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David Messner Email & Phone Number

Experienced Telecommunications & IT Operations Manager at Georges River Grammar
Location: Sydney, New South Wales, Australia 12 work roles 3 schools
1 work email found @telstra.com LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

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Work email d****@telstra.com
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Current company
Georges River Grammar
Role
Experienced Telecommunications & IT Operations Manager
Location
Sydney, New South Wales, Australia
Company size
54 employees

Who is David Messner? Overview

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Quick answer

David Messner is listed as Experienced Telecommunications & IT Operations Manager at Georges River Grammar, a company with 54 employees, based in Sydney, New South Wales, Australia. AeroLeads shows a work email signal at telstra.com and a matched LinkedIn profile for David Messner.

David Messner previously worked as IT Systems Administrator at Georges River Grammar and Maintenance Officer at Georges River Grammar. David Messner holds Associate Diploma, Electrical, Electronics And Communications Engineering, A Grade Pass from Tafe Nsw Higher Education.

Company email context

Email format at Georges River Grammar

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{first}.{last}@telstra.com
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AeroLeads found 1 current-domain work email signal for David Messner. Compare company email patterns before reaching out.

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Profile bio

About David Messner

I have over 26 years of Operations experience in Telecommunications and Information Technology including 15 years in a technical capacity and 10 plus years in leadership / management roles.I have had broad exposure of IT technology ranging from desktop to network, storage and application support.My extensive technical experience combined with my ability to lead, develop and inspire productive people gives me the skills I need to be an effective IT Operations Manager.Key Skills:• Coaching, motivating and developing people through strong leadership.• Intrinsic sense for service management and customer first.• Recognising and promoting opportunities for operational improvements and innovation.• Broad end to end technical comprehension of IP networks, server hardware and OS, storage, application and database. • Managing and driving timely resolution of high impacting incidents.• Logical problem solving mindset.• Effective written and oral communication skills at all levels including senior management.• Excellent appreciation of Information Technology Infrastructure Library (ITIL) concepts.

Listed skills include Itil, Telecommunications, Change Management, Data Center, and 25 others.

Current workplace

David Messner's current company

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Georges River Grammar
Georges River Grammar
Experienced Telecommunications & IT Operations Manager
new south wales, australia
Website
grg.nsw.edu.au
Employees
54
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Company profile
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12 roles · 37 years

David Messner work experience

A career timeline built from the work history available for this profile.

It Systems Administrator

Current
Georges River Grammar

Sydney, New South Wales, Australia

Providing IT and Communications support for staff and students of the school.

Jan 2023 - Present

Skilled Labourer

Endeavour Skilled Trades

Sydney, Australia

May 2017 - Dec 2020

Network Manager - Content & Messaging Systems

Telstra

Sydney

  • Key Responsibilities:
  • Effective people management of 9 local and 2 remote staff.
  • Ensure the high availability of media and messaging applications & platforms.
  • Implement an effective problem management strategy.
  • Provide escalated Incident Management. Drive timely resolution on incident bridges.
  • Establish and govern a robust Change/Release Management regime.
Mar 2012 - Nov 2016

Network Manager - Data Centre Networks

Telstra

Sydney, Australia

  • Key Responsibilities:
  • Lead, develop and inspire a team of 10 technical staff.
  • Ensure the high availability of Telstra’s internal and customer IP hosting and cloud networks across five main data centres nationally.
  • Implement and oversee an effective problem management strategy, aiming to prevent impacting incidents and eliminate recurring incidents.
  • Establish close relationships with network vendors, namely Cisco and F5, hosting monthly vendor performance meetings and drive root cause resolution of high severity incidents.
  • Escalated Incident Management, including stakeholder management.
May 2004 - Mar 2012

Technical Expert – Storage Applications

Telstra

Sydney, Australia

  • Key Responsibilities:
  • Mentor a team of 6 technical contractor staff, technically and leadership.
  • Provide Level 3 operational support for Cisco / EMC2 Symmetrix storage network at expert level.
  • Implement operational best practices within a newly formed team.
2002 - 2004 ~2 yrs

Technical Expert – Network Infrastructure (Repair)

Telstra

Sydney, Australia

Provide proactive maintenance and resolve incidents for Telstra’s corporate LAN/WAN and internet hosting environments

2001 - 2002 ~1 yr

Network Specialist – Network Infrastructure (Build)

Telstra

Sydney, Australia

Build and deploy network infrastructure for Telstra’s corporate LAN/WAN environments.Part of a team that built and supported Telstra’s communication networks during the 2000 Sydney Olympic Games.

1998 - 2001 ~3 yrs

Lan Administrator – It Customer Service Delivery

Telstra

Sydney, Australia

Level 3 LAN and Desktop and SOE Application support. Netware 4.11 / Windows NT

1996 - 1998 ~2 yrs

Lan Administrator – Network Operations

Telstra

Sydney, Australia

Level 2 LAN and desktop support specialising in Novell Netware 3.2 / MS Windows

1994 - 1996 ~2 yrs

Lan/Wan Co-Ordinator – Newtown Exchange Maintenance Group

Telecom

Sydney, Australia

Provided LAN & WAN and system support for 8 sites within Sydney’s southern region.

1992 - 1994 ~2 yrs

Senior Telecommunications Technical Officer – Axe Maintenance Group

Telecom

Sydney, Australia

Provide maintenance and support for Ericsson AXE digital telephone exchanges located at Newtown Exchange, involving regular after hours loading and testing of software packages.

1989 - 1992 ~3 yrs
Team & coworkers

Colleagues at Georges River Grammar

Other employees you can reach at grg.nsw.edu.au. View company contacts for 54 employees →

EG Elise Gaskell Elise Gaskell Colleague at Georges River GrammarGreater Sydney Area, Australia View → PJ Peter Joseph Peter Joseph Colleague at Georges River GrammarGreater Sydney Area, Australia View → AW Alisha Wood Alisha Wood Colleague at Georges River GrammarKirrawee, New South Wales, Australia, Australia View → MH Michelle Hutchinson Michelle Hutchinson Colleague at Georges River GrammarGreater Sydney Area, Australia View → PL Panayioti Lukas Panayioti Lukas Colleague at Georges River GrammarGreater Sydney Area, Australia View → SJ Stephen Jabaji Stephen Jabaji Colleague at Georges River GrammarSydney, New South Wales, Australia, Australia View → KA Keishi Abe Keishi Abe Colleague at Georges River GrammarGeorges Hall, New South Wales, Australia, Australia View → KM Kristie Marks Kristie Marks Colleague at Georges River GrammarSydney, New South Wales, Australia, Australia View → NJ Nadine Jones Nadine Jones Colleague at Georges River GrammarGreater Sydney Area, Australia View → KG Karen Gaskell Karen Gaskell Colleague at Georges River GrammarAustralia, Australia View →
3 education records

David Messner education

Education record

Leeton High School
FAQ

Frequently asked questions about David Messner

Quick answers generated from the profile data available on this page.

What company does David Messner work for?

David Messner works for Georges River Grammar.

What is David Messner's role at Georges River Grammar?

David Messner is listed as Experienced Telecommunications & IT Operations Manager at Georges River Grammar.

What is David Messner's email address?

AeroLeads has found 1 work email signal at @telstra.com for David Messner at Georges River Grammar.

Where is David Messner based?

David Messner is based in Sydney, New South Wales, Australia while working with Georges River Grammar.

What companies has David Messner worked for?

David Messner has worked for Georges River Grammar, Endeavour Skilled Trades, Telstra, and Telecom.

Who are David Messner's colleagues at Georges River Grammar?

David Messner's colleagues at Georges River Grammar include Elise Gaskell, Peter Joseph, Alisha Wood, Michelle Hutchinson, and Panayioti Lukas.

How can I contact David Messner?

You can use AeroLeads to view verified contact signals for David Messner at Georges River Grammar, including work email, phone, and LinkedIn data when available.

What schools did David Messner attend?

David Messner holds Associate Diploma, Electrical, Electronics And Communications Engineering, A Grade Pass from Tafe Nsw Higher Education.

What skills is David Messner known for?

David Messner is listed with skills including Itil, Telecommunications, Change Management, Data Center, Ethernet, Network Design, Wireless Networking, and F5 Bigip.

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