Machine Learning Engineer - TS/SCI with Polygraph

General Dynamics Information Technology (GDIT); McLean (VA); On-site; USD 168,000 - 228,000; Full time

Benefits offered by this job

401K with company match

Comprehensive health and wellness

Internal mobility

Paid education and certifications

Cutting-edge technology

Paid vacation and holidays

Job summary

General Dynamics Information Technology (GDIT) is seeking an Artificial Intelligence and Machine Learning Engineer to develop and optimize large language models and NLP solutions for intelligence workflows. The role requires 8+ years of experience, Python proficiency, and TS/SCI with Polygraph, with on-site work in McLean, VA.

You will work with PyTorch, TensorFlow, Keras, Hugging Face Transformers, ONNX, and Flask, and contribute to data analysis, model evaluation, and visualization using

Qualifications

• Bachelor or Master’s Degree in an IT discipline or equivalent.
• 8+ years of related experience.
• Experience with modern deep learning frameworks such as PyTorch, TensorFlow, or Keras.
• Hands-on experience using GPUs for accelerated computing.
• 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 using CTEs, set operations, aggregates and nested subqueries.
• Experience using version control tools such as GitHub and Jenkins.
• Security Clearance TS/SCI with Polygraph
• Location: McLean, VA On Customer Site
• Experience with Hugging Face Transformers and its model hub
• Experience with cloud-based development and architecture
• Experience with Flask or similar frameworks
• Ability to build text-focused ML solutions using scikit-learn or DL approaches
• Experience for semantic search
• Proficiency creating dashboards and visualizations in Tableau
• Ability to communicate modeling decisions clearly to technical and non-technical audiences
• Experience building or using verification and validation test benches
• Familiarity with Explainable AI (XAI) techniques
• Experience with ONNX (Open Neural Network Exchange)
• US Citizenship Required

Responsibilities

• Develop and adapt Large Language Models (LLMs) and NLP methodologies using AI/ML frameworks to improve analytic workflows and address key intelligence questions.
• Collaborate to deploy AI models on GPU-accelerated platforms and optimize performance.
• Tune neural networks on domain-specific datasets and evaluate model results.
• Build and evaluate AI/ML models and ensembles, selecting Python libraries and preparing data.
• Create dashboards or visualizations to communicate insights.

Skills

PyTorch

TensorFlow

Keras

Language Models

Python

SQL

GitHub

Jenkins

Hugging Face Transformers

ONNX

Flask

Tableau

GPU acceleration

Education

Bachelor or Master’s Degree in IT or related field

Tools

GitHub

Jenkins

Flask

Tableau

Hugging Face Transformers

ONNX

Job description

Req ID: RQ229011

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: None

Public Trust/Other Required: None

Job Family: Data Science and Data Engineering

Skills:

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

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

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

• Technical skills:

• Professional or academic experience working with modern deep learning frameworks such as PyTorch, TensorFlow, or Keras. (Key Experience)

• Hands‑on experience using GPUs for accelerated computing. (Key Experience)

• 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 GitHub and Jenkins.

• Security Clearance Level: TS/SCI with Polygraph

• Location: McLean, VA, On Customer Site

• Skills and abilities desired:

• Experience working with Hugging Face Transformers and its model hub.

• 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 SciKit‑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

#OpportunityOwned

#GDITCareers

#WeAreGDIT

#JET

#GDITEnhanced2026

#VA_2026Alumni

The likely salary range for this position is $168,300 - $227,700. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post‑tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long‑term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees are told they value most.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at https://gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans