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Growth · Software Engineer Interview Guide

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Interview language: English

How to Pass the Nabla Software Engineer Interview in 2026

The Nabla DNA (TL;DR)

The 'Nabla Restoring' principle guides their hiring, seeking individuals who can simplify complex clinical workflows. They assess how candidates propose solutions that genuinely enhance the user experience for healthcare providers, often referencing the efficiency gains seen with Nabla Dictation.

The Nabla 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 Nabla interview outcomes, avoid these common traps:

  • Describing a situation where they didn't actively try to resolve the conflict.
  • Focusing only on the negative outcome without learning.
  • Designing a synchronous API that would block for long-running operations.
  • Focusing only on the negative aspects of the conflict.

Test Yourself: Real Nabla Questions

Three real prompts pulled from our database.

Type · String Manipulation

Write a function to parse a simplified electronic health record (EHR) string, extracting key information like patient name, date of birth, and primary diagnosis. The format is 'PatientName: [Name]; DOB: [YYYY-MM-DD]; Diagnosis: [Diagnosis]'.

Type · Algorithmic

Given a list of drug interactions, where each interaction is represented as a pair of drug names, and a list of drugs a patient is taking, determine if any of the patient's drugs have a known interaction. Assume drug names are unique strings.

Type · Ownership

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

+ many more questions, signals, and worked examples

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Nabla Interview Question Bank

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

9 of 19 questions shown

1

Recruiter Screen

1
  1. 1

    Type · Motivation

    Why are you interested in working at Nabla, specifically within the pharmaceutical industry?
2

Coding Screen

3
  1. 2

    Type · Algorithmic

    Given a list of patient visit records, each with a timestamp and a doctor ID, write a function to find all doctors who had more than K visits within any 1-hour window.
  2. 3

    Type · Data Structures

    Implement a data structure that can efficiently store and retrieve patient data, supporting operations like adding a new patient, updating patient information, and searching for patients by name or patient ID. Assume patient IDs are unique integers.
  3. + 1 more questions in this round (sign up to unlock)
3

System Design

3
  1. 4

    Type · API Design

    Design an API for a system that allows doctors to remotely monitor patient vital signs (e.g., heart rate, blood pressure) from wearable devices. Consider data ingestion, real-time updates, and security.
  2. 5

    Type · Database Design

    Design a database schema to store electronic health records (EHRs). Consider tables for patients, doctors, appointments, medical history, and prescriptions. Think about relationships, indexing, and potential performance bottlenecks.
  3. + 1 more questions in this round (sign up to unlock)
4

Onsite Coding

3
  1. 6

    Type · Algorithmic

    Given a list of drug interactions, where each interaction is represented as a pair of drug names, and a list of drugs a patient is taking, determine if any of the patient's drugs have a known interaction. Assume drug names are unique strings.
  2. 7

    Type · Debugging

    A feature that calculates the dosage of a medication based on patient weight and a standard dosage formula is producing incorrect results for a small subset of patients. The code involves floating-point arithmetic and conditional logic. Debug this issue.
  3. + 1 more questions in this round (sign up to unlock)
5

Behavioral / Leadership

9
  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, sales). How did you approach the situation and what was the outcome?
  2. 9

    Type · Ownership

    Tell me about a time you took ownership of a problem or project that wasn't explicitly assigned to you. What was the situation, and what was the outcome?
  3. + 7 more questions in this round (sign up to unlock)

Unlock all 19 Nabla questions, free

No credit card. Every question with its framework, the grading signals interviewers score against, and a worked answer for each.

Unlock all 19 Nabla questions

Interview tracks at Nabla

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

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Practice Nabla interviews end-to-end

Nabla Mock Interview

Run a live mock interview with our AI interviewer using Nabla-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.

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STAR Stories for Nabla Behavioral Rounds

Build a Story Bank of your past wins, mapped to the leadership signals Nabla interviewers grade on. Reuse them across every behavioral round.

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Nabla Interview Prep Hub

The frameworks behind every Nabla round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.

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Interview Frameworks

CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make Nabla interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.

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Sample answers

What a strong answer to these Nabla interview questions shows.

Write a function to parse a simplified electronic health record (EHR) string, extracting key information like patient name, date of birth, and primary diagnosis. The format is 'PatientName: [Name]; DOB: [YYYY-MM-DD]; Diagnosis: [Diagnosis]'.

A strong answer shows: Robust parsing that handles variations.; Data validation.; Clear and concise code..

Given a list of drug interactions, where each interaction is represented as a pair of drug names, and a list of drugs a patient is taking, determine if any of the patient's drugs have a known interaction. Assume drug names are unique strings.

A strong answer shows: Efficient use of hash sets for lookups.; Handling potential data inconsistencies (e.g., case sensitivity).; Clear logic for checking interactions..

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