Office Administrator & HR Specialist

Based in Tokyo, this role combines office administration with human resources support for a global function. It works with global colleagues, leaders, and the broader HR team to align activities and goals with the organization’s business strategies.

Office administration includes maintaining the office environment, ordering and replenishing supplies and inventory, supporting the logistics and operation of internal events, managing vendors and service maintenance, and handling administrative expenses, invoices, and contracts. Other assigned administrative and operational duties are also included.

The HR responsibilities cover coordination with external payroll vendors for monthly payroll, social insurance, resident tax, year-end tax adjustment, and other statutory HR processes. The role owns day-to-day HR operations such as onboarding, offboarding, employee information changes, leave of absence, benefits administration, employment documentation, and responses to employee HR inquiries.

It manages time and attendance and other HR systems, checks employee-data accuracy, and coordinates necessary updates with payroll and regional HR teams. It also works closely with the Japan HRBP to maintain HR procedures and related documentation and to improve HR processes.

Applicants need 2–3+ years of relevant experience in administration or human resources. Fluent Japanese and English are required, while Mandarin is an advantage rather than a stated requirement. The posting specifically asks for proficiency with Google Workspace collaboration tools, including Docs, Sheets, and Calendar, and experience using AI tools such as Gemini and Claude.

The position is Japan-based and requires advanced business-level Japanese. The employer is described as a SaaS company that uses AI for business decision-making, and the role sits within its Human Resources function.