LLM Ontology Engineer — RAG & Knowledge Graphs

Isys Technologies; Omaha (NE); On-site; USD 110,000 - 170,000; Full time

Job summary

I2X Technologies is seeking a Journeyman LLM Engineer to develop and enhance intelligent applications that combine Large Language Models with formal ontologies and knowledge graphs.

We aim to design solutions, build RAG systems, and create APIs that interact with LLMs and ontology data while ensuring reliability, scalability, and ethical use. US citizenship is required, and TS/SCI clearance is noted.

Qualifications

• 3–6 years of software engineering with a focus on AI/ML or LLM development.
• Solid experience with Java for building scalable back-end services and integrating with LLMs.
• Proficiency in Python and relevant frameworks (LangChain, LlamaIndex, etc.).
• Experience with ontologies, knowledge graphs and semantic technologies.

Responsibilities

• Design and implement solutions that integrate LLMs with ontologies for improved accuracy and reasoning
• Develop Retrieval-Augmented Generation (RAG) systems using ontology-based knowledge
• Build and maintain knowledge graphs and ontologies to support LLM applications
• Fine-tune, prompt engineer, and evaluate LLMs for specific business use cases
• Create APIs and services that allow applications to interact with LLMs and ontology data
• Ensure the reliability, scalability, and ethical use of LLM-powered features
• Collaborate with data scientists, engineers, and domain experts

Skills

LLM development

Java

Python

ontologies

knowledge graphs

Retrieval-Augmented Generation

Git

Tools

LangChain

LlamaIndex

RDF/OWL

Job description

I2X Technologies is seeking a Journeyman LLM Engineer to develop and enhance intelligent applications that combine Large Language Models with formal ontologies and knowledge graphs.

We aim to design solutions, build RAG systems, and create APIs that interact with LLMs and ontology data while ensuring reliability, scalability, and ethical use. US citizenship is required, and TS/SCI clearance is noted.