Industries
Fintech software development for UK companies
Financial software has very little room for error. Money has to add up exactly, every action needs an audit trail, and regulators expect you to be able to show how things work.
The first question for most fintech founders is regulatory: do you need to be authorised, or can you work under a partner? Many start by building on regulated banking-as-a-service or payments providers, which can be quicker, at the price of depending on them. Do take specialist legal advice here, as the answer shapes your product, your partners and your timeline.
From a technical point of view, financial systems need some different habits. Money should never be stored as a floating-point number. A ledger should be append-only, so that you correct errors with new entries rather than rewriting history. Operations need to be idempotent, because a network retry mustn’t move money twice. And you’ll want to be able to reconstruct precisely what happened to any transaction, and why, years later.
Consumer Duty and product design
The FCA’s Consumer Duty requires firms to deliver good outcomes for retail customers, and this reaches into design. Confusing journeys, dark patterns that push people towards unsuitable choices, and cancellation that’s harder than sign-up can all become regulatory issues. Monitoring outcomes, including for vulnerable customers, means building the right data capture into the product. Design and compliance belong in the same conversation.
Regulation to design around
FCA authorisation
Payments, e-money, lending and investments are generally regulated activities. Establish your position, or your partner’s, before building.
Consumer Duty
Requires good outcomes for retail customers, and evidence of them, which affects product flows, communications and data.
Strong Customer Authentication
Most electronic payments and sensitive account access require two-factor authentication under UK rules, with certain exemptions.
Open Banking
Regulated access to account data and payment initiation through bank APIs, usually reached through an authorised provider such as an aggregator.
PCI DSS
Applies wherever card data is handled. Using a provider’s hosted fields keeps most of the burden away from your systems.
Anti-money laundering
The Money Laundering Regulations require customer due diligence, and suitable identity checks and monitoring need designing in.
What we can build
Customer apps and portals
Secure onboarding, accounts, payments and statements.
Ledgers and reconciliation
Double-entry systems with full audit trails and automated reconciliation.
Open Banking integrations
Account data and pay-by-bank through providers such as TrueLayer or Plaid.
Compliance tooling
KYC workflows, transaction monitoring queues and regulatory reporting.
Related services
Fintech questions
Do we need FCA authorisation?
Can you help us pass security reviews from banks and partners?
Should we build our own ledger?
Building for fintech?
Tell us what the software has to do. We will read it properly and reply by email with sensible next steps.