// .net · umbraco · full stack
brainworm
Independent software studio run by Jack Stunell. We specialise in .NET, C#, and Umbraco CMS — building web applications, headless APIs, and complex CMS architectures. Available for contract work.
— work
Led the migration of a large government website from Umbraco 7 to Umbraco 10 on .NET 6. Built APIs for third-party integrations, implemented EF Core data layers, and ran regular sprint demos with the client.
Joined mid-project to co-lead a headless Umbraco 10 build on .NET 6. Implemented OIDC auth with Identity Server and Azure AD, containerised the CMS with Docker, and wired up Azure Service Bus and ExamineX search.
Ongoing technical support for a large headless CMS powering Diageo's core web estate. Working across AWS infrastructure, MongoDB, GraphQL, and a React frontend.
Support across client sites including Tesco PLC, Ocado, ArcelorMittal, and GSK. Led the CNHI website build in Umbraco 8 and managed a full Azure infrastructure rebrand for ArcelorMittal and associated brands.
Owned jaywing.com development and led the ground-up build of the Jaywing Risk website in Umbraco 8. Responsible for technical specs, server architecture, CI/CD pipelines, and production deployments.
Architected an internal tool that converted InDesign files into Umbraco Cloud websites. Built a modular rapid-site framework used across the agency, implemented Azure DevOps CI/CD, and published two open-source Umbraco packages.
Lead developer and technical architect at an Umbraco Gold Partner. Managed and mentored the dev team, set coding standards, and scoped and built projects for clients including Britax, Amnesty International, and The OR Society.
Senior developer at a London PR and digital agency, working across a wide range of client-facing web projects.
Early career development role at a London media company.
— about
brainworm is Jack Stunell's independent software studio. With nearly two decades working across agencies, digital studios, and enterprise clients — we know how to get things built and shipped. We specialise in .NET, C#, and Umbraco CMS, and we're equally comfortable with headless architectures, Azure infrastructure, and modern frontend stacks.