Situation: Our mobile checkout conversion was dropping because users found our multi-step address and payment entry form cumbersome on small mobile screens.
Task: I collaborated with our product designer and product manager to redesign the checkout flow into an intuitive, frictionless one-page experience within a four-week sprint.
Action: Instead of waiting for a finished design handoff, I invited the designer to pair with me directly in code spikes. When the designer proposed an animated sliding drawer for payment selection, I built a quick prototype demonstrating that the animation dropped frames on budget Android devices. Together, we iterated on a lightweight CSS accordion that achieved the same visual elegance with zero frame drops. I also suggested integrating browser autofill and payment request APIs (Apple Pay and Google Pay), which drastically reduced manual typing.
Result: We launched the revamped checkout on schedule. Mobile checkout completion rates increased by 18%, average checkout time dropped from ninety seconds to under thirty seconds, and our close engineering-design partnership became the standard model for future squad initiatives.