Java L3 Support Specialist

We are seeking an experienced Java L3 Support Specialist to join our team. The ideal candidate should have a strong technical background in designing, developing, and maintaining systems capable of handling high-volume transactions. The role requires proficiency in Java, asynchronous communication, parallel processing, and database management to ensure high availability, scalability, and data integrity.

Key Responsibilities:

System Design & Development:

• Design and optimize systems capable of handling millions of transactions per day using PostgreSQL.
• Ensure high availability, scalability, and data integrity.

Data Management:

• Work with PostgreSQL for complex data operations.
• Implement distributed transactions with consistency and accuracy.

Asynchronous Communication:

• Utilize Kafka topics for asynchronous communication.
• Handle message streams efficiently for parallel processing.

Java Programming:

• Develop and maintain code using Java functional interfaces, Java collections, and parallel processing/multithreading.
• Work with JPA/JDBC for database interactions.

Security & Design Patterns:

• Implement encryption and hashing techniques to secure sensitive data.
• Apply microdesign patterns for scalable and maintainable code.

Troubleshooting & L3 Support:

• Provide Level 3 support, analyzing and resolving complex issues in production.
• Collaborate with cross-functional teams to ensure smooth operations.

Performance Optimization:

• Monitor and optimize system performance to handle large-scale data operations.
• Debug and fine-tune multithreading and parallel processing implementations.

Required Skills & Experience:

• 6+ years of experience in Java development and support.
• Strong expertise in PostgreSQL, Java Collections, JPA/JDBC, and multithreading/parallel processing.
• Hands-on experience with Kafka for asynchronous communication.
• In-depth knowledge of encryption techniques, hashing, and data security best practices.
• Experience with distributed transactions and ensuring high system availability.
• Proficient in implementing functional interfaces and microdesign patterns.
• Familiarity with designing high-volume transaction systems.