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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Front-End UI Engineer - **Company:** Eiden Systems Corporation - **Location:** Sterling, VA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Geographic Information Systems, Apache ActiveMQ, Application Programming Interfaces (APIs), Agile Methodology, Advanced Message Queuing Protocol, Component-Based Software Engineering, HTML5, Browser Compatibility, Cascading Style Sheets (CSS), Code Review, Continuous Integration, Data as a Services, Data Visualization, Software Debugging, Software Design Patterns, Middleware, GIS Applications, Protocol Buffers, Design of User Interfaces, Enterprise Messaging Systems, Message Queuing Telemetry Transport (MQTT), OpenLayers, Performance Tuning, RabbitMQ, Swagger, Software Engineering, Data Streaming, TypeScript, Web Applications, WebSocket, WebGL, WebRTC, ZeroMQ (Concurrent Programming Libraries), Openapi, ReactJS, Ios Frameworks, Backend, Gitlab, Vue.js, AngularJS, Material UI, Information Technology, Data Analytics, Real Time Data, Apache Kafka, Front End Software Development, React Redux, Restful APIs, Grpc, Software Version Control - **Published:** July 15, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9031343/front-end-ui-engineer ## About the Role * Active Top Secret (TS) clearance (TS/SCI preferred). * Bachelor's degree in Computer Science, Software Engineering, or a related technical field. * 3+ years of professional front-end software development experience * Strong expertise with JavaScript, TypeScript, HTML5, and CSS3. * Experience with modern front-end frameworks such as React, Angular, or Vue.js. * Experience developing responsive, component-based web applications. * Experience integrating front-end applications with RESTful APIs. * Experience developing geospatial user interfaces, interactive mapping applications, or working with GIS data formats. * Familiarity with real-time data integration and messaging technologies such as Apache Kafka, RabbitMQ, ActiveMQ, or ZeroMQ. * Experience consuming serialized data formats such as Protobuf. * Proficiency using GitLab or similar version control platforms. * Strong understanding of UI performance optimization, debugging, and modern web development best practices., * Experience supporting U.S. Army, NGA, DoD, or other mission-focused programs. * Experience building geospatial applications using CesiumJS, OpenLayers, Leaflet, Mapbox GL JS, or WebGL. * Experience with state management libraries such as Redux, Zustand, or Pinia. * Familiarity with real-time communication technologies including WebSockets, gRPC, MQTT, DDS, or AMQP. * Experience with API documentation tools such as Swagger/OpenAPI. * Knowledge of secure software development practices for classified environments. * Experience working within Agile/Scrum software development teams. ## Description Eiden Systems Corporation (ESC) is seeking a Top Secret cleared Front-End UI Engineer to join our mission-driven team onsite. In this role, you will design and develop intuitive, responsive, and high-performance user interfaces that enable mission-critical capabilities for the warfighter. You'll work closely with UX designers, back-end engineers, middleware developers, and mission stakeholders to rapidly deliver modern web applications that visualize complex data and support evolving operational requirements. This position is ideal for a developer who enjoys building engaging user experiences, interactive geospatial applications, and data-driven interfaces while collaborating across multidisciplinary engineering teams., * Design, develop, and maintain modern, responsive front-end applications using JavaScript and contemporary UI frameworks. * Build intuitive user interfaces that simplify complex mission data and workflows. * Collaborate with UX designers and software engineers to translate user requirements into highly usable applications. * Develop interactive dashboards, visualization tools, and geospatial mapping interfaces. * Integrate front-end applications with RESTful APIs and real-time backend data services. * Consume and display streaming data from middleware and messaging platforms. * Optimize applications for performance, scalability, accessibility, and cross-browser compatibility. * Participate in UI architecture, component library development, and reusable design patterns. * Troubleshoot front-end issues and continuously improve application usability and performance. * Support Agile software development, code reviews, testing, and continuous integration processes. ## Related Videos - [Exploring the Power of gRPC-Gateway for Writing RESTful Services](https://www.wearedevelopers.com/videos/2072-exploring-the-power-of-grpc-gateway-for-writing-restful-services) - [Rendering Design Software in the Browser at Penpot](https://www.wearedevelopers.com/videos/1353-rendering-design-software-in-the-browser-at-penpot) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Boosting OpenSearch Performance: gRPC Search in Action](https://www.wearedevelopers.com/videos/1964-boosting-opensearch-performance-grpc-search-in-action) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 139 - Soft and hard queries](https://www.wearedevelopers.com/magazine/487-dev-digest-139-soft-and-hard-queries) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023)