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) to build scalable and maintainable systems
• Build and maintain RESTful APIs and integrate with external systems using messaging tools like Kafka or RabbitMQ
• Work with both 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 closely with cross-functional teams to define, design, and ship new features
• Write unit and integration tests to ensure reliability and support CI/CD pipelines using tools like Maven, Gradle, Jenkins, or Azure Pipelines
• Participate in code reviews and contribute to continuous improvement of development practices

Requirements

• 4–6 years of hands-on backend development experience with strong Java proficiency
• Solid understanding of Java fundamentals, including collections, exception handling, and threading
• Proven experience with Spring Boot and/or Quarkus frameworks
• Familiarity with modern software engineering practices: test-driven development, clean code principles, and secure development
• Experience in building distributed systems with microservices architecture
• Exposure to containerization technologies like Docker and Kubernetes is a plus
• Working knowledge of agile development methodologies

Benefits

• Long-term contract via Xenon7 (approved vendor)
• Payments in gross USD on a monthly schedule
• Fully remote
• Dedicated device required (minimum M4 chip or i7 with 32GB RAM)

About the Company

In a world where business landscapes are in constant motion, Xenon7 embraces change, adaptability and innovation as strengths. We are a cooperative practice of AI scientists and business leaders partnering with businesses to harness the power of Artificial Intelligence. Our mission is to empower organizations to confidently tackle AI challenges, leveraging intelligent solutions for new possibilities. We value integrity, collaboration, and excellence, blending expertise from diverse disciplines to solve complex challenges and deliver impactful results for clients.