When banking software feels slow, users leave
A growing fintech needed its customer app to stay fast from zero users to over a million—without outages on busy days.
The problem
The old stack was slow, crashed during peaks, and couldn't scale. The interface felt dated, and the mobile experience was uneven.
- close Pages took several seconds to open
- close One big codebase that was hard to change safely
- close Mobile flows didn't match desktop quality
Designing for speed and calm
What we did
We split the front end into smaller, testable pieces and used a flexible content layer so marketing and product could update copy without redeploying the whole app. We also tightened the data path so updates appeared almost instantly.
We refreshed the interface for accessibility and phones first, then moved the backend to a cloud setup that adds capacity automatically when traffic spikes.
Outcomes
Numbers your leadership can recognise.
Measured improvements on real‑world load metrics
Longer, more focused sessions
No major incidents on high‑traffic releases
Technologies
Modern, well‑supported tools chosen for this product—not hype.
Want results like this?
Tell us about your users, constraints, and timeline—we'll suggest a sensible first step.