Describe Past Project And Debugging Approach

Q: Describe Past Project And Debugging Approach

This is a Behavioral & Leadership interview question from SoFi for Software Engineer roles. View the full question and solution on PracHub.

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Question

Behavioral + Technical Leadership: End-to-End Project and Production Bug

Provide a recent, specific example of a project you led end-to-end. Use one concrete incident to show how you diagnose and fix a difficult production bug.

Cover the following:

Project overview

Goal, scope, and your role/ownership
Key stakeholders and constraints (SLA/SLO, scale, compliance, deadlines)

Production bug context

Symptoms and business impact (who/what was affected, severity, timeline)
How it was detected (alerts, dashboards, user reports)

Debugging approach

Initial hypotheses and how you prioritized them
Instrumentation/probes you added (temporary metrics, logs, traces, feature flags)
Specific logs/metrics/traces you used and what they showed
Any reproduction steps in lower environments
How you isolated the root cause

Fix and verification

Code/config/data changes
Tests added (unit, integration, e2e, chaos/fault injection)
Release strategy (feature flag, canary, rollback plan)
Monitoring and success criteria used to verify the fix

Trade-offs and alternatives

What you chose and why; what you deliberately deferred

What you'd do differently next time

Process/architecture/observability improvements you would make

Feedback and growth

How you incorporated feedback from peers/stakeholders and how it helped you operate at the next level

Describe Past Project And Debugging Approach

Behavioral + Technical Leadership: End-to-End Project and Production Bug

Solution (Locked)

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