User Interface; UI Developer

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.

• 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 Sec Dev Ops  culture.
• Oversee the deployment of the UI application into Kubernetes (K8s) environments.

• 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 Sec Dev Ops  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)

• 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

Send an email to to apply.

Mid‑Senior level

Full‑time

Engineering and Information Technology

IT Services and IT Consulting