Senior AI Engineer: Secure Enterprise AI & LLMs (Secret)

Expression; Arlington (VA); On-site; USD 190,000 - 240,000; Full time

Benefits offered by this job

401k matching

PPO and HDHP medical/dental/vision

Education reimbursement up to $10,000/

Complimentary life insurance

Generous PTO and 11 holiday leave days

Commuter Benefits Plan

Job summary

Expression Networks is seeking Senior AI Engineers to design, develop, integrate, and evaluate advanced AI and LLM capabilities supporting the Department of Homeland Security in a DHS enterprise environment. Location is Shirlington, VA with a secret clearance required for eligibility for TS/SCI and collaboration with Government stakeholders.

The role emphasizes multi-agent orchestration, RAG-focused development, AI assurance, and observability, with hands-on Python, FastAPI, and modern

Qualifications

• Bachelor’s degree or equivalent professional experience.
• 9+ years of professional experience in software or AI engineering including hands-on enterprise AI work.
• Experience building, deploying, or evaluating LLM-powered solutions in enterprise environments with implementation responsibility.
• Strong Python programming and debugging skills including RESTful APIs, asynchronous programming, modular design, and automated testing; experience with FastAPI, Pydantic, asyncio.
• Hands-on expertise in at least one specialization: Multi-Agent Orchestration & Model Integration; Grounded AI Applications & RAG; AI Assurance, Evaluation & Observability.
• Experience integrating AI applications with enterprise data platforms and secure data access.
• Experience designing and implementing secure AI applications (authentication/authorization, data access controls).
• Experience with LLM evaluation, reliability, factual grounding, and error handling.
• Experience with Git, CI/CD, testing, and software configuration management.
• Experience deploying cloud-native or containerized apps (Docker, AWS, Azure, Kubernetes).
• Ability translate requirements into production AI components and documentation.
• Strong analytical, troubleshooting, and communication skills.

Responsibilities

• Design, develop, integrate, and evaluate enterprise AI capabilities for DHS.
• Collaborate with AI architects, data engineers, and government stakeholders to test production-quality AI solutions.
• Develop secure, reliable, and maintainable software within an enterprise environment.

Skills

Python programming

FastAPI

Asyncio

Multi-agent orchestration

RAG

AI evaluation

Education

Bachelor's degree in CS/Engineering/Data Science/AI

Tools

LangGraph

LangChain

Semantic Kernel

AutoGen

Job description

Expression Networks is seeking Senior AI Engineers to design, develop, integrate, and evaluate advanced AI and LLM capabilities supporting the Department of Homeland Security in a DHS enterprise environment. Location is Shirlington, VA with a secret clearance required for eligibility for TS/SCI and collaboration with Government stakeholders.

The role emphasizes multi-agent orchestration, RAG-focused development, AI assurance, and observability, with hands-on Python, FastAPI, and modern