Isys Technologies

Journeyman LLM + Ontology Software Engineer

Isys Technologies$90K — $120K *
Omaha, NE 68104In-Person
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3–6 years of software engineering experience focusing on AI/ML or LLM development
  • Proficient in Java for scalable back-end service development
  • Strong hands-on experience with Large Language Models
  • Practical experience with ontologies and knowledge graphs
  • Proficient in Python and relevant frameworks like LangChain
  • Experience with vector databases and retrieval systems
  • Solid understanding of software engineering best practices and version control (Git)

Responsibilities

  • Design and implement solutions integrating LLMs with ontologies
  • Develop Retrieval-Augmented Generation (RAG) systems using ontology-based knowledge
  • Build and maintain knowledge graphs and ontologies for LLM applications
  • Fine-tune, prompt engineer, and evaluate LLMs for specific use cases
  • Create APIs and services for application interaction with LLMs and ontology data
  • Ensure reliability, scalability, and ethical use of LLM-powered features
  • Collaborate with data scientists, engineers, and domain experts

Benefits

  • Employees are required to have US Citizenship
  • TS/SCI clearance is mandatory
  • Work in a collaborative team environment
  • Engage in cutting-edge AI and LLM projects
  • Opportunity to enhance skills in emerging technologies
Full Job Description
Minimum Clearance Required
TS/SCI Responsibilities

Job Description: Journeyman LLM + Ontology Software Engineer

I2X Technologies is seeking a Journeyman Journeyman LLM Engineer:

Job Summary:  We are looking for a Journeyman LLM Engineer to develop and enhance intelligent applications that combine Large Language Models (LLMs) with formal ontologies and knowledge graphs.

 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

 

Qualifications

Requirements:

  • 3–6 years of experience in software engineering with a focus on AI/ML or LLM development
  • Solid experience and proficiency with Java for building scalable back-end services and integrating with LLMs
  • Strong hands-on experience working with Large Language Models
  • Practical experience with ontologies, knowledge graphs (RDF, OWL, or similar), and semantic technologies
  • Proficiency in Python and relevant frameworks (LangChain, LlamaIndex, etc.)
  • Experience with vector databases and retrieval systems
  • Solid understanding of software engineering best practices and version control (Git)

Preferred or Desirable to have:

  • Experience in ontology modeling or semantic web technologies
  • Knowledge of graph databases (Neo4j, GraphDB, etc.)
  • Familiarity with evaluation frameworks for LLMs
  • Experience with cloud platforms (AWS, Azure, or GCP)

 

Essential Requirements:

US Citizenship is required.

Clearance: TS/SCI

 

In compliance with Colorado’s Equal Pay for Equal Work Act, the annual base salary range for this position is listed . Please note that the salary information is a general guideline only. I2X Technologies considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.

 

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job with or without reasonable accommodation.

 

While performing the duties of this job, the employee will regularly sit, walk, stand and climb stairs and steps. May require walking long distance from parking to work station. Occasionally, movement that requires twisting at the neck and/or trunk more than the average person, squatting/ stooping/kneeling, reaching above the head, and forward motion will be required. The employee will continuously be required to repeat the same hand, arm, or finger motion many times. Manual and finger dexterity are essential to this position. Specific vision abilities required by this job include close, distance, depth perception and telling differences among colors. The employee must be able to communicate through speech with clients and public. Hearing requirements include conversation in both quiet and noisy environments. Lifting may require floor to waist, waist to shoulder, or shoulder to overhead movement of up to 20 pounds. This position demands tolerance for various levels of mental stress.

 

About Isys Technologies

ISYS Technologies is an information technology services company that provides engineering, integration, and sustainment services to government and commercial clients. ISYS Technologies is headquartered in Colorado and has offices in Virginia, Maryland, and Washington. ISYS Technologies' services include systems engineering, software development, cybersecurity, and data analytics. ISYS Technologies' clients come from a variety of industries, including aerospace, defense, and intelligence. ISYS Technologies was founded in 2004 and has grown to become one of the fastest-growing companies in the United States.
Learn more about Isys Technologies
Size
650 employees
Industry
Net Income
$5 million
Founded
2004
5 Year Trend
+50%
Revenue
$100 million

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