CACI→
Junior GenAI Developer Intern - Summer 2026 at CACI in Reston, VA
Skills
Job Description
The Opportunity:
We’re seeking a Junior GenAI Developer passionate about creating and delivering AI-driven solutions—from crafting effective prompts and integrating models to building evaluation frameworks and implementing safety guardrails. In this role, you’ll collaborate closely with senior engineers and product managers to prototype, refi ne, and deploy GenAI capabilities that make a real difference for our 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 to support content analysis, content gap identification, content summarization and like activities.
- Implement and optimize RAG (Retrieval Augmented Generation) systems to provide accurate information retrieval and contextual responses
- Write prompt chains, system prompts, and structured outputs (JSON/XML/Markdown) for reliable responses.
- Build evaluation harnesses: test sets, metrics, and A/B experiments.
- Develop, manage, and deploy intelligent AI agents to include knowledge retrieval (RAG), allowing interaction with external APIs, databases, and applications.
- Develop connectors and RAG pipelines. Use open-source platforms for debugging, testing, testing, and monitoring generative AI applications
- Implement guardrails and safety (content and safety filters, PII scrubbing, hallucination detection, policy enforcement).
- Develop, manage, and deploy intelligent AI agents to include knowledge retrieval (RAG), allowing interaction with external APIs, databases, and applications.
- Develop connectors and RAG pipelines.
- 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 tradeoff s (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 soft ware(internships count).
- Hands-on 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 the need for employer sponsorship, now or at any time in the future
Desired:
- Exposure to LangChain, LangGraph, Ango, and Langfuse
- Exposure to OpenWebUI
- Understanding of RAG concepts and vector databases.
- Familiarity with GenAI models
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What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.
Your potential is limitless. So is ours.
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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:
$45,900 - $91,900