User Interface (UI) Developer Job at RMantra Solutions in Reston

User Interface (UI) Developer RMantra Solutions Location: Ashburn, VA (Onsite support required twice a week) US Citizens ONLY. Clearance: DoD TS or DHS Full BI. Work schedule: Hybrid. In this hands‑on position you will architect, design, build, deliver, and enhance user interfaces for highly available, scalable, real‑time systems. Responsibilities Lead the design, development, and implementation of a new, complex Angular UI application from inception to deployment. Define and enforce UI development best practices, coding standards, and architectural guidelines. Collaborate closely with Java backend developers to understand API requirements and ensure seamless integration. Drive thorough unit, integration, and end‑to‑end testing strategies for the UI application. Architect and implement scalable and maintainable front‑end solutions, considering future growth and evolving business needs. Mentor junior developers and foster a culture of technical excellence within the UI team. Ensure the UI application is optimized for performance, responsiveness, and user experience. Work within an Agile Scrum methodology and contribute to a SecDevOps culture. Oversee the deployment of the UI application into Kubernetes (K8s) environments. Basic Qualifications BS/BA degree and 12 years of related experience or Master’s with 10 years of related experience; OR 4 years of related experience in lieu of degree Must be able to maintain and obtain a CBP Background Investigation prior to start Must be a US citizen 7+ years of experience in front‑end development, with at least 5 years focused on modern JavaScript frameworks Experience with Agile Scrum methodology and working in a SecDevOps environment Experience working with containerized applications (Docker, Kubernetes) Proven experience leading UI projects and building applications from the ground up. 3+ years’ experience developing cloud ready applications 4 years of hands‑on experience with Angular (version 2+) Experience with front‑end build tools and package managers (e.g., Webpack, Babel, NPM, Node.js). Designing and implementing user interfaces using React.js Proficient in HTML5, CSS3, and JavaScript (ES6+) Demonstrated experience working with RESTful APIs and Microservices, including expertise with HTTP request libraries like Axios. Familiarity with the Java backend ecosystem and common patterns for UI/backend integration Solid understanding of modern authorization mechanisms, such as JSON Web Token (JWT) Preferred Qualifications Strong understanding of React’s core principles, concepts, and workflows Hands on working experience with NgRx for complex state management. Hands on experience with current specifications of EcmaScript (ES6) Experience with common front‑end development tools such as Babel, Webpack, NPM, Node etc. Experience with UI testing frameworks (e.g., Jasmine, Karma, Jest, Cypress). A strong portfolio or examples of previous Angular applications developed from scratch. Experience with UI/UX design principles and best practices. Demonstrated ability to benchmark and optimize UI application performance. Familiarity with CI/CD pipelines for front‑end applications. Familiarity with real‑time UI monitoring tools. Active Full CBP BI Experience with Google Cloud Contact Send an email to HR@rmantras.com to apply. Senior Level Mid‑Senior level Employment Type Full‑time Job Function Engineering and Information Technology Industries IT Services and IT Consulting #J-18808-Ljbffr