Full Stack Engineer

AI Full-Stack EngineerWe are looking for an AI Full-Stack Engineer to build and deliver end-to-end software products that integrate modern AI capabilities into real operational workflows. This role spans frontend, backend, and AI application development, with a strong emphasis on using agentic coding tools to accelerate delivery and improve engineering throughput. You will work on production-grade applications that combine intuitive user experiences with AI-powered automation, decision support, and knowledge workflows.LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed. Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors-helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.ResponsibilitiesDesign, build, and ship full-stack applications from user interface to backend servicesDevelop AI-enabled features using LLMs, retrieval-augmented generation (RAG), tool-use agents, and orchestration frameworksIntegrate AI capabilities into existing enterprise platforms, workflows, and data systemsBuild secure, scalable APIs and services to support AI-powered applicationsCollaborate with product, platform, and security teams to deliver compliant, mission-ready solutionsUse agentic coding workflows (e.g., Anthropic Claude Code, Google Gemini Code Assist, OpenAI Codex, xAI Grok Code Fast, etc.) to accelerate implementation, testing, and iterationContribute to engineering standards for AI quality, evaluation, observability, and responsible deploymentQualifications Required QualificationsStrong experience building and delivering modern full-stack applicationsProficiency with backend development (Node.js, Python, Java, or similar) and API designFrontend experience with React, Next.js, or comparable frameworksPractical experience integrating AI/LLM capabilities into software productsFamiliarity with RAG pipelines, vector databases, prompt engineering, and agent toolchainsExperience working in cloud environments (AWS, Azure, or GCP) with containerized deploymentsStrong engineering fundamentals: testing, version control, CI/CD, and operational reliabilityPreferred QualificationsExperience deploying AI systems in regulated or enterprise environmentsFamiliarity with model evaluation, guardrails, and AI assurance practicesExposure to DevSecOps, compliance automation, or secure platform engineeringExperience with orchestration frameworks such as LangChain, LlamaIndex, Semantic Kernel, or custom agent runtimesKnowledge of FedRAMP, NIST, or other compliance-driven delivery constraintsWhat Success Looks LikeShipping production-ready AI-enabled features quickly and safelyBuilding software that is usable, maintainable, and operationally scalableLeveraging agentic development workflows to increase delivery velocityPartnering effectively across product, engineering, and compliance teamsHelping establish best practices for AI-native software deliveryAI is changing how software is built and operated. This role is for engineers who want to be at the center of that shift - delivering full-stack applications where AI is not an add-on, but a core capability The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances. Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work. Job Locations US-VA-Tysons group id: RTL412549