Senior Mechanical Design Engineer (f/m/d)

About Us NPX partners with nuclear utilities and new reactor projects to deliver innovative design engineering solutions that unlock performance. We combine decades of nuclear operation expertise with AI, digital tools, and lean processes, to help plants run safer, smarter, and more cost-effectively. Our Design Engineer team scales this expertise through advanced electrical, mechanical, and instrumentation & control (I&C) design practices to clients across Canada.

The Senior Mechanical Design Engineer is responsible for delivering high-quality mechanical design solutions for nuclear facilities. In this role, you will lead complex design scopes, provide technical direction and oversight, and serve as a trusted engineering partner to clients.

You will apply mechanical design engineering expertise to guide projects from concept through detailed design, while mentoring junior engineers, driving continuous improvement in design processes, and championing innovation in how nuclear design engineering work is executed.

Travel Requirements: Occasional travel to the client site in Bruce County, as required by project needs.

Provide technical leadership and engineering judgment, including defining design approaches, resolving complex technical issues, and ensuring alignment with safety, regulatory, and project requirements.

Prepare, review, and approve mechanical engineering deliverables in accordance with applicable procedures, codes, standards, and regulatory requirements.

Act as a technical interface with clients, vendors, regulators, and internal stakeholders, supporting design reviews, technical meetings, and issue resolution.

Collaborate across disciplines to define and achieve the required functionality, performance, reliability, availability, and maintainability of systems and components.

Support and mentor junior engineers by providing guidance, design oversight, and constructive technical feedback.

Work closely with QA and project teams to address design issues, support audits and reviews, and ensure overall design quality.

Contribute to the evolution of NPX’s design tools, standards, and processes, identifying opportunities to improve efficiency, consistency, and technical excellence.

Leadership & Influence: you elevate team performance and create influence without being asked.

At NPX, we design our environment around the whole person , not just the job they do.

• Body: Health coverage, a spending account, and the freedom to rest and recharge.
• That means competitive pay and recognition for the impact you make.

NPX provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression. Just a heads up that we use AI to help in the filtering of candidates based on job-specific criteria.