One person, two disciplines. I keep ledgers accurate and VAT returns filed on time for UK businesses — and I build the websites and internal tools that small businesses run on across the UK, Spain and Bolivia.
What I do
Most of my work is for owner-managed businesses too small for a finance team and too particular for an off-the-shelf website.
End-to-end record keeping for a business that needs its numbers to be right, not just present. Primarily Xero, with Hubdoc for document capture.
Websites and internal tools built to be maintained, not just launched. I work end to end — data model, interface, deployment, handover.
Selected work
Happy to walk through any of these in detail on a call.
A full site with a five-step reservation flow the restaurant owns outright, instead of paying commission per cover to a booking platform. Built plainly enough that the team can edit a menu without calling a developer.
The site for a station with a very large social following and comparatively little audience of its own. Server-rendered so it can actually be found, with the live player and schedule kept current alongside the station's internal teams.
A community futsal league running across London venues, with team and player registration, league tables, results and fixtures. Six years of continuous work on one codebase, built so a volunteer can update a matchweek by editing data rather than risking a deployment.
Sole charge of the books for a hospitality business: daily takings through to VAT return preparation, tips handled properly through a liability account rather than buried in revenue, and card settlements reconciled against POS reports so the two never quietly drift apart.
Tools & methods
About
I'm Geischglin Rojas. I hold a first-class degree in Accounting and Financial Management from the University of Northampton, and I run the finance function for a UK restaurant. That means I'm responsible for the books, the reconciliations, the VAT work and the things that have to balance at the end of the month. For now that work is bookkeeping rather than accountancy practice: I don't prepare statutory accounts or tax returns. If you need those, we can talk through the options.
I also write software, and have done for longer than I've done books. My first degree is in Computer Science, from the Universidad Politécnica de Madrid. I take projects from data model to interface, deployment and handover myself — one person responsible for whether the whole thing works, rather than someone responsible for each part. What matters is what happens after launch. A website is not much use if the owner has to call the developer to change a price. An internal tool is not finished if nobody can maintain the data. I build around what the client actually needs to do with the system, and hand over something they can run themselves.
The combination pays off in both directions. Knowing what a card settlement actually is means I can build a system that takes payments without quietly corrupting the VAT position behind it. Having built systems means I can look at a bookkeeping process and see which parts are load-bearing and which are just how someone did it once. Whichever one you came for, you get both.
I'm based in London, with clients across the UK, Spain and Bolivia — in English and Spanish. Different businesses, different requirements. The constraint is the same: a system has to work for the people using it, and they have to be able to afford to keep it running.
