Human Resources Administrator

ArcTern Ventures; Toronto; Hybrid; CAD 50,000 - 70,000; Full time

Benefits offered by this job

Discretionary Bonus

Paid Vacation Time

Medical, Dental and Vision Benefits

RRSP Program – with a match!

Employee Share Option Plan

Job summary

Hydrostor in Toronto is seeking an HR Administrator to join our People & Culture team. You will support recruitment coordination, HR systems, onboarding, benefits, payroll coordination and employee engagement to help create exceptional employee experiences.

Reporting to the Chief People Officer, the role offers a hybrid work arrangement, a focus on scalable people processes, and opportunities to contribute to a values-driven culture in a fast-growing energy storage company.

Qualifications

• 1–3 years of experience in Human Resources, Talent Acquisition, or a related People & Culture role.
• Experience with HRIS/HCMS platforms; HiBob experience is an asset.
• Post-secondary education in HR, Business Administration, or related field.
• Progress toward or completion of CHRP designation is an asset.

Responsibilities

• Coordinate full-cycle recruitment activities across the organization.
• Maintain HRIS data and process lifecycle changes including hires, promotions, transfers and departures.
• Assist benefits administration and payroll coordination.
• Support onboarding, employee engagement initiatives, and culture programs.

Skills

HiBob HRIS

MS Office

HR experience

Communication

Organization

Education

Post-secondary education in HR or Business Administration

CHRP designation (asset)

Job description

Title: Human Resources Administrator

Location: Toronto, ON

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 LinkedIn.
• 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.
• Post-secondary education in Human Resources, Business Administration, or a related field.
• Progress toward, or completion of, a Chartered Professional in Human Resources (CHRP) designation is considered an asset.
• Experience working with HRIS/HCMS platforms; experience with HiBob is an asset.
• Strong organizational skills with exceptional attention to detail and the ability to manage multiple priorities simultaneously.
• Excellent communication and interpersonal skills, with a high degree of professionalism and discretion.
• Proficiency with Microsoft Office and collaboration tools.
• A proactive, team-first approach and willingness to contribute wherever support is needed.

Compensation Details

• $50,000 - $70,000 base salary
• Discretionary Bonus
• Paid Vacation Time
• Medical, Dental and Vision Benefits
• RRSP Program – with a match!
• Employee Share Option Plan

For more information on Hydrostor and the exciting journey we’re on visit our website at www.hydrostor.ca

Equal Opportunity Employer

At Hydrostor, we know that fostering an inclusive workplace, which values diversity, inclusion, and belonging is paramount to our success.

To fulfill our mission, our goal is to attract people who come from all backgrounds and walks of life, who bring diverse perspectives with wide-ranging experiences, and who share in our common passion to drive innovation and change the global energy landscape.

Hydrostor proudly embraces the principles of equal opportunity and inclusion. We are committed to providing opportunities for all employees and candidates. We ensure that all qualified applicants are considered for employment without regard to race, creed, colour, religion, gender, gender identity, gender expression, age, sexual orientation, national origin, marital status, parental, pregnancy, citizenship status, veteran status, disability, or any other protected status protected by applicable law.

Hydrostor is committed to making our application and interview process accessible to everyone, and we encourage applications from people with disabilities. If you require reasonable accommodation at any stage, please contact us at [e-mail]. In your application, we welcome you to specify your preferred pronouns (e.g. she/her/hers, he/him/his, they/them/theirs, etc.).

Use of Artificial Intelligence

Hydrostor does not use Artificial Intelligence (AI) tools to screen, assess, or select candidates during the recruitment or interview process.