Senior Full Stack Developer

We are a world-class team of professionals who deliver next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems in 50+ locations world-wide. Much of our work contributes to innovative research in the fields of sensor science, signal processing, data fusion, artificial intelligence (AI), machine learning (ML), and augmented reality (AR).QinetiQ US’s dedicated experts in defense, aerospace, security, and related fields all work together to explore new ways of protecting the American Warfighter, Security Forces, and Allies. Being a part of QinetiQ US means being central to the safety and security of the world around us. Partnering with our customers, we help save lives; reduce risks to society; and maintain the global infrastructure on which we all depend.Why Join QinetiQ US?If you have the courage to take on a wide variety of complex challenges, then you will experience a unique working environment where innovative teams blend different perspectives, disciplines, and technologies to discover new ways of solving complex problems. In our diverse and inclusive environment, you can be authentic, feel valued, be respected, and realize your full potential. QinetiQ US will support you with workplace flexibility, a commitment to the health and well-being of you and your family and provide opportunities to work with a purpose. We are committed to supporting your success in both your professional and personal lives.We are seeking an experienced Sr Full Stack Developer to serve as the primary developer and maintainer of our existing web application. This role requires a self-directed professional who can own the complete software development lifecycle while working closely with business stakeholders and end users. The ideal candidate will have strong experience with .NET Core, React applications, and enterprise security implementations.Development & MaintenanceServe as primary developer and maintainer for existing web application built with ASP.NET Core backend and React frontend with Material UIOwn end-to-end software lifecycle including design updates, development, testing, deployment, and production supportPerform bug fixes, troubleshooting, and performance tuning to ensureoptimalsystem stability and availabilityRefactor and modernize legacy code to improve maintainability and performance whenfeasibleInfrastructure & DevOpsManage andmaintaindeployments onWindows Server using IISApply security patches, library upgrades, and system updatesin a timely mannerMonitor system health and proactively address potential issuesImplement andmaintainWindows Authentication using Claims/Negotiate protocolStakeholder CollaborationCollaborate with Business Analyst and user base to review feature requests, triage bugs, andestablishdevelopment prioritiesFunction as co-product owner alongside Business Analyst to evaluate incoming requests andestablishrealistic timelinesInteract directly with end users to clarify requirements, troubleshoot issues, and deliver effective solutionsParticipate in Agile/Scrum ceremonies and workflowsDocumentation & CommunicationWrite andmaintaincomprehensive technical documentationProvide clear communication on project status, technical challenges, and solutionsBachelor's Degree in an IT-related disciplineTechnical SkillsStrong experience with.NET 8.0,ASP.NET Core, andEntity Framework CoreProficiencyinReact,TypeScript, andMaterial UI frameworkfor front-end developmentExperience with modern front-end tooling includingVite,React Query, and Node.js (LTS)Solid understanding ofWindows Authentication(Claims/Negotiate protocol) and security best practicesProficiencywithVisual Studio 2022(Community or Professional edition) —VS Code will not sufficefor Windows Authentication scenariosExperience withSQL Server Developer Editionand database management tools (SSMS or Azure Data Studio)Understanding of web application architecture and best practicesKnowledge of version control systems (Git)Experience with database management and optimizationProfessional SkillsProven ability to work independently with minimal oversightStrong problem-solving and analytical thinking skillsExcellent communication skills for technical and non-technical audiencesExperience inAgile/Scrumdevelopment environmentsAbility to prioritize and manage multiple tasks effectivelyExperience10+ years of full stack web development experienceExperiencemaintainingand enhancing legacy applicationsBackground working directly with business stakeholders and end usersDemonstrated experience in production environment managementPreferred QualificationsExperience withadditionalAWS servicesKnowledge of CI/CD pipelinesFamiliarity with monitoring and logging toolsExperience with database migrations and schema managementBackground in security best practices for web applicationsExperience with enterprise authentication systemsWhat We OfferOpportunity to take ownership of a critical business applicationDirect collaboration with business stakeholders and end usersFlexible, self-directed work environmentProfessional development opportunities in modern web technologiesSecurity ClearanceMust be suitable to passPublic Trust clearanceAccessibility/Accommodation:If because of a medical condition or disability you need a reasonable accommodation for any part of the employment process, please send an e-mail to call (540) 658-2720 Opt. 4 and let us know the nature of your request and contact information.QinetiQ US is an Equal Opportunity/Affirmative Action employer. All Qualified Applicants will receive equal consideration for employment without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status.

Created: 2025-10-09