Senior Machine Learning Engineer ( TS/TS/SCI Clearance) (McLean)

Senior/Principal Machine Learning Engineers

Active U.S. Secret clearance required to be considered for this role

Working on a high-impact opportunity with a VC-backed start up building A I systems used in real-world national security environments.

You’ll be building and shipping production LLM systems that operate in secure, mission-critical settings.

What you’ll be doing:

• Designing and deploying LLM systems (RAG, embeddings, vector search)
• Building APIs and backend services for AI-powered applications
• Working across the full stack from data pipelines to inference
• Shipping systems into secure, sometimes air-gapped environments

What they’re looking for:

• Strong backend engineering skills (Python and/or JavaScript)
• Experience deploying ML systems into production
• Hands-on with LLMs, vector databases, or agentic workflows
• Comfortable owning systems end-to-end in a fast-moving environment

Requirements:

• Active U.S. Secret clearance (TS/SCI preferred)
• U.S. Citizenship required
• No Sponsorship provided

Location: Washington DC OR Mclean Virginia

Excellent Salary+ meaningful equity