ECS is seeking a Senior Java Full Stack AI Engineer to work in our Memphis, TN office. ECS is seeking a highly skilled and motivated Senior Java Full Stack AI Engineer to support our USPS client. The candidate will enhance enterprise services and solutions for USPS, as part of an integrated evaluation, integration, strategy, design, implementation, and operational maintenance program. Participates in the design, development, and implementation of software engineering activities. Responsible for the development of components of many analytical tasks and activities. Establishes input/output processes and defining parameters for interfacing with external production systems and the implementation of system design. Must be able to provide and communicate technology solutions across technical, managerial and customer audiences. Responsible for the resolution process for problems where troubleshooting requires an in-depth understanding and evaluation of system processes. Exercises judgment through understanding of software engineering best practices in selecting methods, techniques, and evaluation criterion for obtaining results. This role bridges traditional applications with modern AI-driven data workflows, ensuring our systems are scalable, secure, and ready for intelligent automation. As this role will involve supporting rapidly evolving AI/ML projects and use cases, the candidate must have experience in any of the following areas: NLP, data provenance, LLMs/RAG, or deep learning.