Tell me about a time when you had disagreements with your colleagues

In an internship, I disagreed with another engineer about a bug fix for a checkout issue. I wanted to patch the specific error quickly, but they were concerned that my change would hide a deeper problem and create more support issues later. Instead of pushing harder in the meeting, I asked if we could walk through the recent incidents together, and I learned they had seen a similar shortcut cause repeated failures before. We ended up doing a small safe fix for the immediate problem and adding one extra check so we could confirm the root cause the next day. That delayed us by a few hours, but it prevented a repeat issue and taught me to ask for context before getting attached to my first solution. I worked with that engineer again later, and our communication was much smoother after that.

At a small startup I built a short onboarding flow and the product designer wanted a heavy animated background to make it look flashier. I was worried it would slow down the experience for users on older phones — our analytics showed about 25–30% of users were on low-end devices and support had notes about slow startup times. Rather than just push back, I made two quick prototypes (with and without the animation), measured load times, and proposed an A/B test so we could let real users decide. The designer agreed, and I also suggested lazy-loading the animation so it wouldn't block the initial view. The experiment showed no meaningful increase in conversions but did hurt load time, so we shipped the lighter version; the situation taught me to resolve design disagreements with data and concrete, low-risk experiments.