I deliver the things others say can never be done.
Fifteen years. Six global multinationals. Five turnaround and first-of-kind proof points. A combined £830m+ of incremental value. Currently leading Tesco's identity platform — serving tens of millions of customer accounts across five markets.
The through-line isn't a sector or a technology. It's a capability: taking the programmes that have stalled, the deadlines that can't move, the complexity that defeated others — and delivering them to a standard nobody thought achievable.
What I do
Identity & IAM at scale Authentication, access management, and fraud signals for tens of millions of customers. Billions of API calls monthly. The invisible infrastructure that makes digital commerce work.
M&A integration and separation Both sides of major corporate transactions — platform separation for the £700m Tesco Bank divestiture, and the first-ever Group identity integration at Tesco. Fixed horizons, complex legacy, zero incidents.
Platform transformation Multi-market platform rollouts, post-divestiture integrations, and turnaround programmes across retail, financial services, government, and telecoms.
AI-driven product strategy ML-based risk signals, personalisation at Group scale, behavioural data in real time. AI as infrastructure, not decoration.
Recent highlights
→ £700m Tesco Bank divestiture enabled — identity separation delivered on time, Christmas peak, zero incidents
→ Tesco's first-ever Group identity integration — 2 million customers migrated, 60% adoption in five months
→ Online fulfilment scaled 800k → 1.4m weekly orders — underpinning £2.3bn of incremental sales
→ UK Government Data Hub — turned around in four months, still live seven years on with 4M+ interactions
→ Annual Report citations across six organisations
Writing
Product at Scale — thought leadership on product, platform, and AI at enterprise scale. productatscale.substack.com
Speaking
Keynote Speaker — Customer Experience in Financial Services · London · June 2026 Keynote Speaker — Tesco Ignite Global Technology Conference · 5,000 colleagues live
Find me
linkedin.com/in/ianfinn · productatscale.substack.com · github.com/ianjfinn · ianfinn.carrd.co
Contact
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