MQMarshall Qiao

Interview lab

Prepare from first principles.

My working notebook for senior engineering interviews: behavioural stories, architecture trade-offs, and repeatable coding patterns.

  1. 2 min readBehavioural

    Behavioral Stories That Actually Show Seniority

    A STAR answer is stronger when it reveals judgment, scope, trade-offs, and what changed afterward.

  2. 2 min readSystem Design

    System Design Drill: A High-Throughput Rule Engine

    How to structure requirements, data flow, scaling, correctness, and operations in a 45-minute system design interview.

  3. 1 min readAlgorithms

    Learn Algorithm Patterns, Not a Thousand Problems

    A retrieval-first method for turning LeetCode practice into reusable interview decisions.