AI/ML Engineer (TS/SCI) – LLM & RAG Specialist

B4Corp; McLean (VA); On-site; USD 180,000 - 235,000; Full time

Benefits offered by this job

401k match

Phantom stock

7 weeks PTO

Flexible schedule

Job summary

B4Corp in McLean, VA is seeking AI/ML Engineers to build and maintain AI/ML-enabled applications, focusing on LLM integration, agent-based workflows, and RAG capabilities. Role requires TS/SCI clearance with a polygraph and involves developing REST APIs, Python services, and enterprise data workflows for deployment across systems.

The position emphasizes architecture design, performance optimization, and reliable production-ready software in a defense-focused environment.

Qualifications

• Experience developing AI/ML-enabled applications with LLM integration and agent-based workflows.
• Proficiency with Python, AI libraries, and tool-based LLM development, including orchestration, memory, and external-system integration.
• Strong understanding of AI/ML concepts, transformers, and model integration patterns.
• Experience designing REST APIs, Python services, and PostgreSQL schemas with optimization.

Responsibilities

• Develop, implement, and maintain AI/ML-enabled applications focusing on agent-based workflows and RAG capabilities.
• Design and support agent-based architectures, including orchestration logic, tool use, memory management, and external integrations.
• Implement and maintain RAG pipelines: document processing, embeddings, retrieval, prompt assembly, memory patterns.
• Develop REST APIs and Python-based services to support AI/ML applications and enterprise deployment.
• Model and process structured/unstructured data; refine Postgres schemas; benchmark and optimize performance.

Skills

AI/ML development

LLM integration

agent-based workflows

RAG pipelines

Python

REST APIs

PostgreSQL

transformers

model integration

system integration

Tools

FastAPI/Flask

Docker

AWS

MLflow

PostgreSQL tooling

Job description

B4Corp in McLean, VA is seeking AI/ML Engineers to build and maintain AI/ML-enabled applications, focusing on LLM integration, agent-based workflows, and RAG capabilities. Role requires TS/SCI clearance with a polygraph and involves developing REST APIs, Python services, and enterprise data workflows for deployment across systems.

The position emphasizes architecture design, performance optimization, and reliable production-ready software in a defense-focused environment.