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Machine Learning Engineer - TS​/SCI Polygraph

Job in McLean, Fairfax County, Virginia, USA
Listing for: General Dynamics Information Technology, Inc.
Full Time position
Listed on 2026-10-04
Job specializations:
  • IT/Tech
    Machine Learning/ ML Engineer, AI Engineer (Applied/Software)
Salary/Wage Range or Industry Benchmark: 168300 - 227700 USD Yearly USD 168300.00 227700.00 YEAR
Job Description & How to Apply Below

Type of

Requisition :
Regular Clearance Level Must Currently Possess:
Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain:
None Public Trust/Other

Required:

None Job Family:
Data Science and Data Engineering

Job Qualifications:

Skills:

Artificial Intelligence (AI), Keras, Language Models, PyTorch, Tensorflow

Certifications:

None

Experience:

8 + years of related experience US Citizenship

Required:

Yes

Seize your opportunity to make a personal impact as an Artificial Intelligence and Machine Learning Engineer. GDIT is your place to make meaningful contributions to challenging projects and grow a rewarding career. At GDIT, people are our differentiator. As a Machine Learning Engineer, you will help ensure today is safe and tomorrow is smarter.

HOW A MACHINE LEARNING ENGINEER WILL MAKE AN IMPACT

Develop and adapt Large Language Models (LLM) and Natural Language Processing (NLP) methodologies using artificial intelligence and machine learning (AI/ML) frameworks and programming languages to create new capabilities to improve analytic workflows and address key intelligence questions.

WHAT YOU'LL NEED TO SUCCEED

Education:

Bachelor or Master's Degree in an IT discipline or the equivalent combination of education, technical certifications or training, or work experience

Experience:

8+ years

  • Professional or academic experience working with modern deep learning frameworks such as PyTorch, Tensor Flow, or Keras. (Key Experience)
  • Hands-on experience using GPUs for accelerated computing. (Key Experience)
  • Professional or academic experience in testing, evaluating, or validating the performance of AI systems (with a focus on LLM-based systems (Key experience)
  • Professional or academic experience in experiment design and execution to test the performance of LLMs against a benchmark. (Key exeperience)
  • Experience tuning neural networks (including LLMs) on custom datasets and applying them to specific use cases.
  • Experience building AI/ML models and ensembles, selecting appropriate Python libraries, preparing data, performing analyses, and evaluating model performance.
  • Proficiency in Python or R
  • Solid SQL skills, including working with to include using common table expressions, set operations, aggregated functions and nested subqueries.
  • Experience using version control tools such as Git Hub and Jenkins.
Security Clearance Level

Security Clearance Level: TS/SCI with Polygraph

Skills and abilities

desired
  • Experience working with Hugging Face Transformers and its model hub.
  • Demonstrated professional or academic experience in the development of benchmarks to measure LLM performance. (Key experience)
  • Experience with cloud-based development and architecture.
  • Experience with front-end or application frameworks like Flask.
  • Ability to build text-focused machine learning solutions (classification, topic modeling) using Sci Kit-Learn or deep-learning approaches.
  • Experience developing applications for semantic search.
  • Proficiency creating dashboards and visualizations in Tableau.
  • Ability to communicate modeling decisions, methodologies, and results clearly to technical and non-technical audiences.
  • Experience building or using verification and validation test benches.
  • Familiarity with Explainable AI (XAI) techniques.
  • Experience working with ONNX (Open Neural Network Exchange).

US Citizenship Required

GDIT IS YOUR PLACE:
  • 401K with company match
  • Comprehensive health and wellness packages
  • Internal mobility team dedicated to helping you own your career
  • Professional growth opportunities including paid education and certifications
  • Cutting-edge technology you can learn from
  • Rest and recharge with paid vacation and holidays

The likely salary range for this position is $168,300 - $227,700. This is not, however, a guarantee of compensation or salary. Rather,…

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