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Applications open Full-Time Job

Java Developer

Whitefield Careers

  • Bengaluru, India
  • Competitive Package
  • 3-7 Years
  • Posted Today
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About the role

Position - Java Developer

Location - Bangalore

Experience : 3-7 years of experience

Job Summary

We are looking for a highly skilled Java Developer with 3-7 years of hands-on experience in designing, developing, and

deploying scalable backend systems. The ideal candidate should be an excellent coder with a strong foundation in Core

Java, Data Structures, Algorithms, and Microservices Architecture.

Key Responsibilities

Design, develop, and maintain robust Java applications using Spring Boot and Microservices.

Design, develop, and maintain scalable microservices and backend systems using Java and Spring Boot.

Work on end-to-end development, including requirement analysis, design, implementation, testing, and

deployment.

Build and consume RESTful APIs for efficient system integrations.

Implement robust solutions using Kafka for real-time data streaming and asynchronous communication.

Build and integrate RESTful APIs for seamless communication across services.

Develop and deploy containerized applications using Docker and Kubernetes.

Qualifications

Bachelor's degree in Computer Science, B.Tech, M.Tech, B.E, MCA.

Proven experience in software development with a strong focus on system design.

Strong problem-solving skills and attention to detail.

Excellent communication skills, both verbal and written.

Key Attributes

Strong coding and analytical mindset.

Ability to take complete ownership of tasks and deliver high-quality solutions.

Excellent communication and collaboration skills.

Eligibility & process

Who can apply

Employment type: Full-time

Skills & stack

Java Spring Boot REST APIs Microservices Docker Kubernetes Apache Kafka Data Structures & Algorithms

Selection process

Details are shared by the recruiter after shortlisting.

Prep kit

20 resources
Study material 4
Company-specific guides 4
Likely coding questions 4
Round-wise strategy 4
Round 1: Online Assessment (OA) Aptitude, Quantitative Logic & 2 Coding Problems Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1 Core Tech Stack (Java, Spring Boot, REST APIs, Microservices, Docker, Kubernetes, Apache Kafka, Data Structures & Algorithms) & Live Code Tracing Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving Database Schemas, APIs & Architecture Basics Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion Whitefield Careers Core Values, Learning Agility & Offer Terms Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
Explain OOP (Object-Oriented Programming) principles with real-world examples in Java. Answer
Model answer: 1. Encapsulation (data hiding via private fields/getters). 2. Abstraction (hiding implementation complexity). 3. Inheritance (code reusability). 4. Polymorphism (method overriding/overloading).
What is the time and space complexity of QuickSort vs MergeSort? Answer
Model answer: QuickSort: Average O(N log N) time, O(log N) space. Worst O(N^2). MergeSort: Guaranteed O(N log N) time, but requires O(N) auxiliary space.
Explain the difference between SQL Indexing (B-Tree vs Hash) and when not to use an index. Answer
Model answer: Indexes speed up SELECT queries via B-Trees. However, they slow down INSERT, UPDATE, and DELETE operations because indexes must be updated on disk. Avoid on low-cardinality columns (e.g., boolean flags).
What happens under the hood when you enter a URL in a browser? Answer
Model answer: 1. DNS lookup (resolves IP). 2. TCP 3-way handshake (SYN, SYN-ACK, ACK). 3. TLS negotiation for HTTPS. 4. HTTP GET request sent. 5. Server responds with HTML/CSS/JS. 6. Browser renders DOM & CSSOM tree.
What is the difference between REST and GraphQL APIs? Answer
Model answer: REST uses multiple fixed endpoints with possible over/under-fetching. GraphQL uses a single endpoint allowing clients to query exact fields in a single request.
Behavioural & HR questions 3
Why do you want to join Whitefield Careers as a Java Developer?
Highlight Whitefield Careers's market reputation, recent tech innovations, and how your skills in Java directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Whitefield Careers Competitive Package
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