Executive Assistant Hybrid

Nuclea Energy Inc. is a Canadian advanced nuclear technology company developing next-generation microreactors designed to deliver reliable, carbon-free energy to remote communities, critical infrastructure, Arctic operations, and data centers.

We are a fast-growing company operating at the intersection of advanced technology, clean energy, and global infrastructure. We are building not only innovative energy solutions but also the team, processes, and foundation that will support our growth. This means working in an environment where ideas move quickly, priorities evolve, and individuals have the opportunity to make a meaningful impact.

We are looking for talented and adaptable people who are excited by the opportunity to help build something from the ground up and contribute to the future of energy.

This is not a traditional back-office Executive Assistant role. As Executive Assistant, you will work closely with multiple members of the Executive Leadership Team in a fast-growing startup environment where priorities move quickly, decisions matter, and no two days look the same.

You will play a critical role in helping executives stay organized, prepared, and focused on their highest priorities. You will serve as a central point of coordination across multiple leaders.

As Nuclea Energy continues to grow, this role will help bring structure and organization to a dynamic environment. Your ability to anticipate needs, manage competing priorities, and adapt quickly to changing circumstances will directly contribute to the efficiency and effectiveness of the Executive Leadership Team and the organization as a whole.

This position is based in our Mississauga, ON office.

• Own and maintain complex calendars for multiple members of the Executive Leadership Team, proactively coordinating schedules, resolving conflicts, and managing competing priorities across different time zones.
• Manage meeting logistics, including preparing agendas, sending invitations, booking meeting rooms or virtual links, and ensuring executives are informed and prepared.
• Monitor key deadlines, commitments, action items, and follow-ups across multiple executive portfolios to keep priorities visible and on track.
• Provide consistent and organized administrative support while maintaining clear processes, professional boundaries, and a high level of confidentiality.
• Coordinate domestic and international travel arrangements, including flights, accommodations, transportation, and travel itineraries.
• Use digital tools and systems to maintain organized records, streamline administrative processes, and support the Executive Leadership Team's efficient day-to-day operations.

• Previous experience providing administrative or executive support, including supporting senior leaders, directors, or executives.
• Post-secondary diploma or degree in a relevant field (or an equivalent combination of education and experience).
• Strong organizational and time-management skills.
• High level of discretion, professionalism, and confidentiality.
• Strong attention to detail, autonomy, and proactivity.
• Proficiency with Microsoft Office, Google Workspace, and other digital collaboration tools.

• Work closely with the CEO and Executive Leadership Team
• Join a company building next-generation nuclear energy technology
• Gain exposure to investors, strategic partners, and industry leaders
• Opportunity to grow and drive positive change alongside a high-impact technology company
• Flexible hybrid work environment that supports collaboration and work-life balance

Applicants must be legally eligible to work in Canada. This position is based in Mississauga, Ontario, and requires three days…