Full Stack Developer

M9 Solutions is seeking a Full Stack Developer to work on-site for a client located in Ashburn, VA. An active Public Trust clearance is required.

Responsibilities

• Design, build, and maintain scalable full-stack applications using Next.js, React, NestJS, and MongoDB.
• Integrate and optimize AI-based features, including RAG pipelines and LLM-powered tools.
• 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.

Required Skills and Qualifications

• Active Public Trust clearance.
• 3–5 years of experience as a Full Stack Engineer or similar role.
• Strong proficiency in JavaScript/TypeScript, React, Next.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 engineering techniques 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 Skills and Qualifications

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