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TEKsystems
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A linked list is a linear data structure where elements are stored in nodes, each pointing to the next node.
A linked list consists of nodes, where each node contains data and a reference to the next node.
Types of linked lists include singly linked lists, doubly linked lists, and circular linked lists.
Example of a singly linked list: Node1 -> Node2 -> Node3 -> NULL.
In a doubly linked list, each node has re...
Interfaces define contracts for classes, enabling polymorphism and promoting loose coupling in software design.
1. **Polymorphism**: Interfaces allow different classes to be treated as the same type. For example, both 'Dog' and 'Cat' can implement an 'Animal' interface.
2. **Loose Coupling**: By programming to an interface rather than a concrete class, systems become more flexible and easier to maintain.
3. **Multipl...
I often face challenges like tight deadlines, communication issues, and adapting to new technologies in software development.
Tight deadlines can lead to stress; for example, delivering a project in two weeks instead of a month.
Communication issues arise when team members are remote, making it hard to align on project goals.
Adapting to new technologies can be daunting; for instance, learning a new framework in a sh...
JUnit is a popular framework for writing and running unit tests in Java, ensuring code reliability and correctness.
JUnit annotations: Use @Test to indicate a test method.
Assertions: Use assertEquals(expected, actual) to verify outcomes.
Setup and teardown: Use @Before and @After for initializing and cleaning up resources.
Parameterized tests: Use @RunWith(Parameterized.class) for testing multiple inputs.
What people are saying about TEKsystems
SOA is a design pattern where components are designed to communicate via services, while microservices is an architectural style where an application is composed of small, independent services.
SOA focuses on reusability and interoperability of services
Microservices focuses on breaking down an application into small, independent services
SOA typically uses a centralized ESB for communication
Microservices communicate...
Understanding basic data structures and algorithms is crucial for coding interviews.
Data Structures: Arrays, Linked Lists, Stacks, Queues, Trees, Graphs.
Algorithms: Sorting (e.g., Quick Sort, Merge Sort), Searching (e.g., Binary Search).
Complexity Analysis: Big O notation to evaluate performance.
Example: Use a stack to reverse a string efficiently.
Iterate through the array and return the index of the first occurrence of 1.
Iterate through the array using a loop.
Check each element of the array, if it is 1 then return its index.
If no 1 is found, return -1.
Design and code a REST API for a software developer interview.
Define the endpoints and HTTP methods for the API (e.g. GET /users, POST /users)
Implement authentication and authorization mechanisms (e.g. JWT tokens)
Use proper status codes for responses (e.g. 200 OK, 401 Unauthorized)
Include error handling and validation for input data
Document the API using tools like Swagger or OpenAPI
Calculate word frequency using Stream API and lambda expressions
Use Stream API to convert array of strings to stream
Use Collectors.groupingBy to group words by their frequency
Use Collectors.counting to count the occurrences of each word
Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.
Spring Boot eliminates the need for manual configuration by providing defaults for most settings.
It allows for the creation of stand-alone, production-grade Spring-based applications.
Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.
It promotes conve...
As an AML Analyst, I monitored transactions, conducted investigations, and ensured compliance with regulations to prevent money laundering.
Monitored daily transactions for suspicious activities, using software tools to flag anomalies.
Conducted thorough investigations into flagged transactions, gathering evidence and documenting findings.
Collaborated with law enforcement and regulatory agencies to report suspicious acti...
As an AML Analyst, I monitor transactions, assess risks, and ensure compliance with regulations to prevent money laundering activities.
Conduct thorough transaction monitoring to identify suspicious activities, such as large cash deposits or rapid movement of funds.
Perform risk assessments on clients and transactions, using tools like risk scoring to prioritize investigations.
Prepare detailed reports on findings and esc...
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in Jul 2024. There were 3 interview rounds.
I have worked with a variety of technologies including Java, Python, SQL, AWS, Docker, and Kubernetes.
Java
Python
SQL
AWS
Docker
Kubernetes
I have extensive experience in handling complex software products and have successfully led teams to deliver high-quality solutions.
Led a team to successfully launch a new product feature within tight deadlines
Managed the development of a large-scale software product from conception to release
Collaborated with cross-functional teams to ensure product requirements were met
Implemented agile methodologies to improve produ...
I appeared for an interview in Sep 2024.
As a Sr. Tech Lead, I oversee project development, guide teams, and ensure technical excellence in solutions.
Lead a team of developers, providing mentorship and guidance on best practices.
Architect and design scalable software solutions, such as a microservices architecture for a large e-commerce platform.
Collaborate with cross-functional teams, including product management and QA, to define project requirements and ti...
Design and code a REST API for a software developer interview.
Define the endpoints and HTTP methods for the API (e.g. GET /users, POST /users)
Implement authentication and authorization mechanisms (e.g. JWT tokens)
Use proper status codes for responses (e.g. 200 OK, 401 Unauthorized)
Include error handling and validation for input data
Document the API using tools like Swagger or OpenAPI
Calculate word frequency using Stream API and lambda expressions
Use Stream API to convert array of strings to stream
Use Collectors.groupingBy to group words by their frequency
Use Collectors.counting to count the occurrences of each word
I appeared for an interview in Aug 2024.
I appeared for an interview in May 2025, where I was asked the following questions.
I appeared for an interview in Sep 2024.
I appeared for an interview in May 2025, where I was asked the following questions.
The duration of TEKsystems interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 135 interview experiences
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