Otter.Ai interview questions

Showing 1–12 of 12 results

• Defend a Data Pipeline Architecture and Its Trade-offsMedium

  Prepare to defend a production data pipeline you genuinely built or changed. The prompt tests how you connect requirements to architecture, compare alternatives, explain replay and backfills, diagnose a hard failure, quantify outcomes, and reflect on ownership and trade-offs.

  Otter.AiData EngineerSystem DesignTechnical Screen
• Design a Fault-Tolerant Meeting Bot Allocation SystemMedium

  Design the infrastructure between a web UI and a bot pool. Connect requirements and APIs to data modeling, consistency, scaling, failure recovery, observability, and the important design trade-offs.

  Otter.AiSoftware EngineerSystem DesignOnsite
• Design a Google Docs-Style Real-Time Collaborative Editing BackendMedium

  Design the backend of a Google Docs-style editor in which many users edit the same document in real time and every copy converges to the same text. Tests concurrency control for simultaneous edits, routing of document sessions, operation storage and revision history, presence, and recovery from disconnects and server failures.

  Otter.AiSoftware EngineerSystem DesignOnsite
• Evaluate Arithmetic ExpressionsMedium

  This problem tests your ability to parse and evaluate a string representing a mathematical expression with basic operator precedence, typically requiring a stack-based approach or a recursive descent parser.

  Otter.AiSoftware EngineerCoding & AlgorithmsTechnical Screen
• Extend a Key-Value Store with Commits and Explicit Rollover SemanticsEasy

  Design a versioned key-value store supporting staging, atomic commits, point-in-time snapshot reads, and automated rollover compaction.

  Otter.AiSoftware EngineerSystem DesignTechnical Screen
• Fewest Adjacent-GCD Operations to Turn Every Array Element into 1Medium

  Given an array of positive integers, find the fewest operations that make every element 1, where each operation replaces one of two neighboring values with their greatest common divisor, or return -1 if it cannot be done. Tests GCD properties, lower-bound reasoning and careful case analysis on small arrays.

  Otter.AiSoftware EngineerCoding & AlgorithmsOnsite
• Find Every Project with the Most EmployeesMedium

  Build a PostgreSQL aggregation that returns every project tied for the largest employee count. This compact exercise checks grouping, maximum selection, tie preservation, empty-input behavior, and careful use of primary-key guarantees.

  Otter.AiData EngineerData Manipulation (SQL/Python)Technical Screen
• Find the Highest-Paid Employee in Each DepartmentMedium

  Work through a tie-aware PostgreSQL problem that finds every highest-paid employee in each department. It assesses relational reasoning, correct joins, duplicate-name handling, and precise output semantics without assuming a single winner.

  Otter.AiData EngineerData Manipulation (SQL/Python)Technical Screen
• Fixed-Width Text DisplayMedium

  This question tests a candidate's ability to implement greedy line-packing and space-distribution algorithms, core string manipulation skills evaluated in software engineering interviews. It assesses practical application of text layout logic, including handling edge cases like single-word lines and justified formatting with uneven space distribution.

  Otter.AiSoftware EngineerCoding & AlgorithmsTechnical Screen
• Implement an Arithmetic Expression EvaluatorMedium

  This problem tests your ability to parse and evaluate mathematical expressions containing non-negative integers, addition, subtraction, multiplication, and nested parentheses using a stack-based approach or recursion.

  Otter.AiSoftware EngineerCoding & AlgorithmsTechnical Screen
• In-Memory Key-Value Store with Nested TransactionsMedium

  This problem tests the ability to implement a nested transactional key-value store using stack-based state management and scope shadowing.

  Otter.AiSoftware EngineerCoding & AlgorithmsTechnical Screen
• Validate Password Against Multiple RulesEasy

  This problem tests your ability to efficiently iterate through a string while maintaining multiple state-based flags to satisfy diverse validation criteria.

  Otter.AiSoftware EngineerCoding & AlgorithmsTechnical Screen