Maersk Interview Questions, Process, and Tips

Our first round test consists of all the aptitude reasoning questions along with technical and coding questions. Coding questions has very less time and should be written only in java language. Coding level is in between easy to moderate.

Q1. Technical questions asked by the panel are moderate. They mostly asked on java, SQL and data models. This round was almost 45min.
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Q2. Oops concepts in java
Ans. 
Oops concepts are the pillars of Java programming language.
• Encapsulation - wrapping data and methods into a single unit

• Inheritance - acquiring properties and behavior of parent class

• Polymorphism - ability of an object to take many forms

• Abstraction - hiding implementation details and showing only necessary information
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Q3. Why java is platform independent
Ans. 
Java is platform independent due to its bytecode and JVM.
• Java code is compiled into bytecode which is platform independent

• JVM (Java Virtual Machine) interprets the bytecode and executes it on any platform

• JVM acts as a layer between the code and the underlying operating system

• This allows Java programs to run on any platform without any modification

• Example: A Java program compiled on Windows can run on Linux or Mac witho
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Q4. Difference between java and c,c++
Ans. 
Java is a high-level programming language while C and C++ are low-level languages.
• Java is platform-independent, while C and C++ are platform-dependent.

• Java uses automatic memory management (garbage collection), while C and C++ require manual memory management.

• Java has built-in support for multithreading, while C and C++ require external libraries for multithreading.

• Java has a simpler syntax compared to C and C++.

• Java h...read more
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Q5. Method overloading and overriding concepts.
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Q6. Asked to write few SQL queries based on joins.
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Q7. SQL contraints, aggregate functions
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Q8. Different data models
Ans. 
Data models are structures used to organize and store data in a database.
• Relational data model

• Object-oriented data model

• Hierarchical data model

• Network data model

• Document data model
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Q9. Few coding questions on Java
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Q1. What do you know about Maersk
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Q2. Why do you want to join Maersk
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Q3. What is your goal after 5 years
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Q1. Technical Screening, project specific questions
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Q2. Kafka, spark, lambda architecture, testing and WAP architecture
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Q1. Sql joins, window functions
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Q2. EOS kafka, end to flow of project and system architecture, how can i enhance current architecture
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Q1. Data engineering related system design Streaming architecture, scaling , replication, storage guarantees Kafka replay-ability details of partitions Offsets, basically how can you optimize kafka streaming ...read more
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Q2. Asked to draw system architecture on draw.io Why do u want to join this role?
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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. Questions about past job experiance
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Q2. Tell me about your self
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Q3. Why want to swich inn financial analysis role
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Q4. Power BI - DAX, Dashboars , SQL related questions
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Q5. Relate Current JD point by point to tour previous job how it it same
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