{"id":3333296,"url":"https://alion.io/job/general-dynamics-information-technology-principal-full-stack-software-engineer-2","title":"Principal Full Stack Software Engineer","company":{"id":4418,"name":"General Dynamics Information Technology","domain":"gdit.com","url":"https://alion.io/company/gdit","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":100,"open_postings":21,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-10-28T05:59:10Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Arlington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140821,"max":190523,"currency":"USD","period":"year","gross":null,"usd_annual":190523},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Function Calling","optional":false},{"name":"Git","optional":false},{"name":"Kubernetes","optional":false},{"name":"Machine Learning","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Rest API","optional":false},{"name":"Streamlit","optional":false},{"name":"Agentic Workflows","optional":true},{"name":"LLM","optional":true},{"name":"Structured Outputs","optional":true}],"status":"live","first_seen_at":"2026-10-26T00:00:00Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-10-28T08:33:31Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Type of Requisition:\nPipelineClearance Level Must Currently Possess:\nTop Secret/SCIClearance Level Must Be Able to Obtain:\nTop Secret SCI + PolygraphPublic Trust/Other Required:\nNoneJob Family:\nData Science and Data EngineeringJob Qualifications:\nSkills:\nAmazon Web Services (AWS), Application Development, Machine Learning (ML)Certifications:\nNoneExperience:\n8 + years of related experienceUS Citizenship Required:\nYesJob Description:\nYOUR IMPACT\nOwn your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of War’s mission to keep our country safe and secure.\nOUR COMPANY\nIron EagleX (IEX), a wholly owned subsidiary of General Dynamics Information Technology (GDIT), delivers agile IT and Intelligence solutions. Combining small-team flexibility with global scale, IEX leverages emerging technologies to provide innovative, user-focused solutions that empower organizations and end users to operate smarter, faster, and more securely in dynamic environments.\nJOB DESCRIPTION\nIron EagleX is seeking a Principal Full Stack Software Engineer (Agentic AI focused) to support our AI team in Crystal City, VA. This role will design, deploy, and sustain critical components of our AI analytics stack, including analytic frontends, production APIs, interfaces between AI workflow components, and the underlying data layer.\nMEANINGFUL WORK AND PERSONAL IMPACT\nAs a Principal Full Stack Software Engineer, you will be a core member of the AI team responsible for prototyping, building, and delivering critical data analytics capabilities. You will help translate emerging AI and machine learning concepts into reliable, user-focused software solutions that support mission outcomes.\nJOB DUTIES (INCLUDE BUT ARE NOT LIMITED TO)\nDevelop clean, maintainable, and efficient Python code while adhering to best practices and coding standards. \nLead the technical design and implementation of AI-enabled web applications and analytics using Streamlit, React, or similar technologies. \nIntegrate modern AI and large language model capabilities into applications and workflows, including prompting, tool calling, retrieval-augmented generation (RAG), and related patterns. \nDesign, develop, and integrate APIs, including FastAPI-based services, to enable seamless communication between systems. \nBuild and maintain user interfaces that make complex AI, data, and analytics capabilities accessible to end users. \nEstablish and maintain CI/CD pipelines and container-based deployments using tools such as Docker to support repeatable builds and reliable releases. \nWork with relational databases such as PostgreSQL and MySQL to ensure data integrity, performance, and efficiency. \nImplement and maintain version control using Git to streamline collaboration and code management. \nCollaborate with cross-functional teams to define, design, develop, test, and deliver new features. \nContribute to all stages of the software development life cycle, from concept and design through testing, deployment, and sustainment. \nREQUIRED SKILLS\nProficiency in writing clean, maintainable, and efficient Python code. \nExperience building AI-enabled web applications, analytic dashboards, or user workflows using Streamlit or similar technologies. \nStrong knowledge of web technologies, containerization, RESTful APIs, and user interface development. \nExperience designing and maintaining scalable backend solutions using Python frameworks. \nFamiliarity with relational database systems such as PostgreSQL and MySQL. \nProficiency with Docker; Kubernetes experience is a plus. \nProficiency with Git-based version control and collaborative software development workflows. \nHands-on experience with full stack development and a strong understanding of the software development life cycle. \nDESIRED SKILLS\nExperience developing modern front-end applications using React. \nHands-on experience designing or developing LLM-powered agentic workflows that use tool calling, structured outputs, task planning, and multi-step execution. \nFamiliarity with component-based UI development, state management, and reusable front-end design patterns. \nExperience integrating React-based frontends with RESTful APIs or Python-based backend services. \nExperience supporting AI, machine learning, data analytics, or mission-focused software applications. \nFamiliarity with cloud-native application development, DevSecOps practices, or secure software delivery environments. \nExperience implementing reliable AI workflows with validation, error handling, retries, logging, and fallback strategies. \nUnderstanding of MLOps concepts, including model registry/versioning, reproducible environments, and CI/CD for ML-enabled systems. \nWHAT YOU’LL NEED TO SUCCEED\nClearance: Current TS/SCI Clearance with active or ability to obtain CI Polygraph is required \nExperience: 8+ years of related experience \nEducation: Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience) \nRole requirements: Work is onsite in Crystal City, VA with optional CONUS travel \nDue to US Government Contract Requirements, only US Citizens are eligible for this role \nGDIT IS YOUR PLACE \nAt GDIT, the mission is our purpose, and our people are at the center of everything we do.\nGrowth: AI-powered career tool that identifies career steps and learning opportunities \nSupport: An internal mobility team focused on helping you achieve your career goals \nRewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off \nCommunity: Award-winning culture of innovation and a military-friendly workplace \nOWN YOUR OPPORTUNITY \nExplore a career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results. #iexjobs #iexpriority\nEqual Opportunity Employer / Individuals with Disabilities / Protected Veterans\nThe likely salary range for this position is $140,821 - $190,523. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:\n40Travel Required:\n10-25%Telecommuting Options:\nOnsiteWork Location:\nUSA VA ArlingtonAdditional Work Locations:\nTotal Rewards at GDIT:\nOur benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.Our Identity Verification Process:\nAs part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.About Our Work:\nWe are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.\nEqual Opportunity Employer / Individuals with Disabilities / Protected Veterans","description_format":"text","description_chars":8537,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["401k plan"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Government","Military","Professional Services","National Security"],"lifecycle":[{"event":"open","at":"2026-10-27T12:42:45Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 21 · green card filings: 4","filings_12m":21,"filings_prev_12m":30,"green_card_filings_12m":4,"median_offered_wage_usd":154900,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":15}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":39,"reasons":["conf:3","velocity","win:early","comp:brand"],"computed_at":"2026-10-28T05:59:10Z"},"pay":{"stated_usd_annual":190523,"is_top_pay":false},"html_url":"https://alion.io/job/general-dynamics-information-technology-principal-full-stack-software-engineer-2","json_url":"https://alion.io/job/general-dynamics-information-technology-principal-full-stack-software-engineer-2.json","meta":{"generated_at":"2026-10-28T11:31:29Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":15125,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4418},"rest":"https://alion.io/mcp/rest/get_company?id=4418"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fgeneral-dynamics-information-technology-principal-full-stack-software-engineer-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fgeneral-dynamics-information-technology-principal-full-stack-software-engineer-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fgeneral-dynamics-information-technology-principal-full-stack-software-engineer-2"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/general-dynamics-information-technology-principal-full-stack-software-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fgeneral-dynamics-information-technology-principal-full-stack-software-engineer-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3333296}},{"tool":"search_jobs","arguments":{"company":"gdit.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3333296},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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