Ajit Singh
Executive Director - Head of Network & Security Platforms @NAB
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WORK HISTORY
Executive Director - Head of Network & Security Platforms @NAB
Melbourne, AU
Executive Director with enterprise leadership accountability for NAB’s global network, security, cloud and platform engineering capabilities. Leads large-scale transformation of mission-critical infrastructure, modernising legacy estates into resilient hybrid-cloud, edge and zero-trust architectures that underpin digital banking at scale.Recognised for building and leading high-performing global engineering organisations and embedding AI-enabled automation, AIOps and advanced observability into core infrastructure and security platforms. Delivers material improvements in reliability, cyber resilience, threat detection, incident response and engineering productivity, while driving integrated platform strategies across security, cloud and network engineering as foundational enablers of business growth and customer trust.Partners closely with senior executives, cybersecurity, risk and regulatory stakeholders to translate business strategy and regulatory expectations into secure, automated and future-ready platforms. Plays a pivotal role in strengthening NAB’s technology foundation, enabling innovation, and sustaining customer trust across retail, business and institutional banking.
EDUCATION
JSSATE
Bachelor's degree, Information Technology
SKILLS
ABOUT AJIT SINGH
Senior technology leader with 22+ years of experience driving enterprise-scale cloud, network, security and platform transformation across Tier-1 financial services and hyperscale environments.Currently an Executive Director at National Australia Bank, with accountability for enterprise Network, Security, Cloud and Platform Engineering, including large-scale AI-enabled automation, cyber resilience and zero-trust architectures. A trusted advisor to executive leadership, translating regulatory expectations and business strategy into secure, resilient and future-ready platforms.Brings deep leadership experience shaped by senior roles at Amazon Web Services (AWS) and Cisco Systems, supporting some of the world’s most complex and security-sensitive environments. Proven in delivering hybrid-cloud transformation, modernising legacy infrastructure, and embedding AI, AIOps and observability to materially improve reliability, security posture and cost efficiency.Experienced owner of multi-million-dollar technology portfolios, leading global teams of 100+ engineers, and governing complex vendor and hyperscaler ecosystems. Known for building high-performing teams, driving FinOps and cost optimisation, and delivering measurable outcomes at enterprise scale.Leadership style grounded in integrity, clarity and execution — focused on people, platforms and performance.
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