Applications Engineer Jobs in Charleston, SC (NOW HIRING)

We are seeking a highly skilled Senior Software Engineer with a focus on frontend web development to join our growing engineering team. In this role, you will take ownership of major features, mentor junior developers, and help shape the future of our web applications. You’ll work closely with product managers, designers, and backend engineers to deliver high-quality, scalable, and performant user experiences.

This position requires the ability to obtain and maintain a U.S. Secret or Top Secret security clearance with SCI (Sensitive Compartmented Information) eligibility. U.S. citizenship is required.

A Senior Frontend Engineer is an experienced developer who specializes in creating user interfaces for web applications, using modern technologies like JavaScript and frameworks such as React. They focus on optimizing performance, ensuring accessibility, and collaborating with design and backend teams to deliver engaging user experiences

· Design, develop, and maintain scalable and performant frontend applications using modern JavaScript frameworks (e.g., React, Vue, Angular).

· Collaborate cross-functionally with product, design, and backend teams to define and implement innovative solutions.

· Write clean, maintainable, and testable code that follows industry best practices.

· Lead and mentor other frontend engineers through code reviews, pair programming, and technical guidance.

· Drive technical decisions and contribute to architectural discussions.

· Ensure the technical feasibility of UI/UX designs and optimize applications for maximum speed and scalability.

· Stay current with the latest trends and technologies in frontend development.

· Competitive salary and equity package

· Flexibility with remote work (subject to clearance and customer requirements)

· Support for clearance processing and maintenance

· Comprehensive health, dental, and vision insurance

· 401(k) with company match and generous paid time off and sick leave.

· Mission-driven team culture supporting national security and innovation

Work Environment

• Collaborative Agile development team supporting secure web application delivery.
• May involve testing in multiple environments (Dev, Test, Integration).
• Some testing may occur on classified or controlled networks.
• Operates in a professional office environment and uses standard office equipment such as computers and phones

Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Ability to sit/ stand for up to 8 hours per day (with breaks)
• Ability to move freely for up to 8 hours per day

DISCLAIMER: The information contained herein is not intended to be an all-inclusive list of the duties and responsibilities of the job, nor are they intended to be an all-inclusive list of the skills and abilities required to do the job. While this is intended to be an accurate reflection of the current job, management reserves the right to revise the job or to require that other or different tasks be performed as assigned. This job description doesn't constitute a contract of employment and the company may exercise its employment-at-will rights at any time.

· U.S. citizenship and eligibility to obtain a Secret or Top Secret clearance with SCI access.

· B.S. degree or higher in Computer Science or related field such as E.E, Computer Information Technology, Math, Physics. Experience may substitute based on the requirements of the position.

· A minimum of 5 years of professional experience in frontend development.

· Strong proficiency in JavaScript, TypeScript, HTML5, and CSS3.

· In-depth experience with at least one major frontend framework (e.g., React, Vue, Angular).

· Familiarity with state management libraries (e.g., Redux, MobX).

· Understanding of REST APIs and asynchronous data flows.

· Experience with frontend build tools (e.g., Webpack, Babel, Vite).

· Proficiency in writing automated tests (unit, integration, end-to-end).

· Strong understanding of secure coding practices, accessibility, and performance optimization.

· Dealing with client requirements.

· Active Top Secret or TS/SCI clearance strongly preferred.

· Experience working in classified or restricted environments (e.g., DoD, IC).

· Familiarity with server-side rendering frameworks (e.g., Next.js).

· Experience with design systems, component libraries, and Storybook.

· Background in CI/CD pipelines, Docker, and cloud platforms (AWS GovCloud, Azure Government).

· Familiarity with STIGs, RMF, or other federal compliance standards.