# Grade 8 **Role:** Software Engineer · **Level:** Software Engineer III **Company:** [Cisco](https://scaleengineer.com/companies/cisco) **Difficulty:** Medium to Hard **Salary:** US$140000 - US$180000 **Experience:** 5 - 8 **Timeline:** ~14 days This interview process is for a Software Engineer III (Grade 8) position at Cisco. It is designed to assess a candidate's technical skills, problem-solving abilities, and cultural fit within the company. Canonical: https://scaleengineer.com/interviews/cisco/software-engineer-iii-software-engineer --- ## Overall evaluation - Technical Skills - System Design - Communication - Behavioral Aspects ## Questions asked - Design a URL shortening service. - Implement a function to find the k-th largest element in an unsorted array. - Explain the difference between TCP and UDP. - Tell me about a time you disagreed with a team member. - How would you design a system to handle real-time notifications for millions of users? - What are the advantages of using a message queue? - Describe a situation where you had to debug a complex issue in production. - How do you stay updated with new technologies? - Write a function to reverse a linked list. - What is polymorphism and how is it implemented in your preferred language? ## Preparation tips ### lists - Review core computer science concepts: Data Structures, Algorithms, Operating Systems, Networking. - Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty. - Study system design principles and common patterns (caching, load balancing, databases, messaging queues). - Prepare to discuss your past projects in detail, focusing on your contributions and technical challenges. - Understand Cisco's products, services, and company culture. - Practice behavioral questions using the STAR method (Situation, Task, Action, Result). ### studyPlan - {"title":"Data Structures and Algorithms","longDescription":"Weeks 1-2: Focus on Data Structures (Arrays, Linked Lists, Trees, Graphs, Hash Tables) and Algorithms (Sorting, Searching, Dynamic Programming, Greedy Algorithms). Practice implementing these in your preferred language and analyze their time and space complexity.","shortDescription":"Weeks 1-2: DSA Fundamentals & Practice"} - {"title":"System Design","longDescription":"Weeks 3-4: Dive into System Design. Study concepts like scalability, availability, consistency, load balancing, caching strategies, database design (SQL vs. NoSQL), and microservices architecture. Review common system design interview questions and practice designing systems.","shortDescription":"Weeks 3-4: System Design Principles & Practice"} - {"title":"Behavioral Preparation","longDescription":"Week 5: Prepare for behavioral questions. Reflect on your past experiences and identify examples that showcase your problem-solving skills, teamwork, leadership, and adaptability. Practice articulating these using the STAR method.","shortDescription":"Week 5: Behavioral Preparation (STAR Method)"} - {"title":"Mock Interviews","longDescription":"Week 6: Mock interviews. Conduct mock interviews with peers or mentors to simulate the actual interview environment. Get feedback on your technical explanations, coding, and behavioral responses. Review any weak areas identified.","shortDescription":"Week 6: Mock Interviews & Review"} ## Location differences - {"location":"San Jose, USA","differences":{"tips":["Be prepared to discuss your experience with cloud platforms (AWS, Azure, GCP).","Familiarize yourself with common distributed system patterns.","Practice explaining complex technical concepts clearly and concisely.","Highlight projects where you had significant impact on performance or scalability."],"interviewFocus":["System Design and Scalability","Distributed Systems Concepts","Problem-Solving and Algorithmic Thinking","Experience with large-scale production environments"],"commonQuestions":["How would you design a distributed caching system?","Explain the CAP theorem and its implications.","Describe a challenging technical problem you solved and how you approached it.","What are your thoughts on microservices vs. monolithic architectures?","How do you ensure code quality and maintainability in a large project?"]}} - {"location":"Bangalore, India","differences":{"tips":["Brush up on fundamental computer science concepts.","Be ready to write code on a whiteboard or shared editor.","Prepare examples that demonstrate your problem-solving skills.","Showcase your ability to collaborate effectively."],"interviewFocus":["Core Programming Skills","Data Structures and Algorithms","Software Development Lifecycle","Teamwork and Communication"],"commonQuestions":["Discuss your experience with Java/Python/C++ and object-oriented principles.","How would you optimize a database query?","Describe your approach to testing and debugging.","What are the trade-offs between different data structures?","Tell me about a time you had to work with a difficult stakeholder."]}} ## Round 1: Data Structures and Algorithms **Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min Coding challenge focused on DSA. This round focuses on assessing your core programming skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will evaluate 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 DSA; Clean and efficient coding practices; Logical thinking and problem-solving approach; Ability to communicate technical ideas clearly **Evaluation criteria:** Correctness of the solution; Efficiency of the solution (time and space complexity); Code quality and readability; Ability to handle edge cases; Communication of approach **Common rejection reasons:** Inability to write clean, efficient, or correct code.; Poor understanding of fundamental data structures and algorithms.; Difficulty in explaining thought process.; Not addressing edge cases or constraints. ## Questions - Given a binary tree, find its inorder traversal. - Implement a function to find the median of a stream of numbers. - Write a function to check if a string is a palindrome. ## Preparation tips - Practice coding on a whiteboard or a simple text editor. - Think out loud and explain your approach before coding. - Test your code with various inputs, including edge cases. - Be prepared to discuss time and space complexity. ## Round 2: System Design and Architecture **Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min Design a scalable system. This round evaluates your ability to design and architect scalable, reliable, and maintainable software systems. You will be presented with a high-level problem and asked to design a system to solve it. This includes discussing components, data flow, APIs, databases, caching, and potential bottlenecks. **Interviewers look for:** Ability to design complex systems; Knowledge of distributed systems principles; Experience with large-scale applications; Pragmatic approach to problem-solving **Evaluation criteria:** Scalability of the design; Reliability and fault tolerance; Trade-off analysis; Understanding of system components; Clarity and completeness of the design **Common rejection reasons:** Lack of understanding of distributed systems concepts.; Inability to design scalable and reliable systems.; Poor trade-off analysis.; Not considering failure scenarios.; Not asking clarifying questions. ## Questions - Design a system like Google Maps. - Design a rate limiter. - How would you design a distributed cache? ## Preparation tips - Study common system design patterns and architectures. - Practice designing systems like Twitter feed, URL shortener, or a distributed cache. - Be prepared to discuss trade-offs and justify your design choices. - Ask clarifying questions to understand the requirements and constraints. ## Round 3: Behavioral and Managerial **Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min Assessing cultural fit and past experiences. This round focuses on your behavioral and cultural fit within Cisco. You will be asked questions about your past experiences, how you handle challenges, work in teams, and your career aspirations. The goal is to understand your working style, motivation, and how you align with Cisco's values. **Interviewers look for:** Alignment with Cisco's values (e.g., integrity, collaboration, innovation).; Ability to work effectively in a team.; Self-awareness and reflection.; Passion for technology and continuous learning. **Evaluation criteria:** Cultural fit; Teamwork and collaboration; Problem-solving approach; Communication skills; Motivation and career goals **Common rejection reasons:** Lack of alignment with Cisco's values.; Poor communication or interpersonal skills.; Inability to provide specific examples for behavioral questions.; Lack of enthusiasm or interest in the role/company.; Negative attitude or blaming others. ## Questions - Tell me about a time you failed and what you learned from it. - Describe a situation where you had to work with a difficult colleague. - Why are you interested in working at Cisco? ## Preparation tips - Prepare examples using the STAR method for common behavioral questions. - Research Cisco's values and culture. - Be honest and authentic in your responses. - Ask thoughtful questions about the team and work environment.