Sr Full Stack UI Engineer Security Clearance

Position: Staff / Sr Staff Full Stack UI Engineer with Security Clearance
Description Sci Tec, a wholly owned subsidiary of Firefly Aerospace, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance;

space domain awareness; and aircraft survivability missions. Important Notice:
Sci Tec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered. We are seeking a Full Stack Software Engineer to design, develop, and maintain user-facing web applications and supporting backend services for real-time data and geospatial information systems. This role focuses on building reliable, visually intuitive, and high-performance applications that operate continuously in mission-critical environments.

The ideal candidate is comfortable working across the stack-from frontend user interfaces to backend data pipelines-and thrives in a collaborative, Agile development environment. Responsibilities
* Design, develop, and maintain frontend and backend software, including code, tests, and documentation
* Build and integrate user interfaces and data pipelines for real-time and geospatial data visualization
* Design, prototype, and implement user-centric interfaces that translate customer needs into intuitive solutions
* Maintain and improve 24/7 user-facing applications that display, manage, and monitor real-time data
* Identify and resolve software defects and security vulnerabilities
* Collaborate with team members during Agile ceremonies, including standups, sprint planning, and retrospectives
* Contribute to architectural discussions and technical design decisions
* Ensure adherence to software engineering best practices, including code quality, testing, and maintainability
* Support documentation and knowledge sharing across teams
* Perform other duties as assigned
Requirements
* Bachelor's degree in Computer Science, Engineering, Mathematics, Physical Sciences, or a related technical field
* 2+ years of professional experience developing user-facing web applications, including systems that operate continuously (24/7)
* Strong experience with JavaScript, including React, Node.js, and Redux
* Experience developing and maintaining applications that handle real-time data
* Proficiency working in Linux environments and using Git
* Solid understanding of software engineering principles, including modularity, maintainability, and testability
* Strong attention to detail and commitment to high-quality code
* Excellent verbal and written communication skills
* Ability to obtain and maintain a DoD security clearance
Candidates who have any of the following skills will be preferred:
* Advanced degree in Computer Science, Engineering, Mathematics, or Physical Sciences
* Experience with Type Script  
* Experience developing geospatial or mapping applications, including Cesium
* Experience creating or contributing to design systems
* Experience with UI/UX prototyping tools (e.g., Figma, Adobe XD, Axure)
* Experience working across the stack with Python and/or C++
* Familiarity with messaging and streaming technologies, such as:
Protocol Buffers, ZeroMQ, Kafka, gRPC, REST APIs
* Experience with microservice architectures
* Professional experience with Dev Ops and CI/CD tools, including:
Docker, Jenkins, Git Lab CI/CD
* Experience with databases and data stores such as SQL, Postgre

SQL, Redis
* Experience working with remotely sensed data, including OPIR, EO/IR, SAR, Spectral, or RF
* Active DoD security clearance

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