Senior Java Engineer (Remote)

Responsibilities

• Design and develop robust backend services using Java (Java 21 preferred) and frameworks such as Spring Boot or Quarkus
• Apply OOP principles, design patterns (e.g., Singleton, Factory, Strategy), and clean architecture practices (MVC, layered architecture)
• Build and maintain RESTful APIs and integrate with external systems using messaging tools like Kafka or RabbitMQ
• Work with relational and non-relational databases (e.g., PostgreSQL, Oracle, MongoDB) and manage data persistence using JPA
• Leverage caching mechanisms and multithreading to optimize application performance
• Collaborate with cross-functional teams to define, design, and ship new features
• Write unit and integration tests to ensure reliability and support CI/CD pipelines (Maven, Gradle, Jenkins, Azure Pipelines)
• Participate in code reviews and continuous improvement of development practices

Requirements

• 4–6 years hands-on backend development experience with strong Java proficiency
• Solid grasp of Java fundamentals (collections, exception handling, threading)
• Proven experience with Spring Boot and/or Quarkus
• Familiarity with TDD, clean code principles, and secure development
• Experience building distributed systems with microservices architecture
• Exposure to Docker and Kubernetes is a plus
• Working knowledge of agile methodologies

Benefits

• Fully remote work
• Long-term contract via Xenon7 (approved vendor)
• Competitive monthly payments in gross USD

About the Company

In a world where business landscapes are in constant motion, Xenon7 embraces change, adaptability, and innovation. As a cooperative practice of AI scientists and business leaders, we partner with organizations to harness the power of artificial intelligence. Our mission is to empower businesses to navigate AI complexity with confidence, leveraging intelligent solutions for transformative results. Integrity, collaboration, and the pursuit of excellence guide our approach, driving continuous improvement and tangible results for our clients.