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      Java Backend Engineer Interview

      16 Mar 2026
      Anonymous employee
      Sunnyvale, CA
      Accepted offer
      Neutral experience
      Average interview

      Application

      I applied through a staffing agency. I interviewed at Walmart (Sunnyvale, CA) in Feb 2025

      Interview

      HR Phone Screen Interview An initial phone call with an HR recruiter to discuss your background, work experience, and interest in the role. The recruiter will also cover logistical details such as compensation expectations, location preferences, visa/sponsorship status, and timeline availability before deciding whether to move you forward in the process. Online Assessment – 2 Coding Problems (80 minutes) A timed technical assessment administered through an online platform, consisting of two algorithmic coding problems to be completed within 80 minutes. The problems typically focus on data structures and algorithms such as arrays, hashmaps, trees, or dynamic programming, and are evaluated on both correctness and code efficiency (time and space complexity). Virtual Onsite Interview – Java Concepts & Coding A comprehensive virtual interview conducted over video call, covering core Java concepts such as object-oriented programming, collections, concurrency, memory management, and design patterns. In addition to conceptual questions, candidates are expected to solve coding problems in real time, demonstrating clean code structure, problem-solving approach, and the ability to explain and optimize their solutions under interview conditions.

      Interview questions [1]

      Question 1

      what is stream api? How do you use it?
      Answer question