Software Developer

Role & responsibilities

Java Spring Boot Microservices Developer 5+ Years Experience

Job Description

We are looking for an experienced Java Backend Developer with 5+ years of hands-on experience in Java, Spring Boot, Microservices, Object-Oriented Programming, and Data Structures & Algorithms.

The candidate should have strong experience designing, developing, testing, and maintaining scalable backend applications and microservices.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java and Spring Boot.
• Develop and integrate RESTful APIs and Microservices.
• Apply strong OOP principles, SOLID principles, and design patterns to build maintainable applications.
• Work with Data Structures and Algorithms to develop efficient and optimized solutions.
• Design and implement database schemas, queries, and data-access layers.
• Troubleshoot production issues, perform root-cause analysis, and implement permanent fixes.
• Write clean, reusable, testable, and maintainable code.
• Perform code reviews and contribute to engineering best practices.
• Collaborate with frontend developers, QA engineers, DevOps teams, architects, and product teams.
• Participate in system design and technical discussions for scalable distributed systems.
• Implement unit and integration testing and maintain good test coverage.
• Monitor application performance and identify opportunities for optimization.

Required Technical Skills

Core Java

• Java 8/11/17+
• OOP concepts
• Collections Framework
• Exception Handling
• Generics
• Multithreading and Concurrency
• Java Streams and Lambda Expressions
• Functional Interfaces
• JVM fundamentals
• Memory management and Garbage Collection

Data Structures & Algorithms

• Arrays and Strings
• Linked Lists
• Stack and Queue
• HashMap/HashSet
• Trees and Binary Search Trees
• Heaps
• Graphs
• Recursion and Backtracking
• Sorting and Searching
• Dynamic Programming
• Time and Space Complexity

Spring / Spring Boot

• Spring Core
• Dependency Injection / IoC
• Spring Boot
• Spring MVC
• Spring Data JPA
• Spring Security
• REST APIs
• Exception handling
• Validation
• Actuator
• Configuration and Profiles

Microservices

• Microservices architecture
• Service-to-service communication
• REST APIs
• API Gateway
• Service Discovery
• Circuit Breaker
• Resilience patterns
• Distributed transactions
• Logging and monitoring
• Authentication and authorization
• Fault tolerance and scalability

Database

• SQL
• MySQL / PostgreSQL / Oracle
• Joins, indexes, views, stored procedures
• Query optimization
• Transactions and ACID
• JPA/Hibernate
• Basic knowledge of NoSQL databases such as MongoDB/Redis

Messaging & Cloud

• Kafka or RabbitMQ
• Docker
• Kubernetes basics
• CI/CD concepts
• AWS/Azure/GCP fundamentals

Testing & Tools

• JUnit
• Mockito
• Maven/Gradle
• Git
• Postman
• SonarQube
• Jenkins/GitHub Actions

Good to Have

• System Design experience
• Design Patterns
• SOLID principles
• Event-driven architecture
• Distributed systems
• Redis caching
• Cloud-native application development
• Kubernetes
• Observability using tools such as Prometheus/Grafana

Experience

• 5+ years of professional software development experience.
• Strong hands-on experience in Java and Spring Boot.
• Experience building and supporting production-grade Microservices.
• Strong understanding of DSA, OOP, database concepts, and system design.
• Experience working in Agile/Scrum development environments.

Interview Focus Areas

Candidates should be prepared for questions on:

1. Core Java & OOP
2. Collections and Java 8+ features
3. Multithreading and concurrency
4. DSA and coding problems
5. Spring Boot
6. REST API design
7. Microservices architecture
8. Kafka/messaging
9. SQL and database optimization
10. System design
11. Design patterns and SOLID principles
12. Real-world production/debugging scenarios

Preferred candidate profile

Perks and benefits