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Senior Full Stack Engineer

Rohirrim - McLean, VA, United States - Hybrid - posted 2026-09-10

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Rohirrim is pioneering enterprise AI with Rohan, a patented, domain-aware generative AI platform that helps Fortune 1000 companies, aerospace and defense organizations, and government agencies automate complex processes like RFP creation and knowledge management. We are seeking a Senior Full Stack Engineer to help design, build, and scale our generative AI-powered enterprise web applications. This is a hands-on, senior-level role where you will architect services, ensure performance and reliability, and contribute to both backend and frontend features (approximately 50/50 split, with flexibility). You will collaborate closely with product managers and UI/UX designers to deliver secure, scalable AI-driven solutions. Key Responsibilities: - Architect, design, and build scalable backend systems with a focus on reliability, performance, and maintainability - Develop APIs and services in Nest.js/Node.js, integrating with databases, LLM providers, and external systems - Build and integrate features powered by generative AI, including LLM orchestration, prompt design, and retrieval-augmented workflows within Rohan - Contribute to frontend development in Angular/TypeScript, ensuring seamless user experiences - Write efficient, maintainable SQL queries and design database schemas for application features - Collaborate with cross-functional teams to deliver secure and scalable AI-driven solutions - Ensure high code quality via testing, code reviews, and best practices - Participate in system design discussions and help set technical direction, including how AI/LLM capabilities are architected into the platform Requirements: - 5+ years of professional experience as a Full Stack Engineer - Strong experience with TypeScript/JavaScript - Hands-on experience with Nest.js/Node.js - Hands-on experience with a JavaScript UI framework (Angular/React/Vue) - Strong SQL skills (schema design, query optimization) - Basic knowledge of Azure DevOps (pipelines, workflows) - Hands-on experience integrating with LLM providers/APIs (e.g., OpenAI, Anthropic, Azure OpenAI) in a production application - Practical experience with prompt engineering and retrieval-augmented generation (RAG) architectures

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