Full-Stack Developer Job at RMantra Solutions, Reston, VA

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  • RMantra Solutions
  • Reston, VA

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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