User Interface (UI) Developer

RMantra Solutions; Ashburn, Northern (VA, KY); Hybrid; USD 110,000 - 170,000; Full time

Job summary

RMantra Solutions is seeking a Senior Angular UI Developer to spearhead the greenfield UI for real-time systems. You will design, build, and deliver scalable interfaces while collaborating with Java teams and aligning with Kubernetes deployment practices.

The role requires deep Angular expertise (v2+), strong leadership, and experience in a cloud-ready, component-based frontend. You will drive testing strategies, mentor peers, and contribute to an efficient, secure development lifecycle.

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
• US citizenship and CBP background suitability required
• Experience with Agile Scrum and SecDevOps environments
• Experience with containerized apps (Docker, Kubernetes)
• 4+ years’ experience with Angular (v2+) and component-based architecture
• Experience building cloud-ready applications
• Experience with RESTful APIs and Microservices
• Familiarity with JWT for authorization

Responsibilities

• Lead the design, development, and deployment of a new Angular UI application from inception to production
• Define and enforce UI development best practices, standards, and architecture
• Collaborate with Java backend teams to align API requirements and integration
• Drive comprehensive unit, integration, and end-to-end testing strategies
• Architect scalable, maintainable front-end solutions for growth
• Mentor junior developers and foster technical excellence
• Ensure UI performance, responsiveness, and user experience
• Work within Agile Scrum and contribute to SecDevOps culture
• Oversee deployment of UI applications into Kubernetes environments

Skills

Leadership

Mentoring

Agile Scrum

SecDevOps

UI architecture

Performance optimization

Cross-team collaboration

Frontend testing

Education

BS/BA or Master’s degree in a related field

Tools

Angular

Kubernetes

Docker

REST APIs

JWT

React.js

Webpack

Job description

Hybrid

**This position REQUIRES onsite support in Ashburn, VA, 2 times a week**

Work Location

Ashburn, VA

In this hands-onUser Interface (UI) Developerposition, you will work collaboratively to architect, design, build, deliver, and enhance the user interfaces for highly available, scalable, real-time systems. You will exercise your judgment in determining and recommending the best designs based on customer business objectives, timelines, and other resource constraints. You will participate in and/or direct major deliverable of projects through all aspects of the software development life cycle including scope and work estimation, architecture and design, coding, and unit testing.

We’re looking for a highly skilled and experienced Senior Angular UI Developer to lead the greenfield development of a critical user interface application. This role demands a visionary who can build a robust, scalable, and testable UI from the ground up, ensuring it adheres to the highest standards of best practices. You’ll be instrumental in shaping the future of our front‑end architecture, working closely with backend Java teams, and ensuring seamless deployment within a Kubernetes environment.

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
• 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+), demonstrating a deep understanding of its core principles, component‑based architecture, routing, services, and state management.
• Experience with front‑end build tools and package managers (e.g., Webpack, Babel, NPM, Node.js).
• Designing and implementing user interfaces using React.js, including building reusable components and managing application state.
• 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 more 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.

Join a dynamic team where your ideas matter and your career thrives.