Lam Research

Role: Software Engineer

College: Not Specified

Interview Date: Not Specified (based on 2025 question list)

Interview Type: Full-Time

Result: Not Specified

Difficulty: Medium to Hard

Rounds: 2-4 rounds (typical for freshers, potentially more for experienced roles)

Topics Asked: Data Structures (LRU Cache), Algorithms, System Design (news feed), Computer Architecture (RISC vs CISC), Hardware Description Languages (Verilog delays), Semiconductor Device Physics (FinFET vs MOSFET), behavioral questions.

Experience:

The interview process for a Software Engineer at Lam Research generally involves multiple rounds, typically ranging from two to four. These rounds often include technical interviews that assess coding skills and system design capabilities. Candidates might encounter questions such as designing and coding an LRU (Least Recently Used) cache policy in C++. Discussions could also delve into computer architecture, requiring candidates to define and contrast RISC and CISC architectures. For roles with a hardware or embedded systems component, questions on implementing delays in Verilog might be posed. Additionally, understanding of semiconductor device physics could be tested with questions like defining a FinFET and comparing it to a standard MOSFET. System design problems, such as designing an algorithm-driven news feed system similar to Facebook's, are also a possibility. Beyond technical skills, behavioral questions are common, exploring how candidates handle constructive but difficult feedback or how they would introduce a major product update to a long-time customer. Candidates are encouraged to demonstrate a problem-solving mindset and an interest in the semiconductor industry.