days
Travel:  10%
Final date to receive applications:  June 10, 2026
Salary Range:  $42.82 - $70.06 Per Hour

Job Overview
Ontario Power Generation (OPG) seeks a dynamic, strategic and results‑driven professional for the role of Sr. Draftsperson – Mechanical. Reporting to the Manager Design Engineering, this position will prepare mechanical drawings and sketches for equipment and piping systems to support design, procurement, fabrication, and installation at a nuclear generating station using CAD tools.

Key Accountabilities

Prepare and revise mechanical CAD drawings to depict modifications to established design schemes and ensure drawings include complete, accurate details such as piping, valves, fittings, instrumentation locations, erection dimensions, and pipe supports, consistent with recorded design precedent and specified change conditions.

Plan and execute assigned drawing/production work by obtaining and validating reference data, reviewing instructions, determining an efficient work approach, confirming scope and level of required detail, and escalating conflicts, missing details, or unresolved production issues to the supervisor.

Perform required technical calculations using algebra, geometry, trigonometry, and specified formulae to support drawing development and ensure technical accuracy.

Coordinate with internal stakeholders and other work groups to clarify requirements, resolve technical issues, and obtain missing or conflicting information to enable completion of drawing packages.

Participate in plant walkdowns to confirm field conditions and support configuration management by ensuring drawings reflect current and as‑built plant configuration and approved changes.

Prepare Bills of Material (BOMs) and material lists by compiling descriptions, manufacturer/make, catalog numbers, code markings, and quantities for items shown on drawings, leveraging catalogues and passport (or equivalent systems) to ensure completeness and traceability.

Operate and support CAD plotting equipment by loading drawing paper as required and assisting with routine plotter issues to maintain reliable output and minimize downtime.

Provide CAD workstation guidance and demonstrations to internal and external personnel by explaining workstation operation, equipment use, and operating techniques to support effective utilization.

Conduct self‑checks and quality reviews of work products to prevent errors, identify discrepancies early, and ensure drawings and associated deliverables meet drafting, technical, and document control standards.

Work safely and promote the health, safety, and well‑being of self and others by following technical/operating procedures and standards and contributing to the development of safe technical/operating solutions to problems.

Qualifications

Diploma in mechanical engineering technology.

At least 4 years of experience producing and revising mechanical CAD deliverables for industrial/station facility projects.

Proven capability developing detailed piping system drawings and layouts, including valves, fittings, instruments, supports, and erection dimensions, in accordance with project and client standards.

Experience participating in plant or field walkdowns, verifying as‑built conditions, and incorporating field data into controlled design documents.

Ability to gather, validate, and apply reference information from records, standards, and stakeholders, confirming scope, requirements, and drawing limits before execution.

Competence performing required mechanical calculations using algebra, geometry, trigonometry, and prescribed formulas.

Strong communication and teamwork skills to resolve drafting/design questions, elevate conflicts or missing details, and coordinate inputs across multiple disciplines.

Experience preparing BOMs and material lists to support procurement and fabrication, with familiarity with catalog-based identification and procurement systems such as passport.

Ability to produce civil engineering design deliverables using CAD tools.

Strong commitment to nuclear safety culture, including conservative decision‑making, procedural adherence, and accountability.

The successful candidate will exhibit uncompromising integrity and commitment to upholding corporate values and the OPG Code of Business Conduct.

OPG is committed to fostering an inclusive, equitable, and accessible environment. If you require accommodation during the selection process, please contact

OPG is committed to employment equity. Applicants from equity‑seeking communities—including Indigenous Peoples, racialized persons, persons with disabilities, and women—are encouraged to apply.

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