Majenko is the lead (and yes, sole) designer of electronic components and devices for Majenko Technologies. Specialising in small devices for prototyping and development in the microcontroller sphere, he spends his days (and nights too) crafting Firewing and Arduino shields, and breadboard modules (breadcrumbs).

He is also one of the main developers for the RetroBSD project.

His devices are sold through his eBay store.