UI Front-End Software Engineer-Principal

At NetSage, we are more than a government contractor—we are a mission-focused partner dedicated to advancing national security through exceptional cyber expertise. We believe our success begins with our people, which is why we invest in and care for our employees. We know that employee retention is mission continuity, and we are committed to building long-term careers where our people can grow alongside our customers' evolving missions. Our employees enjoy meaningful work, competitive compensation, outstanding benefits, and opportunities to expand their skills across multiple mission areas. To learn more about our comprehensive benefits and what it's like to build your career at NetSage, visit our Careers page. Due to the sensitive nature of the work we support, some job descriptions intentionally provide a high-level overview of the role. If you'd like to learn more about a particular opportunity, we encourage you to apply directly or connect with us through our Get In Touch page. We'd be happy to discuss how your experience aligns with our mission and explore where you can make an impact. Job Description: We are seeking a Principal Front-End Software Engineer with deep User Interface (UI) expertise to lead the design and development of modern, user-focused web applications that enable mission-critical operations. In this role, you will provide technical leadership to a team of front-end developers while remaining actively involved in the design, implementation, integration, and delivery of scalable software solutions throughout the full development lifecycle. The ideal candidate for this position will have extensive experience building responsive, accessible user interfaces, mentoring development teams, and collaborating across engineering disciplines to deliver high-quality software in an Agile environment. Please consider applying if you meet the following qualifications. Required Qualifications: TS/SCI with polygraph security clearance. A Bachelor of Science (B.S.) degree in Computer Science or a related field and twelve (12) years of relevant experience. Also acceptable is no degree and sixteen (16) years of relevant experience. Strong proficiency with modern front-end frameworks such as React, Angular, or Vue. Strong proficiency with HTML5, CSS3, and JavaScript. Experience with full-stack software development using technologies such as Node.js, Python, or Java. Experience designing and integrating RESTful and/or GraphQL APIs. Experience with state management, component-based application architecture, and responsive design. Experience using Git for version control and working within CI/CD pipelines. Experience developing applications in cloud environments such as AWS, Azure, or AWS GovCloud. Experience collaborating with UX/UI designers and systems engineers to deliver intuitive, accessible user experiences. Experience developing applications within Linux or Ubuntu environments. Familiarity with tiered or distributed software architectures.