Human Resources Administrator

Job Type: Full-Time – Hybrid (3+ days/week in office)

Position Type:
Net New

Join the Future of Reliable Energy!

Are you ready to shape the future grid? Hydrostor, a leading energy storage, technology and infrastructure company dedicated to developing utility-scale, long-duration energy storage solutions, is seeking an HR Administrator to join our team in Toronto. We’re supporting the development of a more resilient electricity grid and invite you to be at the forefront of this work!

Why Hydrostor?
Our cutting-edge A-CAES technology is uniquely poised to revolutionize the energy landscape. Join us as we lead the way in shaping a reliable and secure energy future.

Your Mission
Reporting to the Chief People Officer, the HR Admin plays an important role in supporting a high-performing People & Culture team that is focused on creating exceptional employee experiences while enabling the organization's continued growth.

This role provides broad exposure across the HR function, with a strong focus on recruitment coordination, HR systems administration, employee onboarding, benefits administration, payroll coordination, and employee engagement initiatives. As a trusted member of the team, you'll help ensure our people processes are efficient, compliant, and scalable while contributing to a positive, values-driven culture.

If you're an organized, proactive HR professional who enjoys balancing administrative excellence with meaningful employee interaction, we'd love to hear from you.

Your Day-to-Day Adventures
Talent Acquisition & Recruitment

Coordinate full-cycle recruitment activities for a variety of roles across the organization.

Support the creation and posting of job descriptions across multiple recruitment channels.

Review applications, conduct initial candidate screenings, and proactively source talent through platforms such as Linked In.

Lead all intern and co-op recruitment activities, including building relationships with educational institutions, coordinating interviews, and supporting student onboarding.

HR Administration & Systems

Maintain employee records and ensure accurate employee data within our Human Capital Management System (currently HiBob).

Process employee lifecycle changes, including new hires, promotions, transfers, and departures.

Support benefits administration, including enrollments, changes, and employee inquiries.

Maintain organized and compliant employee files and HR documentation.

Payroll & Compliance

Partner with third-party payroll providers to ensure timely and accurate employee updates.

Coordinate and prepare bi-weekly payroll submissions and related documentation.

Serve as a key contact for annual financial audit activities and HR-related reporting requirements.

Employee Experience & Culture

Coordinate onboarding and orientation activities that help new employees feel welcomed, informed, and set up for success.

Assist with employee recognition programs that celebrate accomplishments and reinforce our values.

Partner with HR and Marketing teams to support engagement initiatives, social events, and team-building activities.

Contribute to People & Culture projects and strategic initiatives throughout the year.

Who You Are
We're looking for someone who is detail-oriented, collaborative, and passionate about creating positive employee experiences. You enjoy working across a variety of tasks, thrive in a fast-paced environment, and bring a customer-service mindset to everything you do.

You are equally comfortable managing administrative details, supporting recruitment efforts, and building strong relationships with employees and stakeholders across the business.

What You Bring

Approximately 1-3 years of experience in Human Resources, Talent Acquisition, or a related People & Culture role.

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