GDIT
Posted 1d ago

Senior AI Engineer/Software Developer - TS/SCI with Polygraph

GDIT
Chantilly, Virginia, United States
$164k-$219k/yrOnsiteFull Time
Responsibilities
  • architecting applications
  • deploying models
  • mentoring developers
Requirements
  • Requires active TS/SCI with polygraph
  • 8+ years software development experience
  • 3+ years building or integrating AI/ML
  • Expert Python
  • Another programming language
  • LLM/ML deployment
  • Containers, CI/CD, and data security expertise
Technical tools mentioned
PythonJavaScriptTypeScriptJavaAzure GovernmentAWS GovCloudDockerKubernetesCI/CDLlamaMistralPyTorchMicrosoft Azure

Job description

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

Data Science and Data Engineering

Job Qualifications:

Skills:

Artificial Intelligence (AI), Machine Learning (ML), Python Automation

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

Role Overview
We are seeking a senior AI Engineer to lead the design, development, and secure integration of AI and machine learning capabilities into mission systems operating on classified networks. This is a hands-on technical leadership role: you will establish the architectural patterns, governance alignment, and engineering standards for AI-enabled features across the program, and grow a small team over time. You will work directly with program leadership, government stakeholders, and security/accreditation authorities to deliver AI capabilities that are effective, auditable, and compliant within a high-side environment.

Key Responsibilities

  • Architect, build, and maintain AI-enabled applications and services within air-gapped and government cloud environments
  • Deploy, serve, and tune large language models and ML models on-premises or in accredited cloud enclaves (no external API dependency)
  • Design retrieval-augmented generation (RAG) pipelines and embedding workflows over controlled data sets, with appropriate data handling and classification controls
  • Operationalize the program's AI governance framework: model capability tiering, use-case approval workflow, rules of engagement, and audit/logging requirements
  • Support security accreditation activities, including AO engagement, RMF documentation inputs, and responsible AI evidence
  • Build and optimize data pipelines feeding AI-driven features; integrate with existing program systems and workflows
  • Establish code quality, testing, and documentation standards for the AI engineering function; mentor mid-level developers as the team grows
  • Brief technical approach and results to program leadership and government customers

Required Qualifications

  • Active TS/SCI with polygraph
  • 8+ years of professional software development experience (or 6+ with a relevant advanced degree), including 3+ years building or integrating ML/AI capabilities
  • Expert-level Python; working proficiency in at least one additional language (JavaScript/TypeScript, Java, or similar)
  • Demonstrated experience deploying or serving LLMs or ML models in disconnected, on-premises, or government cloud environments (Azure Government, AWS GovCloud, or equivalent)
  • Practical experience with model inference, embeddings, vector search, and prompt engineering in production systems
  • Experience with containerization (Docker/Kubernetes or equivalent) and CI/CD in restricted environments
  • Strong understanding of data security, classification handling, and responsible AI practices
  • Proven ability to work directly with government customers and translate mission requirements into technical solutions

Preferred Qualifications

  • Experience supporting RMF accreditation or AO engagement for AI/ML systems
  • Familiarity with open-weight model deployment (Llama, Mistral, or similar) and model quantization/optimization for constrained hardware
  • Experience with ML frameworks (PyTorch preferred)
  • Prior work on IC or DoD programs; NRO experience a significant plus
  • Experience standing up or leading a small engineering team


GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

  • Growth: AI-powered career tool that identifies career steps and learning opportunities
  • Support: An internal mobility team focused on helping you achieve your career goals
  • Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
  • Community: Award-winning culture of innovation and a military-friendly workplace


OWN YOUR OPPORTUNITY
Explore a career in program management at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results.

The likely salary range for this position is $164,382 - $218,500. 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.

Scheduled Weekly Hours:

40

Travel Required:

None

Telecommuting Options:

Onsite

Work Location:

USA VA Chantilly

Additional Work Locations:

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 have told us 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

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

About GDIT

Delivers IT and mission services to government agencies.

Year founded
1952
Employees
30000
Organization type
Public
Subsidiaries
Headquarters
US

Similar jobs

AI Engineer/Software Developer roles near Chantilly, Virginia
1d
Save
Mark Applied
Hide
Senior AI Engineer/Software Developer - TS/SCI with Polygraph
Chantilly, Virginia, United States
$164k-$219k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
8+ YOEActive TS/SCI with polygraph, 8+ years software development experience, 3+ years building or integrating AI/ML capabilities, expert Python, additional language, model deployment, containers, CI/CD, and data security expertise.
Artificial Intelligence (AI), Machine Learning (ML), Python, JavaScript, TypeScript, Java, Azure Government, AWS GovCloud, Docker, Kubernetes, CI/CD, Llama, Mistral, PyTorch
2mo
Save
Mark Applied
Hide
Senior Software Engineer/Developer - AI
Fairfax or Washington or United States
$166k-$210k/yr OnsiteFull Time
Pyramid Systems
Pyramid Systems: Provides digital transformation and IT services to federal agencies.
12+ YOEUS citizenship, Bachelor's/Master's in CS or engineering, 12–15+ years software engineering with leadership, 8+ years applied AI/ML, expert Python, cloud (Azure/AWS/GCP) incl. FedRAMP, ML frameworks and MLOps experience; active clearance preferred.
Python, AWS, Azure, GCP, AWS Bedrock, Azure OpenAI Service, Google Vertex AI, RAG, LangChain, LlamaIndex, Semantic Kernel, PyTorch, TensorFlow, JAX, DeepSpeed, FSDP, Horovod, Kubernetes, REST, SOAP, SQL, NoSQL
2d
Save
Mark Applied
Hide
Senior AI Software Engineer-TS/SCI clearances (CI poly preferred)
Herndon or Denver or St. Louis
$155k-$200k/yr OnsiteFull Time
Credence
Credence: Provides technology and management solutions to federal government agencies.
7+ YOETS/SCI clearance required; bachelor's or master's in computer science, AI/ML, or related field; 7+ years software engineering experience; production AI/ML, generative AI, LLM, TypeScript, and Python experience.
Agent2Agent Protocol, Bedrock Agents, Mastra, CrewAI, Strands, AgentCore, LangChain, LangGraph, OpenAI, Anthropic, Gemini, Amazon Bedrock, Google Vertex AI, TypeScript, Nx, Next.js, Vercel AI SDK, Playwright, Jest, Vite, Python, uv, Pydantic, FastAPI, Unstructured, GitLab CI, VS Code, Cline, Claude Code, Terraform, Open Tofu, AWS CDK, CloudFormation, Infrastructure as Code (IaC), CI/CD
4d
Save
Mark Applied
Hide
Senior AI Software Developer
Reston or Washington
OnsiteFull Time
Assured Consulting Solutions
Assured Consulting Solutions: A consulting providing strategic and innovative business, technology, and organizational solutions.
8+ YOEBachelor's degree or equivalent plus 8+ years relevant experience, or high school diploma plus 12+ years; five years in the Intelligence Community, TS/SCI with CI polygraph, U.S. citizenship, and software development expertise.
Model Context Protocol (MCP), LangChain, Granite-Docling, langextract, AWS, HTML, JavaScript, Java, Python, XML, JSON, API, JDBC, RPC, Spring Boot, Apache NiFi, AWS Glue, AWS Lambda, Git, REST APIs, SSL, X.509, OWL, TTL
2w
Save
Mark Applied
Hide
AI Software Engineer-Principal
Annapolis Junction, Maryland, United States
OnsiteFull Time
NetSage
NetSage: Delivering specialized cyber services to the U.S. federal government.
11+ YOETS/SCI+polygraph, degree with extensive experience (e.g., B.S.+11y) in CS or related field; strong AI/ML and software architecture skills; proficiency in Java and Python; experience with LLMs and Jupyter Notebooks.
Java, Python, Jupyter Notebooks, LLMs, Model Context Protocol (MCP)
3w
Save
Mark Applied
Hide
Principal / Sr. Principal AI Software Engineer
Dulles or Colorado Springs or El Segundo
$138k-$258k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOEU.S. citizen with active DoD Top-Secret clearance (ability to obtain SCI/SAP), 5+ years AI engineering experience (level dependent), expertise in ML/RL/SL, strong software engineering and simulation experience.
Python, JAX, PyTorch, C++, CUDA, MATLAB/Simulink, Windows, Linux
1mo
Save
Mark Applied
Hide
Principal AI Software Engineer TS/SCI w/Poly
Fort Meade, Maryland, United States
$200k-$255k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Global provider of engineering, technical, and mission support services.
7+ YOERequires AI/ML expertise, LLM experience, Java or Python, Jupyter Notebooks, TS/SCI with polygraph, and relevant experience based on education: 7–15 years.
Java, Python, Jupyter Notebooks, DNN, RNN, LLM, RAG, MCP
1mo
Save
Mark Applied
Hide
Principal AI Software Engineer TS/SCI w/Poly
Fort Meade, Maryland, United States
$200k-$255k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
11+ YOETS/SCI with poly required; proficiency in AI/ML and LLMs, deep learning techniques, Java and Python, Jupyter Notebooks; advanced degree or extensive relevant experience (see posting).
Java, Python, Jupyter Notebooks, LLM