Mark OBrien: Email & Phone Number

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National Environment Manager at Ventia|Greater Adelaide Area, Australia

Position:

National Environment Manager at Ventia

Location:

Greater Adelaide Area, Australia

View Mark OBrien's Email

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Last updated: 2026-05-16

Updated: 2026-05-16

Found email addresses for Mark OBrien:

Business emails:

m*****n@ventia.com

Personal emails:

o***@live.com,

m***@gmail.com,

m***@outlook.com,

o***@hotmail.com

Found phones for Mark OBrien:

+61-428-***-*15,

+61-424-***-*96,

+61-400-***-*73,

+61-434-***-*86

A different Mark OBrien?

Work Experience 17 years

National Environment Manager at Ventia

Mar 2025 - Current

Environment and Sustainability Advisor at Ventia

Aug 2024 - Mar 2025

Specialist ‑ Tenement and Quarry at Adbri Cement

Sep 2021 - Nov 2023

Cement and Lime Tenement and Resource Manager at Adbri Cement

Apr 2020 - Sep 2021

Raw Materials Manager SA at Adbri Cement

Sep 2018 - Apr 2020

Raw Materials coordinator at Adbri Cement

Aug 2009 - Sep 2018

Mark OBrien started working in 2009, then the employee has changed 1 company and 5 jobs. On average, Mark OBrien works for one company for 2 years 8 months.

Education

Bachelor of Science at Flinders University

Frequently Asked Questions

What is Mark OBrien's email address?

SignalHire found verified email addresses for Mark OBrien, both business and personal. Their business email is m*****n@ventia.com, and personal emails include o***@live.com, m***@gmail.com, and m***@outlook.com.

What is Mark OBrien's phone number?

SignalHire found multiple verified phone numbers for Mark OBrien: +61-428-***-*15, +61-424-***-*96, and +61-400-***-*73.

How do I contact Mark OBrien at Ventia?

You can reach Mark OBrien 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 Mark OBrien's professional background?

Mark OBrien has 17 years of professional experience. They have held roles including Environment and Sustainability Advisor, Specialist ‑ Tenement and Quarry, and Cement and Lime Tenement and Resource Manager at companies such as Ventia, Adbri Cement, and Adbri Cement. Their education includes Bachelor of Science from Flinders University.

Is Mark OBrien's contact information up to date?

Yes. Mark OBrien's SignalHire profile was last updated on 16 May 2026, reflecting their current position as National Environment Manager at Ventia in North Sydney, New South Wales, Australia.

Mark OBrien Namesakes

Name

Company

Position

Mark OBrien

Teradyne

Retired

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Mark OBrien

Ray White

Licenced Real Estate Agent

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Mark OBrien

Lockport Family YMCA

Wellness Trainer/Youth Sports Coach

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