Design and implement robust back-end microservices, REST APIs, and databases with optimized performance, security, and scalability. Quality, CI/CD & Security * DevOps & Version Control — Proficiency with Git, build tools (Maven, Gradle), and modern CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins, or Azure DevOps). * Security — Understanding of web application security principles, OAuth2, OpenID Connect, and JWT. * Practical understanding of Large Language Models (LLMs) and experience integrating LLM APIs (OpenAI, Anthropic, Google Gemini, Azure OpenAI) into Java applications (e.g., using Spring AI or LangChain4j). * Awareness of responsible AI principles: data privacy, security, and ethical AI deployment. * Experience with cloud platforms (AWS,
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