Senior Java Backend Developer – Remote

Job Description

We are seeking an experienced Senior Java Backend Developer to design, develop, enhance, and support real-time Java applications for a high-performance enterprise platform.

The ideal candidate will have strong hands-on experience with Core Java, J2EE, Spring/Spring Boot, JMS, Kafka, multithreading, Oracle, PL/SQL, application performance tuning, and production troubleshooting.

Responsibilities

• Design and develop real-time Java applications.
• Design and develop asynchronous, message-based applications.
• Integrate applications with third-party feed providers for accessing real-time data.
• Develop applications meeting high availability, scalability, security, auditing, and other non-functional requirements.
• Participate in coding, testing, debugging, and documentation activities.
• Respond to critical production issues and provide immediate workarounds to maintain business continuity.
• Work on new initiatives while supporting existing applications.
• Perform application and system performance tuning.
• Troubleshoot application and system performance issues.
• Apply object-oriented programming concepts and design patterns.
• Integrate in-house applications with various vendor software platforms.
• Perform unit testing and resolve application defects.
• Interface with databases to extract information and build reports.
• Collaborate effectively with customers, business users, and IT teams.

Required Qualifications

• 10–12 years of IT experience in application development and support.
• Strong hands-on experience with Core Java, J2EE, JMS, multithreading, and Spring Framework.
• Strong understanding of JVM architecture and garbage collection algorithms.
• Strong understanding of:
• Thread lifecycle and synchronization
• Executor Framework and thread pools
• Java Collections internals
• Java memory management and memory leaks
• Strong understanding of Spring Boot architecture.
• Experience with microservices architecture and patterns.
• Strong experience with complex PL/SQL development.
• Strong experience with SQL and query tuning.
• Strong experience troubleshooting real-world production issues.
• Experience identifying performance bottlenecks and implementing remediation.
• Strong experience with JMS, including broker configuration, tuning, and failover.
• Strong experience with Kafka.
• Experience working in an Oracle Database environment.
• Experience deploying Java/J2EE applications on Tomcat or other application servers.
• Experience with Hibernate or other ORM technologies.
• Experience using source control systems, system tools, utilities, and third-party products.
• Basic networking knowledge.
• Experience with Unix/Linux scripting.
• Strong understanding of error handling and resilience patterns.
• Excellent verbal and written communication skills.

Preferred Qualifications

• Experience developing real-time or high-volume applications.
• Experience working with real-time data feeds.
• Experience integrating applications with external data/feed providers.
• Experience supporting mission-critical production applications.
• Experience with performance-sensitive or highly available systems.