# Software Engineer
**Role:** Software Engineer · **Level:** Associate Engineer
**Company:** [Qualcomm](https://scaleengineer.com/companies/qualcomm)
**Difficulty:** Medium
**Salary:** US$75000 - US$95000
**Experience:** 0 - 2
**Timeline:** ~14 days
This interview process is for an Associate Software Engineer position at Qualcomm. It is designed to assess a candidate's foundational knowledge in computer science, problem-solving abilities, and potential for growth within the company.
Canonical: https://scaleengineer.com/interviews/qualcomm/associate-engineer-software-engineer
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## Overall evaluation

- Technical Skills
- Behavioral Attributes

## Questions asked

- Write a function to reverse a linked list.
- Find the kth smallest element in a binary search tree.
- Implement a queue using two stacks.
- Explain the difference between BFS and DFS.
- What is a deadlock and how can it be prevented?
- Describe the ACID properties of database transactions.
- How would you design a URL shortener service?
- Tell me about a time you had a conflict with a team member and how you resolved it.
- What are your strengths and weaknesses?
- Why are you interested in working at Qualcomm?

## Preparation tips

### lists

- Master fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, recursion).
- Practice coding problems on platforms like LeetCode, HackerRank, or GeeksforGeeks.
- Review core computer science concepts: operating systems, databases, computer networks, and object-oriented programming.
- Understand the software development lifecycle (SDLC) and common development methodologies (Agile, Waterfall).
- Prepare for behavioral questions by reflecting on your past experiences using the STAR method (Situation, Task, Action, Result).
- Research Qualcomm's products, values, and recent news to tailor your answers.
- Practice explaining your thought process clearly and concisely, both verbally and on a whiteboard.
- For system design questions, familiarize yourself with concepts like scalability, availability, and trade-offs.
- Be ready to discuss your resume and projects in detail.

### studyPlan

- {"title":"Data Structures","longDescription":"Weeks 1-2: Focus on Data Structures. Cover arrays, linked lists, stacks, queues, trees (binary trees, BSTs, AVL trees), heaps, and hash tables. Practice implementing these structures and solving problems related to them. Understand their time and space complexities.","shortDescription":"Weeks 1-2: Data Structures (Arrays, Linked Lists, Trees, Hash Tables). Practice implementations and complexity analysis."}
- {"title":"Algorithms","longDescription":"Weeks 3-4: Focus on Algorithms. Cover sorting algorithms (bubble sort, merge sort, quicksort), searching algorithms (binary search), graph traversal (BFS, DFS), dynamic programming, and recursion. Practice solving algorithmic problems using these techniques.","shortDescription":"Weeks 3-4: Algorithms (Sorting, Searching, Graph Traversal, DP, Recursion). Solve algorithmic problems."}
- {"title":"Core Computer Science","longDescription":"Week 5: Review core Computer Science concepts. This includes operating systems (processes, threads, memory management), database concepts (SQL, normalization), and computer networks (TCP/IP, HTTP).","shortDescription":"Week 5: Core CS Concepts (OS, Databases, Networks)."}
- {"title":"System Design & Behavioral","longDescription":"Week 6: System Design basics and Behavioral preparation. Understand concepts like scalability, availability, load balancing, and caching. Prepare for behavioral questions using the STAR method, focusing on teamwork, problem-solving, and learning.","shortDescription":"Week 6: System Design Basics & Behavioral Prep (STAR Method)."}
- {"title":"Practice & Mock Interviews","longDescription":"Week 7: Mock Interviews and Practice. Conduct mock interviews to simulate the actual interview environment. Practice coding on a whiteboard or a shared editor. Refine your communication skills and ability to explain your solutions.","shortDescription":"Week 7: Mock Interviews & Practice Coding."}

## Location differences

- {"location":"Bangalore, India","differences":{"tips":["Be prepared to whiteboard solutions for algorithmic problems.","Review fundamental computer science concepts.","Practice explaining your thought process clearly.","Research common interview questions for entry-level software engineers."],"interviewFocus":["Strong emphasis on data structures and algorithms.","Understanding of operating system concepts.","Basic knowledge of database systems.","Problem-solving and analytical skills."],"commonQuestions":["Explain the difference between a process and a thread.","Describe the concept of polymorphism with an example.","How would you optimize a SQL query?","What are the advantages of using a NoSQL database?","Discuss a challenging technical problem you faced and how you solved it."]}}
- {"location":"San Diego, USA","differences":{"tips":["Prepare to discuss system design scenarios.","Highlight your experience with cloud services.","Showcase your ability to work effectively in a team.","Be ready to talk about your contributions to past projects."],"interviewFocus":["System design and architecture.","Experience with cloud technologies.","Collaboration and teamwork skills.","Understanding of software development lifecycle.","Adaptability and continuous learning."],"commonQuestions":["Describe your experience with cloud computing platforms (AWS, Azure, GCP).","How do you approach designing a scalable web application?","What are your thoughts on microservices architecture?","Discuss a project where you had to collaborate with a cross-functional team.","How do you stay updated with the latest technology trends?"]}}

## Round 1: Data Structures and Algorithms
**Type:** Technical Interview (Coding) · **Difficulty:** Easy to Medium · **Duration:** 45 min
Coding round focusing on data structures and algorithms.
This round typically involves a coding challenge, often conducted via a shared online editor or whiteboard. The interviewer will present one or two problems focused on data structures and algorithms. They will assess your ability to understand the problem, devise an efficient solution, write clean and correct code, and explain your approach.
**Interviewers look for:** A solid understanding of data structures and algorithms.; Ability to translate a problem into code.; Clear communication of thought process.; Attention to edge cases and constraints.
**Evaluation criteria:** Correctness of the solution; Efficiency of the solution (time and space complexity); Code clarity and readability; Problem-solving approach; Communication of the solution
**Common rejection reasons:** Inability to solve basic coding problems.; Poor understanding of fundamental data structures and algorithms.; Difficulty in explaining thought process.; Lack of attention to detail in code.
## Questions

- Given an array of integers, return indices of the two numbers such that they add up to a specific target.
- Implement a function to check if a binary tree is a valid Binary Search Tree.

## Preparation tips

- Practice coding on a whiteboard or shared editor.
- Focus on explaining your thought process step-by-step.
- Consider edge cases and optimize your solution for time and space complexity.

## Round 2: System Design
**Type:** System Design / Architecture · **Difficulty:** Medium · **Duration:** 60 min
System design round focusing on scalability and architecture.
This round assesses your ability to design and think about larger systems. You might be asked to design a specific feature or a complete system (e.g., a URL shortener, a social media feed). The focus is on your approach to breaking down the problem, identifying components, considering scalability, availability, and making informed design decisions.
**Interviewers look for:** Ability to design scalable and reliable systems.; Understanding of distributed systems concepts.; Knowledge of common design patterns.; Ability to articulate design decisions and trade-offs.
**Evaluation criteria:** Understanding of system components.; Scalability and performance considerations.; Trade-off analysis.; Design choices and justifications.; Clarity of communication.
**Common rejection reasons:** Lack of understanding of system design principles.; Inability to handle scalability and performance considerations.; Poor trade-off analysis.; Difficulty in communicating design choices.
## Questions

- Design a system to shorten URLs like bit.ly.
- How would you design a news feed for a social media platform?

## Preparation tips

- Study common system design concepts (load balancing, caching, databases, APIs).
- Practice designing various systems.
- Be prepared to discuss trade-offs and justify your design choices.

## Round 3: Behavioral and Fit
**Type:** Behavioral Interview · **Difficulty:** Easy to Medium · **Duration:** 30 min
Behavioral round assessing fit, teamwork, and motivation.
This round focuses on your behavioral aspects, career goals, and overall fit with the team and Qualcomm's culture. You'll be asked questions about your past experiences, how you handle challenges, work in a team, and your motivations. The interviewer wants to understand your personality, work ethic, and how you align with the company's values.
**Interviewers look for:** Good communication and interpersonal skills.; Evidence of teamwork and collaboration.; Self-awareness and ability to reflect on past experiences.; Alignment with company values.; Enthusiasm for the role and Qualcomm.
**Evaluation criteria:** Communication skills; Teamwork and collaboration; Problem-solving approach (behavioral); Motivation and interest in the role/company; Cultural fit
**Common rejection reasons:** Poor communication skills.; Lack of enthusiasm or interest.; Inability to articulate past experiences.; Mismatch in cultural fit or values.; Unrealistic salary expectations.
## Questions

- Tell me about a time you faced a significant technical challenge and how you overcame it.
- Describe a situation where you had to work with a difficult team member.
- What are your career goals for the next 3-5 years?

## Preparation tips

- Prepare answers to common behavioral questions using the STAR method.
- Research Qualcomm's mission, values, and culture.
- Be ready to discuss your career aspirations.
- Ask thoughtful questions about the role and the company.