Dean Holness
Principal Architect @TDECU
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WORK HISTORY
Principal Architect @TDECU
TX, US
I played a pivotal role in transforming TDECU\'s technology architecture, leading to enhanced stability, security and operational efficiency. • Lead the technology architecture function, overseeing cloud, security, infrastructure, and network architecture across the enterprise.• Architected and executed multi-year transformation roadmaps in support of digital modernization, operational resilience, and member experience.• Implemented enterprise-wide Zero Trust and microsegmentation strategy using Microsoft Defender XDR, Palo Alto\'s Prisma SD-WAN / Prisma, and other industry leading platforms.• Led security remediation and strategic redesign, driving enhanced firewall, PAM, Data Loss Prevention and identity controls.• Gave strategic guidance on mergers and acquisitions, completing risk assessments, tech stack analysis, and infrastructure alignment.• Built and mentored a high-performance architecture team, establishing a federated architecture governance model and delivering scalable design patterns for cloud-native applications.• Spearheaded the development of observability and AI-powered dashboards for endpoint health, IAM hygiene, and employee efficiency using custom analytics and Power BI.• Played a strategic role in the “Core Modernization” initiative—designing cloud-native core banking using BIAN OpenAPI architecture principles.• Developed AI-powered dashboards for improved endpoint health and employee efficiency, utilizing Power BI.
EDUCATION
The University of the West Indies
Bachelor of Science (BSc), Computer Science
SKILLS
ABOUT DEAN HOLNESS
With 20+ years of experience leading enterprise IT strategy, I specialize in cybersecurity architecture, cloud transformation, and infrastructure modernization. At TDECU, a $10B credit union, I lead cross-functional architecture teams to design secure, scalable systems aligned with business growth, compliance, and digital innovation.I’m passionate about enabling secure transformation—delivering solutions that protect critical assets while improving operational resilience and member experience. From Zero Trust frameworks to SD-WAN and Microsoft Defender XDR, I’ve deployed modern security stacks and driven cloud-native strategies across regulated environments.My leadership style blends strategic foresight with hands-on execution. I’ve led cybersecurity improvements post-breach, designed cloud adoption roadmaps, and built AI-powered automation tools to reduce operational load and enhance visibility across endpoints, IAM, and voice systems.Holding certifications including CISSP and TOGAF, I work closely with business and technology leaders to align architecture decisions with organizational goals. My focus is on delivering secure, scalable, and future-ready ecosystems that enable transformation, resilience, and sustainable growth.
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