# Software Engineer **Role:** Software Engineer · **Level:** Software Engineer 1 **Company:** [Zenefits](https://scaleengineer.com/companies/zenefits) **Difficulty:** Medium **Salary:** US$90000 - US$120000 **Experience:** 0 - 2 **Timeline:** ~7 days Zenefits is looking for a Software Engineer 1 to join our growing team. This role is responsible for designing, developing, and maintaining software applications, collaborating with cross-functional teams, and contributing to the overall success of our products. Canonical: https://scaleengineer.com/interviews/zenefits/software-engineer-1-software-engineer --- ## Overall evaluation - Technical Skills - Communication Skills - Behavioral Attributes ## 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. - Explain the difference between a process and a thread. - Describe a situation where you had to deal with a difficult stakeholder. - How would you design a URL shortening service? - What are your strengths and weaknesses? - Why are you interested in Zenefits? ## Preparation tips ### lists - Review fundamental data structures and algorithms. - Practice coding problems on platforms like LeetCode or HackerRank. - Understand object-oriented programming principles. - Familiarize yourself with common software design patterns. - Research Zenefits' products and company culture. - Prepare to discuss your past projects and experiences in detail. - Practice answering behavioral questions using the STAR method. ### studyPlan - {"title":"Data Structures and Algorithms","longDescription":"Week 1: Focus on core data structures (arrays, linked lists, stacks, queues, trees, graphs) and basic algorithms (sorting, searching). Practice implementing these in your preferred language. Understand time and space complexity (Big O notation).","shortDescription":"Week 1: Data Structures & Algorithms fundamentals. Big O notation."} - {"title":"Advanced Algorithms and System Design","longDescription":"Week 2: Dive into more advanced algorithms like dynamic programming, greedy algorithms, and graph traversal. Work on medium-difficulty coding problems that utilize these concepts. Start exploring system design basics if time permits.","shortDescription":"Week 2: Advanced Algorithms & System Design basics."} - {"title":"Behavioral and Company Research","longDescription":"Week 3: Focus on behavioral questions. Prepare stories using the STAR method for common scenarios like teamwork, problem-solving, handling failure, and leadership. Research Zenefits' mission, values, and recent news. Practice explaining your resume projects.","shortDescription":"Week 3: Behavioral preparation and company research."} ## Location differences - {"location":"Remote","differences":{"tips":["Highlight projects where you demonstrated quick learning and adaptability.","Be prepared to discuss how you collaborate with team members.","Emphasize your ability to thrive in a dynamic work environment."],"interviewFocus":["Adaptability to new technologies","Problem-solving skills in a fast-paced environment","Teamwork and communication"],"commonQuestions":["Tell me about a challenging project you worked on.","How do you handle conflicting priorities?","Describe a time you had to learn a new technology quickly."]}} - {"location":"San Francisco","differences":{"tips":["Brush up on your knowledge of Ruby on Rails and React.","Be ready to walk through your debugging process.","Showcase your understanding of writing clean, maintainable code."],"interviewFocus":["Technical proficiency in relevant languages and frameworks","Understanding of software development lifecycle","Attention to detail in code quality"],"commonQuestions":["Describe your experience with our core technologies (e.g., Ruby on Rails, React).","How do you approach debugging complex issues?","What are your thoughts on code reviews and best practices?"]}} ## Round 1: HR Screening **Type:** Recruiter Screen · **Difficulty:** Easy · **Duration:** 30 min Initial screening call with HR to assess basic qualifications and fit. This initial screening call with a recruiter is designed to understand your background, career goals, and motivation for applying to Zenefits. They will also provide an overview of the company and the role, and answer any initial questions you may have. **Interviewers look for:** Enthusiasm for the role; Basic understanding of software development; Good communication skills **Evaluation criteria:** Basic understanding of programming concepts; Problem-solving approach; Communication clarity **Common rejection reasons:** Inability to articulate thought process clearly.; Lack of fundamental programming knowledge.; Poor problem-solving approach. ## Questions - Tell me about yourself. - Why are you interested in this role at Zenefits? - What are your salary expectations? ## Preparation tips - Be ready to talk about your resume. - Have questions prepared about the role and company. - Show enthusiasm for the opportunity. ## Round 2: Data Structures and Algorithms **Type:** Technical Interview - Coding · **Difficulty:** Medium · **Duration:** 60 min Assess coding skills with data structures and algorithms problems. This round focuses on your technical abilities. You will be asked to solve coding problems, typically involving data structures and algorithms. The interviewer will assess your approach to problem-solving, your coding skills, and your ability to explain your thought process and the complexity of your solution. **Interviewers look for:** Strong problem-solving skills; Proficiency in coding; Understanding of data structures and algorithms; Ability to think critically and communicate technical ideas **Evaluation criteria:** Correctness of the solution; Efficiency of the algorithm (time and space complexity); Code readability and maintainability; Ability to explain the solution and trade-offs **Common rejection reasons:** Incorrect or inefficient algorithm implementation.; Failure to handle edge cases.; Inability to explain the code or complexity.; Poor coding style. ## Questions - Given a binary tree, find its inorder traversal. - Implement a function to find the kth smallest element in an unsorted array. - Write a program to detect a cycle in a linked list. ## Preparation tips - Practice coding problems on platforms like LeetCode, HackerRank. - Review common data structures (arrays, linked lists, trees, graphs) and algorithms (sorting, searching, dynamic programming). - Understand Big O notation for time and space complexity. - Practice explaining your code and your reasoning. ## Round 3: System Design **Type:** Technical Interview - System Design · **Difficulty:** Medium · **Duration:** 60 min Assess system design and architectural thinking. 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. This is more conceptual and focuses on your architectural thinking. **Interviewers look for:** System design thinking; Understanding of distributed systems; Ability to make architectural decisions; Pragmatic approach to problem-solving **Evaluation criteria:** Ability to design scalable and reliable systems; Understanding of system components (databases, APIs, caching, load balancing); Trade-off analysis and decision-making; Handling of edge cases and failure scenarios **Common rejection reasons:** Lack of understanding of system design principles.; Inability to scale solutions.; Poor trade-off analysis.; Not considering failure scenarios. ## Questions - Design a system to handle real-time notifications. - How would you design a rate limiter? - Design a distributed cache system. ## Preparation tips - Study common system design patterns (e.g., microservices, load balancing, caching). - Understand database choices (SQL vs. NoSQL). - Practice designing systems like Twitter feed, URL shortener, etc. - Be prepared to discuss trade-offs of different design choices. ## Round 4: Manager Interview **Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min Assess behavioral fit, teamwork, and problem-solving approach. This interview focuses on your behavioral aspects and how you would fit into the team and company culture. You'll be asked questions about your past experiences, how you handle challenges, work with others, and your career goals. The manager will also assess your potential for growth within the company. **Interviewers look for:** Cultural fit; Teamwork capabilities; Problem-solving approach; Growth mindset **Evaluation criteria:** Alignment with company values; Teamwork and collaboration skills; Problem-solving approach in real-world scenarios; Motivation and career aspirations **Common rejection reasons:** Poor cultural fit.; Lack of enthusiasm or engagement.; Inability to articulate past experiences effectively.; Negative attitude towards past employers or colleagues. ## Questions - Tell me about a time you failed and what you learned from it. - Describe a challenging project you worked on and how you overcame obstacles. - How do you handle constructive criticism? - Where do you see yourself in 5 years? ## Preparation tips - Prepare examples using the STAR method for common behavioral questions. - Research Zenefits' company values and culture. - Think about your career goals and how this role aligns with them. - Be ready to discuss your strengths and weaknesses in a constructive way.