Katkat

Company

Zipline interview questions

4 practice questions in the style of Zipline's interviews, covering Software Engineering Fundamentals, System Design, Coding & Algorithms.

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Zipline interview questions by the numbers

Last updated

Katkat has 4 Zipline interview questions. The largest topics are Software Engineering Fundamentals (50%), Coding & Algorithms (25%) and System Design (25%). By difficulty: 100% medium. The most common round is Onsite (50%).

Topics

Difficulty

  • Medium100% · 4

Interview rounds

  • Onsite50% · 2
  • Technical Screen50% · 2

Roles

  • Software Engineer100% · 4

Showing 1–4 of 4 results

  • Design a Checkers Game SimulatorMedium

    This question evaluates object-oriented design skills, state modeling, rule-based algorithm development for move validation and game-state transitions, API specification, and robust error and edge-case handling.

    ZiplineSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
  • Design a Redundant Railroad CrossingMedium

    This question evaluates competency in safety-critical system design, covering requirements analysis, redundancy and fault-tolerance, sensor and actuator integration, real-time control logic, and monitoring and maintenance considerations.

    ZiplineSoftware EngineerSystem DesignOnsite
  • Implement a Maximum-Tracking StackMedium

    This question evaluates competency in data structure design and algorithmic analysis, focusing on stack operations augmented with maximum-tracking and correctness when multiple maximal elements and ordering constraints are present.

    ZiplineSoftware EngineerCoding & AlgorithmsTechnical Screen
  • Optimize Autonomy Mapping ComponentsMedium

    This question evaluates a candidate's skills in embedded perception and state-estimation, covering design of data structures and update algorithms for a 2.5D elevation grid with uncertainty as well as conceptual review of a causal one-dimensional smoothing filter.

    ZiplineSoftware EngineerSoftware Engineering FundamentalsOnsite

Zipline interview experiences

All 9 →
  • Zipline Software Engineer interview: project discussions and an onsite panelZipline · Software Engineer · Technical Screen · Jul 2026

    My first step after applying was a short Talent Acquisition screen about my background and current work schedule. Later, I spoke with a team member in a technical session. We stayed close to my resume, discussing the thinking behind my projects and working through a technical question. The broader sequence moved from the recruiter to technical and behavioral conversations, then a scenario-based r…

  • Zipline Software Engineer interview: large take-home and five onsite roundsZipline · Software Engineer · Take-home Project · Jun 2026

    My process lasted more than three months and felt like I was constantly being passed around. I spoke with two different hiring managers, and the work they assigned was substantial: a very large take-home assignment that I put real effort into and delivered a strong solution for. During a later take-home review, I was told the work looked great and wasn’t something they saw often. Then came the on…

  • Zipline Software Engineer interview with an industry-expert recruiterZipline · Software Engineer · May 2026
    Rejected

    A recruiter reached out to me on LinkedIn and quickly talked up her background. She described herself as an industry expert and implied that she could "sniff out" whether I really knew what I was talking about. That framing threw me off before I had a chance to explain my experience. I didn’t want to feel put on the defensive, especially since I had already done significant work and expected a mo…

  • Zipline Software Engineer onsite cut short by a video setupZipline · Software Engineer · Onsite · May 2026
    Rejected

    My early screens went well, including an initial check with the hiring manager and a coding portion. I was then invited onsite for the final rounds, and that's when the process started to feel badly mismanaged. When I arrived, the interviewers were working from home, so I had to join by video while sitting in a congested, makeshift phone setup. That made the whole experience feel pointless. Durin…

  • Zipline Software Engineer interview: seven-round onsite after take-homeZipline · Software Engineer · Technical Screen · Apr 2026

    The process started with a technical interview with a senior team member and quickly moved into a comprehensive take-home assessment. I felt good after passing that stage, and then I was invited to an intensive onsite at the South San Francisco office. The onsite was the heavy part, with seven distinct rounds covering technical and behavioral topics. The structure showed that they were evaluating…

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