# Senior Engineer **Role:** Software Engineer · **Level:** P50 **Company:** [Atlassian](https://scaleengineer.com/companies/atlassian) **Difficulty:** Hard **Salary:** US$140000 - US$180000 **Experience:** 5 - 10 **Timeline:** ~14 days This interview process is designed to assess candidates for a Senior Software Engineer (P50) role at Atlassian. It evaluates technical expertise, problem-solving abilities, system design skills, and cultural fit, ensuring candidates can contribute effectively to complex projects and mentor junior engineers. Canonical: https://scaleengineer.com/interviews/atlassian/p50-software-engineer --- ## Overall evaluation - Technical Proficiency - Problem Solving - System Design - Leadership & Mentorship - Communication & Collaboration - Cultural Fit ## Questions asked - Describe a complex technical problem you solved. - How would you design a system for [specific Atlassian product feature]? - Tell me about a time you had to lead a technical project. - What are your strengths and weaknesses as an engineer? - How do you handle disagreements within a team? - Explain the concept of eventual consistency. - What are the trade-offs between SQL and NoSQL databases? - How do you ensure the scalability of a web application? - Describe your experience with cloud platforms (AWS, Azure, GCP). - How do you approach code reviews? - Tell me about a time you failed and what you learned from it. - What are your thoughts on microservices vs. monoliths? - How do you stay updated with new technologies? ## Preparation tips ### lists - Thoroughly review your resume and be prepared to discuss all projects and experiences in detail. - Practice coding problems focusing on data structures, algorithms, and object-oriented design. - Study system design principles, including scalability, reliability, and distributed systems. - Understand Atlassian's products and their use cases. - Prepare behavioral questions using the STAR method (Situation, Task, Action, Result). - Research Atlassian's company culture and values. - Prepare thoughtful questions to ask the interviewers. ### studyPlan - {"title":"Data Structures and Algorithms","longDescription":"Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice coding these concepts in your preferred language. Review Big O notation for time and space complexity.","shortDescription":"Weeks 1-2: Data Structures & Algorithms. Practice coding and complexity analysis."} - {"title":"System Design","longDescription":"Weeks 3-4: Dive into system design principles. Study topics like API design, database choices (SQL vs. NoSQL), caching strategies, load balancing, message queues, and microservices architecture. Consider common design patterns and trade-offs.","shortDescription":"Weeks 3-4: System Design. Focus on scalability, reliability, and distributed systems."} - {"title":"Behavioral and Situational Questions","longDescription":"Week 5: Prepare for behavioral and situational questions. Reflect on your past experiences related to teamwork, leadership, conflict resolution, and problem-solving. Use the STAR method to structure your answers.","shortDescription":"Week 5: Behavioral Questions. Prepare STAR method answers for leadership and teamwork."} - {"title":"Company and Role Research","longDescription":"Week 6: Research Atlassian's products (Jira, Confluence, Bitbucket), company culture, and values. Understand their business model and recent news. Prepare specific questions about the role and the company.","shortDescription":"Week 6: Company Research & Questions. Understand Atlassian's products, culture, and prepare questions."} ## Location differences - {"location":"Sydney","differences":{"tips":["Familiarize yourself with Atlassian's core products (Jira, Confluence, Bitbucket) and their underlying architectures.","Be prepared to discuss your experience with AWS/Azure/GCP in detail.","Highlight instances where you've led technical initiatives or mentored other engineers.","Research common challenges in distributed systems and how Atlassian addresses them."],"interviewFocus":["Deep dive into distributed systems and cloud architecture.","Emphasis on leadership and technical mentorship.","Understanding of specific Atlassian product challenges and solutions.","Experience with large-scale data processing and analytics."],"commonQuestions":["Describe a complex technical challenge you faced and how you overcame it.","How do you approach designing a scalable and reliable system for [specific Atlassian product context, e.g., Jira issue tracking]?","Tell me about a time you had to influence a team's technical direction.","What are your thoughts on the latest trends in cloud-native development and microservices?","How do you ensure code quality and maintainability in a large codebase?"]}} - {"location":"San Francisco","differences":{"tips":["Showcase your understanding of front-end frameworks and back-end technologies relevant to Atlassian's stack.","Be ready to discuss your contributions to open-source projects or significant personal projects.","Emphasize your ability to work effectively in cross-functional teams.","Prepare examples of how you've improved system performance or user experience."],"interviewFocus":["Focus on front-end and back-end integration, user experience.","Experience with agile methodologies and CI/CD pipelines.","Problem-solving in a fast-paced, collaborative environment.","Understanding of data structures and algorithms for performance."],"commonQuestions":["How would you design a real-time collaboration feature for a product like Confluence?","Discuss your experience with performance optimization in high-traffic applications.","Tell me about a time you disagreed with a technical decision and how you handled it.","What are your strategies for debugging complex issues in a distributed environment?","How do you stay updated with new technologies and programming paradigms?"]}} - {"location":"Austin","differences":{"tips":["Be prepared to discuss your experience with cloud platforms like AWS, Azure, or GCP.","Highlight your contributions to improving system architecture and performance.","Showcase your ability to mentor and guide other engineers.","Research Atlassian's approach to security and compliance."],"interviewFocus":["Emphasis on system design, scalability, and reliability.","Experience with cloud infrastructure and DevOps practices.","Leadership qualities and ability to influence technical decisions.","Understanding of security principles and implementation."],"commonQuestions":["Describe a situation where you had to make a significant technical trade-off.","How do you approach designing for fault tolerance and disaster recovery?","Tell me about a time you mentored a junior engineer and helped them grow.","What are your thoughts on the evolution of microservices and serverless architectures?","How do you ensure security best practices are followed in your code?"]}} ## Round 1: Data Structures and Algorithms **Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min Assess core coding skills with data structures and algorithms problems. This round focuses on your core programming skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your problem-solving approach and communication skills. **Interviewers look for:** Strong grasp of fundamental data structures and algorithms.; Ability to translate a problem into working code.; Clear communication of the approach.; Attention to detail and edge case handling. **Evaluation criteria:** Correctness of the solution.; Efficiency of the solution (time and space complexity).; Code clarity and readability.; Ability to explain the thought process.; Handling of edge cases and error conditions. **Common rejection reasons:** Inability to articulate thought process clearly.; Lack of fundamental understanding of data structures and algorithms.; Poor coding practices (e.g., no error handling, inefficient solutions).; Difficulty in solving even basic algorithmic problems. ## 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. ## Preparation tips - Practice coding problems on platforms like LeetCode, HackerRank, or Coderbyte. - Focus on understanding the underlying data structures and algorithms. - Practice explaining your thought process out loud as you code. - Be prepared to discuss time and space complexity. ## Round 2: System Design and Architecture **Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min Assess system design and architectural skills for complex problems. This round evaluates your ability to design and architect software systems. You'll be presented with a high-level problem and asked to design a solution, considering aspects like scalability, reliability, performance, and maintainability. Expect to discuss various components, data models, APIs, and potential trade-offs. **Interviewers look for:** Ability to design complex systems from scratch.; Understanding of distributed systems principles.; Pragmatic approach to problem-solving.; Ability to justify design choices.; Consideration of various system components (databases, caching, APIs, etc.). **Evaluation criteria:** Scalability of the proposed design.; Reliability and fault tolerance.; Clarity and completeness of the design.; Understanding of trade-offs (e.g., consistency vs. availability).; Knowledge of relevant technologies and patterns. **Common rejection reasons:** Inability to design a scalable and robust system.; Lack of consideration for trade-offs and constraints.; Poor understanding of distributed systems concepts.; Failure to address potential failure points or bottlenecks. ## Questions - Design a URL shortening service like bit.ly. - Design a system to handle real-time notifications for a social media platform. - Design a distributed key-value store. - How would you design a system to process and analyze large volumes of user activity data? ## Preparation tips - Study common system design patterns (e.g., microservices, event-driven architecture). - Understand concepts like load balancing, caching, database sharding, and replication. - Practice designing systems for common applications (e.g., social media feed, URL shortener, chat application). - Be prepared to draw diagrams and explain your design choices clearly. ## Round 3: Behavioral and Cultural Fit **Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min Assess soft skills, teamwork, and cultural fit through behavioral questions. This round focuses on your behavioral and situational responses. The interviewer will ask questions about your past experiences to understand how you handle various work scenarios, including teamwork, leadership, conflict resolution, and dealing with ambiguity. The goal is to assess your soft skills and cultural fit. **Interviewers look for:** How you handle challenges and conflicts.; Your ability to work with others.; Your motivation and passion for technology.; Your alignment with Atlassian's culture.; Your potential to grow within the company. **Evaluation criteria:** Communication skills.; Teamwork and collaboration.; Problem-solving approach.; Leadership potential.; Cultural fit with Atlassian's values.; Self-awareness and ability to learn from mistakes. **Common rejection reasons:** Lack of clear communication or inability to articulate thoughts.; Negative attitude or poor collaboration skills.; Inability to provide specific examples for behavioral questions.; Lack of alignment with company values.; Arrogance or unwillingness to learn. ## Questions - Tell me about a time you had a conflict with a colleague and how you resolved it. - Describe a project where you took initiative or demonstrated leadership. - How do you handle constructive criticism? - What motivates you in your work? - Tell me about a time you failed. What did you learn? ## Preparation tips - Prepare examples using the STAR method (Situation, Task, Action, Result) for common behavioral questions. - Reflect on your strengths, weaknesses, and career goals. - Be ready to discuss why you are interested in Atlassian and this specific role. - Show enthusiasm and a positive attitude. ## Round 4: Hiring Manager Discussion **Type:** Managerial / Hiring Manager Interview · **Difficulty:** Hard · **Duration:** 45 min Final discussion with the hiring manager about career goals, leadership, and team fit. This final round is typically with the hiring manager or a senior leader. It's a chance to discuss your career aspirations, leadership style, and how you envision contributing to Atlassian at a senior level. They will assess your overall fit, leadership potential, and strategic thinking. **Interviewers look for:** Senior-level judgment and decision-making.; Ability to mentor and elevate the team.; Proactive problem-solving and ownership.; Alignment with the team's goals and Atlassian's mission.; Passion for building great products. **Evaluation criteria:** Technical leadership and mentorship capabilities.; Strategic thinking and impact on the team/product.; Ability to influence and drive technical decisions.; Collaboration and communication with peers and stakeholders.; Overall fit with the team and company culture. **Common rejection reasons:** Lack of alignment with the team's technical direction.; Inability to demonstrate senior-level thinking or impact.; Poor communication or interpersonal skills.; Lack of enthusiasm or engagement.; Unrealistic salary expectations not aligned with the role. ## Questions - What are your long-term career goals, and how does this role fit into them? - How would you mentor a junior engineer who is struggling with a particular technology? - Describe a time you had to influence a team to adopt a new technology or approach. - What do you think are the biggest challenges facing our team/product, and how would you address them? - What are your salary expectations? ## Preparation tips - Be prepared to discuss your career goals and how this role aligns with them. - Think about how you can contribute to the team's success and mentor junior engineers. - Showcase your understanding of the impact you can make. - Ask insightful questions about the team's roadmap, challenges, and culture.