I make what matters

How can I help?

Full-stack engineer since 2004, building with LLMs since 2021. I embed with customer teams, learn the real business rules from the people who run the work, and ship production systems quickly. First, ten years as a frontend and then full-stack engineer. Then eight years leading human-centred design, product and strategy with customers and executives in banking and federal government running technical workshops, co-designing with stakeholders, and explaining complex systems to non-technical people. I use AI coding agents every day, and I build the checks that make their output trustworthy. R&D work evidence: Dual Substrate ships with 16 CI-gated validation suites and a claims registry that ties every published result to the harness that produced it.

Published research: researchgate.net/profile/david-berigny
LinkedIn: linkedin.com/in/davidberigny

Recent achievements

Two-year independent build of a model-agnostic chat harness with ledger-based memory, published with a reproducible evaluation harness and its limits stated. AI tooling at enterprise scale (Kmart). Shipped AI-assisted design-to-code tooling across React, Flutter and Figma on a platform serving 3M+ monthly users, and mentored engineers on using it. As the solo embedded engineer, shipped a proof of concept on on-prem SAP in five days. By week five, hundreds of quotes and jobs were moving from sales to the shop floor. Explained verifiable credentials and decentralised identifiers to technical architects and BAs, mapping traceability for beef exports facing the EU Deforestation Regulation. Over 300+ sessions, the platform secured $5M in seed funding, then a further $6M after the EUDR was announced.

Published: "Governing Hybrid AI for Institutional Resilience" - ResearchGate

Some of my work

FDE: A production-facing pipeline inside five weeks

AI Research Toolkit

AI Agent Operating System (Harness)

AI/ML Connected Policing

$1B Digital and AI Portfolio

National Traceability Platform

Digital Trust Development

Digital Health Platform

Westpac Mobile Banking

David Berigny

"David is an extremely talented service designer who really understands how to establish the core needs of the users and is able to then satisfy those requirements with elegant, simple, and intuitive solutions. He is a remarkably confident public speaker who finds it easy to convey the problem space and its challenges with a wider audience. I greatly enjoyed my time working with him, it's rare to find someone so knowledgeable, so empathetic to the user, and who is also eminently likeable as a person. I hope I get to work alongside him again one day." — James Cutts (Principal Designer, Bolt.com)

"Working with David has been a transformative experience in my career journey. His mentorship has not only enhanced my storytelling abilities and refined my UX portfolio but also instilled a profound confidence in my own capabilities. David’s approach fosters human creativity, equipping individuals to navigate and lead in the ever-evolving digital landscape. By guiding me to view career challenges through the lens of UX problem-solving, David has empowered me to embrace change and recognise the value of my experiences. He has prepared me to make a tangible impact in my career." — Nina Cogan (Product Manager, MinterEllison)

"David is a shining example of what happens when you get someone who is creative, passionate, intelligent and resourceful, and then combine it with an easy going, relaxed, non-ego driven and ethical designer. As the design stream lead on AMP's award winning collaboration platform, I was lucky enough to work very closely with Dave. He is responsible for the amazing visual design, responsive design and building the key user interactions. Not an easy feat on a platform plagued with usability issues out-of-the-box. I found Dave always keen to discuss ways to adapt the design based on usability testing results, and his non ego driven attitude made it incredibly easy to iterate the design to a point that it was something we are all exceptionally proud of. Dave also came up with the winning idea to create an internal gift economy in AMP, the result of which is a collaborative art piece permanently hung in AMP's foyer. I cannot recommend Dave highly enough, it's a lucky team that gets the joy of working with him." — Octavia Maddox (Chief Product Officer, Kmart & Target)

https://www.linkedin.com/in/da...