Senior Front-End Full-Stack Engineer – Software Development Analyst

Mission Technologies, a division of HII

. Develop secure, intuitive, high-performance web applications supporting Defense Security Cooperation Agency mission and business objectives .

Posted 10/15/2026full-timeRemote • Virginia • United StatesSenior💰 $150,000 - $165,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCyber SecurityMaterial UIReactTypeScript

About the role

Key responsibilities & impact

Develop secure, intuitive, high-performance web applications supporting Defense Security Cooperation Agency mission and business objectives
Develop responsive, accessible, maintainable web applications using React, TypeScript, HTML, and CSS
Build reusable UI components, dashboards, forms, workflows, and data visualizations using design systems and component libraries
Develop conversational and AI-enabled user experiences, including chat interfaces, streamed responses, feedback mechanisms, and error or fallback states
Integrate front-end applications with RESTful APIs and support asynchronous, streaming, and real-time interactions
Implement client-side input validation, error handling, state management, authentication flows, and role-aware UI behavior
Apply secure front-end engineering practices and accessibility standards throughout design, development, testing, and release
Write and maintain component, integration, and end-to-end tests
Collaborate with product, design, backend, platform, cybersecurity, and AI/ML engineering teams
Support application deployment in AWS GovCloud, including approved services such as API Gateway, Amazon S3, and Amazon Bedrock
Participate in code review and Agile software delivery practices

Requirements

What you’ll need

Demonstrated experience developing production web applications using React, TypeScript, HTML, and CSS
Experience designing and implementing reusable components, responsive interfaces, and accessible user experiences
Experience integrating front-end applications with RESTful APIs and enterprise authentication and identity services
Working knowledge of client-side application architecture, state management, error handling, and testing practices
Experience with Git-based version control, code review, and Agile software delivery practices
Familiarity with secure software development and DevSecOps practices, including dependency management, secure configuration, secrets handling, SBOM processes, and software supply-chain integrity
Experience using component libraries or design systems, such as Material UI (MUI)
Must possess and maintain an active Secret clearance at the time of consideration
Must align with Eastern Time Zone core business hours
Relevant experience and education combination: 5 years with a bachelor's degree, 3 years with a master's degree, 0 years with a PhD, or 9 years with a high school diploma or equivalent for Software Development 3
Relevant experience and education combination: 9 years with a bachelor's degree, 7 years with a master's degree, 4 years with a PhD, or 13 years with a high school diploma or equivalent for Software Development 4
Preferred: 8+ years of experience
Experience developing conversational, AI-enabled, or generative AI user interfaces
Experience consuming streaming APIs, server-sent events, WebSockets, or other real-time communication patterns
Experience integrating applications with AWS services in AWS GovCloud environments
Experience working closely with backend, platform, cybersecurity, and AI/ML engineering teams
Familiarity with containerized application delivery and CI/CD pipelines
Must maintain a home work environment meeting company and government security requirements
Must be able to work assigned East Coast core business hours

Benefits

Comp & perks

Best-in-class medical, dental and vision plan choices
Wellness resources
Employee assistance programs
Savings Plan Options (401(k))
Financial planning tools
Life insurance
Employee discounts
Paid holidays and paid time off
Tuition reimbursement
Early childhood and post-secondary education scholarships
Bonus/other non-recurrent compensation may occasionally be offered for qualified positions
Fully remote work arrangement
Company and government-compliant home-office setup support