Company OverviewWe 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.
Position OverviewWe 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.
ResponsibilitiesDevelopment & Maintenance - Serve as primary developer and maintainer for existing web application built with ASP.NET Core backend and React frontend with Material UI
- Own end-to-end software lifecycle including design updates, development, testing, deployment, and production support
- Perform bug fixes, troubleshooting, and performance tuning to ensure optimal system stability and availability
- Refactor and modernize legacy code to improve maintainability and performance when feasible
Infrastructure & DevOps - Manage and maintain deployments on Windows Server using IIS
- Apply security patches, library upgrades, and system updates in a timely manner
- Monitor system health and proactively address potential issues
- Implement and maintain Windows Authentication using Claims/Negotiate protocol
Stakeholder Collaboration - Collaborate with Business Analyst and user base to review feature requests, triage bugs, and establish development priorities
- Function as co-product owner alongside Business Analyst to evaluate incoming requests and establish realistic timelines
- Interact directly with end users to clarify requirements, troubleshoot issues, and deliver effective solutions
- Participate in Agile/Scrum ceremonies and workflows
Documentation & Communication - Write and maintain comprehensive technical documentation
- Provide clear communication on project status, technical challenges, and solutions
Required Qualifications- Bachelor's Degree in an IT-related discipline
Technical Skills - Strong experience with .NET 8.0, ASP.NET Core, and Entity Framework Core
- Proficiency in React, TypeScript, and Material UI framework for front-end development
- Experience with modern front-end tooling including Vite, React Query, and Node.js (LTS)
- Solid understanding of Windows Authentication (Claims/Negotiate protocol) and security best practices
- Proficiency with Visual Studio 2022 (Community or Professional edition) - VS Code will not suffice for Windows Authentication scenarios
- Experience with SQL Server Developer Edition and database management tools (SSMS or Azure Data Studio)
- Understanding of web application architecture and best practices
- Knowledge of version control systems (Git)
- Experience with database management and optimization
Professional Skills - Proven ability to work independently with minimal oversight
- Strong problem-solving and analytical thinking skills
- Excellent communication skills for technical and non-technical audiences
- Experience in Agile/Scrum development environments
- Ability to prioritize and manage multiple tasks effectively
Experience - 10+ years of full stack web development experience
- Experience maintaining and enhancing legacy applications
- Background working directly with business stakeholders and end users
- Demonstrated experience in production environment management
Preferred Qualifications - Experience with additional AWS services
- Knowledge of CI/CD pipelines
- Familiarity with monitoring and logging tools
- Experience with database migrations and schema management
- Background in security best practices for web applications
- Experience with enterprise authentication systems
What We Offer - Opportunity to take ownership of a critical business application
- Direct collaboration with business stakeholders and end users
- Flexible, self-directed work environment
- Professional development opportunities in modern web technologies
Security Clearance - Must be suitable to pass Public Trust clearance
Company EEO StatementAccessibility/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 or call 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.
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