Technical Excellence & Problem Solving

Level: 101 (Entry to Mid-Level)
Category: Technical Challenges & Engineering Excellence

Question 3: Adapting to Technical Obstacles

Question: Tell me about a time when you had a plan for approaching a technical problem, but encountered unexpected obstacles. How did you adapt your approach and what was the outcome?

Strong Answer Example

At Uber, I was tasked with implementing a real-time fraud detection system for rider payments. My initial plan was to use a rules-based approach with hardcoded thresholds for suspicious transaction patterns. The system needed to process millions of transactions daily with sub-second response times.

Initial Plan and Execution:
I started by collecting historical fraud patterns and defining clear rules:

• Flag transactions over $500 from new accounts
• Alert on multiple failed charge attempts
• Monitor geographic anomalies in payment locations

The development progressed smoothly through the specification and initial implementation phases. I built a robust rules engine using Java and deployed it to a small subset of traffic for early testing.