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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Front End Engineer SME - **Company:** Applied Information Sciences, Inc. - **Location:** Washington, DC, United States - **Experience:** Expert - **Salary:** $117,000.0 - $177,000.0 - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Amazon Web Services, JIRA, Cascading Style Sheets (CSS), Cloud Computing, Software Quality, Code Review, Continuous Integration, Software Debugging, DevOps, JSON, Node.Js, Performance Tuning, Responsive Web Design, Systems Integration, TypeScript, User Interface Testing, Software Vulnerability Management, Web Content Accessibility Guidelines, Extensible Markup Language (XML), YAML, Cloud Platform System, ReactJS, Cypress (Programming Language), Reliability of Systems, Backend, Gitlab, Git, SC Clearance, Syntactically Awesome Style Sheets (SASS), Gitlab-ci, Git Flow, Material UI, Front End Software Development, React Testing Library, Software Coding, Restful APIs, Code Restructuring, Software Version Control, Artifactory - **Published:** August 28, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9124948/sr-front-end-engineer-sme ## About the Role * Must have an active Top-Secret clearance and be eligible for SCI. * 8+ years of experience developing modern frontend applications using React, JavaScript, TypeScript, and Node.js * Advanced experience building UI components with HTML, CSS, Sass, and responsive design frameworks * Strong experience integrating with REST APIs and working with JSON and XML data formats * Proficiency with Git and GitLab for source control, collaboration, and code review workflows * Ability to design, refactor, and maintain scalable frontend architectures in cloud environments (AWS preferred) * Deep understanding of frontend performance optimization, browser behavior, debugging techniques, and application profiling * Demonstrated ability to mentor developers and lead best-practice discussions across the engineering team * Experience building cloud-native solutions in AWS * Experience with YAML and CI/CD pipeline development (GitLab CI preferred) * Experience with package scan vulnerability remediation * Experience with integration with .NET APIs or full stack environments Nice to Have Skills * Experience with automated UI testing frameworks (Jest, React Testing Library, Cypress) * Familiarity with accessibility standards (Section 508, WCAG) * Familiarity with JFrog Artifactory * Familiarity with Jira for DevOps ## Description At AIS, we are dedicated to providing our employees with diverse opportunities to grow their careers while supporting a variety of impactful projects. For this position, we are seeking a talented individual to join AIS as a Lead Software Engineer. * Core Knowledge & Skills: Operates independently or as a team lead, selects appropriate persistence technologies (e.g., EF, Dapper), defines source control strategies, and designs subsystem infrastructure. * Work & Complexity: Tackles complex problems with thorough analysis, manages cross-functional delivery, and improves system reliability and scalability. * Quality & Independence: Consistently meets deadlines even under challenging conditions, enforces standards through detailed reviews, and establishes productivity benchmarks for the team. * Teamwork & Communication: Provides functional leadership by setting objectives, organizing resources, resolving conflicts, and engaging confidently with both internal and external stakeholders. * Consulting & Engagement: Troubleshoots advanced client issues, supports requirements gathering, and contributes to vendor presentations or proposal activities., As a Senior Front-end Developer, you will play a pivotal role in architecting, building, and optimizing modern user interfaces that support mission-critical applications. You will lead the development of scalable, high-performance front-end solutions using React, TypeScript, JavaScript, Node.js, and AWS-hosted environments, ensuring seamless integration with .NET back-end services. In this role, you will mentor mid-level developers, set engineering standards, and champion best practices in code quality, accessibility, and performance. You will collaborate closely with designers, back-end engineers, product owners, and mission stakeholders to deliver intuitive, secure, and reliable user experiences that meet evolving customer and program needs. Drawing on deep technical expertise and strong problem-solving skills, you will help guide architectural decisions, drive continuous improvement, and ensure front-end components operate effectively within enterprise-grade systems., * Lead the design and development of responsive, high-performance user interfaces using Node.js, React, JavaScript, TypeScript, HTML, and CSS * Architect modular, maintainable, and scalable UI component libraries aligned with modern engineering standards * Mentor and provide technical guidance to mid level and junior frontend developers, including reviewing code, coaching on best practices, and supporting skill development * Integrate frontend applications with backend .NET services using REST APIs, JSON, and XML * Drive client-side state management patterns, rendering optimization, and performance tuning for enterprise-grade applications * Collaborate closely with UX/UI designers, backend engineers, and product owners to ensure seamless end-to-end functionality * Establish and enforce coding standards, accessibility guidelines, and quality controls across the frontend codebase * Use Git and GitLab for version control, branching strategies, and merge request workflows * Troubleshoot complex UI issues across environments, platforms, and browsers, providing root-cause analysis and actionable remediation * Operate within AWS cloud-hosted environments and support integration, deployments, and environment troubleshooting * Promote a culture of high-quality engineering through code reviews, design reviews, and knowledge-sharing sessions * Support planning, estimation, and architectural discussions for new features and modernization efforts * Partner with teams to ensure frontend solutions meet accessibility, security, and performance requirements * Review code and container scans and remediate both code and package vulnerabilities on a regular basis. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Microfrontends at Scale](https://www.wearedevelopers.com/videos/236-microfrontends-at-scale) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers)