•Assisted HR Manager in daily operations, including recruitment, onboarding, and employee relations, contributing to a significant increase in HR process efficiency.•Successfully prepared and managed 50+ welcome letters for new hires through DocuSign, ensuring timely and accurate documentation.•Posted 10+ volunteer and co-op opportunities on various recruitment platforms (Charity Village, Volunteer Toronto), attracting a diverse pool of candidates.•Coordinated orientation processes for new staff and volunteers, enhancing onboarding experience and reducing onboarding time by 15%.•Maintained and updated employee folders and HR records in Google Drive, ensuring 100% accuracy and compliance with organizational policies.•Scheduled and managed meetings and interviews for all managers, improving scheduling efficiency by 25%.•Implemented and monitored HR policies and practices, ensuring adherence to company standards and legal requirements.•Provided general administrative support to streamline office workflow, contributing to a more organized and productive work environment.