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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Software Engineer, AI - **Company:** Fantom Corporation - **Location:** Chantilly, VA, United States - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Agile Methodology, Artificial Intelligence, Amazon Web Services, Applications Architecture, Software Applications, Automated Storage and Retrieval Systems, HTML5, Unit Testing, Microsoft Azure, Cascading Style Sheets (CSS), Cloud Engineering, Software Quality, Code Review, Data Discovery, DevOps, Elasticsearch, Integrated Development Environments, Knowledge Management, Cisco Nexus Switches, Node.Js, Open Source Technology, Scrum Methodology, Search Technologies, Software Construction, Software Engineering, Systems Integration, Web Services, Enterprise Search, Transport Layer Security, Enterprise Software Applications, ReactJS, Large Language Models, Database Optimization, Generative AI, Backend, Git, AI Platforms, Integration Tests, Patch Management, Web Technologies, Restful APIs, Data Pipelines, Devsecops, Jenkins - **Published:** August 31, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9130029/full-stack-software-engineer-ai ## About the Role * Must be fully cleared with a recent polygraph * Experience working in Lean Agile software development environments * Experience developing enterprise software applications throughout the full software development lifecycle * Experience building AI-powered applications using Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), semantic search, or AI-assisted retrieval systems * Experience translating customer requirements into scalable technical designs * Experience designing system interfaces and application architectures * Experience developing modern Single Page Applications (SPAs) using React, HTML5, CSS3, and JavaScript * Experience developing RESTful APIs using Node.js, Express, or similar backend frameworks * Experience troubleshooting web technologies, web services, SSL, and internet-based application protocols * Experience with automated testing frameworks such as Jest or Karma * Experience using DevOps tools including Git, Jenkins, Nexus, or similar CI/CD platforms * Experience designing, deploying, and tuning Elasticsearch environments, including indexing strategies, querying, relevance optimization, and scalability * Experience designing or implementing data pipelines supporting search, document ingestion, embeddings, vector search, and RAG workflows * Strong analytical, troubleshooting, and problem-solving skills * Excellent written and verbal communication skills Desired Qualifications * Recent experience supporting Agile development within Intelligence Community or other secure government environments * Experience evaluating, selecting, and integrating commercial or open-source Large Language Models into enterprise applications * Experience with vector databases, hybrid search architectures, semantic search, and relevance optimization * Experience leading technical teams or mentoring engineers on AI, search technologies, and modern software engineering best practices * Experience with cloud-native architectures and enterprise AI platforms * Experience developing scalable knowledge management or enterprise search platforms ## Description We are seeking a Full Stack Software Engineer to develop next-generation search and AI-powered applications supporting mission-critical operations. This role focuses on designing scalable web applications, developing intelligent search capabilities, integrating Large Language Models (LLMs), and building Retrieval-Augmented Generation (RAG) solutions that enhance data discovery and user experience. The ideal candidate has experience building modern React and Node.js applications, designing scalable search platforms with Elasticsearch, and integrating AI/LLM technologies into enterprise solutions while working within Agile and DevSecOps environments. Responsibilities * Participate in Lean Agile ceremonies, including sprint planning, backlog grooming, daily standups, and retrospectives * Collaborate with product owners, engineers, operations, cybersecurity, and testing teams to deliver scalable software solutions * Design, develop, test, and maintain full-stack enterprise applications * Build modern Single Page Applications (SPAs) using React, HTML5, CSS3, and JavaScript * Develop RESTful APIs and backend services using Node.js, Express, or comparable frameworks * Design, implement, and optimize enterprise search solutions using Elasticsearch * Develop AI-powered search capabilities, including Retrieval-Augmented Generation (RAG) pipelines and semantic search solutions * Integrate Large Language Models (LLMs) into enterprise applications to enhance search, knowledge retrieval, and user workflows * Design and implement data ingestion pipelines supporting search indexing, document chunking, embeddings, and vector search * Develop detailed technical designs, interface specifications, and supporting documentation * Collaborate with stakeholders to translate business and mission requirements into technical solutions * Perform unit testing, integration testing, and code reviews to ensure software quality and reliability * Track vendor software releases, upgrades, and patch management activities * Utilize DevOps tools and CI/CD pipelines to automate software development, testing, and deployment * Support cloud-native application development within AWS, Azure, or similar cloud environments ## Related Videos - [Agentic employees in world's most downloaded FinTech app](https://www.wearedevelopers.com/videos/100123-agentic-employees-in-world-s-most-downloaded-fintech-app) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Best practices: Building Enterprise Applications that leverage GenAI](https://www.wearedevelopers.com/videos/1513-best-practices-building-enterprise-applications-that-leverage-genai) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [Dev Digest 122 - Cracks in the polyfill](https://www.wearedevelopers.com/magazine/457-dev-digest-122-cracks-in-the-polyfill) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this)