Hi, I'm Paul Leo (MBA, MEng), founder of TapDigital. I've spent over 16 years shipping high-scale iOS applications. I specialize in modern Swift, SwiftUI, strict concurrency, serverless architectures, AI integrations, and Scrum Mastery.
Shipping robust native code since SDK launch in 2008
Burger King, Met Office, and Ekstra Bladet (Danish App of the Year)
Bespoke pose estimation, Bluetooth sports IoT, and AI toolchains
A timeline of premium technical deliveries spanning startup architectures, IoT hardware, and high-scale consumer apps.
Architected and coded a greenfield SwiftUI app in pure MVVM supporting dementia care, fully optimized for the Swift 6.3 strict concurrency model.
Designed and shipped custom iOS and Android Installer utility apps built in SwiftUI MVVM to configure home-battery IoT systems.
Engineered an agentic-AI iPad and macOS companion application enabling development teams to perform rapid, continuous, over-the-shoulder code reviews.
Designed and built an iOS cryptographic identity demonstrator application highlighting zero-knowledge-proof (ZKP) privacy protocols for personal credentials.
Served as Lead Technical Architect directing architecture across four flagship products for Chelsea Football Club's innovation arm.
Built the Snatch AR gaming app (reaching the UK App Store Top 10 with over 1M+ active players).
An elite developer's toolbelt refined across nearly two decades of production deployment and enterprise integrations.
Deep architectural dives into our complex, production-hardened engineering projects.
An agentic-AI powered iPad and macOS desktop application transforming code review workflows. It enables instant automated diagnostics, BDD coverage analysis, and architectural suggestions in real time.
View Case StudyServing as Lead Architect for Chelsea FC's digital innovation hub to build, deploy, and scale four distinct products combining on-device computer vision, iOS Bluetooth IoT integrations, and SwiftUI games.
View Case StudyProfessional accolades from executives, engineering leads, and stakeholders who have scaled products with Paul.
"Paul brought a rare combination of high level strategic thinking and execution to Hypercare. By introducing the JTBD methodology, he completely reimagined what AI could achieve for our business and our users. He brought immense expertise in both mobile product architecture and practical, value driven AI integration. Paul didn't just build a pilot app, he fundamentally transformed our product direction."
"Paul has been contracting for Powervault Ltd. He has created a highly intuitive initial installer app on iOS devices. Managed and performed an audit of Powervault systems, showing where we needed assistance and where we were strong. He created the workflow and initial outlines for a major new app project of which we intend to start developing soon. Helped us with adopting Agile processes and methodologies. I cannot rate Paul highly enough, he is hugely talented and is a great asset."
"I had the pleasure of working with Paul at two different companies, and in both instances, he consistently impressed me with his approach and professionalism. Paul is highly goal-oriented, combining strong technical expertise with a clear understanding of user needs. He does not just focus on delivering solutions. He thoughtfully considers the end audience, ensuring that the products he works on are effective and user-friendly. He is detail-oriented and approaches challenges with a logical, structured mindset, which allows him to deliver high-quality results consistently. Beyond his technical and analytical strengths, Paul is also open, trustworthy, and a great collaborator. I would welcome the opportunity to work with Paul again and strongly recommend him to any team looking for a reliable and thoughtful professional."
