What changes would you make if you came on board?
Tests humility, strategic observation, and avoiding reckless premature disruption.
Why Interviewers Ask This (Recruiter Psychology)
Recruiters check for arrogance. A candidate who says "I will immediately rewrite your architecture from scratch" is a walking liability. They want engineers who listen, observe, understand context, and then suggest data-backed improvements.
Winning Answer Formula: Listen-Learn-Measure-Iterate (30-60-90 Day)
Respect the historical context of the existing codebase. Code looks strange only until you understand the constraints under which it was built.
Curated Model Answers
"As a newcomer, I wouldn't rush to make sweeping changes on day one. Existing architectures and practices were built for valid business reasons by talented engineers. In my first month, my priority would be to listen, understand the codebase, review existing documentation, and learn your workflows. Once I am fully ramped up, I would look for small, collaborative ways to add value—such as improving documentation, augmenting unit test coverage, or streamlining local developer environment setup."
"I follow a strict 'listen and diagnose first' philosophy. In the first 30 days, I focus on understanding your architectural history, operational pain points, and product roadmaps through 1-on-1s with engineers and stakeholders. Only after mapping the system would I propose data-backed improvements—such as eliminating deployment bottlenecks, addressing high-impact technical debt, or optimizing latency. Any change must be incremental, measurable, and driven by team consensus."
Alternative Candidate Perspectives
"Every piece of legacy code that looks ugly today was once someone's emergency heroics to save the company on a Friday evening. Respect the history before rewriting."
💡 Key Takeaway: Respecting engineering legacy is the mark of true seniority.
"I wouldn't make sweeping changes in the beginning. First, I want to understand your rules, workflows, customer expectations, and where friction actually exists. Any improvement I propose will be collaborative, backed by data, and reviewed with leadership."
💡 Key Takeaway: Refusing to jump to hasty conclusions respects current team members and builds trust.
"My focus would be on streamlining developer workflows to reduce unnecessary bottlenecks and stress. When engineers have clear requirements and frictionless CI/CD pipelines, code quality and morale naturally soar."
💡 Key Takeaway: Targeting friction reduction and tooling support is universally appreciated.
✓ What to Do (Best Practices)
- Emphasize listening, learning, and understanding business context first.
- Propose incremental, data-backed optimizations (testing, CI/CD, documentation).
- Show that you value team consensus over unilateral declarations.
✗ What NOT to Say (Red Flags)
- Never say "I will rewrite your whole backend in my favorite language."
- Don’t insult the current engineers or their existing implementation.
🎯 Probable Follow-Up Questions from HR
Frequently Asked Questions
How should an experienced engineering leader answer this question?
Use the 30-60-90 day framework: First 30 days listening and mapping system health; next 30 days identifying quick wins with the team; final 30 days executing measurable architectural improvements.