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Growth · Software Engineer Interview Guide

Applies via Greenhouse

How to Pass the Oura Software Engineer Interview in 2026

The Oura DNA (TL;DR)

Oura values candidates who demonstrate a strong understanding of health tech, data-driven decision making, and a passion for improving user well-being through innovative products like the Oura Ring. They seek individuals who can contribute to a fast-paced, collaborative environment focused on growth and user impact.

The Oura Interview Loop

Your onsite loop will typically consist of 5 rounds.

  1. 1

    Round 1

    Recruiter Screen
    Motivation, role fit, logistics.
  2. 2

    Round 2

    Coding Screen
    LeetCode-medium algorithmic problems under time pressure.
  3. 3

    Round 3

    System Design
    Distributed systems, trade-offs at scale, architecture under constraints.
  4. 4

    Round 4

    Onsite Coding
    LeetCode-hard, debugging, code clarity, edge cases.
  5. 5

    Round 5

    Behavioral / Leadership
    Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

Based on our database of Oura interview outcomes, avoid these common traps:

  • Blaming the other party without acknowledging their perspective.
  • Focusing only on the negative outcome without learning or resolution.
  • Focusing only on personal career goals without connecting them to Oura's impact.
  • Failing to handle edge cases like an empty stream or N=0.

Test Yourself: Real Oura Questions

Three real prompts pulled from our database.

Type · Data Structures

Given a stream of heart rate data points, design a data structure to efficiently calculate the average heart rate over the last N minutes. Assume N is variable.

Type · Motivation

What interests you about Oura's mission and how do you see your skills contributing to our goal of empowering people to understand their bodies?

Type · Ownership

Tell me about a time you took initiative to solve a problem that wasn't explicitly part of your job description. What was the situation, and what was the outcome?

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Oura Interview Question Bank

A sample from our database, grouped by round. Sign up to see the full set.

9 of 20 questions shown

1

Recruiter Screen

1
  1. 1

    Type · Motivation

    What interests you about Oura's mission and how do you see your skills contributing to our goal of empowering people to understand their bodies?
2

Coding Screen

3
  1. 2

    Type · Data Structures

    Given a stream of heart rate data points, design a data structure to efficiently calculate the average heart rate over the last N minutes. Assume N is variable.
  2. 3

    Type · Algorithms

    Oura tracks sleep stages. Given a sequence of sleep stage labels (e.g., REM, Deep, Light, Awake) and their start times, write a function to calculate the total duration spent in each stage.
  3. + 1 more questions in this round (sign up to unlock)
3

System Design

3
  1. 4

    Type · API Design

    Design an API for Oura users to retrieve their historical sleep data. Consider different time ranges, data granularity (daily, weekly, monthly summaries), and potential pagination for large datasets.
  2. 5

    Type · Data Processing Pipeline

    Outline a system to process raw sensor data from Oura rings, calculate sleep stages, and store the results for user access. Discuss trade-offs between real-time processing and batch processing.
  3. + 1 more questions in this round (sign up to unlock)
4

Onsite Coding

3
  1. 6

    Type · Debugging

    A user reports that their nightly sleep score is sometimes significantly lower than expected, despite them feeling well-rested. The backend logs show their REM sleep duration is being calculated as zero for several nights. How would you approach debugging this issue?
  2. 7

    Type · Algorithm - Hard

    Implement a function that takes a user's daily activity data (e.g., steps, active minutes) and sleep data (e.g., sleep duration, time in bed) and predicts a 'readiness' score from 0-100. You can define the factors and their weighting, but the logic should be defensible.
  3. + 1 more questions in this round (sign up to unlock)
5

Behavioral / Leadership

10
  1. 8

    Type · Conflict Resolution

    Tell me about a time you had a significant disagreement with a cross-functional team member (e.g., engineer, designer, marketer). How did you approach the situation and what was the outcome?
  2. 9

    Type · Ownership

    Tell me about a time you took initiative to solve a problem that wasn't explicitly part of your job description. What was the situation, and what was the outcome?
  3. + 8 more questions in this round (sign up to unlock)

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Interview tracks at Oura

How Oura's DNA translates across functions. Pick your role.

SWEs should demonstrate expertise in scalable systems for health data, mobile development (iOS/Android for the Oura app), and embedded systems for the ring itself. Expect technical challenges related to data processing, privacy, and real-time sensor integration.

Data Structures

Given a stream of heart rate data points, design a data structure to efficiently calculate the average heart rate over the last N minutes. Assume N is variable.

Motivation

What interests you about Oura's mission and how do you see your skills contributing to our goal of empowering people to understand their bodies?

+ 1 more

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Compare Oura with similar employers

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