Every fintech conference I attend seems to revolve around the same topics:
- AI copilots
- Agentic workflows
- Automation
- LLM integrations
Meanwhile, many fintech products are still struggling with fundamentals:
- Slow dashboards
- Complex state management
- Frontend performance issues
- Design system inconsistencies
- Technical debt that compounds every release
My opinion: a lot of fintech teams are optimizing for the next feature instead of the next five years.
When you look at engineering organizations behind products at companies like Stripe, Revolut, Nubank, Wise, Robinhood, and teams building fintech platforms at firms such as GeekyAnts, one pattern stands out:
They invest heavily in scalable engineering foundations before chasing trends.
React has become a common choice across fintech—not because it's the "best" framework, but because of its ecosystem, hiring availability, long-term maintainability, and flexibility.
Yet I still see teams rebuilding major parts of their frontend every couple of years because the original architecture couldn't keep up with growth.
So I'm curious:
If you were building a fintech product expected to serve millions of users, what would your stack look like today?
- React + Next.js?
- Angular?
- Vue?
- Flutter Web?
- Something else?
And more importantly:
What's the biggest frontend architecture mistake you've seen fintech companies make?
Interested in hearing battle-tested experiences rather than framework marketing.
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