Contractor Senior Java Backend Engineer

• Design, develop, and maintain the Java backend (Spring Boot or similar frameworks).
• Develop and optimize REST APIs to support the Angular frontend and external services.
• Integrate with AI/ML services exposed via REST at a later stage (OpenAI, Ollama, vLLM, Hugging Face, etc.).
• Ensure scalability, performance, and resilience in hybrid architectures (cloud + on-premises).
• Implement secure handling of sensitive data, respecting privacy and compliance requirements (e.g., GDPR).
• Optimize persistence and queries in relational (e.g., PostgreSQL, MySQL) or NoSQL databases.
• Design monitoring, logging, and error-handling mechanisms for production systems.
• Support CI/CD pipelines and contribute to infrastructure automation in AWS.

• 5+ years of professional experience as a Java Backend Engineer.
• Strong proficiency in Java 11+ (preferably 17+) and frameworks like Spring Boot.
• Solid understanding of REST API design and integration.
• Experience with database systems (SQL and/or NoSQL).
• Hands-on experience with cloud environments (AWS preferred).
• Experience consuming and integrating external APIs (REST/JSON).
• Familiarity with microservices architecture and distributed systems.
• Good knowledge of security best practices (authentication, authorization, encryption).
• Ability to mentor and support junior developers.
• Strong problem-solving and debugging skills.

• Experience integrating with AI/ML services (e.g., OpenAI, Ollama).
• Knowledge of Python (for collaboration with AI Engineers).
• Familiarity with Angular (basic knowledge for collaboration with frontend).
• Experience with Docker and Kubernetes.
• Understanding of event-driven architectures (Kafka, RabbitMQ).
• Experience with enterprise deployments (on-premises + offline mode).
• Knowledge of advanced AWS services.

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