Technical consultancy. Full-stack engineering.
AI-augmented delivery.
Team-level output.Startup speed.
You need production software yesterday. Your team is stretched, your roadmap is slipping, and hiring takes months. I deliver disproportionate output for a solo operator, in weeks, with deep architectural experience paired with AI-augmented engineering.
This isn't a portfolio of mockups.
It's what one person shipped.
Identity verification platform
A complete product, not just a libraryA full identity verification ecosystem built from the ground up. A protocol specification defining the verification flow. A web application for managing verifications. A drop-in SDK that adds age verification to any website with one script tag. An automated verification bot that processes credentials without human intervention.
At the core: a deepfake-proof spoken challenge-response protocol. The system generates unique word sequences that must be spoken live. You can't fake it, you can't replay it. Built-in silent duress detection knows if someone is being coerced. Encrypted group synchronisation shares verification state across a team securely.
MCP identity server
Secure signing and identity management for AI agentsAn MCP server for cryptographic identity management. Handles remote signing so private keys never leave the server. Derives unlimited unlinkable personas from a single master secret: one identity, many faces, mathematically proven to be unconnectable.
Tor by default for network-level privacy. Runs on a Raspberry Pi, sovereign infrastructure you actually own. Now at version 8, battle-tested across real deployments. The most thoroughly tested package in the ecosystem.
API payment infrastructure
Five interconnected layers, built from scratchA complete payment stack implementing the L402 and x402 protocols. Any API can become a paid endpoint in one function call. Five layers that work independently but compose into something greater: middleware for gating APIs. A service announcement layer so paid endpoints register themselves for discovery. An automated indexer that crawls and catalogues every available paid API. An MCP server that lets AI agents autonomously discover, pay for, and consume premium APIs without human involvement. A monetisation gateway that turns any AI endpoint into a paid service in 30 seconds.
Six runtimes: Express, Hono, Deno, Bun, Cloudflare Workers, and more. Five payment backends. TypeScript, JavaScript, and Rust implementations. The most downloaded package in the ecosystem, with real production usage.
Geospatial
3 packagesPolygon coverage, spatial encoding, fair meeting-point calculation via isochrone intersection
Cryptography
5 packagesRing signatures for anonymous group proofs, range proofs, secret sharing with human-readable word output, time-rotating spoken tokens
Access Control
7 packagesDeterministic sub-identity derivation, epoch-based encrypted access with key rotation, verifiable attestations
Payments
6 packagesL402 and x402 protocol implementations, service announcement, automated discovery, AI-driven API consumption
All interconnected. All built from scratch. All by one person.
AI-augmented, not AI-dependent.
I architect. AI accelerates.
The hard decisions (what to build, how to structure it, where the seams go) come from deep experience. AI handles the volume: implementation, tests, documentation, refactoring across 40+ repos simultaneously.
Full-stack, any stack.
TypeScript, C#/.NET, and Rust end-to-end. React Native mobile apps. Next.js APIs. Protocol design and SDK development. Legacy system modernisation: strangler fig patterns, incremental rewrites, data migrations.
Single vision, zero handoffs.
No miscommunication between frontend, backend, and infrastructure. No sprint planning overhead. No "that's not my module." Complete ownership from database to deploy, with one coherent technical vision throughout.
Real outcomes, not hypotheticals.
6x latency reduction
A core calculation engine was too slow for real-time use. I analysed the bottlenecks with BenchmarkDotNet, redesigned the architecture using source generators and clean patterns, then rebuilt it. Latency dropped by 6x. The new architecture also showed exactly where further gains could be made across the rest of the stack.
Zero tests to comprehensive test suite on a legacy .NET monolith
A legacy .NET application built entirely on stored procedures and triggers, with no tests and no documentation. I performance-tuned the critical pain points first, then designed the decomposition into a modular architecture. Built the first vertical slice with full test coverage using black-box testing against sanitised production data.
Legacy platform modernised, retention restored
A flagship product with long-standing performance issues needed urgent attention. I identified the root causes, drove targeted fixes, and defined the next-generation architecture: React, Federated GraphQL, .NET microservices on Azure. Delivered high-quality MVPs on time and to budget. Also migrated millions of lines of legacy C/C++ code to modern stacks with comprehensive automated test coverage.
Built a migration utility for a major investment bank to transfer documents and data from a legacy platform to SharePoint under very tight deadlines. It had to be right first time. Zero defects, uneventful go-live.
How engagements work.
Remote-first, UK-based
Most work happens remotely. Available for on-site workshops, architecture sessions, or kick-offs when face-to-face matters.
Project-based or retained
Fixed-scope delivery for defined projects. Weekly retainer for ongoing work. No long-term lock-in either way.
Ship in weeks, not months
Most engagements deliver in 2 to 8 weeks. Complex modernisations run longer with clear milestones and regular deliverables.
Starts with a conversation
A 30-minute call to understand what you need. You get an honest assessment of fit, approach, timeline, and cost. No obligation.
“He doesn't just tell you what a solution should be, he actually builds it as a proof of concept. You always get an honest, real-world view of the challenge.”Former colleagueHealthcare, via LinkedIn
“He is the one to go to if you want to solve problems. A key reference person for everybody in the team: architects, developers, business analysts, product managers. Having him in the team means success.”Former colleagueHealthcare, via LinkedIn
“Always willing to support discussions at any level of the organisation. An accomplished presenter who links the solution back to the strategic need.”Former colleagueHealthcare, via LinkedIn
Enterprise pedigree.
Startup velocity.
Independent consultant since 2011. API design, legacy transformations, architecture governance, performance tuning. Full-stack across every era of modern software: C, C++, Java, C#/.NET, TypeScript, JavaScript, Rust, React Native.
Delivered for Barclays, HSBC, Deutsche Bank, Experian, and Tunstall Healthcare across Financial Services, Healthcare, PropTech, and E-commerce.
Tell me what you need built.
I'll tell you honestly whether I'm the right fit, what it'll take, and how fast we can ship it.