Software & App Development in Cardiff

Cardiff is Wales' capital and its centre for government, media and financial and professional services, including a substantial insurance and fintech presence. It also carries a genuine bilingual dimension most software vendors never account for — a Welsh Government or public-sector-adjacent client, in particular, may need a system that genuinely supports Welsh as well as English, not a checkbox translation bolted onto an English-first interface.

What we build

Custom web platforms in Python (FastAPI or Django) with a React front end are the usual foundation, built around the process you actually run. Where genuine bilingual support is a requirement — public-sector work especially — we design the interface for both languages from the architecture stage, not as a translation layer added at the end. iOS and Android apps connect into the same backend for mobile-facing products, and for Cardiff's insurance and financial-services businesses, dashboards get built to the reliability standard that sector expects as default.

Bilingual is a product requirement, not a compliance box

A Welsh-language interface built well requires the same discipline as any other genuine localisation — real translation, correct handling of Welsh grammar and text length in the UI, not a machine translation dropped into English-shaped layout. We treat it as a real requirement to design for, where it applies, rather than a box to tick.

How the project runs

We map users, workflows and integrations before writing code, then build in sprints with regular check-ins and continuous testing throughout. Where AI genuinely fits the problem, we build it as RAG-based AI integration, grounded in your own data.

Beyond the core build

API and systems integration connects what you already run; custom dashboards give a clear operational view, particularly for insurance and financial-services reporting; SaaS product development applies for products built to sell. On mobile, see Android development and hybrid app development.

Questions Cardiff and Welsh businesses ask us

Can you build a genuinely bilingual Welsh-English interface, not a machine translation?

Yes — where bilingual support is a real requirement, we design the interface for both languages from the architecture stage, handling correct Welsh grammar and UI text length rather than a translation plugin bolted on afterward.

Do you build software for Cardiff's insurance and financial-services sector?

Yes — Cardiff has a substantial insurance and fintech presence, and we build to the reliability and reporting standard that sector expects as the default, not an upgrade.

Do you have experience with Welsh public-sector software requirements?

We work through Welsh public-sector procurement and bilingual requirements as part of the scoping conversation, designing the architecture around them from the start where they apply.

Is bilingual support worth building if most of our current users search in English?

It depends on your audience — for public-sector-adjacent and community-facing Welsh businesses it is often a genuine, under-served opportunity; for a purely commercial business outside Wales it may matter less.

Get a free project quote for your Cardiff or Welsh software build.