Senior Java Developer

Overview

Position: Senior Java Developer

Experience: 2-5 Years

Employment Type: Full-time

Key Responsibilities:

• Design, develop, and maintain scalable, high-performance Java-based applications.
• Write clean, efficient, and reusable code following best practices.
• Collaborate with cross-functional teams to gather and analyze requirements and deliver end-to-end solutions.
• Work on APIs, microservices, and system integrations for seamless communication between applications.
• Optimize application performance, scalability, and reliability.
• Lead troubleshooting and debugging efforts to resolve production issues and improve system stability.
• Contribute to system architecture and design discussions to enhance application performance and maintainability.
• Mentor junior developers and conduct code reviews to ensure high code quality and adherence to standards.

Requirements

Experience: 2-5 years of experience in Java development (internship experience excluded).

Java Development:

• Advanced Java concepts:
• Multithreading and Concurrency (e.g., ExecutorService, CompletableFuture).
• Java Memory Model (JMM) and Garbage Collection tuning.
• Streams API and Functional Programming.
• Reflection API and Dynamic Proxies.
• Java Modules (JPMS).
• Enterprise Java:
• Working with JEE components (Servlets, JSPs, EJBs).
• Java Messaging Service (JMS).
• JavaMail API integration.
• Java Security:
• Secure coding practices.
• Implementation of JWT and OAuth for authentication/authorization.
• SSL/TLS and certificate handling in Java.
• Testing:
• Writing unit tests using JUnit and integration tests with Mockito.
• Performance testing tools like JMeter.

Architecture Design:

• Design Patterns:
• Singleton, Factory, Builder, Strategy, Observer, etc.
• Advanced patterns like CQRS and Event Sourcing.
• Microservices Architecture:
• API Gateway design (e.g., Zuul, Spring Cloud Gateway).
• Inter-service communication with gRPC and REST APIs.
• Distributed transactions using Saga and Eventual Consistency.
• Enterprise Application Architecture:
• Monolithic to Microservices Migration.
• Layered and Hexagonal Architecture.
• Application scaling and load balancing strategies.
• Domain-Driven Design (DDD):
• Aggregate root, bounded context, and entities modeling.
• Integration Patterns:
• Message Queue Integration (e.g., RabbitMQ, Kafka).
• File-based processing and FTP integration.

Apache Tomcat Expertise:

• Tomcat Configuration:
• Customizing server.xml and web.xml.
• Thread pool and connector configurations for performance tuning.
• Deployment and Monitoring:
• WAR and EAR deployments in Tomcat.
• Performance monitoring using tools like VisualVM and JConsole.
• Session Management:
• Sticky sessions and session replication across clusters.
• Security:
• Securing Tomcat with SSL certificates.
• Enabling role-based access and JNDI Realm configuration.
• Logging and Troubleshooting:
• Configuring and customizing logging with Log4j or SLF4J.
• Debugging slow performance or crashes with thread dumps.

BeanShell:

• Introduction to BeanShell:
• Using BeanShell for dynamic scripting in Java applications.
• Embedding BeanShell in enterprise applications.
• Scripting with BeanShell:
• Running Java code snippets dynamically at runtime.
• Prototyping and testing Java logic using BeanShell.
• Integration:
• Integrating BeanShell with Java servlets and applications.
• Using BeanShell for configuration scripting in middleware or plugins.
• Custom Automation:
• Automating admin tasks in web servers or enterprise systems with BeanShell.

Performance Optimization:

• JVM Optimization:
• Tuning JVM options (-Xms, -Xmx, -XX flags).
• Identifying and resolving memory leaks using Java Flight Recorder (JFR).
• Database Performance:
• Query optimization with Hibernate/JPA.
• Connection pooling configuration using HikariCP.
• Code Profiling:
• Profiling tools like YourKit, VisualVM, and JProfiler.

Job Type: Full-time

Pay: ₹1,207,623.23 - ₹2,098,305.47 per year

Benefits:

• Flexible schedule
• Health insurance
• Provident Fund

Location Type:

• In-person

Schedule:

• Day shift
• Fixed shift

Experience:

• Java: 4 years (Required)
• Java Spring Boot: 4 years (Required)

Work Location: In person