Thomas OSullivan: Email & Phone Number

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A-Level Mathematics Teacher at Vinschool|Long Biên district, Hanoi, Viet Nam

Position:

A-Level Mathematics Teacher at Vinschool

Location:

Long Biên district, Hanoi, Viet Nam

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Last updated: 2026-06-11

Updated: 2026-06-11

Found email addresses for Thomas OSullivan:

Business emails:

t********n@citco.com

Personal emails:

t*************n@gmail.com

Found phone for Thomas OSullivan:

+84-***-***-0860

A different Thomas OSullivan?

Work Experience 21 years

A-Level Mathematics Teacher at Vinschool

Jan 2018 - Current

Vice Principal / Head of Cambridge Department at Vinschool

Jul 2024 - Jun 2025

Head of Mathematics & National Head of Subject at Vinschool

Jan 2021 - Jun 2022

Founder & Mathematics Tutor | MathMech+ One Education LLC at MathMech+

Oct 2023 - May 2025

National Exam Supervisor – Leaving Certificate at Department of Education, Ireland

May 2018 - Jun 2018

Cover Supervisor at Franciscan College Gormanston

Sep 2017 - Jun 2018

Secondary Mathematics Teacher at West Hatch High School Academy Trust

Oct 2013 - Jul 2017

Business Studies/Accountancy/French Teacher at STJSS

Sep 2012 - May 2013

Secondary Mathematics Teacher at Patai Udom Suksaa, Bangkok

Apr 2009 - May 2012

Fund Accountant at The Citco Group Limited

Aug 2006 - Jan 2009

Bonds Administration at Bank of Ireland

Sep 2005 - Aug 2006

Thomas OSullivan started working in 2005, then the employee has changed 8 companies and 9 jobs. On average, Thomas OSullivan works for one company for 2 years 2 months.

Thomas is proficient in English, French, and Thai. Their professional focus is Academic Leadership, Creator, and Curriculum Innovation across 3 core areas.

Thomas holds Safeguarding, Health & Safety, Fire Safety, Managing Parents’ Expectations, First Aid, A-Level Mathematics (Mechanics, Pure, Statistics), and ACCA, Stock Market Analysis, DFA1 in French Business certifications.

Education

NPQH at Best Practice Network

PDE (Professional Diploma in Education) at Trinity College, Dublin

BSc in Management at Technological University Dublin

DFA 1 (French Business Certificate) at Paris Chamber of Commerce

Certificate in Marketing at Dublin Institute of Technology

Frequently Asked Questions

What is Thomas OSullivan's email address?

SignalHire found verified email addresses for Thomas OSullivan, both business and personal. Their business email is t********n@citco.com, and personal emails include t*************n@gmail.com.

What is Thomas OSullivan's phone number?

SignalHire found a verified phone number for Thomas OSullivan: +84-***-***-0860.

How do I contact Thomas OSullivan at Vinschool?

You can reach Thomas OSullivan 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 Thomas OSullivan's professional background?

Thomas OSullivan has 21 years of professional experience. They have held roles including Vice Principal / Head of Cambridge Department, Head of Mathematics & National Head of Subject, and Founder & Mathematics Tutor | MathMech+ One Education LLC at companies such as Vinschool, Vinschool, and MathMech+. Their education includes NPQH from Best Practice Network, and PDE (Professional Diploma in Education) from Trinity College, Dublin.

Is Thomas OSullivan's contact information up to date?

Yes. Thomas OSullivan's SignalHire profile was last updated on 11 June 2026, reflecting their current position as A-Level Mathematics Teacher at Vinschool in Hanoi, Hanoi, Vietnam.

Thomas OSullivan Namesakes

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Thomas OSullivan

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Software Development Engineer | Resource Explorer (AREX) Team

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Thomas OSullivan

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Solution Engineer

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Thomas OSullivan

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Program Officer

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