Senior Front-End Engineer SME – Lead UI Architect (Hybrid, DC)

Applied Information Sciences, Inc.; Washington, Northern (District of Columbia, KY); Hybrid; USD 117,000 - 177,000; Full time

Job summary

Applied Information Sciences, Inc. is seeking a Senior Front End Engineer SME to architect, build, and optimize modern user interfaces for mission‑critical applications.

You will lead scalable front‑end solutions using React, TypeScript, JavaScript, and AWS-hosted environments, ensuring seamless integration with .NET services. You will mentor mid‑level developers, set engineering standards, and champion accessibility and performance.

Qualifications

• Active Top-Secret clearance; SCI eligibility.
• 8+ years frontend experience with React, JavaScript, TypeScript, and Node.js.
• Advanced HTML, CSS, Sass, and responsive design skills.
• Experience consuming REST APIs and handling JSON/XML data.
• Proficient with Git and GitLab for source control and reviews.
• Ability to design, refactor, and maintain scalable frontend architectures in AWS.
• Familiar with YAML and CI/CD pipelines (GitLab CI preferred).
• Experience integrating with .NET APIs or full-stack environments.

Responsibilities

• Lead design and development of responsive, high‑performance UIs using React, TypeScript, HTML, and CSS.
• Architect modular, scalable UI components and libraries aligned with modern standards.
• Mentor mid‑level and junior frontend developers, reviewing code and coaching.
• Integrate frontend with .NET back‑end services via REST APIs.
• Drive client‑side state management, performance tuning, and accessibility.
• Collaborate with designers, backend engineers, and product owners for end‑to‑end functionality.
• Establish coding standards, quality controls, and reviews across the frontend codebase.
• Use Git and GitLab for version control, branching, and merge requests; oversee CI/CD.
• Troubleshoot UI issues across environments, browsers, and platforms; provide root‑cause analysis.
• Operate in AWS cloud environments; support deployments and environment troubleshooting.

Skills

React

TypeScript

JavaScript

Node.js

AWS

REST APIs

Mentoring

Frontend architecture

Tools

Git

GitLab

CI/CD

AWS

Jira

Job description

Applied Information Sciences, Inc. is seeking a Senior Front End Engineer SME to architect, build, and optimize modern user interfaces for mission‑critical applications.

You will lead scalable front‑end solutions using React, TypeScript, JavaScript, and AWS-hosted environments, ensuring seamless integration with .NET services. You will mentor mid‑level developers, set engineering standards, and champion accessibility and performance.