Recently asked questions

Optimize rendering for a large virtualized list

Explain reconciliation, memoization, and when to use virtualization libraries.

Tip: Mention profiling first — avoid premature optimization.

Design a rate limiter for API gateway

Discuss token bucket vs sliding window. Cover distributed consistency and failure modes.

Tip: Lead with requirements, then trade-offs, then a concrete AWS-flavored example.

Test strategy for microservices checkout

Contract tests, e2e scope, and observability for failure injection.

SQL window functions for cohort retention

Write query for monthly cohort retention and interpret results.

Automate flaky UI tests in CI

Describe retry strategy, test isolation, and reporting for pipeline stability.

Tip: Talk about root-cause categories: timing, data, environment.

Build a cart service with inventory holds

Implement reserve/release inventory with concurrency-safe updates.

Design YouTube-like video upload pipeline

Upload, transcoding queue, CDN, and metadata store at scale.

Tell me about a time you improved QA process

STAR format expected. Focus on metrics and stakeholder alignment.

Tip: Quantify impact: defect escape rate, cycle time, coverage.

Explain indexing strategy for high-write tables

B-tree vs hash, covering indexes, and write amplification trade-offs.

Tip: Use a concrete schema example with EXPLAIN output.

Why product management at Accenture?

Culture fit, client work, and how you handle ambiguity in consulting.