Job Description

• Work Schedule: Onsite
• Clearance: CBP Full BI
• Location: Ashburn, VA
• End Client: DHS/CBP

Summary
Strong experience in modern web development and applied AI integration. The ideal candidate will be comfortable building scalable, data-driven web applications using React , Next.js , NestJS , and MongoDB , and will have hands-on experience implementing Retrieval-Augmented Generation (RAG) systems and prompt engineering for AI-driven features.
You’ll work across the stack to design, develop, and deploy robust products that leverage both front-end interactivity and intelligent backend systems.
Responsibilities
• Design, build, and maintain scalable full-stack applications using js, React, NestJS, and MongoDB.
• Integrate and optimize AI-based features, including RAG pipelinesand LLM-powered
• Develop and tune prompt templates, retrieval chains, and embeddings for contextual AI performance.
• Collaborate with product managers, designers, and data scientists to translate requirements into technical solutions.
• Implement secure APIs, efficient data models, and robust backend services.
• Ensure application performance, security, and reliability across deployments.
• Participate in code reviews, testing, and CI/CD pipelines.
• Stay up to date with modern frameworks, AI integration patterns, and best practices in full-stack engineering.

Qualifications
Required:
• 3–5 years of experience as a Full Stack Engineeror similar role.
• Strong proficiency in JavaScript/TypeScript, React, js, NestJS, and MongoDB.
• Experience building and deploying RAG-based AI systems(e.g., integrating vector databases, embedding models, or LLM APIs).
• Familiarity with prompt engineeringtechniques for optimizing AI outputs.
• Strong understanding of RESTful and GraphQL API design.
• Experience with version control (Git), containerization (Docker), and cloud platforms (AWS, GCP, or Azure).

Preferred
• Familiarity with LangChain, LlamaIndex, or similar frameworks for AI application development.
• Experience with vector databases(e.g., Pinecone, Weaviate, Milvus).
• Knowledge of CI/CD pipelinesand DevOps practices.
• Experience working in Agile/Scrum

For more information please contact us at HR@rmantras.com

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