How long does the Ericsson interview process take?

Most candidates spend between 4 and 8 weeks from recruiter screen to offer. The onsite loop itself runs in a single day or is split across two half-days, with debrief and offer typically within 5 business days after.

How should I prepare specifically for Ericsson?

Focus on three things: (1) the company DNA shown above — what they actually grade for, (2) the rounds in your loop, especially the round most candidates underestimate, and (3) drilling on the question types in this guide using a structured framework like CIRCLES or STAR.

Does this apply to engineering or design roles at Ericsson?

The DNA stays the same — what changes is the round mix. SWE candidates face coding screens instead of Product Sense; designers face portfolio reviews and design exercises. The "what they value" and behavioral signals carry across all functions.

Implement a function to find the k-th most frequent element in a list of network device IDs. The list can be very large.

Type: Algorithm. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Design a system to monitor the real-time Quality of Service (QoS) for millions of mobile network users. The system should collect metrics like latency, jitter, and packet loss, and provide dashboards for network operators.

Type: System Design. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Design a distributed cache for storing network configuration data that needs to be accessed frequently by thousands of network elements. The cache should be consistent and highly available.

Type: System Design. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Implement a function to simulate the behavior of a simplified cellular network handover. Given a list of cell towers with their locations and signal strengths at various points, determine the optimal tower for a mobile device to connect to as it moves along a predefined path. Handle cases where signal strengths are equal.

Type: Algorithm. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

A network monitoring tool is reporting intermittent connection failures between two servers, but logs show no explicit errors. The tool uses a heartbeat mechanism. Debug this issue. Here's a snippet of the heartbeat logic.

Type: Debugging. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Tell me about a time you had to take ownership of a complex technical problem that wasn't strictly within your job description. What was the situation, what did you do, and what was the outcome?

Type: Ownership. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Tell me about a time you faced a significant conflict with a colleague or stakeholder. How did you handle the situation, and what did you learn from it?

Type: Conflict Resolution. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Other roles at Ericsson:Software Engineer Sales Solutions Architect

Enterprise · Software Engineer Interview Guide

How to Pass the Ericsson Software Engineer Interview in 2026

The Ericsson DNA (TL;DR)

Ericsson values deep technical expertise in telecom, collaborative problem-solving, and a commitment to quality and innovation in large-scale systems. They assess cultural fit for a global, established organization focused on long-term impact.

English original + your local-language translation

Tech and global multinational interviews are most often conducted in English. For industries like luxury, finance, or pharma, the working language may be local. We show every question in English first — alongside your local-language translation — so you can prep in whichever language your interviewer ends up using.

The Ericsson Interview Loop

Your onsite loop will typically consist of 5 rounds.

1
Round 1
Recruiter Screen
Motivation, role fit, logistics.
2
Round 2
Coding Screen
LeetCode-medium algorithmic problems under time pressure.
3
Round 3
System Design
Distributed systems, trade-offs at scale, architecture under constraints.
4
Round 4
Onsite Coding
LeetCode-hard, debugging, code clarity, edge cases.
5
Round 5
Behavioral / Leadership
Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

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

Not addressing cache invalidation strategies, leading to stale data.
Not handling edge cases like empty streams or zero-sized packets.
Ignoring fault tolerance and scalability requirements.
Incorrectly applying the filtering range during or after the merge.

Test Yourself: Real Ericsson Questions

Three real prompts pulled from our database.

Type · Algorithm

Given a stream of network traffic data (represented as tuples of (timestamp, source_ip, destination_ip, packet_size)), write a function to detect and report IP addresses that exceed a certain traffic volume threshold within a sliding time window. Assume timestamps are monotonically increasing.

Type · Motivation

Why are you interested in a Software Engineer role at Ericsson, specifically within the telecom industry?

Type · Behavioral

Describe a complex technical problem you encountered in a past project. Walk me through your process for diagnosing and solving it, and what you learned from the experience.

+ many more questions, signals, and worked examples

Unlock the rubric →

Ericsson Interview Question Bank

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

9 of 18 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in a Software Engineer role at Ericsson, specifically within the telecom industry?

Coding Screen

2
Type · Algorithm
Given a stream of network traffic data (represented as tuples of (timestamp, source_ip, destination_ip, packet_size)), write a function to detect and report IP addresses that exceed a certain traffic volume threshold within a sliding time window. Assume timestamps are monotonically increasing.
3
Type · Algorithm
Implement a function to find the k-th most frequent element in a list of network device IDs. The list can be very large.
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · System Design
Design a system to monitor the real-time Quality of Service (QoS) for millions of mobile network users. The system should collect metrics like latency, jitter, and packet loss, and provide dashboards for network operators.
5
Type · System Design
Design a distributed cache for storing network configuration data that needs to be accessed frequently by thousands of network elements. The cache should be consistent and highly available.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Algorithm
Implement a function to simulate the behavior of a simplified cellular network handover. Given a list of cell towers with their locations and signal strengths at various points, determine the optimal tower for a mobile device to connect to as it moves along a predefined path. Handle cases where signal strengths are equal.
7
Type · Debugging
A network monitoring tool is reporting intermittent connection failures between two servers, but logs show no explicit errors. The tool uses a heartbeat mechanism. Debug this issue. Here's a snippet of the heartbeat logic.
+ 1 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Ownership
Tell me about a time you had to take ownership of a complex technical problem that wasn't strictly within your job description. What was the situation, what did you do, and what was the outcome?
9
Type · Conflict Resolution
Tell me about a time you faced a significant conflict with a colleague or stakeholder. How did you handle the situation, and what did you learn from it?
+ 6 more questions in this round (sign up to unlock)

Unlock the full Ericsson question bank

Free signup, no credit card. You get every question + the framework, grading signals, and worked answer for each.

Unlock all questions →

Interview tracks at Ericsson

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

SWE roles at Ericsson focus on C/C++ for embedded systems, networking protocols (5G, IoT), and distributed systems for telecom infrastructure. Expect questions on data structures, algorithms, system design for high-availability, and real-time performance.

Algorithm

Motivation

Why are you interested in a Software Engineer role at Ericsson, specifically within the telecom industry?

+ 1 more

Unlock the Software Engineer grading rubric for Ericsson

See full Software Engineer guide