Executive Assistant

Open to Indonesian nationals based in Jakarta.

About the job

Be the trusted partner that keeps a diversified group running.

Quantum is seeking a highly organised and resourceful Executive Assistant to provide executive-level support to senior management across a diversified group spanning energy, mining, consulting, and digital sectors. This is a hands-on role for someone who can manage communication, coordination, and day-to-day operations across multiple business units.

You will serve as a trusted partner to executives, preparing high-quality materials, coordinating across the group, and ensuring priorities move forward smoothly. The right person is proactive, discreet, and comfortable working across several industries at once.

What you'll do

• Prepare executive reports, industry analyses, presentations, and briefing documents.
• Draft, review, and edit correspondence, proposals, and internal communications.
• Produce board and client materials, including high-quality presentations.
• Coordinate inter-company meetings and communication across business groups.
• Support project tracking, follow-ups, and progress reporting across sectors.
• Maintain filing systems and support budget tracking, expenses, and vendor coordination.
• Provide logistical support for corporate events, client meetings, and conferences.
• Handle confidential information with discretion and professionalism.

What we're looking for

• At least five years of experience as an Executive Assistant, preferably in a multinational or diversified group.
• A bachelor's degree in Business Administration, Management, Communications, or a related field is preferred.
• Excellent written and verbal communication skills in English (Mandarin is an advantage).
• Proficiency in Microsoft Office, Google Workspace, and digital collaboration tools.
• Knowledge of business operations across energy, mining, consulting, or digital sectors is an advantage.
• Ability to manage multiple priorities and work under pressure in a fast-paced environment.
• High level of discretion, integrity, and professionalism.
• Right to work in Indonesia. This is a local hire based in Jakarta.

Why join us

This is a rare opportunity to work at the centre of a growing, diversified group and gain exposure across energy, mining, consulting, and digital businesses. You will partner directly with senior leaders, build broad commercial insight, and take on increasing responsibility as the group expands.

Additional information

• Jakarta-based, full-time position.
• On-site role.
• Occasional travel within Indonesia and the region as required.