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I am an experienced Executive Assistant and Business Support professional with over 20 years working in the mining and heavy equipment industry across Indonesia and Singapore. I excel at executive administration, sales support, market research, and cross-cultural client liaison. Multilingual and highly organized, I thrive in fast-paced environments and am trusted to handle confidential matters with discretion while keeping senior leadership well informed and supported. In my roles, I have coordinated complex travel for executives, supported large-scale events, and conducted market intelligence to drive parts and services growth. I’m proud to have contributed to significant sales outcomes and to consistently maintain strong relationships with customers, including Chinese-speaking clients in mining sectors. I bring a proactive, collaborative approach and a track record of delivering operations efficiency and effective communication.…I am an experienced Executive Assistant and Business Support professional with over 20 years working in the mining and heavy equipment industry across Indonesia and Singapore. I excel at executive administration, sales support, market research, and cross-cultural client liaison. Multilingual and highly organized, I thrive in fast-paced environments and am trusted to handle confidential matters with discretion while keeping senior leadership well informed and supported. In my roles, I have coordinated complex travel for executives, supported large-scale events, and conducted market intelligence to drive parts and services growth. I’m proud to have contributed to significant sales outcomes and to consistently maintain strong relationships with customers, including Chinese-speaking clients in mining sectors. I bring a proactive, collaborative approach and a track record of delivering operations efficiency and effective communication.

Mariana Tjong

Project Manager, Content Creator, Marketing Strategist, +2

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I am an experienced Executive Assistant and Business Support professional with over 20 years working in the mining and heavy equipment industry across Indonesia and Singapore. I excel at executive administration, sales support, market research, and cross-cultural client liaison. Multilingual and highly organized, I thrive in fast-paced environments and am trusted to handle confidential matters with discretion while keeping senior leadership well informed and supported. In my roles, I have coordinated complex travel for executives, supported large-scale events, and conducted market intelligence to drive parts and services growth. I’m proud to have contributed to significant sales outcomes and to consistently maintain strong relationships with customers, including Chinese-speaking clients in mining sectors. I bring a proactive, collaborative approach and a track record of delivering operations efficiency and effective communication.…I am an experienced Executive Assistant and Business Support professional with over 20 years working in the mining and heavy equipment industry across Indonesia and Singapore. I excel at executive administration, sales support, market research, and cross-cultural client liaison. Multilingual and highly organized, I thrive in fast-paced environments and am trusted to handle confidential matters with discretion while keeping senior leadership well informed and supported. In my roles, I have coordinated complex travel for executives, supported large-scale events, and conducted market intelligence to drive parts and services growth. I’m proud to have contributed to significant sales outcomes and to consistently maintain strong relationships with customers, including Chinese-speaking clients in mining sectors. I bring a proactive, collaborative approach and a track record of delivering operations efficiency and effective communication.

Available to hire

I am an experienced Executive Assistant and Business Support professional with over 20 years working in the mining and heavy equipment industry across Indonesia and Singapore. I excel at executive administration, sales support, market research, and cross-cultural client liaison. Multilingual and highly organized, I thrive in fast-paced environments and am trusted to handle confidential matters with discretion while keeping senior leadership well informed and supported.

In my roles, I have coordinated complex travel for executives, supported large-scale events, and conducted market intelligence to drive parts and services growth. I’m proud to have contributed to significant sales outcomes and to consistently maintain strong relationships with customers, including Chinese-speaking clients in mining sectors. I bring a proactive, collaborative approach and a track record of delivering operations efficiency and effective communication.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Chinese

Advanced

Malay

Advanced

Work Experience

Executive Assistant / Product Support Marketing and Sales / Mandarin Customer Liaison at PT. Trakindo Utama – Head Office, Jakarta

January 1, 2024 - Present

Manage confidential matters and communications for the General Manager with discretion and professionalism. Coordinate complex travel arrangements, accommodation, visa and passport requirements. Support exhibitions, workshops, training, and factory visits to ensure smooth event execution. Conduct market intelligence reviews, analysing technical specifications and competitor data to support parts and services growth strategies. Manage customer liaison for Chinese-speaking clients in the nickel mining and smelter sectors, building relationships across East Indonesia. Handle customer feedback and issues promptly, collaborating internally to achieve timely resolutions.

Executive / Personal Assistant at PT. Trakindo Utama – Singapore Branch, Singapore

August 1, 2007 - December 31, 2023

Provided high-level administrative and personal support to Senior Consultant, managing schedules, correspondence, and confidential documents. Arranged extensive travel logistics, including accommodation and visa processing. Prepared meeting materials, reports, and presentations; recorded minutes and followed up on action points. Coordinated internal and external events such as exhibitions, workshops, and factory visits. Managed monthly sales forecast submissions, customer data updates in SAP CRM, and machine sales reports. Conducted market research and distributed mining news updates to management for strategic review. Assisted with budget preparation, procurement, and office operations including drivers and stationery requisitions.

Executive / Personal Assistant at PT. Trakindo Utama – Sumatera Area, Medan, Indonesia

January 1, 2003 - August 1, 2007

Organised events, meetings, and conferences for senior management. Handled travel arrangements, expense claims, and report consolidation for marketing and finance divisions. Coordinated purchasing activities and liaised with suppliers for office requirements. Supported General Manager in KPI tracking and presentation preparation.