Onboarding that converts and complies
Sign-up flows with KYC, document verification and SCA designed so users actually reach the end. Every extra step has to justify its existence.
Web development · Fintech
Web development for Fintech
We build the web layer of your financial product — onboarding, digital banking, operations dashboards — with the security the sector demands and the fluidity users expect.
THE CHALLENGE
The challenges of Fintech
Fintech software operates under constant regulatory and security pressure, where a failure carries direct financial and reputational cost. It needs regulatory rigour, traceability and an architecture that scales without compromising trust.
- Regulatory compliance (PSD2, PCI-DSS, GDPR)
- Financial data security
- Scalability under transaction spikes
- Integration with payment gateways and core banking
- Time-to-market without compromising rigour
How we help you
In fintech, the interface is where trust is won or lost. A six-step onboarding with a confusing validation makes users drop out exactly when they have already handed over their personal data, and a slow dashboard pushes the operations team into a parallel spreadsheet. We build financial frontends with React and Next.js taking care of the two things that rarely go together: meeting PSD2, SCA and GDPR, and making the experience feel like a product rather than a government form.
A frontend secure by design
Session, token and permission handling done with judgement: no sensitive data in local storage, and no authorisation logic that lives only in the browser.
Operations dashboards people actually use
Internal interfaces with tables that handle volume, filters that respond and an audit trail on every action, so nobody has to export to a spreadsheet.
Performance measured, not promised
Core Web Vitals monitored in production with real user data, because in acquisition an extra second of load time is paid for in cost per customer.
WHAT YOU GAIN
Web development, results-driven
- A senior React, Next.js and TypeScript team, with no juniors learning at your expense
- Web applications that genuinely load fast, measured in Core Web Vitals
- Accessibility and technical SEO built in from the very first component
- A design system of your own so the interface grows without becoming a collage
- A frontend that integrates with your backend and your systems, not an isolated storefront
FAQ
Frequently asked questions
Can the frontend comply with PSD2 and strong customer authentication?
Yes. We implement SCA flows and the integration with authentication providers so the experience stays smooth without loosening control. The rule we never break: authorisation is always validated server-side — the frontend is never the last line of defence.
How do you reduce drop-off during onboarding?
We measure where people fall off step by step and cut whatever doesn't earn its place. We save progress so users can resume, give specific errors rather than generic ones, and leave heavy verification until the end, once there is commitment.
Do you work on a financial product that is already live?
Yes. We audit the current frontend, its performance and its friction points, then evolve it in stages alongside what already exists. We don't propose a rewrite unless the numbers justify one.
Custom web build or a template CMS?
If all you need is to publish content and little else, a template CMS is the honest answer and we will say so. Custom development starts to pay off when there is business logic, users with permissions, integrations with your systems, or performance a template cannot give you.
Why React and Next.js?
Because they combine a huge ecosystem with server rendering, which is what lets you have a rich application that is also indexable and fast. Next.js gives us SSR, routing and image optimisation without building our own infrastructure. If your case does not justify it, we will propose something simpler.
Do you only work in Madrid?
We are based in Madrid and work remotely with clients across Spain, Europe and Latin America. If you prefer in-person meetings in Madrid, we do them; if you prefer remote work with short meetings and frequent releases, that works too.
Can you step into an existing web application?
Yes. We audit the code, dependencies and real-world performance to understand what is there, and from that point we stabilise and evolve it in stages, without stopping your operation or defaulting to a rewrite.
Shall we build something that scales, together?
Tell us about your project. We'll get back to you with a concrete plan and a senior team — not a generic quote.