Project Assistant (Japan)

COMPANY OVERVIEW

STACK Infrastructure builds, owns, and operates hyperscale and colocation data centers that power the world’s most ambitious technology companies. With a rapidly expanding footprint across APAC, STACK combines deep development expertise, flexible capital, and operational discipline to deliver critical digital infrastructure at scale.

Our clients include the largest hyperscale cloud platforms. We are building a regional platform defined by speed of delivery, power reliability, and long-term partnership — and we are assembling the team to lead that effort.

Summary/Objective

STACK is seeking a motivated and detail-oriented Project Assistant to join our Delivery team. This is an excellent opportunity for a recent college graduate or early-career professional interested in project management, construction, contracts administration, and data center development.

The Project Assistant will support Project Managers and Delivery Managers with day-to-day project coordination, documentation, reporting, and contract administration activities. The successful candidate will gain hands-on experience working on large-scale infrastructure projects in a fast-paced and collaborative environment.

Responsibilities

• Promote a consistent culture of safety across all STACK data centers.
• Support delivery teams with the coordination and administration of construction and infrastructure projects.
• Assist with preparing, organizing, and maintaining contracts, project documentation, correspondence, and reports.
• Help track project variations, approvals, claims, deliverables, and timelines to ensure projects remain organized and compliant.
• Update project trackers, assist with budget and cost reporting, and support invoice and financial tracking activities.
• Coordinate with internal teams, subcontractors, suppliers, and consultants to support smooth project execution and communication.
• Attend project meetings, prepare meeting minutes, and track follow-up actions.
• Assist with office and site administration activities, including document management and operational support tasks.
• Maintain accurate project records and ensure information is communicated effectively to stakeholders.
• Support the preparation of presentations, status updates, and project reports for management and project teams.
• Identify and escalate project issues, risks, or delays to Project Managers when appropriate.
• Build professional relationships with internal and external stakeholders while contributing to a collaborative team environment.
• Perform additional administrative and project support duties as assigned by the Delivery team.
• Perform other duties as assigned.

Competencies

• Strong organizational skills and attention to detail.
• Clear written and verbal communication skills.
• Positive and proactive attitude toward safety, teamwork, and customer service.
• Basic understanding of building standards and facility systems.
• Ability to work collaboratively with vendors, contractors, and internal teams.
• Reliable, punctual, and able to work independently once trained.
• Adaptable to changing priorities and business needs.
• Eager to participate in ongoing learning and development.
• Commitment to upholding STACK’s standards for safety, operational excellence.

Travel Required

· Travel between Data Center sites and the STACK Tokyo head office will be required for this role.

Required Education and Experience

· Bachelor’s degree in Construction Management, Engineering, Business, Project Management, Architecture, MEP Design, or a related field; or equivalent educational background.

· Recent graduates or candidates with up to 2 years of relevant experience are encouraged to apply.

· Internship or coursework related to construction, project coordination, or administration is advantageous.

· Intermediate English communication skills (written and verbal).

· Proficiency with Microsoft Office and standard business applications.

Preferred Education and Experience

· Familiarity with project coordination or document management tools is a plus.

· Experience working in collaborative team environments through internships, university projects, or extracurricular activities.

· Proficiency with project management software, such as Microsoft Project or equivalent platforms.

· Business-level English communication skills

Additional Eligibility Requirements

· Must be willing to work outside normal business hours, including weekends, late nights, holidays, and on-call support.

Equal Opportunity Employer

STACK provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.