# Software Engineer **Role:** Software Engineer · **Level:** L2 **Company:** [Zeta](https://scaleengineer.com/companies/zeta) **Difficulty:** Medium **Salary:** US$90000 - US$120000 **Experience:** 2 - 5 **Timeline:** ~7 days This interview process is for a Software Engineer (L2) role at Zeta. It is designed to assess a candidate's technical skills, problem-solving abilities, and cultural fit within the company. Canonical: https://scaleengineer.com/interviews/zeta/l2-software-engineer --- ## Overall evaluation - Technical Skills - System Design & Architecture - Behavioral & Cultural Fit - Problem Comprehension & Communication ## Questions asked - Write a function to reverse a linked list. - Given an array of integers, find the two numbers that add up to a specific target. - Design a URL shortening service. - How would you design a system like Twitter's feed? - Tell me about a time you faced a conflict with a teammate and how you resolved it. - Describe a challenging technical problem you solved and your approach. - What are your strengths and weaknesses? - Why are you interested in Zeta? ## Preparation tips ### lists - Review fundamental data structures and algorithms. - Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert. - Study common system design patterns and principles. - Prepare examples for behavioral questions using the STAR method (Situation, Task, Action, Result). - Research Zeta's products, services, and company culture. - Understand the specific technologies mentioned in the job description. - Practice explaining your thought process clearly and concisely. ### studyPlan - {"title":"Data Structures and Algorithms","longDescription":"Weeks 1-2: Focus on core data structures (Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hash Tables) and algorithms (Sorting, Searching, Dynamic Programming, Greedy Algorithms). Practice problems related to these topics.","shortDescription":"Weeks 1-2: Data Structures & Algorithms fundamentals. Practice problems."} - {"title":"System Design","longDescription":"Week 3: Dive into system design concepts. Cover topics like scalability, load balancing, database design (SQL vs. NoSQL), caching, and API design. Study common design patterns.","shortDescription":"Week 3: System Design basics. Scalability, databases, caching."} - {"title":"Behavioral Preparation & Company Research","longDescription":"Week 4: Prepare for behavioral questions. Reflect on past projects and experiences, focusing on teamwork, problem-solving, and leadership. Use the STAR method to structure your answers. Research Zeta's values and mission.","shortDescription":"Week 4: Behavioral preparation. STAR method. Zeta research."} ## Location differences - {"location":"India (Bangalore, Hyderabad)","differences":{"tips":["Research common tech stacks used by companies in Bangalore.","Be prepared to discuss your experience with Agile methodologies in a distributed team setting.","Highlight any experience with local regulations or compliance if applicable."],"interviewFocus":["Adaptability to local market trends and client needs.","Collaboration with distributed teams across India.","Understanding of specific technologies prevalent in the Indian tech landscape."],"commonQuestions":["Tell me about a challenging project you worked on in Bangalore.","How do you handle tight deadlines in a fast-paced environment like Hyderabad?","Describe your experience with cloud technologies relevant to our India operations."]}} - {"location":"USA (San Francisco, New York)","differences":{"tips":["Showcase your contributions to significant projects or open-source initiatives.","Be ready to discuss system design principles for scalability and performance.","Demonstrate awareness of emerging technologies and their potential impact."],"interviewFocus":["Innovation and contribution to cutting-edge technologies.","Experience with large-scale, high-availability systems.","Understanding of US market dynamics and competitive landscape."],"commonQuestions":["How have you contributed to open-source projects relevant to the US market?","Describe your experience with scalable systems designed for a global user base.","What are your thoughts on the current AI/ML trends impacting the US tech industry?"]}} ## Round 1: Data Structures and Algorithms Round **Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min Coding challenge focusing on data structures and algorithms. This round focuses on assessing your core programming skills. You will be asked to solve 1-2 coding problems, typically involving data structures and algorithms. The interviewer will evaluate your approach, the efficiency of your solution, and the clarity of your code. Expect to explain your thought process throughout the problem-solving session. **Interviewers look for:** Strong grasp of fundamental data structures and algorithms.; Ability to translate a problem into a working code solution.; Clear explanation of the thought process.; Consideration of edge cases and constraints. **Evaluation criteria:** Correctness of the solution; Efficiency of the solution (Time and Space Complexity); Code readability and maintainability; Problem-solving approach and thought process **Common rejection reasons:** Inability to solve basic algorithmic problems.; Poor understanding of time and space complexity.; Messy or inefficient code.; Lack of clear communication during problem-solving. ## Questions - Given a binary tree, find its inorder traversal. - Implement a function to find the kth smallest element in an unsorted array. ## Preparation tips - Practice coding problems on platforms like LeetCode (Easy/Medium difficulty). - Be comfortable explaining your code and analyzing its time and space complexity. - Practice thinking out loud while solving problems. ## Round 2: System Design Round **Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min Design a scalable system, discussing trade-offs and components. In this round, you will be presented with a system design problem. You'll need to design a scalable and reliable system, such as a social media feed, a URL shortener, or a distributed cache. The focus is on your ability to break down the problem, identify key components, discuss trade-offs, and justify your design decisions. **Interviewers look for:** Ability to design complex systems from scratch.; Knowledge of distributed systems principles.; Sound reasoning for design choices.; Consideration of various constraints and requirements. **Evaluation criteria:** Scalability of the design; Reliability and fault tolerance; Trade-off analysis; Clarity and completeness of the design; Understanding of database and caching strategies **Common rejection reasons:** Inability to design scalable and robust systems.; Lack of understanding of distributed systems concepts.; Poor trade-off analysis.; Not considering failure scenarios or edge cases. ## Questions - Design a rate limiter. - Design a system to count unique visitors to a website. ## Preparation tips - Study common system design patterns (e.g., microservices, load balancing, caching). - Practice designing systems like Twitter, Facebook News Feed, or Dropbox. - Understand database choices (SQL vs. NoSQL) and their implications. - Be prepared to discuss API design and communication protocols. ## Round 3: Behavioral and Cultural Fit Round **Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min Assesses soft skills, teamwork, and cultural fit through past experiences. This round focuses on your behavioral aspects and how you fit into the team and company culture. You'll be asked questions about your past experiences, how you handle specific situations (e.g., conflict, failure, success), and your motivations. The interviewer wants to understand your soft skills and how you collaborate with others. **Interviewers look for:** Evidence of teamwork and collaboration.; Ability to handle challenges and learn from mistakes.; Positive attitude and enthusiasm.; Alignment with Zeta's culture and values.; Clear and concise communication. **Evaluation criteria:** Communication clarity; Teamwork and collaboration skills; Problem-solving approach in past experiences; Adaptability and learning agility; Alignment with company values **Common rejection reasons:** Poor communication skills.; Lack of self-awareness.; Inability to provide specific examples.; Negative attitude or lack of enthusiasm.; Poor cultural fit with the team or company values. ## Questions - Tell me about a time you had to work with a difficult colleague. - Describe a project where you failed and what you learned from it. - How do you stay updated with new technologies? ## Preparation tips - Prepare specific examples using the STAR method for common behavioral questions. - Reflect on your strengths, weaknesses, and career goals. - Research Zeta's company culture, values, and mission. - Be ready to ask thoughtful questions about the role and the team.