Senior Java AI Engineer: GenAI & RAG Production Lead

J2B Global LLC; Florida; On-site; USD 150,000 - 210,000; Full time

Job summary

J2B Global LLC in Lake Mary, Florida, is seeking a Senior/Lead Java AI Engineer to lead enterprise GenAI and retrieval-augmented generation initiatives on an onsite contract basis. You will design, build, and productionize AI solutions with a focus on accuracy, security, latency, and cost.

You will lead architecture discussions, mentor engineers, and drive the adoption of secure AI practices across teams while integrating with OpenAI and Azure AI services.

Qualifications

• 10+ years of enterprise software or application development experience.
• Strong hands-on experience with Java, Spring Boot, REST APIs, and microservices.
• Hands-on experience delivering LLM-based applications and production GenAI solutions.
• Strong knowledge of system prompts, few-shot prompting, prompt optimization, structured outputs, and context management.
• Experience integrating OpenAI APIs, Azure OpenAI, Azure AI services, or Azure AI Foundry.
• Experience with embeddings, vector search, vector databases, retrieval, grounding, and document processing.
• Ability to integrate and evaluate modern frontier AI models and model APIs.
• Working knowledge of Git, CI/CD, Docker, Kubernetes, and cloud deployment.
• Strong stakeholder communication, architecture, mentoring, and technical decision-making skills.

Responsibilities

• Design and develop enterprise-grade AI applications using Java, Spring Boot, REST APIs, and microservices.
• Integrate LLM and Generative AI capabilities into enterprise applications and business workflows.
• Develop and optimize system prompts, few-shot prompts, reusable prompt templates, structured outputs, and context-management strategies.
• Integrate with OpenAI APIs, Azure OpenAI, Azure AI services, Azure AI Foundry, and other frontier AI model APIs.
• Design and implement RAG solutions using embeddings, vector search, document retrieval, grounding, and citation patterns.
• Evaluate and optimize models and prompts for accuracy, groundedness, latency, scalability, security, and cost.
• Implement AI security controls to mitigate prompt injection, hallucinations, sensitive-data exposure, and unauthorized access.
• Build production-ready logging, tracing, monitoring, observability, fallback, and error-handling mechanisms.
• Lead architecture discussions, code reviews, technical troubleshooting, and production issue resolution.
• Collaborate with business, product, architecture, and engineering stakeholders to move AI solutions from proof of concept to production.
• Mentor engineers and establish reusable standards for secure AI integration and application development.

Skills

Java

Spring Boot

REST APIs

Microservices

LLMs

Prompt engineering

OpenAI APIs

Azure OpenAI

Azure AI services

Azure AI Foundry

Embeddings

Vector search

Documentation

Tools

OpenAI APIs

Azure OpenAI

Azure AI services

Azure AI Foundry

Git

CI/CD

Docker

Kubernetes

Azure DevOps

GitHub

Maven

Gradle

Vector databases

Oracle

SQL

Job description

J2B Global LLC in Lake Mary, Florida, is seeking a Senior/Lead Java AI Engineer to lead enterprise GenAI and retrieval-augmented generation initiatives on an onsite contract basis. You will design, build, and productionize AI solutions with a focus on accuracy, security, latency, and cost.

You will lead architecture discussions, mentor engineers, and drive the adoption of secure AI practices across teams while integrating with OpenAI and Azure AI services.