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Technology executive. Former Big 4 CTO/CIO & Board Member.

Two decades leading the technology, operations and people behind global organisations operating at scale, from national platforms serving millions to hundreds of blue-chip clients worldwide.

  • Australian Computer SocietyMACS (Snr) CP
  • ITIL
  • IAPPIP3P
  • CIO50
Contact Tim See the journey
Timothy Larcos, technology executive, smiling in a dark suit

Who is Timothy Larcos?

Timothy Larcos is a Sydney-based technology executive and Company Director. A former Big 4 Chief Technology Officer and Chief Information Officer, he has spent the last two decades across the Big 4, Australia’s largest consulting firm, and Australia’s largest not-for-profit health insurer, leading the technology behind services for millions of members and hundreds of blue-chip clients globally. He served as a Company Director of a Big 4 services entity and has been named in Australia’s CIO50.

Across successive appointments in the Big 4, Tim became the firm’s youngest CIO, youngest CTO and youngest services board member globally.

Name
Timothy Larcos
Based
Sydney, Australia · leading across Australia, Asia & Europe
Previously
Big 4 multi-billion-dollar professional services and consulting · Australia’s largest not-for-profit health insurer · global media and medical-technology leaders
Board
Company Director, Big 4 services entity · 3 years
Recognition
CIO50 Australia
Credentials
MACS (Snr) CP · ITIL · IP3P
Sectors
  1. Internet & technology services
  2. Financial services & payments
  3. Media & entertainment
  4. Medical technology & healthcare
  5. Health insurance
  6. Big 4 professional services

Millions of members. Thousands of people. Consequential decisions.

  • 2M+

    Members depending on the national platforms and services he has been accountable for.

  • 10,000

    People supported by the Big 4 operating environment he led technology for.

  • $100m+

    Career-wide savings through technology, sourcing and operating-model change.

  • 100s

    Technologists led across national and Asia Pacific teams.

  • 3

    Continents of technology leadership: Australia, Asia and Europe.

  • 20+ yrs

    Building, running and governing enterprise technology.

From hands-on engineer to Big 4 boardroom.

Each step added a wider view of consequence: technical depth, then national service, regional and global responsibility, the executive mandate and finally company-level accountability.

  1. 01 · Built in practice

    Technical foundations

    Deep, hands-on technical expertise: engineering, platforms, networks and the systems behind critical services. Building, fixing and supporting technology created the judgement to question a design, understand a failure and respect the effort behind delivery.

    + Technical depth and delivery credibility.

  2. 02 · Taking responsibility for service

    National leadership

    From solving problems to leading the national functions that keep a business running. Reliability, workforce capability, suppliers and operating ownership had to work together for the people and customers depending on them.

    + Service ownership, scale and operational discipline.

  3. 03 · Leading across difference

    Asia Pacific leadership

    Regional responsibility across cultures, languages and time zones, inside global media and medical-technology leaders. Effective leadership meant listening to local teams and finding a shared direction without treating every market as the same.

    + Cultural intelligence and a regional perspective.

  4. 04 · Connecting the wider enterprise

    Global enterprise

    Multi-billion-dollar international groups: shared platforms, cross-border information, global providers, acquisitions and valuable intellectual property, where a change in one business could affect services and risk everywhere else.

    + Enterprise perspective and cross-border judgement.

  5. 05 · Carrying the executive mandate

    CIO & CTO · Big 4

    Successive CIO, Director of Technology Operations and CTO appointments inside a Big 4 firm, leading national and APAC teams through cloud, digital platforms, workforce transformation and a global business separation. Recognised in Australia’s CIO50.

    + Executive accountability and commercial judgement.

  6. 06 · Company-level accountability

    Company Director · Big 4

    Three years as a Company Director of the Big 4 services entity supporting 10,000 people: governance, commercial commitments, technology and cyber risk, and workforce continuity through COVID.

    + Governance, stewardship and effective challenge.

On stage. On screen. On the record.

Keynotes, CIO forums, executive panels and broadcast, in Australia and abroad.

  • Hosting the national webcastPwC Australia · COVID-19
  • Tim Larcos at ADAPT: Executive interview
    Executive interviewADAPT
  • Tim Larcos at Lenovo: Executive CIO panel
    Executive CIO panelLenovo
  • Tim Larcos at ADAPT: Digital Edge CIO Forum
    Digital Edge CIO ForumADAPT
  • Tim Larcos at VMware · Intel · IDC: CIO Forum
    CIO ForumVMware · Intel · IDC
  • Tim Larcos at Hilton Sydney: CIO Conference keynote
    CIO Conference keynoteHilton Sydney
  • Tim Larcos at Nice, France: Document management keynote
    Document management keynoteNice, France

Pedigree for the hardest technology mandates.

Big scale, difficult transformation, cyber and AI risk, commercial pressure and the people who have to carry it all.

  • Scale

    Technology at national and global scale

    Platforms and services that millions of members, thousands of staff and hundreds of blue-chip clients rely on every day, where an outage is a board-level event.

  • Transformation

    Large, complex, high-stakes change

    Cloud and platform migrations, enterprise-wide workplace change, a world-first cloud data platform for professional services and a global business separation, delivered while the business kept running.

  • AI

    AI that the organisation can trust

    Workforce AI adoption, intelligent automation and AIOps, governed with clear accountability, data permissions, human oversight and supplier controls.

  • Cyber & resilience

    Security and resilience the board can stand behind

    Cyber controls, Zero Trust, privacy and service resilience in regulated environments, with evidence that withstands audit, regulator and board challenge.

  • Commercial

    $100m+ in savings, reinvested

    Provider strategy, sourcing and operating-model redesign that cut cost and complexity, freeing investment for the work that creates value.

  • People

    Leaders who carry the change

    Building and developing teams of hundreds across Australia and Asia Pacific, with digital academies and adoption programmes that bring thousands of people along.

Operating depth. Executive breadth.

  • Executive technology leadership

    • CIO & CTO mandates
    • Technology strategy & investment
    • Leadership team development

  • Board & governance

    • Company directorship
    • Technology & cyber risk oversight
    • Audit & risk committee support

  • AI strategy & governance

    • Workforce AI adoption
    • Human oversight & controls
    • Intelligent automation

  • Technology operations

    • ITIL & service management
    • SRE, AIOps & observability
    • National-scale reliability

  • Cloud & platforms

    • Hybrid cloud & migration
    • Digital platforms & APIs
    • Zero Trust & SD-WAN

  • Commercial & sourcing

    • Provider strategy & renegotiation
    • FinOps & cost transparency
    • Managed-service governance

  • Transactions & change

    • Technology due diligence
    • Separation & integration
    • Operating-model restructuring

  • People & culture

    • Cross-cultural APAC teams
    • Digital fitness & academies
    • Change that sticks

Seats this experience is built for

  • Chief Information Officer (CIO)
  • Chief Technology Officer (CTO)
  • Chief Digital Officer
  • Group / Executive GM Technology
  • Non-executive director (technology, cyber, AI)
  • Advisory board member

Sectors, building to the Big 4

  1. Internet & technology services
  2. Financial services & payments
  3. Media & entertainment
  4. Medical technology & healthcare
  5. Health insurance
  6. Big 4 professional services

Platforms. Providers. Possibility.

Enterprise platforms from a career in operations, and the contemporary AI landscape.

  • OpenAIAI research & platforms
  • AnthropicAI research & safety
  • TypeSafe AIDecision AI
  • PerplexityAI search
  • DeepSeekAI models & platforms
  • MistralEnterprise & open AI
  • Hugging FaceOpen AI ecosystem
  • MetaMeta
  • MicrosoftCloud and workplace
  • AWSCloud engineering
  • GooglePlatforms and alliances
  • ServiceNowEnterprise service management
  • WorkdayEnterprise implementations
  • SAPEnterprise applications & ERP
  • CiscoNetworks and observability
  • SplunkOperational intelligence
  • NexthinkDigital workplace
  • F5Application delivery
  • IBMEnterprise and media platforms
  • SigniantMedia transfer
  • BMCEnterprise operations
  • DocusignDigital workflows
  • Nexon Asia PacificEnterprise delivery
  • XeroDigital-platform ecosystem
  • MYOBDigital-platform ecosystem
  • Spotlight ReportingDigital-platform ecosystem
  • EntoDigital-platform ecosystem
  • ezyCollectDigital-platform ecosystem
  • NowInfinityDigital-platform ecosystem
  • IODMHistorical platform ecosystem
  • CrunchBoardsHistorical platform ecosystem
  • ChatGPTChatGPT
  • ClaudeClaude
  • JevJev
  • Google GeminiGoogle Gemini
  • Perplexity SearchPerplexity Search
  • DeepSeek ChatDeepSeek Chat
  • Mistral VibeMistral Vibe
  • Meta LlamaMeta Llama
  • Microsoft AzureMicrosoft Azure
  • Microsoft CopilotMicrosoft Copilot
  • Google for WorkGoogle for Work
  • ServiceNow Now AssistServiceNow Now Assist
  • AppDynamicsAppDynamics
  • ThousandEyesThousandEyes
  • BIG-IPBIG-IP
  • IBM AsperaIBM Aspera
  • Lotus NotesLotus Notes
  • BMC RemedyBMC Remedy
  • AIOpsAIOps
  • FinOpsFinOps
  • DevOpsDevOps
  • DevSecOpsDevSecOps
  • SRESRE
  • ITILITIL
  • Zero TrustZero Trust
  • SD-WANSD-WAN
  • Hybrid cloudHybrid cloud
  • Public APIsPublic APIs
  • CMDBCMDB
  • SaaSSaaS

Logos identify platforms and practices across a career and the current market. They do not imply endorsement or a current partnership.

“It’s our duty to ensure transformation from old to new.”

Tim Larcos · CIO

“It’s really about bringing the whole organisation on board.”

Tim Larcos · ADAPT

“Without innovation, we don’t move forward, we don’t progress and we don’t improve.”

Tim Larcos · CIO

Reported, recognised, quoted.

Bring this experience to your next decision.

For CIO, CTO and board conversations, contact Tim directly and in confidence. For advisory and client work, start with Larcos Consulting.

Email Tim Engage via Larcos Consulting

About Tim Larcos

Who is Timothy Larcos?

Timothy Larcos is a Sydney-based technology executive and Company Director. A former Big 4 Chief Technology Officer and Chief Information Officer, he has spent the last two decades across the Big 4, Australia’s largest consulting firm, and Australia’s largest not-for-profit health insurer, leading the technology behind services for millions of members and hundreds of blue-chip clients globally. He served as a Company Director of a Big 4 services entity and has been named in Australia’s CIO50.

What executive roles has Timothy Larcos held?

Within the Big 4, Tim held successive Chief Information Officer, Director of Technology Operations and Chief Technology Officer appointments, and served three years as a Company Director of the firm’s Australian services entity. He has also led technology services for Australia’s largest not-for-profit health insurer, and held regional and global technology leadership roles in media and medical-technology enterprises.

Is Timothy Larcos a CIO50 recipient?

Yes. Tim has been named in CIO Australia’s CIO50, recognising Australia’s leading technology executives.

What are Tim Larcos’s qualifications?

Tim is a Senior Member and Certified Professional of the Australian Computer Society (MACS (Snr) CP) and holds ITIL and IP3P certifications.

What is Tim Larcos known for?

Leading technology at scale through large, complex transformation: Big 4 CIO and CTO roles, national platforms serving millions of members, cloud and platform migrations, cyber resilience, AI adoption with accountability, board-level governance and more than $100 million in career-wide savings.

Which industries has Tim Larcos worked in?

Internet and technology services, financial services and payments, media and entertainment, medical technology and healthcare, health insurance and Big 4 professional services, with roles across Australia, Asia and Europe.

Where is Tim Larcos based?

Sydney, Australia. He has led teams across Australia and Asia Pacific and works with international organisations.

How can recruiters or boards contact Tim Larcos?

Contact Tim directly and in confidence at tim@larcos.consulting, on +61 410 470 192, or through LinkedIn at linkedin.com/in/timlarcos.