Apply on Employer Site

Millennial Software · 1 day ago

Junior-Mid Frontend Software Engineer, TS/SCI with CI Poly - $95K-$180K + 15% 401k

Tazewell County, VA

Full-time

Onsite

Entry, Mid Level

$95K/yr - $180K/yr

2+ years exp

Millennial Software is revolutionizing the landscape of security and defense by leveraging core competencies in software development, automation, DevSecOps, and machine learning. They are seeking a Junior - Mid level Frontend Software Developer to contribute to the design, development, and support of modern, data-driven applications that simplify complex user workflows and enable mission-critical decisions.

Application Performance ManagementCloud ComputingConsultingDeveloper ToolsDevOpsMobileQuality AssuranceSoftwareSoftware EngineeringWeb Development

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Build and maintain web application features using modern frontend frameworks and best practices

Develop reusable UI components and patterns; contribute to a consistent design system

Ensure high-quality user experiences through responsiveness, accessibility, and performance optimization

Integrate with backend APIs and collaborate on API contract design to support feature delivery

Write and maintain automated tests (unit, component, and end-to-end where applicable)

Participate in code reviews and contribute to shared engineering standards and documentation

Debug and resolve frontend issues across browsers and devices; support production troubleshooting as needed

Improve frontend build, CI, and release processes; reduce friction for the engineering team

Qualification

JavaScriptTypeScriptReactHTML/CSSAPI integrationFrontend performanceUnit testingCollaborationProblem-solvingCommunication

Required

Demonstrated experience building production web applications with modern JavaScript/TypeScript

Proficiency with at least one modern framework (e.g., React, Vue, Angular) and component-based design patterns

Strong understanding of HTML, CSS, browser fundamentals, and frontend performance considerations

Experience integrating with APIs and managing client-side state and data fetching patterns

Familiarity with testing practices (unit/component/E2E) and using Git-based workflows

Ability to partner effectively with design and product, translating requirements into polished UI

Bachelor's degree in a related field or equivalent practical experience

At least 2-10 years of experience performing frontend software development

Active TS/SCI clearance

Ability to work on-site at one of the following locations - Virginia: Fairfax, Chantilly, McLean, Sterling or Colorado: Colorado Springs

Preferred

Experience with accessibility standards (WCAG), inclusive design, and usability testing practices

Familiarity with design systems, UI tooling, and collaboration workflows (e.g., Figma handoff patterns)

Experience with SSR/SSG frameworks (e.g., Next.js, Nuxt) and SEO/performance trade-offs

Experience with observability for frontend (client-side logging, performance monitoring, error tracking)

Experience with micro-frontends or large-scale frontend architecture

Knowledge of secure frontend practices (XSS prevention, CSP, secure auth flows)

Experience creating and maintaining Docker containers, Helm charts, orchestration platforms such as Kubernetes clusters, and using cloud infrastructure services (AWS/Azure/GCP)