AI/ML Engineer (TS/SCI with FS Poly)

Job overview

AI/ML Engineer (TS/SCI with FS Poly), onsite, in McLean, VA. The base pay is $137,000.00 - $200,200.00 annually. Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what’s happening now and shape what’s coming next.

What you'll do

• Develop, implement, and maintain AI/ML-enabled applications with a focus on agent-based workflows, LLM integration, and retrieval-augmented generation capabilities.
• Design and support agent-based application architectures, including orchestration logic, tool use, memory management, and integration with external systems.
• Implement and maintain RAG pipelines, including document processing, embedding generation, retrieval configuration, prompt assembly, and response optimization.
• Integrate LLMs into applications using available APIs, AI frameworks, and emerging protocols such as MCP.
• Develop and maintain REST APIs, particularly Python-based services, to support data retrieval, system integration, agent workflows, and application functionality.
• Support full-stack development of production-ready AI applications, including backend services, user-facing components, and enterprise deployment considerations.
• Process, transform, and organize structured and unstructured data to support AI/ML workflows, model interaction, and application performance.
• Design or refine Postgres schemas and data models to improve data organization, query performance, and application scalability.
• Optimize AI-enabled applications for performance, reliability, usability, and maintainability in enterprise environments.

What we're looking for

Education

Bachelor’s degree in computer science or related area of study.

Experience

Bachelor’s degree in computer science or related area of study. Senior Labor Category: Minimum 8 years of experience with a Bachelor’s degree; or 7 years of experience with a Master’s degree; or 6 years of experience with a Doctorate. Active/current TS/SCI with required polygraph. Willingness to work onsite full time. US citizenship required. Proficiency in Python and common data/AI libraries. Experience developing AI/ML applications, including LLM-integrated applications, RAG workflows, or similar retrieval-based capabilities. Experience with agent-based programming concepts, AI frameworks, and tool-based LLM application development. Strong understanding of AI/ML foundational concepts, including transformers, algorithms, LLM behavior, data processing, and model integration patterns. Experience designing, developing, or integrating REST APIs to retrieve, process, or exchange data across systems. Familiarity with production-ready application development practices, including reliability, maintainability, testing, and deployment considerations.

Skills & competencies

ai/ml engineer

ts/sci

fs poly

vantor

mclean va

full time

day shift

$137k-$200k+/yr

onsite

python

llm

rag

agent-based workflows

Benefits & perks

• 401(k) with company match, Mental health resources, Student loan repayment assistance, Adoption reimbursement, Pet insurance

About the employer

Vantor is hiring for this role. Industry: Cut and Sew Apparel Manufacturing (except Contractors). Sector: 31.