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Banking Software Development · Cardiff

Banking Software Development in Cardiff

Software for Cardiff banks and credit institutions, where availability is a supervised obligation rather than a service level. Firms are expected to identify their important business services, set the maximum tolerable disruption for each, and be able to show they stay within it under severe but plausible scenarios — which decides how the software is built.

Why this comes up

The problem

A change goes in, a service is degraded for four hours, and nobody can say whether that breached a tolerance because none were defined.

What you get

What we deliver

  • Important business services identified with tolerances the design respects
  • Failure modes mapped, including the third parties the service depends on
  • Records written as appendable entries rather than editable rows
  • Change controlled so a release cannot be traced to nobody
  • Testing against disruption scenarios, not only against functional cases
  • Evidence produced as a by-product of running, not assembled for an audit

Want this scoped for your business in Cardiff?

Thirty minutes, no charge, no sales script. You leave with a written summary of what banking software development would actually involve — whether or not you use us.

Book a 30-minute call

Working in Cardiff

Wales

Cardiff has a significant broadcast and media sector alongside a large public-sector presence, and Welsh-language provision is a genuine requirement on public-facing work here rather than a nice-to-have.

Public sector and broadcast work is common, and bilingual provision is usually a requirement rather than an option.

Sectors we work with in Cardiff

  • Media & Broadcasting
  • Financial Services
  • Public Sector
  • Higher Education
  • Sport

What we work with

Technologies and platforms

  • Java
  • PostgreSQL
  • Kubernetes
  • Microsoft Azure

Who we work with

Industries we serve

  • Retail banking
  • Building societies
  • Credit unions
  • Commercial banking
  • Financial services

Why us

Why Cardiff businesses choose Asionis

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

How we work

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

Banking Software Development in Cardiff — common questions

What is an impact tolerance in practice?
The maximum disruption to a service the firm judges acceptable before harm becomes intolerable — expressed as time, volume or number of customers. It is a design input: a two-hour tolerance rules out architectures whose recovery has never been measured.
Why can't records be editable?
Because a financial record that can be changed without trace cannot be relied on. Corrections belong as new entries that reverse or adjust the original, which is how ledgers have always worked and what supervisors expect to see when they reconstruct a sequence of events.
Do third parties count?
Yes. A dependency on a hosting provider, a payments processor or a data supplier sits inside the service, and the firm remains accountable for the outcome. Resilience work that stops at the boundary of your own code misses where most outages originate.
How much documentation is enough?
Enough to reconstruct what happened without asking anyone. If the system logs who approved a change, what was deployed and how the service behaved, that is evidence. If it depends on a document someone wrote afterwards, it is an account rather than a record.
Do you work with businesses across Cardiff?
Yes. We are based in Leicester, United Kingdom and work with clients throughout Wales, including Cardiff and the surrounding Cardiff area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Cardiff businesses do you usually work with?
Public sector and broadcast work is common, and bilingual provision is usually a requirement rather than an option. Beyond that we work across Media & Broadcasting, Financial Services, Public Sector, Higher Education and Sport.
Do you cover the areas around Cardiff?
Yes — we work throughout Wales, including Bristol, Swansea. Cardiff is an urban area of roughly 490,000+, and we take on work across the wider Cardiff region rather than the city boundary alone.

Talk to us about Banking Software Development in Cardiff

A 30-minute call with someone who would actually work on it. No sales script, no obligation.

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom