SEED Senior Software Engineer interview at Dapplon Technologies Pvt Ltd

Very hard · neutral · no offer · Posted 13 days ago

recruiter screen · 30 mincoding · 60 minsystem design · 75 minculture · 45 min

SEED: Bar was very high. Failed the system-design round. Interviewers were kind but the rubric is steep.

Practice 2-3 high-scale system designs (URL shortener, news feed, Uber). Speak through trade-offs out loud.

system design

Design the news-feed backend for 1B users.

Fan-out vs fan-in, hot-shard problem, cache invalidation.

coding

Implement a thread-safe LRU cache.

HashMap + DoublyLinkedList; lock or use ConcurrentSkipListMap.