QinetiQ US (formerly Avantus Federal)
Fullstack Developer
QinetiQ US (formerly Avantus Federal), Washington, District of Columbia, us, 20022
Overview
Join to apply for the
Full Stack Developer
role at
QinetiQ US (formerly Avantus Federal) . We are a world-class team delivering next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems across 50+ locations. Our work spans sensor science, signal processing, data fusion,
AI/ML , and augmented reality. Our defense, aerospace, security, and related fields experts collaborate to protect the Warfighter, Security Forces, and Allies, helping save lives and maintain global infrastructure. Why join QinetiQ US? If you welcome complex challenges, you’ll experience a unique environment where diverse teams blend perspectives and technologies to solve problems. Our inclusive culture supports authenticity, value, respect, and growth, with flexible work arrangements and opportunities to work with purpose. Position overview: We are seeking an experienced
Full Stack Developer
to serve as the primary developer and maintainer of our existing web application. The role requires a self-directed professional who owns the full software development lifecycle and collaborates with business stakeholders and end users. The ideal candidate has strong experience with
.NET Core ,
React
applications, and enterprise security implementations. Responsibilities
Serve as the primary developer and maintainer for the existing web application built with an 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 system stability and availability. Refactor and modernize legacy code to improve maintainability and performance where 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 the Claims/Negotiate protocol. Stakeholder Collaboration
Collaborate with Business Analysts and user base to review feature requests, triage bugs, and establish development priorities. Function as co-product owner alongside Business Analyst to evaluate 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 . Experience with modern front-end tooling including
Vite ,
React Query , and
Node.js (LTS) . Solid understanding of
Windows Authentication
(Claims/Negotiate) and security best practices. Proficiency with
Visual Studio 2022
(VS Code is not sufficient for Windows Authentication scenarios). Experience with
SQL Server Developer Edition
and database tools (SSMS or Azure Data Studio). Understanding of web application architecture and best practices; knowledge of 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
4-7 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 Statement
Accessibility/Accommodation: If you need a reasonable accommodation for any part of the employment process, please email staffing@us.QinetiQ.com or call (540) 658-2720 Opt. 4 with your request and contact information. QinetiQ US is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive equal consideration without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status. Additional Details
Seniority level: Mid-Senior level Employment type: Full-time Job function: Engineering and Information Technology Industries: Defense and Space Manufacturing
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Join to apply for the
Full Stack Developer
role at
QinetiQ US (formerly Avantus Federal) . We are a world-class team delivering next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems across 50+ locations. Our work spans sensor science, signal processing, data fusion,
AI/ML , and augmented reality. Our defense, aerospace, security, and related fields experts collaborate to protect the Warfighter, Security Forces, and Allies, helping save lives and maintain global infrastructure. Why join QinetiQ US? If you welcome complex challenges, you’ll experience a unique environment where diverse teams blend perspectives and technologies to solve problems. Our inclusive culture supports authenticity, value, respect, and growth, with flexible work arrangements and opportunities to work with purpose. Position overview: We are seeking an experienced
Full Stack Developer
to serve as the primary developer and maintainer of our existing web application. The role requires a self-directed professional who owns the full software development lifecycle and collaborates with business stakeholders and end users. The ideal candidate has strong experience with
.NET Core ,
React
applications, and enterprise security implementations. Responsibilities
Serve as the primary developer and maintainer for the existing web application built with an 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 system stability and availability. Refactor and modernize legacy code to improve maintainability and performance where 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 the Claims/Negotiate protocol. Stakeholder Collaboration
Collaborate with Business Analysts and user base to review feature requests, triage bugs, and establish development priorities. Function as co-product owner alongside Business Analyst to evaluate 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 . Experience with modern front-end tooling including
Vite ,
React Query , and
Node.js (LTS) . Solid understanding of
Windows Authentication
(Claims/Negotiate) and security best practices. Proficiency with
Visual Studio 2022
(VS Code is not sufficient for Windows Authentication scenarios). Experience with
SQL Server Developer Edition
and database tools (SSMS or Azure Data Studio). Understanding of web application architecture and best practices; knowledge of 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
4-7 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 Statement
Accessibility/Accommodation: If you need a reasonable accommodation for any part of the employment process, please email staffing@us.QinetiQ.com or call (540) 658-2720 Opt. 4 with your request and contact information. QinetiQ US is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive equal consideration without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status. Additional Details
Seniority level: Mid-Senior level Employment type: Full-time Job function: Engineering and Information Technology Industries: Defense and Space Manufacturing
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