How long does the Cisco 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 Cisco?

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 Cisco?

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.

Why are you interested in a Software Engineer role at Cisco, specifically within our Enterprise Networking division?

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

Given a list of network device configurations (represented as strings), write a function to find all devices that have a specific configuration parameter set to a given value. For example, find all devices where 'VLAN' is set to '10'. Assume configurations can be complex and nested.

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

You are given a stream of network traffic data, where each data point includes a source IP, destination IP, and timestamp. Design an algorithm to detect potential denial-of-service (DoS) attacks by identifying IP addresses that are sending an unusually high number of requests to a specific destination within a short time window.

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

Design a system for real-time network traffic monitoring and anomaly detection for a large enterprise network. Consider how to collect data from thousands of devices, process it efficiently, and alert administrators to potential security threats or performance issues.

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

Design a distributed configuration management system for Cisco routers and switches. How would you ensure consistency across thousands of devices, handle rollbacks, and allow for automated deployment of configuration changes?

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

You are given a function that simulates packet loss in a network. The function is supposed to return the number of packets successfully delivered, but it has a bug. Debug and fix the function. Assume the function takes the total number of packets sent and a probability of loss for each packet.

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

Implement a Least Recently Used (LRU) cache suitable for caching network device states or configurations. The cache should support `get(key)` and `put(key, value)` operations, evicting the least recently used item when the cache is full.

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

Tell me about a time you took ownership of a problem or project that was outside your defined responsibilities. What was the situation, and what was the outcome?

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

Other roles at Cisco:Product Manager Software Engineer Sales Solutions Architect Customer Success

Enterprise · Software Engineer Interview Guide

How to Pass the Cisco Software Engineer Interview in 2026

The Cisco DNA (TL;DR)

Cisco values candidates with strong technical fundamentals, problem-solving abilities, and a collaborative mindset. They assess for cultural fit, a passion for innovation in networking/security, and the ability to contribute to complex, enterprise-grade solutions.

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 Cisco 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 Cisco interview outcomes, avoid these common traps:

Focusing only on salary or title without mentioning technical interest or company mission.
Not clearly articulating their specific actions and contributions.
Describing an unresolved conflict or a situation where they simply gave in.
Not handling different hardware/software versions and compatibility issues.

Test Yourself: Real Cisco Questions

Three real prompts pulled from our database.

Type · Algorithmic

Implement a function that takes a Cisco IOS-like command string (e.g., 'interface GigabitEthernet0/1', 'ip address 192.168.1.1 255.255.255.0') and parses it into a structured representation (e.g., a dictionary or object) that identifies the command and its arguments.

Type · Influence

Describe a situation where you had to influence a stakeholder (internal or external) who was resistant to your recommendation. How did you approach it?

Type · Conflict Resolution

Tell me about a time you had a significant disagreement with a colleague or manager. How did you approach the situation, and what was the resolution?

+ many more questions, signals, and worked examples

Unlock the rubric →

Cisco Interview Question Bank

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

9 of 22 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in a Software Engineer role at Cisco, specifically within our Enterprise Networking division?

Coding Screen

2
Type · Algorithmic
Given a list of network device configurations (represented as strings), write a function to find all devices that have a specific configuration parameter set to a given value. For example, find all devices where 'VLAN' is set to '10'. Assume configurations can be complex and nested.
3
Type · Algorithmic
You are given a stream of network traffic data, where each data point includes a source IP, destination IP, and timestamp. Design an algorithm to detect potential denial-of-service (DoS) attacks by identifying IP addresses that are sending an unusually high number of requests to a specific destination within a short time window.
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · System Design
Design a system for real-time network traffic monitoring and anomaly detection for a large enterprise network. Consider how to collect data from thousands of devices, process it efficiently, and alert administrators to potential security threats or performance issues.
5
Type · System Design
Design a distributed configuration management system for Cisco routers and switches. How would you ensure consistency across thousands of devices, handle rollbacks, and allow for automated deployment of configuration changes?
+ 2 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Algorithmic/Debugging
You are given a function that simulates packet loss in a network. The function is supposed to return the number of packets successfully delivered, but it has a bug. Debug and fix the function. Assume the function takes the total number of packets sent and a probability of loss for each packet.
7
Type · Algorithmic
Implement a Least Recently Used (LRU) cache suitable for caching network device states or configurations. The cache should support `get(key)` and `put(key, value)` operations, evicting the least recently used item when the cache is full.
+ 2 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Conflict Resolution
Tell me about a time you had a significant disagreement with a colleague or manager. How did you approach the situation, and what was the resolution?
9
Type · Ownership
Tell me about a time you took ownership of a problem or project that was outside your defined responsibilities. What was the situation, and what was the outcome?
+ 8 more questions in this round (sign up to unlock)

Unlock the full Cisco 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 Cisco

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

SWEs face rigorous technical challenges in data structures, algorithms, and system design, often related to networking, security, or cloud platforms. They look for strong coding skills in C/C++, Python, or Java, and an ability to build scalable, reliable enterprise software.

Algorithmic

Influence

Describe a situation where you had to influence a stakeholder (internal or external) who was resistant to your recommendation. How did you approach it?

+ 1 more

Unlock the Software Engineer grading rubric for Cisco

See full Software Engineer guide