Principal architect and engineering leader with 25+ years in C#/.NET. SaaS APIs, microservices, data platforms and AI systems — and a suite of privacy-first local-AI apps I build myself.
I find the opportunity, prove it with working software quickly, then get the organisation to adopt it. I write the code, set the architecture and lead the people.
LLM applications, RAG, agents and governed AI gateways — practical systems people use daily, with PII protection and audit built in.
.NET microservices on Dapr, event-driven design, API and SaaS platforms, observability from day one.
Azure Data Factory, Databricks, Purview and Power BI — and the operating model and culture that make a platform stick.
At Foxit, the CEO, CIO and CCO moved me between units to start new things. Each one has a short story — the situation, the decision and what happened. Read the case studies →
Proposed the cloud offering and coded the full stack: developer portal, self-service API provisioning, SDK samples, docs and a live API console.
Product Owner and Scrum Master for four engineers. One-week sprints with open reviews for anyone in the company.
Introduced service invocation, pub/sub, state, actors and distributed tracing to a 15-person German/Irish team, with a reference implementation.
Designed and built on Azure, and taught data ownership: intake, prioritisation, classification and department-run data teams.
Connectors for Microsoft 365, Salesforce and Jira; agents; a knowledge graph with tiered memory; and a governed AI gateway with PII redaction.
Aligned Finance teams across China, the US, Germany and Ireland: data migration, integration, training and reporting.
Through my own company I design, build and publish local-AI software — apps that run on your device, keep your data with you, and ship to Windows, macOS, Linux, iOS and Android.
A cross-platform .NET 10 / Avalonia platform of 350+ shared libraries powers 60+ AI apps. 14 products are published on the Microsoft Store, Apple App Store and Google Play, in 16 languages.
llama.cpp, Microsoft Foundry Local (NPU/GPU), ONNX Runtime and cloud models behind one streaming API — with model download, self-update, tool calling and routing.
Microsoft Agent Framework and MCP, hybrid retrieval (vector + BM25 + reranking) and a personal knowledge-graph memory.
Consent-gated, content-free telemetry; signed licences across three app stores; end-to-end encrypted device federation; an OpenAI-compatible enterprise AI Server.
The full detail is in my résumé. Here is the short version.
Designing and building a cross-platform suite of privacy-first, local-AI applications.
SaaS API platform, e-signature product, .NET/Dapr microservices, Azure data platform and internal AI platform. Worked with teams in Ireland, Germany, China and the US.
Grew a bootstrapped consultancy to 20+ engineers serving GSK, Prudential, ThyssenKrupp, TÜV Rheinland, Veolia and Giesecke+Devrient. Every project on time and on budget. Built a mobile GIS and workflow system for 10,000+ ThyssenKrupp Elevator technicians.
Led the .NET re-architecture of EF.com and Englishtown.com (2M users, 100+ countries) across Boston, Hong Kong, Shanghai and India. Cut release effort by about 70%.
Led the prototype that won a HK$30M smart-card tender (V.H. Soft); IBM and Oracle pre-sales and delivery; team lead of 10 developers designing a WfMC-standard workflow engine SDK.
Depth where it counts: C#/.NET daily for over 20 years.
BSc (Hons) Computer Science, First Class — University of Hertfordshire, UK
Higher Diploma, Computer Studies, Distinction — City University of Hong Kong
Champion (twice), Jiangxi Innovation & Entrepreneurship Competition · Top 10, Alibaba Cloud Startup Contest · 2nd Prize, Microsoft Web Services Xcellence Awards · 3rd Prize, Sun J2ME Open
Hiring for a Principal / Staff architecture role or a Head of Engineering position? Or want to discuss a project? Send me a message and I'll reply within a working day.
Idea to working software in weeks, not quarters.
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