AI Prompt Engineer

Responsibilities:

• Prompt Design & Optimization: Develop, refine, and iterate on prompts for various generative AI models (LLMs) to elicit desired behaviors, responses, and creative outputs.
• Iterative Testing & Analysis: Conduct testing to compare prompt variations, analyze results drive continuous improvement.
• Collaboration: Work closely with multiple groups to integrate prompts to streamline manual processes.
• Research & Development: Stay abreast of the latest advancements in LLMs, generative AI, and prompt engineering techniques.
• Fine-tuning & RAG Support: Provide input and collaborate on strategies for model fine-tuning and Retrieval Augmented Generation (RAG) to further improve accuracy.
• Problem Solving: Debug unexpected model behaviors, identifying root causes within prompt structure, model limitations, or data context.

Qualifications:

Required: 
Must be a U.S. Citizen with the ability to pass CBP background investigation, criteria include, but not limited to:

• 3-year check for felony convictions
• 1 year check for illegal drug use
• 1 year check for misconduct such as theft or fraud

• Must be available to work onsite in Ashburn, VA and/or Washington, D.C.
• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or related field (equivalent experience may be considered in lieu of degree).
• 1+ years of software development experience, internships, or relevant academic project work.
• 1+ year of hands-on experience working with Large Language Models (e.g., OpenAI GPT series, Llama, Gemini) or other generative AI models.
• Experience with at least one programming language (Python, JavaScript/TypeScript)
• Familiarity with prompt engineering techniques (few-shot, chain-of-thought, structured outputs, function calling)

Desired:

• Problem-solving skills, with a data-driven approach to experimentation and optimization.
• Written and verbal communication skills, with an ability to articulate complex technical concepts clearly.
• Ability to work independently and collaboratively in a fast-paced, evolving environment.
• Exposure to RAG concepts, including embeddings and vector databases
• Understanding of AI safety considerations (e.g., prompt injection, bias, data privacy)
• Exposure to Agile/Scrum development environments

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is: