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Job Title: Senior Front-End Engineer 

Location: Hybrid reporting to Vienna or Winchester, VA, Pensacola, FL or San Diego, CA

Hours: Monday – Friday, 8:00 AM – 4:30 PM

Pay Rate: Open to Both C2C and W2 options 

Position Type: Multiyear Contract

Overview

We are seeking a Senior Front-End Engineer with deep expertise in Angular 17+, modern web technologies, and enterprise-scale UI development. The ideal candidate combines strong technical expertise with a passion for user experience, accessibility, scalability, and engineering excellence. This individual will partner closely with Product, UX, Architecture, and Engineering teams to deliver consistent, responsive, and maintainable user experiences across web applications while helping establish front-end standards and best practices.

Responsibilities

Design, develop, and maintain responsive, accessible, and performant web applications using Angular and modern web technologies.

Build reusable UI components, libraries, and frameworks that promote consistency and scalability across Digital platforms.

Partner with UX designers, architects, and application teams to translate designs into high-quality user experiences.

Establish and maintain enterprise design system components, patterns, and styling standards.

Drive front-end architecture decisions and provide technical leadership on complex initiatives.

Conduct code reviews and promote best practices for maintainability, performance, accessibility, and security.

Collaborate with backend and platform engineering teams to integrate REST APIs and shared services.

Build and maintain CI/CD processes and automation using Azure DevOps.

Identify and resolve performance bottlenecks, accessibility issues, and technical debt.

Mentor and provide guidance to other front-end engineers.

Participate in production support, troubleshooting, root cause analysis, and operational readiness activities.

Leverage AI-assisted development tools to improve productivity, code quality, testing, and development efficiency.

Help define and enforce front-end development standards, governance, and engineering best practices.

Required Skills & Experience

Expert-level experience developing applications using Angular 17+.

Strong proficiency with TypeScript, JavaScript, HTML5, CSS3, and SCSS.

Experience developing large-scale Single Page Applications (SPAs).

Experience building and maintaining reusable component libraries and design systems.

Experience working with enterprise-scale codebases and shared styling frameworks.

Strong understanding of responsive web design and cross-browser compatibility.

Experience implementing accessible solutions that meet WCAG accessibility standards.

Experience working with REST APIs and integrating frontend applications with backend services.

Experience with Git-based source control, pull requests, and branching strategies.

Experience with Azure DevOps, including Repos, Pipelines, and CI/CD practices.

Experience writing unit, integration, and component tests using frameworks such as Jest, Karma, or similar tools.

Strong understanding of software architecture principles, design patterns, and SOLID principles.

Experience working within Agile delivery teams.

Familiarity with AI-powered development tools (e.g., GitHub Copilot, AI-assisted code generation, testing, and debugging).

Preferred Qualifications

Experience with NX Monorepo architecture and workspace management.

Experience with Storybook or similar component documentation tools.

Experience with Bootstrap, ng-Bootstrap, or similar UI frameworks.

Experience integrating third-party components into enterprise design systems.

Knowledge of frontend performance optimization techniques and observability tools.

Experience supporting digital banking or financial services applications.

Experience contributing to platform modernization initiatives.

Technical Stack

Angular 17+

TypeScript

JavaScript

HTML5

CSS3 / SCSS

Azure DevOps

Git

REST APIs

NX Workspace

Storybook

Bootstrap / ng-Bootstrap

System One is a leading provider of specialized, highly technical services and solutions to critical infrastructure, technology, life sciences, and government sectors. We partner with large private and public organizations who trust us to execute their complex, mission-critical initiatives through our outsourced services and workforce solutions.