Portfolio
Portfolio
Three businesses that Sabia Solutions owns and operates: an applied AI engineering practice, a live UK marketplace, and regulated tax software engineered against the HMRC APIs. Each write-up covers the constraint, the design decisions and what the work produced.
QAI Labs
Applied AI engineering
An applied AI engineering practice that puts production AI on infrastructure the client controls, together with the agentic frameworks that make those systems auditable.
Constraint · Organisations that cannot send data to a third-party API are usually told to wait. There was no practice inside the group that could serve them, and no evidence we could do the work.
Read the write-upSkipHireCompare
Marketplace and directory
A UK skip hire comparison directory built on geospatial search, with a paid listings model and direct debit collection for suppliers.
Constraint · Skip hire is bought locally, priced opaquely and sold by small operators with no web presence. A national directory only works if it can answer "who serves this postcode" fast, and if suppliers will pay to be found.
Read the write-upEasy Tax Digital
Regulated SaaS
Making Tax Digital filing software for sole traders and landlords, engineered against the live HMRC API surface, with launch deferred on commercial grounds.
Constraint · Making Tax Digital for Income Tax obliges millions of sole traders and landlords to file quarterly through recognised software. Recognition requires passing HMRC's fraud prevention and testing regime, which is the barrier most small vendors do not clear.
Read the write-upStart with what is in the way.
Most of this work is shaped by the obstacle rather than the ambition. A deal that keeps stalling at the same stage, a process nobody owns, a product that will not sell, a decision that has been open for months. Tell us yours and we will say honestly whether we are the right people for it.