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JPMorgan Chase & Co. Software Developer Interview Questions and Answers
39 Interview questions
Debugging a Python program involves identifying and fixing errors to ensure correct functionality.
Check for syntax errors: Ensure all parentheses, brackets, and quotes are properly closed.
Use print statements: Insert print statements to track variable values and program flow.
Utilize a debugger: Use tools like pdb to step through the code and inspect variables.
Review error messages: Pay attention to error messages ...
Hashmap allows null values and keys, while LinkedHashMap maintains insertion order.
Hashmap does not maintain insertion order, while LinkedHashMap maintains insertion order.
LinkedHashMap extends HashMap class and adds a doubly-linked list to maintain insertion order.
Hashmap allows null values and keys, while LinkedHashMap does not allow null keys but allows null values.
Hashmap is generally faster than LinkedHashMap...
The 2 Sum problem asks to find two numbers in an array that add up to a specific target.
Use a hash map to store numbers and their indices for quick lookup.
Iterate through the array, calculating the complement for each number.
If the complement exists in the hash map, return the indices.
Example: For nums = [2, 7, 11, 15] and target = 9, return [0, 1] since 2 + 7 = 9.
Handling an application running on different instances involves load balancing, monitoring, and synchronization.
Implement load balancing to distribute the workload evenly across instances.
Monitor the performance and health of each instance to ensure optimal operation.
Use synchronization techniques to maintain consistency and avoid conflicts between instances.
Implement failover mechanisms to handle instances going ...
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Yes, a distributed system can handle 1M requests per second by using load balancing, horizontal scaling, and caching.
Implement load balancing to distribute incoming requests across multiple servers.
Use horizontal scaling by adding more servers to handle the increased load.
Implement caching to store frequently accessed data and reduce the load on the backend.
Optimize the system by using efficient algorithms and dat...
Yes, a load balancer can handle multiple addition of new instances or pods.
A load balancer distributes incoming traffic across multiple instances or pods.
To handle multiple additions, the load balancer should be able to dynamically update its routing configuration.
Load balancers can use various algorithms to distribute traffic, such as round-robin, least connections, or weighted distribution.
Load balancers can als...
Caching improves application performance by storing frequently accessed data in memory.
Identify the data that needs to be cached
Choose a caching strategy (e.g., in-memory cache, distributed cache)
Implement caching logic in the application code
Set appropriate cache expiration policies
Handle cache invalidation when data changes
SOLID principles are a set of five design principles for writing maintainable and scalable code.
Single Responsibility Principle (SRP) - A class should have only one reason to change.
Open/Closed Principle (OCP) - A class should be open for extension but closed for modification.
Liskov Substitution Principle (LSP) - Subtypes should be substitutable for their base types.
Interface Segregation Principle (ISP) - A client...
Printing a matrix in spiral order
Start from the first element and print it
Move in a spiral order towards the center of the matrix
Repeat until all elements are printed
Use a shared variable and synchronization mechanisms to ensure natural order printing of numbers.
Create two threads, one for printing even numbers and the other for printing odd numbers.
Use a shared variable to keep track of the current number to be printed.
Implement synchronization mechanisms like locks or semaphores to ensure only one thread can access the shared variable at a time.
Each thread should check if it...
JPMorgan Chase & Co. Software Developer Interview Experiences
28 interviews found
Leo Valdez
I applied via Campus Placement
(2 Questions)
- Q1. This was for internship. The first questions were 10 questions based on guessing output of c program
- Q2. 2 coding questions with easy to medium difficulty based on strings and mathematical knowledge
(1 Question)
- Q1. This was a virtual interview round which had basic HR type questions.
(1 Question)
- Q1. This was code for good hackathon
Akash Shukla
(1 Question)
- Q1. Unittesting in python. DSA, algorithms
Anonymous
(4 Questions)
- Q1. Technical questions on firstround
- Q2. Logging System explanations about splunk
- Ans.
Splunk is a powerful logging system used for collecting, indexing, and analyzing machine-generated data.
Splunk is used for real-time monitoring, searching, and analyzing log data from various sources.
It can be used to troubleshoot issues, monitor system performance, and detect security threats.
Splunk allows users to create custom dashboards and reports for visualizing data insights.
It supports a wide range of data sour...
- Q3. Microservices Architecture explanation
- Ans.
Microservices architecture is an approach to software development where a single application is composed of small, independent services that communicate with each other through APIs.
Each service is responsible for a specific function or feature of the application
Services are loosely coupled, allowing for easier scalability and maintenance
Communication between services is typically done through lightweight protocols lik...
- Q4. Java 8 programming
(1 Question)
- Q1. Java 8 Programming
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Given a python program, debug the programme
- Ans.
Debugging a Python program involves identifying and fixing errors to ensure correct functionality.
Check for syntax errors: Ensure all parentheses, brackets, and quotes are properly closed.
Use print statements: Insert print statements to track variable values and program flow.
Utilize a debugger: Use tools like pdb to step through the code and inspect variables.
Review error messages: Pay attention to error messages for c...
- Q2. Find substrings from a list program in Python
- Ans.
Use list comprehension to find substrings in a list of strings in Python
Use list comprehension to iterate through the list of strings
Use the 'in' keyword to check if the substring is present in each string
Filter out strings that do not contain the substring
Skills evaluated in this interview
(1 Question)
- Q1. Normal java questions
I applied via Naukri.com and was interviewed in Jan 2024. There were 2 interview rounds.
(6 Questions)
- Q1. Discuss about your current project
- Q2. Questions related to current project
- Q3. How to monitor heap memory area? And how objects are removed from heap memory
- Ans.
Heap memory can be monitored using tools like profilers. Objects are removed from heap memory through garbage collection.
Use profilers like VisualVM or Java Mission Control to monitor heap memory usage
Analyze heap dumps to identify memory leaks and optimize memory usage
Garbage collection automatically removes unreferenced objects from heap memory
Different garbage collection algorithms like Mark and Sweep, Copying, and ...
- Q4. How to handle an application running on different instances?
- Ans.
Handling an application running on different instances involves load balancing, monitoring, and synchronization.
Implement load balancing to distribute the workload evenly across instances.
Monitor the performance and health of each instance to ensure optimal operation.
Use synchronization techniques to maintain consistency and avoid conflicts between instances.
Implement failover mechanisms to handle instances going offli...
- Q5. Can you design a load balancer which can handle multiple addition of new instances or pods?
- Ans.
Yes, a load balancer can handle multiple addition of new instances or pods.
A load balancer distributes incoming traffic across multiple instances or pods.
To handle multiple additions, the load balancer should be able to dynamically update its routing configuration.
Load balancers can use various algorithms to distribute traffic, such as round-robin, least connections, or weighted distribution.
Load balancers can also per...
- Q6. How to implements caching in your application?
- Ans.
Caching improves application performance by storing frequently accessed data in memory.
Identify the data that needs to be cached
Choose a caching strategy (e.g., in-memory cache, distributed cache)
Implement caching logic in the application code
Set appropriate cache expiration policies
Handle cache invalidation when data changes
(1 Question)
- Q1. Can you design a distributed system which can handle load of 1M requests per second?
- Ans.
Yes, a distributed system can handle 1M requests per second by using load balancing, horizontal scaling, and caching.
Implement load balancing to distribute incoming requests across multiple servers.
Use horizontal scaling by adding more servers to handle the increased load.
Implement caching to store frequently accessed data and reduce the load on the backend.
Optimize the system by using efficient algorithms and data str...
Interview Preparation Tips
Skills evaluated in this interview
Array question basic relate to string manipulation
I applied via LinkedIn and was interviewed in Jun 2024. There were 2 interview rounds.
Dsa qustion Tree graph and stack
(2 Questions)
- Q1. Data base internal
- Q2. Node js interna;
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Sep 2023. There were 5 interview rounds.
Related to dynamic programming
(1 Question)
- Q1. One to one coding
(1 Question)
- Q1. System design related
(1 Question)
- Q1. Just ask simple questions related to why jp Morgan why u want to join
(1 Question)
- Q1. Simple salary negotiation
Standanrd leetcode problems of medium difficulty
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