Senior Full Stack Developer

Company Overview

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.

Position Overview

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. 

Responsibilities

Development & 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 arc