Executive technology leadership

Transforming Visions into Reality

Enterprise technology leadership for growth, modernisation, security, and delivery.

I help boards, CIOs, CTOs, and business sponsors turn ambition into secure, fundable and deliverable enterprise technology outcomes across applications, data, AI, cloud, cybersecurity, legacy renewal, and complex transformation.

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Tarun Aggarwal professional executive portrait — **Tarun Aggarwal** Technology Executive | CIO / CTO Advisory, Enterprise Modernisation and Delivery Governance
**MBA, Information Technology · B.Eng, Computer Science** **17+ years** **$250M+ pursuits** **$150M+ delivery**

Enterprise applications Legacy and mainframe modernisation Cybersecurity and risk AI, data and cloud Architecture governance Transformation delivery

17+ years advising, shaping and governing enterprise technology outcomes

$250M+ strategic pursuits, executive propositions and commercial narratives

$150M+ regulated delivery portfolios and transformation programmes

Gov Cleared for sensitive government and regulated-sector technology roles

Enterprise credibility

Selected organisations and sectors where executive technology leadership, delivery discipline and commercial judgement have mattered.

Executive profile

Executive breadth across the full CIO and CTO agenda.

My leadership experience spans the commercial front end and the execution core of enterprise technology: shaping major pursuits, advising C-suite stakeholders, governing architecture, leading delivery portfolios, and building organisations that perform under pressure.

I have held senior leadership roles across Cognizant, Tech Mahindra, DXC Technology, IBM, Equifax, and NetComm, with work across government, banking and financial services, telecommunications, energy, identity, enterprise applications, data, cybersecurity, cloud, legacy modernisation, software, and managed services.

This creates a practical executive lens: strategy must be commercially credible, architecture must be secure and governable, and transformation must hold up under real constraints around risk, procurement, adoption, cost, resilience, and executive confidence.

Executive proposition

Enterprise technology judgement from boardroom ambition to operational reality.

What stakeholders get Fundable business cases Secure architecture direction Governed delivery confidence

Executive centre

From vision to enterprise outcomes

A leadership narrative that connects commercial strategy, technology direction, partner alignment, risk control and accountable delivery.

Applications

Enterprise applications and integration

Modernising business platforms, workflows, APIs, data flows and operating models so technology change lands inside the enterprise.

Security

Cybersecurity, risk and resilience

Keeping transformation credible where security, privacy, resilience, procurement, compliance and stakeholder trust matter.

Modernisation

Legacy, AI, data and cloud modernisation

Shaping pragmatic pathways across legacy estates, mainframe integration, application rationalisation, data platforms, AI adoption and service continuity.

Execution

Commercial and delivery governance

Connecting $250M+ pursuit leadership with $150M+ governed portfolios, multi-vendor execution, recovery planning and measurable outcomes.

Advisory focus

Executive advisory for leaders who need momentum without losing control.

Transformation and delivery assurance

Independent review, governance design, recovery planning, and executive steering for strategic technology programmes where delivery confidence matters.

Large-deal and commercial strategy

Win themes, solution strategy, commercial models, proposal architecture, and executive messaging for complex pursuits and account growth.

Applications, AI, security and modernisation advisory

Board-ready roadmaps that connect applications, data, cloud, AI, cybersecurity, legacy renewal, operating model, adoption, and measurable business value.

Executive technology counsel

Independent counsel for CIOs, CTOs, business sponsors, and vendor leadership navigating high-consequence technology decisions.

Enterprise impact

Leadership across technology providers, regulated sectors, and global-scale transformation.

17+ years across enterprise growth, delivery governance, architecture, and CTO leadership

Global leadership across global technology providers, multinational teams, and regulated-sector environments

$250M+ strategic pursuits shaped across executive, commercial, solution and delivery stakeholders

Government ready Cleared for sensitive government and regulated-sector transformation roles.

2025 to Current

Cognizant · Enterprise Director, Technology Delivery, Account Transformation and Client Advisory

Leading strategic-account technology delivery and transformation advisory across complex enterprise environments, including large account delivery portfolios exceeding $150M and large technology pursuits exceeding $250M TCV.

End-to-end delivery governance across applications, cloud migration, AI integration, legacy modernisation, security controls, and process transformation.
C-suite advisory across CIO, CTO, CEO, board-level and procurement stakeholders.
Cross-functional pursuit leadership across solution architecture, commercial, legal, delivery, and account teams.

2023-2025

Tech Mahindra · Vice President, Cloud and Infrastructure ANZ

Owned a $60M+ technology portfolio across ANZ, balancing growth, delivery quality, partner governance, cyber and compliance discipline, and commercial accountability across banking, government, telco, and enterprise clients.

Designed and executed ANZ go-to-market strategy across infrastructure, cloud, managed services, workplace, security, and enterprise modernisation.
Built hyperscaler alliance motions with AWS, Microsoft, and Google to create pipeline and improve market positioning.
Drove Agile, DevSecOps, platform engineering, vendor governance, security and compliance discipline across delivery teams.

2019-2023

DXC Technology · Chief Technology Officer, Banking Portfolio

Served as CTO for the banking portfolio with DXC, owning technology vision, architecture governance, transformation strategy, and executive advisory across major banking and financial services environments.

Established and chaired architecture governance across enterprise applications, integration, data, security, infrastructure, standards, and platform selection.
Provided CTO sponsorship for strategic accounts, renewals, major pursuits, escalations, and transformation programmes.
Led client-facing thought leadership across application modernisation, AI, cloud, cybersecurity, analytics, and modern enterprise platforms.

Earlier

IBM, Equifax and NetComm · Architecture, Software, Presales and Enterprise Solution Leadership

Built deep technical and commercial foundations across enterprise applications, cloud, service management, data, analytics, identity, IoT, networking, solution architecture, and complex multi-tier delivery.

Led enterprise architecture strategy and reference architectures for IBM Australia.
Designed regulated-sector data, analytics, and identity solutions for major banking and financial services clients.
Led software product delivery and commercial strategy for IoT and networking solutions at NetComm.

Credentials

Boardroom technology credentials.

Architecture and delivery

TOGAF PMP PMI-ACP ITIL

Cloud platforms

AWS Solutions Architect Azure Solutions Design

AI and emerging technology

Google Cloud Generative AI Leader Microsoft AI Transformation Leader Microsoft Agentic AI Business Solutions Architect

Perspectives

Executive perspectives on AI, regulated transformation, and delivery confidence.

Articles, points of view, and whitepapers shaped by hands-on leadership across banking, telecommunications, government, enterprise applications, AI, cyber risk, cloud, legacy renewal, delivery governance, and enterprise modernisation.

AI and modernisation Regulated transformation Delivery confidence

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5 June 2026 · Point of view

For executive roles, advisory mandates, consulting engagements, and thought-leadership collaboration.

Email me@taggarwal.com LinkedIn profile