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Growth · Software Engineer Interview Guide

How to Pass the InPost Software Engineer Interview in 2026

The InPost DNA (TL;DR)

InPost values candidates demonstrating strong problem-solving skills, customer-centricity, and a keen understanding of logistics efficiency. They seek individuals who can innovate within their parcel locker network, optimize operations, and contribute to a tech-driven delivery experience.

The InPost 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 InPost interview outcomes, avoid these common traps:

  • Describing a situation where they were simply assigned a task.
  • Claiming to learn something without specific examples or evidence.
  • Using brute-force comparisons for every reading instead of a sliding window or statistical approach.
  • Not clearly defining their specific role and actions.

Test Yourself: Real InPost Questions

Three real prompts pulled from our database.

Type · Past Experience

Tell me about a time you had to influence a team or stakeholder without direct authority. What was the situation, what steps did you take, and what was the outcome?

Type · System Design

Design a system to manage locker availability and predict optimal parcel routing for delivery drivers. Consider factors like locker fullness, traffic, and delivery time windows.

Type · ownership

Tell me about a time you took ownership of a marketing project or initiative that was failing or at risk. What did you do, and what was the outcome?

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InPost Interview Question Bank

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

10 of 22 questions shown

1

Recruiter Screen

2
  1. 1

    Type · Motivation

    What interests you about working at InPost, specifically within the logistics and parcel locker industry?
  2. 2

    Type · Logistics Domain

    Describe your understanding of the key challenges in last-mile delivery and how technology can address them.
2

Coding Screen

3
  1. 3

    Type · Algorithmic

    Given a list of parcel drop-off and pick-up times for various lockers, write a function to find the maximum number of parcels that can be simultaneously present in a single locker, considering its capacity.
  2. 4

    Type · Algorithmic

    You have a stream of locker sensor readings (e.g., temperature, door status). Design an algorithm to detect anomalies (e.g., a door left open for too long, unusual temperature fluctuations) in real-time.
  3. + 1 more questions in this round (sign up to unlock)
3

System Design

3
  1. 5

    Type · System Design

    Design a system to manage locker availability and predict optimal parcel routing for delivery drivers. Consider factors like locker fullness, traffic, and delivery time windows.
  2. 6

    Type · System Design

    Design the backend system for a mobile app that allows users to track their parcels, find nearby lockers, and manage returns. How would you handle potential load spikes during peak seasons?
  3. + 1 more questions in this round (sign up to unlock)
4

Onsite Coding

4
  1. 7

    Type · Algorithmic

    Given a map of the city with locker locations and estimated travel times between them, find the shortest path for a delivery route that visits a specific set of lockers and returns to the depot. Optimize for time.
  2. 8

    Type · Debugging

    A user reports that their parcel is marked as 'delivered' in the app, but they never received it. The logs show the locker status changed to 'occupied' at the reported time. Debug this issue. What are the potential causes and how would you investigate?
  3. + 2 more questions in this round (sign up to unlock)
5

Behavioral / Leadership

10
  1. 9

    Type · Past Experience

    Tell me about a time you had to influence a team or stakeholder without direct authority. What was the situation, what steps did you take, and what was the outcome?
  2. 10

    Type · Conflict Resolution

    Tell me about a time you had a technical disagreement with a colleague or manager. How did you approach it, and what was the outcome?
  3. + 8 more questions in this round (sign up to unlock)

Unlock the full InPost question bank

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Interview tracks at InPost

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

SWEs are evaluated on strong coding skills, system design for scalable logistics platforms, and experience with distributed systems. Focus is on building robust backend services for locker management, tracking, and mobile applications to ensure reliable parcel delivery.

Past Experience

Tell me about a time you had to influence a team or stakeholder without direct authority. What was the situation, what steps did you take, and what was the outcome?

System Design

Design a system to manage locker availability and predict optimal parcel routing for delivery drivers. Consider factors like locker fullness, traffic, and delivery time windows.

+ 1 more

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Compare InPost with other tech interviews

Same DNA, different bar. Browse the closest companies in our database and see how their loops differ.

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