Saturday, February 24, 2024

Systems Development Engineer Amazon Interview

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What Does Dns Mean How Does It Work On An Internal Network

SDE Interview Coding Example

DNS stands for Domain Name System or Domain Name Server. Its a service that looks up IP addresses based on a domain name like or Many local area networks will have a local DNS server that provides DNS service to employees. Often internet service interruptions are actually a loss of DNS service, which prevents web browsers from connecting to websites using domain name URLs. This question will test a systems engineer candidates working knowledge of network technology. What to look for in an answer:

  • Knowledge of internet and network infrastructure
  • Knowledge of network troubleshooting
  • Ability to communicate issue in simple terms


DNS is a network service that makes it possible to connect to internet or local addresses using domain names instead of IP addresses. A web browser requests the IP address from a DNS server and then uses that address to make a connection.

What Does The System Design Competency Interview Assess

This competency evaluates candidates ability to design a software system, in other words, to explain the systems overall layout rather than discuss specific code issues. You should be able to discuss system design in the context of requirements such as latency, redundancy, scalability, reliability, and performance.

Interview Process And Timeline

Whats the Amazon software development engineer interview process and timeline? It takes four to eight weeks on average and follows these steps:

  • Resume, cover letter, and referrals
  • HR recruiter email or call
  • Online assessment
  • Phone screens: one to two interviews
  • Onsite: four to six interviews
  • Debrief: interviewers make a decision
  • You get an offer!
  • Also Check: Erwin Data Modeler Interview Questions

    Tips For Amazon Interview Preparation

    Now that we know about the rich heritage of Amazon, its work culture, and Leadership Principles, I am sure that you are tempted to interview at Amazon and take a job! Here are a few tips which you can use to crack Amazon’s interview and get a job

  • Understand the Leadership Principles Well – As mentioned before, Amazonians take great pride as far as their Leadership Principles are concerned. Therefore, knowing about these principles and citing an instance or two where the candidate has applied them in real life will have a positive impact on the interviewers. This leaves an impression that the candidate is genuinely interested in working with the company.
  • Be Thorough with Data Structures and Algorithms – At Amazon, there is always an appreciation for great problem solvers. If you want to have a good impression of the interviewers, the best way is to prove that you have worked a lot on developing your logic structures and solving algorithmic problems. A good understanding of Data Structures and Algorithms and having one or two good projects always earn you brownie points with Amazon.
  • What Should You Expect During An Interview

    Amazon Web Services

    The Amazon interview is not a mere formality. It is designed to genuinely challenge candidates and to be an impartial process.

    For this reason, you can expect the interviewers to pause multiple times to take notes during the interview, challenge you with complex questions, interrupt your responses to ask you to provide more details or ask follow-up questions.

    In some cases, the interviewers might prompt you to provide more information in your replies. On the other hand, interviewers will often be available to answer questions about their own experience working for Amazon, which you can use to improve your own knowledge.

    Also Check: How To Dress Casually For An Interview

    Amazon Systems Development Engineer Interview Questions

    • – San Salvador and Rum Cay
    • – Central Andros District
    • – Ar Rifa’ wa al Mintaqah al Jan
    • – Al Mintaqah al Gharbiyah
    • Bosnia and Herzegovina – All Cities
    • – Federation of Bosnia and Herze
    • – Bosnia Serb Republic
    • – Région de la Ville de N’Djaména
    • – San Andrés and Providence and
    • Democratic Republic of Congo – All Cities
    • – Baladiyat al Jabal al Akhdar
    • – Baladiyat an Nuqat al Khams
    • – Shabyat Wd al ayt
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    • Papua New Guinea – All Cities
    • – Baladiyat az¸ Z¸aayin
    • – Autonomous Province of Kosovo and Metohija
    • – Sveti Andra v Slovenskih Gori
    • Trinidad and Tobago – All Cities
    • United Arab Emirates – All Cities


    I applied through college or university. The process took 3 weeks. I interviewed at Amazon


    Amazon interview process was so smooth and good. There were 1 online assessment round and 1 technical and 1 technical+hr round. In tech+hr round they are asking about their leadership principle.

    I applied through a recruiter. I interviewed at Amazon

    InterviewInterview Questions

    Increase Your Knowledge Of Other Sde Technical Topics

    Amazon is a technology company, and candidates are expected to have a broad knowledge of technical topics beyond the direct issues theyll be assessed for. Knowledge of internet technology, artificial intelligence, big data, and multiple programming languages is expected, as well as familiarity with object-oriented design and distributed computing.

    Also Check: Ios System Design Interview Questions

    System Development Engineer Interview


    I applied online. The process took 2 weeks. I interviewed at Amazon in Dec 2021


    Long but fast process.Very clear from the very beginning.They help you to be successful. Very informative when it comes to your questions.Fast feedback.Once you show that technically you meet almost all need on the position then all is in the behavioral questions

    Interview Questions

    • A lot of behavioral questions that you have to answer using the STAR method. If you read all emails they send to you then you can be very well prepared.

    Ability To Solve Complex And Technical Problems

    Meet Viral, a Software Development Engineer at Amazon

    As a Software Design Engineer, you should be able to solve complex technical problems by breaking them down into simple tasks and translating the solution into good code.

    You should not only rehearse your technical skills, but practice understanding complex and vague problems the interviewer will usually pose the problem in a deliberately vague way and is looking to see your own ability to clarify it by asking questions.

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    What Happens Behind The Scenes

    Your recruiter is leading the process and taking you from one stage to the next. Here’s what happens at each of the stages described above:

    • After the phone screens, your recruiter decides to move you to the onsite or not, depending on how well you’ve done up to that point
    • After the onsite, each interviewer files their notes into the internal system, grades you and makes a hiring recommendation
    • The “Debrief” brings all your interviewers together and is led by the Bar Raiser, who is usually the most experienced interviewer and is also not part of the hiring team. The Bar Raiser will try to guide the group towards a hiring decision. It’s rare, but they can also veto hiring even if all other interviewers want to hire you.
    • You get an offer. If everything goes well, the recruiter will then give you an offer, usually within a week of the onsite but it can sometimes take longer

    It’s also important to note that recruiters and people who refer you have little influence on the overall process. They can help you get an interview at the beginning, but that’s about it.

    How To Prepare For The Amazon Sde Interview

    You can crack the Amazon Software Development Engineer Interview if you stick to the following tips.

    • Learn about Amazon’s leadership principles and the company culture.
    • Aim for 10 to 15 mock interviews to analyze your interview style, identify any weaknesses and perfect your answers. Mock interview preparation is without a doubt the best way to ace your interview because itâs the closest thing to a real interview, without the high stakes of landing your dream job. The process allows you to practice the stories and answers youâve prepared and a great coach will give you direct feedback that you can use immediately. People see a dramatic improvement in confidence, communication style and the quality of their examples even after one hour of mock interview prep.
    • Get a firm grasp on the concept of data structures and algorithms and learn to code in any programming language.
    • Solve different problems and ask your peers to help you with interview preparation. You can use sites like HackerRank and LeetCode that have countless sample coding questions you can practice on.
    • Prepare your answers to the typical behavioral questions, and practice your storytelling techniques.

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    Describe A Past Project You Worked On That Involved Systems Engineering What Was Your Role

    Systems engineers generally work on the development of in-house IT infrastructure, which can range from reporting applications to internal networks and web servers. As a result, a systems engineer can be a technological jack-of-all-trades with a variety of past experiences. One candidate will have different strengths from the next. Questions like this will give you a better understanding of a candidates expertise and how well their skill set will fit your organizations needs. What to look for in an answer:

    • Areas of expertise
    • Past experience on specific projects
    • Technical communication skills


    A project that Im proud of is a reporting system overhaul I was involved in with a major financial company. I oversaw the development of a distributed processing system that improved report processing time by 50 percent.

    How I Prepared For Amazon Interview Software Engineer

    Kanban vs Scrum Methodology: The Difference you Should Know ...

    Technology is on the rise and software engineering has been becoming more popular and competitive. Big tech companies such as Amazon are always the ideal workplace environment to chart career path for many people. I am no exception and I took my shot with Amazon and succeeded in landing an offer.

    It took me two weeks to prepare for the interview process, so I would recommend you to spend a lot of time to prepare carefully as well. I divided this preparation process into two phases, starting phase and running phase.

    Starting Phase

    During this phase, I focused mainly on reviewing the fundamentals of data structures, some of the popular algorithms and familiarizing myself with the .

    For algorithms, knowing some of the well-known ones are quite important. It could help you to solve the interview problems faster, and help you stand out as a bright and knowledgeable candidate. Again, I used GeeksforGeeks website to review algorithms

    In this phase, I also spent a day to read through and try to understand what the are, as they are the core of the Amazons culture and what contribute to Amazon success.

    Running Phase

    This is the phase that mostly focuses on preparing and practicing for interview questions, and starts solving as many coding problems as possible.

    Situation: What was the problem and why it happened.

    Task: What was the tasked that had been assigned to you to solve the problem.

    Result: The final result of your action.

    Some tips for you during the interview:

    Also Check: Software Engineer In Test Interview Questions

    Faqs On Amazon Software Development Engineer Interviews

    1. What’s Amazon’s Software Development Engineer interview process, and how do I get started?

    Amazonâs interview process for SDEs looks something like this:

  • Application Process
  • Phone Screen: 1-2 interviews
  • Onsite Interview: 4-6 interviews
  • 2. At Amazon software engineer interviews, do I need to qualify every round to get an offer?

    Yes, at Amazon tech interviews, you need to pass every round to be able to qualify for the next.

    3. What is the Amazon âBar Raiserâ interview?

    Amazonâs Bar Raiser interview is conducted by experts to see that for each competency that they test, you are least as good as or better than the average Amazon SDE. It is a crucial step in Amazonâs hiring decision process.

    Amazon Software Development Engineer Roles And Responsibilities

    Amazon looks for software engineers who believe in the power of innovation. If you like to solve highly complex problems and dream of impacting lives on a global scale with your work, Amazon is the perfect workplace for you.

    Amazon fosters a work culture of learning and curiosity and wants to hire people who want to make the world a better place.

    As an SDE at Amazon, you will be required to:

    • Build innovative, high-volume, and mission-critical software solutions.
    • Shape the vision, definition, roadmap, design, and development of product features.
    • Innovate new technologies to deliver game-changing products and services.
    • Design and implement critical features in front-end, back-end, or full-stack systems.
    • Understand the requirements of customers and bring a consensus between multiple teams.
    • Learn new technologies and train new teammates.

    Note: There are 4 levels of Software Development Engineers at Amazon: L4 , L5 , L6 , and L7 .

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    Other Important System Design Considerations

    For Amazon Software Development Engineer candidates, its important that they be able to identify software that can scale effectively. This is because Amazon is an immense company and its software must be able to deal with increasing loads.

    Another item you must keep in mind is fault tolerance and redundancy. For a customer-oriented company such as Amazon, its necessary that all software be designed to be as reliable and redundant as possible.

    What Kinds Of Documentation Have You Created In The Past

    Amazon System Design Preparation (SIP)

    Systems engineers often serve as managers or consultants for technology projects and develop documentation in those support roles. They might help create requirements or planning documents at the beginning of a project, or they might oversee the writing of end user documentation for software. If you expect a candidate to have these skills, its a good idea to explore their past documentation experience. Pay attention to the types of collaboration involved in the documentation theyve worked on. What to look for in an answer:

    • Past experience with technical documentation
    • Collaboration and planning experience


    In my last role with a software service company, I was involved with creating project plan documents for outside clients on a regular basis. I worked with our sales and development teams.

    Read Also: How To Ace A Product Manager Interview

    Amazon Interview Experience For System Development Engineer

    Round 1: The assessment consisted of 9 components like software testing, SQL/database, algorithms, Linux, pseudo code, data structures, coding, and networks.

  • The coding section had a single question: Count Derangements
  • 32 students were shortlisted out of 804 students, of which 8 were selected for the system development engineer role.

    Round 2: I was really nervous when the interview began, but the interviewer was a very nice person he started with his introduction, and then we moved on to mine, I was totally comfortable with this time.

    He started discussing one of my projects and asked a few questions where ever he felt like.

    Then we moved on to live code, questions asked:

  • I solved it using an unordered map, in which I traversed the array two times he asked if can do it in one traversal, I was able to provide an efficient solution then he asked about space and time complexity, at the end he was satisfied by my approach.
  • In order traversal of a tree without recursion. I solved it using recursion first, he asked me to explain the concept of recursion and function call stack then he asked me to do it without recursion, I was not able to code it but I explained a two-stack approach to him which again I was not able to finish, he was really nice about this and told me not to worry and moved on to the next question.
  • OS questions: spooling and a few others I cant recall.
  • Other questions:

  • He then explained what immutability meant.
  • Learn About Amazon’s Culture

    Most candidates fail to do this. But before investing tons of time preparing for an interview at Amazon, you should take some time to make sure it’s actually the right company for you.

    Amazon is prestigious and it’s tempting to assume that you should apply, without considering things more carefully. But, it’s important to remember that the prestige of a job won’t make you happy in your day-to-day work. It’s the type of work and the people you work with that will.

    If you know engineers who work at Amazon or used to work there, talk to them to understand what the culture is like. The Leadership Principles we discussed above can give you a sense of what to expect, but there’s no replacement for a conversation with an insider.

    We would also recommend reading the following resources:

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    Topics To Prepare For Amazon Software Development Engineer Interview

    Before you dive into the technical topics to prepare for Amazonâs Software Development Engineer interview, you should consult your recruiter about the topics most likely to be discussed in the interview.

    Amazonâs technical interviews typically require candidates to solve coding and system design whiteboarding problems.

    Amazon recommends these topics to prepare for a technical interview:

    • Programming language

    Also, read and for more Amazon interview questions.

    What Exactly Is Amazon Looking For

    AWS Software Engineering Managers

    At the end of each interview your interviewer will grade your performance using a standardized feedback form that summarizes the attributes Amazon looks for in a candidate. That form is constantly evolving, but we have listed some of its main components below.

    A) Notes

    The interviewer will file the notes they took during the interview. This usually includes: the questions they asked, a summary of your answers and any additional impressions they had .

    B) Technical competencies

    Your interviewer will then grade you on technical competencies. They will be trying to determine whether you are “raising the bar” or not for each competency they have tested.

    In other words, you’ll need to convince them that you are at least as good as or better than the average current Amazon SDE at the level you’re applying for .

    The exact technical competencies you’ll be evaluated against vary by role. But here are some common ones for SDE roles:

    • Problem solving
    • Have Backbone Disagree and Commit

    D) Overall recommendation

    Finally, each interviewer will file an overall recommendation into the system. The different options are along the lines of: “Strong hire”, “Hire”, “No hire”, “Strong no hire”.

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