Applied AI Engineer

Twenty is a company focused on developing technologies that protect democracies worldwide. They are seeking a mid-level Applied AI Engineer to build and deploy language models for enhancing their cyber capabilities, working on mission-critical solutions for U.S. national security.

Responsibilities:

• Create, clean, and maintain high-quality training and evaluation datasets
• Fine-tune language models ranging from small specialized models to medium foundation models
• Develop and optimize model serving infrastructure for production environments
• Develop retrieval-augmented generation (RAG) systems to enhance LLM capabilities with external knowledge
• Implement prompt engineering strategies to optimize model outputs for specific applications
• Integrate AI capabilities into applications using frameworks like LangChain and CrewAI
• Design and implement evaluation frameworks to measure model performance
• Collaborate with cross-functional teams to identify use cases where AI can add business value
• Create technical documentation for AI systems and processes