Jack Yu: Email & Phone Number

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Executive Coach | Clarity, Judgement & Leadership at Altitude at Celestar Synergy|Singapore

Position:

Executive Coach | Clarity, Judgement & Leadership at Altitude at Celestar Synergy

Location:

Singapore

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Last updated: 2026-07-01

Updated: 2026-07-01

Found email addresses for Jack Yu:

Business emails:

j**k@lithan.com,

j**k@CelestarSynergy.com

Personal emails:

j****u@gmx.com

Found phone for Jack Yu:

+65-***-***-1853

A different Jack Yu?

Work Experience 22 years

Executive Coach | Clarity, Judgement & Leadership at Altitude at Celestar Synergy

Jan 2026 - Current

Instructor at Vertical Institute

Sep 2025 - Current

Associate Trainer at BELLS Institute of Higher Learning

Mar 2025 - Current

Adjunct Faculty at Lithan

Jun 2025 - Oct 2025

Finance & Compliance Executive at Relationship Studio

Oct 2022 - Jun 2025

Consultant, Public Sector & Government Practice at Frost & Sullivan

Jun 2021 - Mar 2022

Assistant Manager, AI Programme Office at IMDA

May 2020 - Jun 2021

Entrepreneur at Various organisations

May 2008 - Dec 2019

Senior Market Analyst, Storage Team at IDC Asia/Pacific

Aug 2004 - Apr 2008

Jack Yu started working in 2004, then the employee has changed 8 companies and 8 jobs. On average, Jack Yu works for one company for 2 years 7 months.

Jack is proficient in Chinese (Simplified), English, and Vietnamese. Their professional focus is Administration, Admin support, and Adult Education across 3 core areas.

Jack holds Decision Making & Stakeholder Management and Purpose Driven High Performance Organisation: Leadership Communication with Presence, Passion and Purpose certifications.

Education

Bachelor’s Degree at National University of Singapore

WSQ Advanced Certificate in Learning and Performance 2.0 (WSQ ACLP 2.0) at Institute for Adult Learning (IAL)

GCE "A" Levels at Victoria Junior College

GCE "O" Levels at Victoria School (Singapore)

Frequently Asked Questions

What is Jack Yu's email address?

SignalHire found verified email addresses for Jack Yu, both business and personal. Their business email is j**k@lithan.com, and personal emails include j****u@gmx.com.

What is Jack Yu's phone number?

SignalHire found a verified phone number for Jack Yu: +65-***-***-1853.

How do I contact Jack Yu at Celestar Synergy?

You can reach Jack Yu through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Jack Yu's professional background?

Jack Yu has 22 years of professional experience. They have held roles including Instructor, Associate Trainer, and Adjunct Faculty at companies such as Vertical Institute, BELLS Institute of Higher Learning, and Lithan. Their education includes Bachelor’s Degree from National University of Singapore, and WSQ Advanced Certificate in Learning and Performance 2.0 (WSQ ACLP 2.0) from Institute for Adult Learning (IAL).

Is Jack Yu's contact information up to date?

Yes. Jack Yu's SignalHire profile was last updated on 1 July 2026, reflecting their current position as Executive Coach | Clarity, Judgement & Leadership at Altitude at Celestar Synergy.

Jack Yu Namesakes

Name

Company

Position

Jack Yu

Tianjin Dema Investment Supervision Co., Ltd.

Vice President & CEO

Get contacts

Jack Yu

CITIC-Prudential Life Insurance Company Ltd.

Director, Risk Management

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Jack Yu

CTBC Bank Corp. (USA)

Branch Manager

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