CME Group Senior Developer Interview Questions and Answers

Opps Java preferred and sql related question.

Q1. Basic questions
Ans. 
Basic software development questions assess fundamental programming knowledge and problem-solving skills.
• Understand core programming concepts like variables, loops, and functions.

• Familiarity with data structures such as arrays, lists, and dictionaries.

• Knowledge of algorithms, including sorting and searching techniques.

• Experience with version control systems like Git for collaboration.

• Ability to debug code and troublesh...read more
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Q2. Future goals and plans
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Q1. Tell me about yourself
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Q2. Por==roject role?
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In a project role, I contribute to software development, collaborating with teams to deliver high-quality solutions on time.
• Collaborated with cross-functional teams to define project requirements and scope.

• Led the development of a feature that improved user experience by 30%.

• Participated in code reviews to ensure code quality and adherence to best practices.

• Utilized Agile methodologies to manage project timelines and d...read more
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Round duration - 30 minutes
Round difficulty - Easy

Basic questioning about my work experiences, things I have developed and created, my work experience(internships). The challenges which I have faced and how I overcame them. Basic questions about some android concepts

Q1. What puzzles were asked during the interview, and can you describe the projects you discussed?
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Round duration - 45 minutes
Round difficulty - Medium

The interviewer was very friendly and asked about various things and tried to judge my understanding of the projects and how deep I know about the concepts I have implemented in my projects

Q1. RxJava
RxJava
Ans. 
RxJava is a popular library for composing asynchronous and event-based programs using observable sequences.
• RxJava provides a functional API for working with asynchronous data streams.

• It uses Observables to emit items and notify subscribers.

• Operators can be used to transform, filter, and combine these streams of data.

• Schedulers are used to control the threading behavior of these operations.

• Example: Creating an Observabl...read more
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Round duration - 40 minutes
Round difficulty - Medium

This was a system design round

Q1. Can you explain the fragment lifecycle in Android system design?
Ans. 
Fragment lifecycle in Android involves various states and methods for managing UI components.
• Fragments have several lifecycle states such as created, started, resumed, paused, stopped, and destroyed.

• Methods like onCreate(), onCreateView(), onResume(), onPause(), onStop(), onDestroy() are used to manage fragment lifecycle.

• Fragment lifecycle is closely tied to the hosting Activity's lifecycle.

• Example: When a fragment is ...read more
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Implement some LLD and use clean code formulas

Better be prepared for all deep dive questions about tech and project you worked

Q1. Mostly Tech related questions asked in first round
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Q2. Managerial round is the final one
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Q1. What are OOPS concepts
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Q2. What are solid Concept
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Solid concepts are fundamental principles or ideas that are well-established and widely accepted in a particular field.
• Solid concepts provide a strong foundation for further learning and development.

• They are essential for understanding complex topics and solving problems effectively.

• Examples of solid concepts in software engineering include object-oriented programming, design patterns, and data structures.
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Q3. Write Code for Palindrome String
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Q1. Circle process related questions
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Q2. Scripting language questions
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Q1. Difference between set/list/hashmap
Ans. 
Set, List, and HashMap are all data structures in Java with different characteristics and use cases.
• Set: Collection of unique elements, does not allow duplicates. Example: HashSet, TreeSet.

• List: Ordered collection of elements, allows duplicates. Example: ArrayList, LinkedList.

• HashMap: Key-value pair mapping, allows null keys and values. Example: HashMap, LinkedHashMap.
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