Insights

New client wins Brennan IT is actively expanding its client base with recent engagements such as TasPorts Group, signaling opportunities to upsell digital transformation, security modernization, and managed services across port and logistics sectors.

Cyber security growth The acquisition of CBRCYBER and ongoing partnership with Securonix indicate a strengthened cyber security and unified defense capability, creating sales opportunities for managed security services, SIEM deployments, and threat monitoring across ANZ.

One-provider platform Managed infrastructure, systems integration, and cyber security offered under a single provider model position Brennan IT to win larger, multi-domain engagements with mid-market to enterprise clients seeking end-to-end IT readiness.

Public sector traction Active involvement in government and Queensland Rural Water projects demonstrates credibility with public sector clients and potential for expanded digital modernization, compliance, and secure hosting or cloud services.

Finance and backing Major financial backing by Macquarie Capital signals growth runway and potential for larger deals, accelerated M&A integration, and investment in advanced technology capabilities to support scale and competitive bids.

Similar companies to Brennan

Brennan Tech Stack

Brennan uses 8 technology products and services including Mailchimp, Nagios, Swiper, and more. Explore Brennan's tech stack below.

  • Mailchimp
    Email
  • Nagios
    IT Infrastructure & Operations Management
  • Swiper
    Javascript Libraries
  • Cisco
    Network Hardware
  • Microsoft Windows
    Operating Systems
  • macOS
    Operating Systems & Computing Languages
  • Symantec
    System Security Services
  • CivicTheme
    UI Frameworks

Media & News

Brennan's Email Address Formats

Brennan uses at least 1 format(s):
Brennan Email FormatsExamplePercentage
First.Last@brennanit.com.auJohn.Doe@brennanit.com.au
94%
FirstL@brennanit.com.auJohnD@brennanit.com.au
6%

Frequently Asked Questions

What is Brennan's phone number?

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You can contact Brennan's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Brennan's official website and social media links?

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Brennan's official website is brennanit.com.au and has social profiles on LinkedIn.

What is Brennan's NAICS code?

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Brennan's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Brennan have currently?

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As of July 2026, Brennan has approximately 1.1K employees across 6 continents, including OceaniaAsiaNorth America. Key team members include Chief Executive Officer: A. B.Ceo: B. V. D. L.Cfo: S. B.. Explore Brennan's employee directory with LeadIQ.

What industry does Brennan belong to?

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Brennan operates in the IT Services and IT Consulting industry.

What technology does Brennan use?

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Brennan's tech stack includes MailchimpNagiosSwiperCiscoMicrosoft WindowsmacOSSymantecCivicTheme.

What is Brennan's email format?

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Brennan's email format typically follows the pattern of First.Last@brennanit.com.au. Find more Brennan email formats with LeadIQ.

When was Brennan founded?

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Brennan was founded in 1997.
Brennan logo

Brennan

IT Services and IT ConsultingNew South Wales, Australia1001-5000 Employees

Brennan is a large IT services and consulting firm based in Sydney, New South Wales. The company designs, procures, maintains, and delivers technology systems tailored to each client’s specific needs and end-user requirements, with the aim of producing real, practical value. Its operating approach, described as the True Performance System, is intended to improve the way technology is delivered by aligning outcomes with what customers and their users actually experience.

It serves organizations looking for integrated IT solutions across infrastructure, systems integration, and cybersecurity, offering a single-provider model to help align technology with business goals. In March 2026 Brennan IT expanded its capabilities by acquiring CBRCYBER Pty Ltd, a move that broadened its cybersecurity and managed-services footprint while continuing to operate from its Sydney base.

Section iconCompany Overview

Phone number
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
1997
Employees
1001-5000

Section iconFunding & Financials

  • $100M$250M

    Brennan's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Brennan's revenue is estimated to be in the range of $100M$250M

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