Java Developer - OOPS/Multithreading

Description :

About the Role :

We are seeking a highly skilled Java Developer to join our engineering team. In this role, you will be responsible for designing, developing, and maintaining high-performance backend systems and microservices. You will work closely with cross-functional teams to build scalable applications, optimize system performance, and deliver robust backend solutions using modern Java technologies. This role is ideal for someone with strong programming fundamentals, hands-on experience in Spring Boot, and a passion for building reliable and efficient applications.

Key Responsibilities :

1. Backend Application Development :

- Design, develop, and maintain scalable backend applications using Java, Spring Boot, and related frameworks.

- Build and deploy microservices-based architectures that improve system modularity, scalability, and performance.

- Write clean, maintainable, and testable code following industry best practices and coding standards.

2. Data Persistence & Database Management :

- Implement and manage data persistence layers using Hibernate/JPA for seamless interaction with relational databases.

- Design efficient database schemas and collaborate with teams to work with MySQL, PostgreSQL, and other relational DBs.

- Write optimized SQL queries and work on performance tuning for database operations.

3. Performance Optimization :

- Apply advanced knowledge of Data Structures and Algorithms to improve application performance and scalability.

- Identify bottlenecks in application logic or database queries and implement effective solutions.

5. Collaboration & Code Quality :

- Collaborate with product managers, QA engineers, DevOps, and other backend developers to deliver high-quality features.

- Conduct code reviews, enforce coding best practices, and mentor junior developers.

- Troubleshoot and resolve complex technical issues in development, testing, and production environments.

Required Skills & Experience :

Core Java & Frameworks :

Strong proficiency in Core Java, including :

- OOP concepts

- Multithreading & concurrency

- Exception handling

- Collections framework

- Generics

- JVM internals

Hands-on experience with:

- Spring Boot, Spring MVC, Spring Security, Spring Data JPA

- Hibernate/JPA

Backend Engineering Skills:

- Proven experience designing and developing RESTful APIs and microservices.

- Solid understanding of software engineering principles, design patterns, and architectural best practices.

Database & Persistence:

- Experience with MySQL, PostgreSQL, and ORM solutions.

- Strong SQL skills, query optimization, and schema design.

Algorithms & Problem Solving:

- Strong foundation in Data Structures and Algorithms for writing optimized, production-grade code.

- Ability to troubleshoot performance issues and solve complex technical problems.

Cloud & DevOps:

- Hands-on experience with AWS services such as EC2, S3, RDS, Lambda, API Gateway, etc.

- Familiar with CI/CD pipelines, Git, Docker, and basic Linux commands.

Other Requirements:

- Excellent analytical and communication skills.

- Ability to work in a collaborative, agile environment.

- Strong attention to detail and commitment to writing high-quality software.

Nice-to-Have:

- Experience with caching systems (Redis, Memcached).

- Knowledge of message brokers (Kafka, RabbitMQ).

- Exposure to container orchestration (Kubernetes).

- Familiarity with testing frameworks (JUnit, Mockito).

- Experience in API documentation tools (Swagger/OpenAPI).