Darren Shearsby
Sydney,New South Wales
Summary
Accomplished IT and Security Executive with 25 year record of leadership experience in areas such as infrastructure management, application support and Security Controls. Focused on satisfying customer needs through robust, innovative and forward-thinking solutions. Demonstrated success as operational leader, articulate communicator and practiced influencer. Collaborates across functions to outline and achieve project targets. Skilled in building solid business solutions based on methodologies and engineering principles. Complex problem-solver skilled in developing proposals, integrating technologies and managing projects.
Overview
26
26
years of professional experience
1
1
Certification
Work History
Enterprise Architect
Terra Firma
02.2024 - Current
- Advisory and consulting services specializing in Enterprise Architecture, Digital Strategy, and Cyber Security.
Head of Architecture & Security
CISO52
07.2023 - Current
- Clients: UGL, Essential Energy, Steadfast Technologies
- Implemented effective strategies through advisory services, leadership, and strategic planning resulting in enhanced performance of Critical Infrastructure organizations aligning to SOCI Act
- Cyber Leadership and planning aligning to AESCSF. TOGAF aligned Enterprise Architecture engagements
Head of Cyber (Interim) (Contract)
Essential Energy
07.2023 - 02.2024
- Took charge of overseeing the operational continuity along with project design authority for various essential aspects such as SIEM architecture implementation and management
- Directed requirements for the SOCI and AESCSF security frameworks developed by AEMO.
Head of Cyber Operations & Architecture
Transgrid
10.2021 - 07.2023
- Spearheaded the development of the Cyber practice, while providing guidance and support to team members.
- Managed Cyber Operations Service Line for IT-OT Systems on both Cloud and On-Premises.
- Achieved uplift in capability and maturity, following the guidelines of SOCI Act.
Principal Architect
Serco Australia
12.2020 - 10.2021
- Provided Enterprise Architecture and advisory services
- Led strategic planning and implementation for Serco / Facilities First merger.
- Technical director of IT-OT security overseeing Australia's Science Research ship.
Head of Architecture & Security (CISO-CTO)
Compass Australia
11.2014 - 11.2020
- Enhanced technology infrastructure by migrating numerous On-Premises platforms to AWS and Azure IAAS
- Defined, designed, and delivered standard security & IT controls including SOC, vulnerability management, asset management, CIS benchmarks, Incident management, DR, user awareness, patch management, mobile device management.
Enterprise Architect (Contract)
Tech-Mahindra
11.2013 - 10.2014
- Headed the transformation of Vodafone OSS/BSS tech stack to private cloud by leading architecture, design, and delivery teams.
Enterprise Architect
T-Systems UK
03.2011 - 10.2013
- Led technology architecture as the Enterprise Architect in the CTO Office.
Bid Lead
T-Systems UK
06.2010 - 02.2011
- Played a pivotal role in securing a lucrative 7-year outsource agreement valued at 1 Billion with the UK's leading Telecommunications company. Provided Pre-Sales leadership, offering expert guidance on cost modeling, commercial decision-making, and strategic planning to ensure successful transformation.
Solution Architect Manager
T-System UK
01.2010 - 07.2010
- Successfully handled demand management responsibilities encompassing pre-sales efforts, creation of business cases, and implementation of quality gates resulting in securing new business worth £10M per year.
Solution Architect
T-System UK
10.2009 - 01.2010
- Generated high-level designs and detailed cost analysis for pre-sales engagements in the energy industry
Solution Architect
Platform Smart
09.2008 - 09.2009
- AVIATION: Served as Incident Manager at London Airport, responsible for managing Scada and Oracle Applications stack.
Solution Architect
Data 3 – Australia
08.2006 - 08.2008
- Achieving $2M annual revenue growth by efficiently engaging in Pre-Sales, Design, and Delivery of Microsoft and VMware Solutions.
Solution Architect
Contractor
01.2003 - 06.2006
- Solution Architect CSR: Automated SOE
- Solution Architect Cleanaway: Microsoft Exchange
- Solution Architect IBM: (Westpac) Infrastructure & Security
- Solution Architect IBM (Victoria Police) Microsoft Exchange
- Solution Architect (UK Defense) Infrastructure & Security
- Solutions Architect IBM (Westpac, FlightCentre, Diageo)
Career Break
Australia
10.2002 - 01.2003
- Byron Bay, Fraser Island, Whitsunday, Noosa, Reef, Uluru, Ashes (!)
Senior Consultant
ICL- UK
02.1998 - 10.2002
- Managed projects for clients spanning across sectors like banking, HMCE operations, defense contracts, and national health.
- Advanced career from Graduate to Senior Consultant with specialized expertise in Microsoft Infrastructure, Messaging and security solutions
Graduate Engineer IT Support
BMRB UK
01.1998 - 10.1998
- Novell Server, Windows Desktop, MSDOS, Application Support, TCP/IP
Education
BEng Electronic & Electrical Engineering - Control Systems
Brunel University
London06-1997
Skills
- Leadership and Strategic Planning
- Executive Stakeholder Management
- Enterprise Architecture using TOGAF
- Chief Information Security Officer
- Chief Technology Officer
- Vendor Management and negotiation
- Risk Leadership
- Cloud Services and On-Prem
- Cyber Security Practice Development
- Communication
- Frameworks (AESCSF, CIS20, COBIT, NIST)
- Project Management (Agile and Waterfall)
- Transition & Transformation design and delivery
- Outsourcing development and delivery
- Business Case development
- Commercial Acumen
- Critical Infrastructure (SOCI Act)
- Data & Analytics
- IT Governance
- Security Architecture
- Agile development frameworks
- Technical leadership
- Infrastructure Planning
Strengths
- need to add
Achievements
- Creation of Cyber Operation Practices at Transgrid and Compass Group
- Design and Execution of Strategic plan to Merge Serco and Facilties First
Affiliations
- Seasoned Athlete: Swimming, Triathlons
- Volunteer: Surf Life Saving Australia, Scouts
Certification
- CISM, CGEIT, TOGAF, ITIL
References
References available upon request.
Timeline
Enterprise Architect
Terra Firma
02.2024 - Current
Head of Architecture & Security
CISO52
07.2023 - Current
Head of Cyber (Interim) (Contract)
Essential Energy
07.2023 - 02.2024
Head of Cyber Operations & Architecture
Transgrid
10.2021 - 07.2023
Principal Architect
Serco Australia
12.2020 - 10.2021
Head of Architecture & Security (CISO-CTO)
Compass Australia
11.2014 - 11.2020
Enterprise Architect (Contract)
Tech-Mahindra
11.2013 - 10.2014
Enterprise Architect
T-Systems UK
03.2011 - 10.2013
Bid Lead
T-Systems UK
06.2010 - 02.2011
Solution Architect Manager
T-System UK
01.2010 - 07.2010
Solution Architect
T-System UK
10.2009 - 01.2010
Solution Architect
Platform Smart
09.2008 - 09.2009
Solution Architect
Data 3 – Australia
08.2006 - 08.2008
Solution Architect
Contractor
01.2003 - 06.2006
Career Break
Australia
10.2002 - 01.2003
Senior Consultant
ICL- UK
02.1998 - 10.2002
Graduate Engineer IT Support
BMRB UK
01.1998 - 10.1998
BEng Electronic & Electrical Engineering - Control Systems
Brunel University
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