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Growth · Οδηγός συνέντευξης Software Engineer

Πώς να περάσετε τη συνέντευξη Software Engineer της Helsing το 2026

Το DNA της Helsing (TL;DR)

Helsing values candidates who demonstrate exceptional problem-solving skills, adaptability in ambiguous, high-stakes environments, and a strong alignment with their mission in defense AI. They seek individuals who are proactive, impact-driven, and can navigate complex technical and ethical challenges.

Οι συνεντεύξεις tech διεξάγονται στα αγγλικά

Ακόμη κι όταν κάνετε αίτηση τοπικά, η ίδια η συνέντευξη γίνεται σχεδόν πάντα στα αγγλικά. Σας δείχνουμε κάθε ερώτηση και prompt πρώτα στα αγγλικά — τη γλώσσα στην οποία θα γίνει η συνέντευξη — με μετάφραση από κάτω για να προετοιμαστείτε στην ισχυρότερη γλώσσα σας.

Το Interview Loop της Helsing

Το onsite loop σας θα αποτελείται τυπικά από 5 γύρους.

  1. 1

    Γύρος 1

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

    Γύρος 2

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

    Γύρος 3

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

    Γύρος 4

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

    Γύρος 5

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

Η ζώνη κινδύνου: Κορυφαίοι λόγοι που οι υποψήφιοι αποτυγχάνουν

Με βάση τη βάση δεδομένων μας με αποτελέσματα συνεντεύξεων Helsing, αποφύγετε αυτές τις συνηθισμένες παγίδες:

  • Reading the entire file into memory, causing potential OOM errors.
  • Not investigating potential resource leaks or external dependencies (e.g., database connection pools, network timeouts).
  • Giving a generic answer about wanting to work in AI without specific connection to Helsing's mission.
  • Inefficiently recalculating the sum of severities for each window.

Δοκιμάστε τον εαυτό σας: Πραγματικές ερωτήσεις Helsing

Τρία πραγματικά prompts τραβηγμένα από τη βάση δεδομένων μας.

Τύπος · Motivation

What interests you about Helsing's mission to use AI for a safer world, and how do you see your software engineering skills contributing to that goal?

Τύπος · Algorithm

Given a stream of sensor data representing object proximity, design an algorithm to detect and report when two objects are within a critical distance for more than 5 seconds, optimizing for low latency and memory usage.

Τύπος · Ownership

Describe a time you took ownership of a complex technical problem or project that extended beyond your immediate responsibilities. What motivated you, and what was the impact?

+ πολλές ακόμη ερωτήσεις, σήματα και επεξεργασμένα παραδείγματα

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Helsing Interview Question Bank

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

9 of 18 questions shown

1

Recruiter Screen

1
  1. 1

    Τύπος · Motivation

    What interests you about Helsing's mission to use AI for a safer world, and how do you see your software engineering skills contributing to that goal?
2

Coding Screen

3
  1. 2

    Τύπος · Algorithm

    Given a stream of sensor data representing object proximity, design an algorithm to detect and report when two objects are within a critical distance for more than 5 seconds, optimizing for low latency and memory usage.
  2. 3

    Τύπος · Data Structures

    Implement a function that takes a list of geographic coordinates and returns the K nearest neighbors for a given point, considering the Earth's curvature. Optimize for performance when querying a large dataset.
  3. + 1 more questions in this round (sign up to unlock)
3

System Design

3
  1. 4

    Τύπος · API Design

    Design a scalable API for Helsing's real-time threat intelligence platform. Consider how to handle high-volume data ingestion, efficient querying by multiple clients (e.g., dashboards, automated systems), and authentication/authorization.
  2. 5

    Τύπος · Data Storage

    Helsing needs to store and query vast amounts of time-series sensor data and associated metadata (e.g., device ID, location, event type). Propose a data storage solution that balances query performance, storage cost, and data retention policies.
  3. + 1 more questions in this round (sign up to unlock)
4

Onsite Coding

3
  1. 6

    Τύπος · Algorithm

    You are given a large log file where each line represents a detected anomaly with a timestamp and a severity level. Write a function to find the time window (start and end timestamp) with the highest cumulative severity, given a fixed window size `W`. Optimize for reading the file only once if possible.
  2. 7

    Τύπος · Debugging

    A critical service responsible for aggregating threat data is intermittently failing. Logs show occasional `ResourceExhaustedError` exceptions, but monitoring doesn't indicate high CPU or memory usage. Debug this issue.
  3. + 1 more questions in this round (sign up to unlock)
5

Behavioral / Leadership

8
  1. 8

    Τύπος · Conflict Resolution

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

    Τύπος · Collaboration

    Tell me about a time you had a significant technical disagreement with a colleague or team lead. How did you approach the situation, and what was the outcome?
  3. + 6 more questions in this round (sign up to unlock)

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Interview tracks at Helsing

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

SWEs should showcase deep expertise in AI/ML, distributed systems, or security, building robust, reliable, and secure software. Collaboration in cross-functional teams and a focus on practical, mission-critical application of AI in defense contexts are paramount.

Motivation

What interests you about Helsing's mission to use AI for a safer world, and how do you see your software engineering skills contributing to that goal?

Algorithm

Given a stream of sensor data representing object proximity, design an algorithm to detect and report when two objects are within a critical distance for more than 5 seconds, optimizing for low latency and memory usage.

+ 1 more

Unlock the Software Engineer grading rubric for Helsing

See full Software Engineer guide

Compare Helsing with similar employers

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

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