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About the Role

Lead the day-to-day people operations for Reaktor Japan, owning the everyday mechanics of local HR, staying close to the team, and supporting leaders in making people decisions. This role also serves as a key link between the Japan office and Reaktor's global People/HR teams, requiring significant internal English communication to align global practices with the Japanese legal and cultural context.

Responsibilities

• Run people operations for the Japan office
• Manage the employee lifecycle from pre-onboarding to offboarding, including onboarding logistics, leave and attendance, performance cycle administration, employee data, routine HR questions, and employee documentation
• Handle local labor and compliance work, ensuring alignment with local labor law, company policies, and employment rules
• Work with external partners on payroll, social insurance, annual health checks, expense-related processes, and other local HR administration
• Support new joiners from Japan and overseas, ensuring they understand work practices, tools, culture, and key contacts
• Connect global People practices with Japan, working with global colleagues on performance, compensation, organizational changes, and other people processes
• Make global guidance clear, compliant, and workable for the Japan office
• Advise local leadership on people matters, including team health, engagement, retention, organizational changes, performance topics, and employee relations
• Support recruiting from a People perspective, collaborating with Talent Acquisition and hiring teams on job descriptions, interview process clarity, candidate experience, or employer brand input
• Contribute to the office community by working with office administration and team members on office practices, events, benefits, and wellbeing

Requirements

• Around eight or more years of experience in HR Generalist, People Operations, HR Business Partner (HRBP), or a closely related role in Japan
• Practical knowledge of Japanese labor law, labor administration, rules of employment, attendance, social insurance, and payroll coordination
• Experience working with external partners such as payroll vendors, labor and social security attorneys, benefits partners, or other HR service providers
• Experience across the employee lifecycle, including onboarding, performance cycles, employee relations, and offboarding
• Judgment to handle confidential and sensitive employee matters with care
• Ability to turn ambiguous people issues into clear facts, options, stakeholders, and next steps
• Comfort working in a small, flat organization where you need to spot issues, set priorities, and move the work yourself
• Native or near-native Japanese communication skills, especially for employment, policy, and employee-facing topics
• Strong business English, able to discuss HR operations, performance, compensation, organizational changes, and employee matters with global colleagues
• Experience using HRIS, Google Workspace, Slack, or similar tools to keep people data and processes organized

Skills

• HR Generalist
• People Operations
• HR Business Partner (HRBP)
• Japanese labor law
• Labor administration
• Rules of employment
• Attendance
• Social insurance
• Payroll coordination
• Employee lifecycle management
• Onboarding
• Performance management
• Employee relations
• Offboarding
• HRIS
• Google Workspace
• Slack
• Business English
• Japanese communication

Location

• Tokyo, Ebisu

Work Type

• Hybrid
• Full time

Experience Level

• Senior

Salary/Compensations

• Compensation will be based on experience, skills, and role expectations. Details will be discussed during the interview process.

Benefits

• A 40-hour work week built around sustainable work-life balance
• Parental leave and family-related support
• Professional development support
• Mobile phone and connectivity support
• Annual paid leave
• Paid sick leave
• Team dinners, internal events, company trips, and community activities
• Mental health support

About the Company

• At Reaktor, freedom and responsibility come together.
• Our Tokyo office brings together designers, engineers, product people, and business people.
• We keep hierarchy light.
• The right people get in the room, read the situation, and decide how to move.
• This role sits close to that operating model.
• It keeps local HR grounded in practice while giving leaders and employees the context they need to work well.