# Software Engineer II
**Role:** Software Engineer · **Level:** G9
**Company:** [Amadeus](https://scaleengineer.com/companies/amadeus)
**Difficulty:** Medium to Hard
**Salary:** US$110000 - US$140000
**Experience:** 3 - 7
**Timeline:** ~14 days
The Software Engineer II (G9) interview at Amadeus is designed to assess a candidate's technical proficiency, problem-solving abilities, and cultural fit within the company. It typically involves multiple rounds, starting with an HR screening, followed by technical interviews focusing on data structures, algorithms, system design, and behavioral aspects. The process aims to identify engineers who can contribute effectively to Amadeus's innovative projects and collaborative environment.
Canonical: https://scaleengineer.com/interviews/amadeus/g9-software-engineer
---
## Overall evaluation

- Technical Skills
- Communication
- Behavioral and Cultural Fit

## Questions asked

- Describe a complex technical problem you faced and how you solved it.
- How would you design a URL shortening service?
- Explain the concept of polymorphism with a real-world example.
- What are the advantages and disadvantages of using microservices?
- Tell me about a time you disagreed with a team member and how you resolved it.
- How do you approach testing your code?
- What is a distributed system, and what are its challenges?
- How do you handle technical debt?
- Describe your experience with asynchronous programming.
- What are your career goals for the next 3-5 years?

## Preparation tips

### lists

- Review fundamental data structures and algorithms (arrays, linked lists, trees, graphs, hash maps, sorting, searching).
- Practice coding problems on platforms like LeetCode, HackerRank, or similar.
- Understand common design patterns and principles (SOLID, DRY, KISS).
- Study system design concepts (scalability, availability, databases, caching, load balancing, APIs).
- Prepare for behavioral questions using the STAR method (Situation, Task, Action, Result).
- Research Amadeus's products, services, and company culture.
- Be ready to discuss your past projects in detail, highlighting your contributions and challenges.
- Practice explaining complex technical concepts clearly and concisely.
- Prepare questions to ask the interviewer about the role, team, and company.

### studyPlan

- {"title":"Data Structures and Algorithms Fundamentals","longDescription":"Weeks 1-2: Focus on core data structures (arrays, linked lists, stacks, queues, trees, graphs) and their common operations. Practice basic algorithms like sorting (quicksort, mergesort) and searching (binary search). Solve easy to medium problems on these topics.","shortDescription":"Weeks 1-2: Data Structures & Basic Algorithms. Practice easy/medium problems."}
- {"title":"Advanced Algorithms and Complexity Analysis","longDescription":"Weeks 3-4: Dive deeper into advanced algorithms (dynamic programming, greedy algorithms, graph traversal - BFS/DFS). Understand time and space complexity analysis (Big O notation). Solve medium to hard problems.","shortDescription":"Weeks 3-4: Advanced Algorithms & Complexity. Practice medium/hard problems."}
- {"title":"System Design","longDescription":"Weeks 5-6: Focus on system design. Learn about designing scalable and reliable systems, including databases (SQL vs. NoSQL), caching strategies, load balancing, message queues, and API design. Study common system design interview patterns.","shortDescription":"Weeks 5-6: System Design Principles. Study scalability, databases, caching, APIs."}
- {"title":"Behavioral Preparation","longDescription":"Week 7: Prepare for behavioral questions. Reflect on past experiences and prepare stories using the STAR method. Understand Amadeus's values and how your experiences align with them.","shortDescription":"Week 7: Behavioral Preparation. Use STAR method. Align with Amadeus values."}
- {"title":"Mock Interviews and Final Review","longDescription":"Week 8: Mock interviews and review. Practice coding and system design problems under timed conditions. Review all topics and refine your explanations. Prepare thoughtful questions for the interviewers.","shortDescription":"Week 8: Mock Interviews & Review. Practice timed sessions. Prepare questions."}

## Location differences

- {"location":"Europe","differences":{"tips":["Research Amadeus's presence and projects in this specific region.","Be prepared to discuss how your skills align with local industry needs.","If the interview is in a different language, ensure your fluency is adequate."],"interviewFocus":["Adaptability to local market demands.","Understanding of regional technology trends.","Communication skills in the local language (if applicable)."],"commonQuestions":["Tell me about a challenging project you worked on.","How do you handle conflicts within a team?","Describe a time you had to learn a new technology quickly.","What are your thoughts on microservices architecture?","Explain the difference between SQL and NoSQL databases."]}}
- {"location":"North America","differences":{"tips":["Highlight projects that demonstrate scalability and performance.","Be ready to discuss your experience with agile methodologies.","Familiarize yourself with common tech stacks used in North America."],"interviewFocus":["Experience with specific technologies prevalent in the North American market.","Ability to work in fast-paced, agile environments.","Understanding of scalability and performance optimization."],"commonQuestions":["How do you approach debugging complex issues?","Describe your experience with cloud platforms like AWS or Azure.","What are the trade-offs between monolithic and microservices architectures?","How do you ensure code quality and maintainability?","Tell me about a time you failed and what you learned from it."]}}
- {"location":"Asia","differences":{"tips":["Showcase experience with technologies widely adopted in Asian markets.","Emphasize your ability to work effectively in multicultural teams.","Be prepared to discuss your career growth aspirations within Amadeus."],"interviewFocus":["Proficiency in specific programming languages and frameworks popular in Asia.","Experience with large-scale distributed systems.","Cultural awareness and ability to collaborate in diverse teams."],"commonQuestions":["How do you design for high availability and fault tolerance?","Discuss your experience with CI/CD pipelines.","What are your strategies for mentoring junior engineers?","Explain the principles of RESTful API design.","How do you stay updated with the latest software development trends?"]}}

## Round 1: HR Introduction
**Type:** HR Screening · **Difficulty:** Easy · **Duration:** 30 min
HR screening to assess cultural fit, motivation, and logistics.
This initial round is conducted by an HR representative to assess your overall fit with Amadeus, understand your career aspirations, and discuss logistical aspects like salary expectations and availability. It's an opportunity to learn more about the company culture and the specific role.
**Interviewers look for:** Enthusiasm and passion for technology; Alignment with Amadeus values; Clear communication; Basic understanding of the role
**Evaluation criteria:** Cultural fit; Motivation for the role and company; Basic understanding of the role requirements; Communication clarity
**Common rejection reasons:** Poor communication skills; Lack of enthusiasm; Inability to articulate career goals; Mismatched salary expectations
## Questions

- Tell me about yourself and your career background.
- Why are you interested in Amadeus and this specific role?
- What are your salary expectations?
- What are your strengths and weaknesses?

## Preparation tips

- Research Amadeus's mission, values, and recent news.
- Prepare to talk about your career goals and why you're interested in this specific role.
- Be ready to discuss your salary expectations.
- Practice answering common behavioral questions.
- Prepare questions to ask the recruiter about the company culture, team, and role.

## Round 2: Technical Coding Challenge
**Type:** Data Structures and Algorithms Interview · **Difficulty:** Medium · **Duration:** 60 min
Technical round focusing on coding problems, data structures, and algorithms.
This technical round focuses on your core programming skills. You'll be asked to solve coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your thought process in arriving at the solution.
**Interviewers look for:** Logical approach to problem-solving; Correct implementation of algorithms and data structures; Ability to analyze time and space complexity; Clean and readable code
**Evaluation criteria:** Problem-solving ability; Knowledge of data structures; Algorithmic thinking; Coding proficiency; Code clarity and efficiency
**Common rejection reasons:** Inability to solve coding problems efficiently; Poor understanding of fundamental data structures and algorithms; Difficulty explaining code logic; Suboptimal time or space complexity
## Questions

- Given an array of integers, find the two numbers that add up to a specific target.
- Implement a function to reverse a linked list.
- Find the kth smallest element in a binary search tree.
- Write a function to check if a string is a palindrome.

## Preparation tips

- Practice coding problems on platforms like LeetCode, HackerRank, focusing on data structures (arrays, linked lists, trees, graphs) and algorithms (sorting, searching, dynamic programming).
- Understand Big O notation for analyzing time and space complexity.
- Be prepared to explain your thought process and justify your choices.
- Practice writing code on a whiteboard or in a shared editor.
- Review common coding patterns and best practices.

## Round 3: System Design and Architecture
**Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min
Assesses ability to design scalable and reliable software systems.
This round assesses your ability to design and architect software systems. You'll be presented with a high-level problem (e.g., design a social media feed, a URL shortener, or a ride-sharing service) and expected to propose a scalable, reliable, and maintainable solution. This includes discussing database choices, caching strategies, load balancing, and API design.
**Interviewers look for:** Ability to design complex systems from scratch; Understanding of distributed systems concepts; Knowledge of various architectural patterns; Ability to justify design decisions and consider trade-offs
**Evaluation criteria:** System design capabilities; Understanding of scalability and performance; Knowledge of databases and storage; API design principles; Trade-off analysis
**Common rejection reasons:** Lack of understanding of system design principles; Inability to design scalable and reliable systems; Poor trade-off analysis; Difficulty explaining design choices
## Questions

- Design a system like Twitter's news feed.
- How would you design a rate limiter?
- Design a distributed key-value store.
- How would you design an API for a ride-sharing service?

## Preparation tips

- Study system design concepts: scalability, availability, consistency, databases (SQL/NoSQL), caching, load balancing, message queues, CDNs.
- Review common system design interview questions and case studies.
- Practice designing systems on paper or a whiteboard.
- Be prepared to discuss trade-offs between different design choices.
- Understand microservices architecture and its implications.

## Round 4: Behavioral and Managerial Fit
**Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min
Focuses on behavioral aspects, teamwork, and cultural fit.
This round focuses on your behavioral aspects and how you work within a team. You'll be asked questions about your past experiences, focusing on situations involving teamwork, conflict resolution, handling challenges, and leadership. The goal is to understand your working style and how you align with Amadeus's culture.
**Interviewers look for:** Examples of teamwork and collaboration; How candidates handle challenges and failures; Self-awareness and learning from experiences; Alignment with Amadeus's core values; Proactiveness and ownership
**Evaluation criteria:** Behavioral competencies; Teamwork and collaboration; Problem-solving approach; Adaptability; Leadership potential; Cultural alignment
**Common rejection reasons:** Poor collaboration skills; Lack of self-awareness; Negative attitude towards past experiences; Inability to provide specific examples; Poor alignment with company values
## Questions

- Tell me about a time you had a conflict with a colleague and how you resolved it.
- Describe a challenging project you worked on and what made it challenging.
- How do you handle constructive criticism?
- Tell me about a time you failed. What did you learn from it?
- How do you prioritize your work when you have multiple competing deadlines?

## Preparation tips

- Prepare specific examples using the STAR method (Situation, Task, Action, Result) for common behavioral questions.
- Reflect on your strengths, weaknesses, and how you handle feedback.
- Think about times you collaborated effectively, resolved conflicts, or demonstrated leadership.
- Understand Amadeus's company values and how your experiences align with them.
- Be honest and authentic in your responses.