This interview process is for a Senior Software Engineer (Software Engineer III) position at Canonical. It is designed to assess a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit within the company. The process typically involves multiple rounds, including technical assessments, behavioral interviews, and a final managerial discussion.
Rounds·4
Timeline·~14d
Experience·5 - 10 yrs
Comp band·US$130000 - US$180000
Interview time·210 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: Data Structures & Algorithms, OS Fundamentals.
Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language and analyze their time and space complexity. Review fundamental operating system concepts like processes, threads, memory management, and concurrency.
Phase 02 of 04
Weeks 3-4: System Design Principles & Case Studies.
Weeks 3-4: Dive into system design. Study concepts like scalability, availability, reliability, consistency, load balancing, caching, databases (SQL vs. NoSQL), message queues, and API design. Work through common system design case studies.
Phase 03 of 04
Week 5: Behavioral Questions (STAR method), Company Values.
Week 5: Prepare for behavioral questions by reflecting on your past experiences using the STAR method (Situation, Task, Action, Result). Focus on examples that demonstrate leadership, teamwork, problem-solving, and handling challenges. Research Canonical's values and prepare to align your answers with them.
Phase 04 of 04
Week 6: Role-Specific Technologies, Mock Interviews.
Week 6: Review specific technologies relevant to the role (e.g., Linux internals, cloud platforms, specific programming languages like C++, Python, Go). If the role involves specific Canonical products (e.g., Ubuntu, LXD, Juju), familiarize yourself with them. Practice coding challenges and mock interviews.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Technical Coding Interview · 60 min · Software Engineer / Senior Software Engineer
This round focuses on assessing your core programming skills and problem-solving abilities. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will evaluate your approach to problem-solving, your ability to write clean and efficient code, and your understanding of time and space complexity. You'll likely be expected to code in a shared editor or whiteboard.
What they look for
Evaluation
Sample questions
Given an array of integers, find the contiguous subarray with the largest sum.
Implement a function to reverse a linked list.
Find the kth smallest element in a binary search tree.
Given two strings, determine if one is an anagram of the other.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Software Engineer / Engineering Manager
This round evaluates your ability to design and architect software systems. You'll be presented with a high-level problem (e.g., design Twitter's feed, design a URL shortener) and expected to break it down, discuss requirements, propose a solution, and justify your design choices. Focus on scalability, availability, reliability, and performance.
What they look for
Evaluation
Sample questions
Design a system like TinyURL.
Design a news feed system for a social media platform.
How would you design a distributed key-value store?
Design an API for a ride-sharing service.
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · HR Representative / Hiring Manager
This round focuses on your behavioral competencies and cultural fit. You'll be asked questions about your past experiences, how you handle specific situations (e.g., conflict resolution, dealing with failure, teamwork), and your motivations. Use the STAR method (Situation, Task, Action, Result) to structure your answers and provide concrete examples.
What they look for
Evaluation
Sample questions
Tell me about a time you had to work with a difficult colleague. How did you handle it?
Describe a project where you took initiative or went above and beyond.
How do you handle constructive criticism?
Why are you interested in Canonical and this specific role?
Prep for this round
Common rejection reasons
Managerial Interview · 45 min · Hiring Manager
This final round is typically with the hiring manager. It's an opportunity to discuss your career goals, understand the team's dynamics and projects in more detail, and ensure alignment between your expectations and what the role offers. The manager will assess your overall fit with the team and your potential for growth within Canonical.
What they look for
Evaluation
Sample questions
What are your long-term career goals, and how does this role fit into them?
What are your expectations from a manager and a team?
How do you prioritize your work when faced with multiple competing tasks?
What are your thoughts on the challenges facing the tech industry today?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Canonical loops
Other guides
