Sr. Front-End Software Developer | TS/SCI

Saxon Global•Sterling, VA

2d•Onsite

About The Position

We are seeking an experienced Senior Front-End Software Developer who will be supporting the development of highly visible, mission-critical cloud-native applications that provide advanced Situational Awareness and Collaboration capabilities. This role focuses on building modern, responsive, and data-rich user interfaces that consume real-time information from distributed backend systems. The successful candidate will have deep expertise in JavaScript and TypeScript development, experience building sophisticated front-end applications, and a strong understanding of how front-end systems interact with microservices, streaming platforms, and cloud-native architectures. You will work closely with backend engineers, architects, and mission stakeholders to build intuitive applications capable of processing and displaying large volumes of information in near real-time. Success in this role requires a strong understanding of asynchronous programming, concurrency patterns, API integration, and modern front-end development practices. We use Svelte as its primary front-end framework. Prior Svelte experience is highly desired but not required for candidates with strong modern JavaScript framework expertise and a willingness to learn.

Requirements

Minimum of 7 years of professional software development experience, with a strong focus on front-end engineering.
Advanced proficiency in JavaScript and TypeScript.
Experience developing and deploying applications within Linux-based environments.
Strong experience building modern web applications and user interfaces.
Experience consuming and integrating RESTful web services and APIs.
Strong understanding of asynchronous programming concepts, including Promises, async/await patterns, concurrency, and parallel data processing.
Experience building applications that support near real-time data delivery and dynamic user experiences.
Understanding of distributed systems and how front-end applications interact with microservices architectures.
Demonstrated ability to lead technical efforts and mentor junior engineers.
Bachelor's degree in Computer Science, Software Engineering, or related field; or graduation from an accredited coding bootcamp with equivalent experience.
Must possess or be willing to obtain a CompTIA Security+ certification.
TS/SCI Clearance
Must possess or be willing to obtain a CompTIA Security+ certification.

Nice To Haves

Experience with Svelte or other modern front-end frameworks.
Experience developing applications utilizing WebSockets and real-time communication technologies.
Familiarity with Kafka and event-driven architectures, including consuming and visualizing data originating from streaming platforms.
Experience supporting highly concurrent applications with complex data-loading requirements.
Experience with Kubernetes, Docker, and cloud-native deployment environments.
Experience delivering mission-critical applications within government, defense, intelligence, or other secure environments.
Experience designing front-end architectures for highly available and scalable systems.
Security+ certification.
Experience working in classified environments and supporting mission-sensitive programs is highly desired.
Current TS/SCI eligibility and CI Polygraph are strongly preferred.

Responsibilities

Design, develop, and maintain modern cloud-native front-end applications using JavaScript, TypeScript, and contemporary web technologies.
Build highly intuitive user experiences that support mission-critical situational awareness and collaboration workflows.
Develop efficient client-side applications capable of handling large data sets, concurrent requests, and near real-time information updates.
Integrate front-end applications with RESTful APIs, WebSocket services, and distributed backend systems.
Collaborate closely with backend engineers to consume services and leverage event-driven architectures, including Kafka-based data streams.
Implement performant asynchronous data loading strategies utilizing promises, concurrency patterns, and modern browser capabilities.
Optimize application performance, responsiveness, and scalability across multiple operating environments.
Participate in architecture discussions and contribute to technical design decisions.
Conduct code reviews and promote software engineering best practices.
Mentor junior developers and contribute to the overall growth of the engineering team.
Participate in Agile ceremonies and continuous improvement initiatives.