Gavin Stephens
Enterprise Architect @Tokio Marine HCC
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WORK HISTORY
Enterprise Architect @Tokio Marine HCC
A broad Enterprise Architecture role spanning enterprise strategy, target state architecture, governance, and cross‑functional change across Tokio Marine HCC. Joined during the formation of a new Enterprise Architecture capability and played a key role in establishing the foundations, domains, tooling and ways of working for the EA function-Instrumental in establishing the Technology and Application Architecture domains as part of the formation of a new Enterprise Architecture team, helping define scope, responsibilities and engagement models-Helped establish the Enterprise Architecture engagement model with business and IT domains, clarifying how and when Architecture supports strategy, initiatives and decision‑making-Played a leading role in defining, evangelising and embedding LeanIX as the organisation’s Enterprise Architecture repository, including shaping its usage model, supporting adoption across IT and the business, improving enterprise‑wide visibility and embedding it into governance-Founding member of the Innovation Council, contributing to the initial definition of its operating model, terms of reference and engagement with Architecture, ensuring innovation activity is aligned to enterprise strategy, governance and scalable delivery-Led enterprise architecture strategy deliverables including enterprise and domain target states, principles, roadmaps and New Initiative Assessments across Finance, Actuarial (IBNR), Reinsurance and IT domains-Co‑authored and baselined the Enterprise AI Architecture Vision, providing a value‑first, safe and scalable framework for AI adoption; led AI demystification and literacy initiatives recognised beyond the immediate business unit with outputs feeding into and influencing wider group-level AI thinking and tooling-Authored and evolved the Hybrid Cloud Strategy, defining platform direction, workload placement principles, governance and operational guardrails
EDUCATION
Prestige College
Diploma, Computer Science
Hottentots Holland High School
Matric, English,Afrikaans,Science,Maths,Geography,Accounting,Computer Science
ABOUT GAVIN STEPHENS
I am a senior, cross‑domain Enterprise Architect with extensive experience shaping and executing enterprise‑wide strategy across complex, multi‑national organisations. My work focuses on connecting business strategy to operating models, capability roadmaps and architectural decisions that enable organisations to change with confidence, manage risk and invest deliberately to maximise value.I have progressed from deep technology and platform architecture into a broader enterprise role, operating as a trusted advisor to senior leaders across business and IT. I have played key roles in establishing and maturing Enterprise Architecture capabilities, defining target states and governance, and guiding large‑scale transformation across multiple domains including Finance, Actuarial, Cloud and on‑premise platforms, and emerging technologies such as Artificial Intelligence.While my background is strongly rooted in technology, my focus today is firmly on enterprise outcomes — ensuring Enterprise Architecture is used as a business decision‑making aid rather than a purely technical function. I am particularly effective at translating complexity into clear, pragmatic options for executive stakeholders and at building architecture practices that endure beyond individual initiatives.Core Capabilities & Skills#Enterprise Architecture Leadership – Enterprise and domain target states, business and capability modelling, target operating models, multi‑year roadmaps, architecture principles and governance#Strategic Advisory & Stakeholder Influence – Regular engagement with executive and senior leadership teams, framing complex issues as practical, decision‑ready options#Transformation & Change Enablement – Shaping enterprise‑wide change, aligning business strategy, architecture and delivery, supporting investment cases and prioritisation#Architecture Practice & Capability Building – Establishing EA domains, operating models, tooling and standards; mentoring architects and supporting capability uplift#Technology & Platform Strategy – Strong grounding in cloud and on‑premise platforms, enabling credible oversight of technology direction without being solution‑led#Commercial & Vendor Engagement – Strategic input into procurement, RFP/RFI processes, vendor assessment and platform selection#Leadership & Mentorship – Lead‑from‑the‑front approach focused on developing others and creating sustainable ownership modelsCertifications: TOGAF 9 Certified Architect | BCS Intermediate Certificate in Enterprise & Solution Architecture | ITIL v3 Foundation | PRINCE2 Foundation
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