Vanderlande Industries Senior R&D Engineer Interview Questions and Answers

It was a normal aptitude test with mathematical questions.

It was a techno-coding test where I had to code while sharing my screen on a live conversation with the interviewer.

Q1. I was primarily asked about managerial questions on adaptability to new technology and creativity if existing solutions don't work.
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Q2. In a situation where your team is not getting a proper result with existing approach your team uses, how would you try to fix it?
Ans. 
I would analyze the current approach, identify the root cause of the issue, brainstorm alternative solutions, and collaborate with the team to implement and test them.
• Analyze the current approach to identify weaknesses

• Brainstorm alternative solutions with the team

• Implement and test the new solutions

• Regularly communicate and collaborate with team members
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Q1. How to identify and solve race condition.
Ans. 
Identifying and solving race conditions involves understanding concurrent execution and implementing synchronization mechanisms.
• Understand the critical sections of code where race conditions can occur

• Use synchronization mechanisms like locks, semaphores, or atomic operations to control access to shared resources

• Implement thread-safe data structures or use thread-safe libraries to avoid race conditions

• Use tools like sta...read more
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Q2. Solve an array question on finding the third largest in an unsorted array.
Ans. 
Find the third largest element in an unsorted array of strings.
• Sort the array in descending order.

• Remove duplicates if necessary.

• Return the element at index 2 as the third largest.
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Q1. Introduce yourself
Ans. 
I am a Senior Software Engineer with 8 years of experience in developing web applications using Java, Spring, and Angular.
• 8 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience in leading development teams

• Passionate about learning new technologies
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Q2. Build a digital stopwatch with HTML, CSS, JS
Ans. 
Build a digital stopwatch using HTML, CSS, and JS
• Create HTML structure with buttons for start, stop, and reset

• Use CSS to style the stopwatch display

• Implement JS logic to start, stop, and reset the stopwatch
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Q3. What is your day to day work life looks like?
Ans. 
As a Senior Software Engineer, my day-to-day work involves designing and developing software solutions, collaborating with team members, troubleshooting issues, and staying updated on industry trends.
• Designing and developing software solutions based on project requirements

• Collaborating with team members to discuss project progress and brainstorm solutions

• Troubleshooting and debugging code to fix issues and improve perf...read more
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Q4. Horizontal vs vertical scaling
Ans. 
Horizontal scaling involves adding more machines to distribute load, while vertical scaling involves increasing the power of existing machines.
• Horizontal scaling adds more machines to handle increased load

• Vertical scaling increases the power of existing machines

• Horizontal scaling is more cost-effective and easier to implement

• Vertical scaling may have limitations in terms of hardware capabilities

• Examples: Horizontal sca...read more
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Q5. Load balancer vs API gateway
Ans. 
Load balancer distributes incoming network traffic across multiple servers, while API gateway manages API traffic.
• Load balancer operates at the network layer, distributing traffic based on algorithms like round-robin or least connections.

• API gateway operates at the application layer, providing features like authentication, rate limiting, and caching for APIs.

• Load balancer can balance traffic for any type of application...read more
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Q6. There is a scenario where user wants to upload multiple files at once but provided API can on accept one file at a time, how tackle this scenario gracefully?
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Q1. As python developer, basic questions asked and all concepts are to be explained to interviewwr with example
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Q1. Sql and python interview questions to solve in code editor.
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Q1. Related projects and my role into it
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Q1. HR explained about company policies and salary negotiation and notice period related things
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Q1. Microservices vs monolithic
Ans. 
Microservices are modular and scalable, while monolithic is simpler but less flexible.
• Microservices allow for independent deployment and scaling of individual components

• Monolithic architecture is easier to develop and test, but can become unwieldy as the application grows

• Microservices can be more fault-tolerant and resilient to failures

• Monolithic architecture can be more efficient for small applications with limited fu...read more
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Q2. Difference between microservices and monolithic
Ans. 
Microservices are small, independent services that communicate with each other, while monolithic is a single, self-contained application.
• Microservices are loosely coupled and can be developed and deployed independently.

• Monolithic applications are tightly coupled and require a full deployment for any changes.

• Microservices allow for better scalability and fault tolerance.

• Monolithic applications can be simpler to develop ...read more
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Q1. Zero one knapsack problem
Ans. 
Zero one knapsack problem is a classic optimization problem in computer science.
• It involves selecting a subset of items with maximum value, subject to a weight constraint.

• It is a NP-hard problem and can be solved using dynamic programming.

• Examples include packing a backpack with limited weight capacity or selecting stocks for a portfolio with limited investment budget.
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Q2. 3 sum problem from leetcode
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Q1. Indexing a dictionary for faster search
Ans. 
Indexing a dictionary for faster search
• Use hash tables for constant time lookup

• Consider using a trie for prefix search

• Sort the keys for binary search

• Use a balanced tree for range queries
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Q1. WPF related question, Oops basics and C#.
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Q2. SQL Server and PL/SQL questions
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Q1. Round interview promoted to 2 round but didn't get call
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Q1. C# Selenium Automation
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Q1. BDD Specflow Framework
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Q1. Project Details/ Framework overview
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Q1. About your family/Job
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Q1. Oops concept and programing
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Q1. Problem solving and core concepts
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Q1. More on designs related
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