Junior GenAI Developer Intern

The Opportunity

We're seeking a Junior GenAI Developer Intern passionate about creating and delivering AI-driven solutions. This role involves crafting effective prompts, integrating models, building evaluation frameworks, and implementing safety guardrails. You'll collaborate closely with senior engineers and product managers to prototype, refine, and deploy GenAI capabilities that make a real difference for CACI International Inc customers.

Responsibilities

• Prototype and integrate LLMs (OpenAI, Azure OpenAI, Anthropic, etc.) into web services, apps, and workflows.
• Support the design and development of intelligent chatbots and autonomous agents using cutting-edge GenAI technologies for content analysis, content gap identification, and summarization.
• Implement and optimize RAG (Retrieval Augmented Generation) systems for accurate information retrieval and contextual responses.
• Write prompt chains, system prompts, and structured outputs (JSON/XML/Markdown) for reliable responses.
• Build evaluation harnesses including test sets, metrics, and A/B experiments.
• Develop, manage, and deploy intelligent AI agents with knowledge retrieval (RAG) and interaction with external APIs, databases, and applications.
• Develop connectors and RAG pipelines; use open-source platforms for debugging, testing, and monitoring generative AI applications.
• Implement guardrails and safety measures (content and safety filters, PII scrubbing, hallucination detection, policy enforcement).
• Contribute to backend services (Python/TypeScript) and micro-APIs to operationalize AI features.
• Write observability hooks: logging, tracing, prompt/version tracking, feedback loops.
• Collaborate on model selection and cost/performance tradeoffs (latency, throughput, token cost, quality).
• Document prompt patterns, playbooks, and API usage; share learnings in reviews/demos.

Qualifications

Required:

• Bachelor’s in CS/Engineering or equivalent experience (internships count).
• 0–2 years building software (internships count).
• Hands-on experience with at least one: Python (FastAPI, Flask) or TypeScript/Node (Express, Next.js).
• Familiarity with LLM APIs (OpenAI/Azure OpenAI/Anthropic) and prompt engineering basics.
• Experience with Git, RESTAPIs, and CI/CD concepts.
• Basic knowledge of cloud (AWS desired, Azure acceptable) and containers (Docker).
• Strong communication and curiosity.
• Must be legally authorized to work in the United States without employer sponsorship.

Desired:

• Exposure to LangChain, LangGraph, Ango, and Langfuse.
• Exposure to OpenWebUI.
• Understanding of RAG concepts and vector databases.
• Familiarity with GenAI models.

What You Can Expect at CACI International Inc

CACI International Inc fosters a culture of integrity, placing character and innovation at the center of everything. As a valued team member, you'll be part of a high-performing group dedicated to customer missions and driven by a higher purpose – to ensure the safety of our nation.

The company provides an environment of trust, valuing the unique contributions of every employee. You'll have autonomy with a flexible time off benefit and access to robust learning resources to achieve your ambitions.

CACI International Inc focuses on continuous growth, aiming to advance critical missions, build on business success, and find opportunities for groundbreaking innovation in your career and the company's legacy. Your potential is limitless, as is theirs.

Key skills/competency

• Generative AI
• Large Language Models (LLMs)
• Prompt Engineering
• Retrieval Augmented Generation (RAG)
• Python
• TypeScript
• Azure OpenAI
• API Integration
• Docker
• CI/CD