Black Rock

Role: Associate (C++ Developer)

College: Not Specified

Interview Date: Not Specified (Process took about 3 weeks)

Interview Type: Full-Time

Result: Selected

Difficulty: Medium

Rounds: 3 rounds (Initial Discussion + 2 Technical + 1 Behavioral)

Topics Asked: Modern C++ (move semantics, smart pointers, polymorphism), Low-Level Design (Cache system, LRU/LFU), Data Structures & Algorithms (Daily Temperatures), Behavioral, Motivation for BlackRock

Experience:

A recruiter from BlackRock reached out regarding a C++ Developer role. The entire interview process took about 3 weeks.

Round 1: Initial Discussion (Recruiter Call)

• Initial discussion with the recruiter.

Round 2: Technical Interview

• Technical Discussion: The interviewer delved into modern C++ concepts, focusing on topics such as move semantics, smart pointers, and polymorphism, requiring detailed explanation and understanding.
• Low-Level Design: Asked to design a cache system. Discussion involved different cache eviction policies like LRU (Least Recently Used) and LFU (Least Frequently Used) and their implementation.
• DSA Problem: Towards the end (last 15 minutes), asked to solve LeetCode problem 739. Daily Temperatures. The candidate implemented the solution and discussed time and space complexity.

Round 3: Behavioral

• Scenario-based questions.
• Questions about motivations for applying to BlackRock.