Front-End Engineer II

Front-End Engineer II

Our client seeks a Front-End Engineer II to build and enhance single page applications that support internal systems and user-facing experiences. The role partners with front-end developers, API engineers, designers, and product owners, and contributes to component libraries, testing, accessibility, and code standards. The engineer will mentor associate engineers and interns, work within a scrum team, and apply strong JavaScript fundamentals with React and modern tooling. The environment emphasizes analytics, experimentation, and practical use of AI for development workflows and feature delivery.

This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.

Salary: $110,000 - $120,000/ yr. w2

Responsibilities:

• Develop mobile-first single page applications, primarily with Ember.js, for various devices and environments.
• Convert mockups and wireframes into clean, maintainable, reusable components.
• Maintain and extend JavaScript code and legacy plugins.
• Validate and test for Section 508 accessibility and cross-browser, platform, and device compatibility.
• Lint, evaluate, and unit test JavaScript.
• Write clean, reusable code that adheres to published standards.
• Assist with discovery and diagnosis of bugs in development environments.
• Participate in front-end and scrum team ceremonies.
• Maintain code libraries and document technical specifications.
• Research solutions and contribute to code standards and reviews.
• Mentor associate front-end engineers and interns.

Experience Requirements:

• 3+ years developing and architecting single page applications with a modern JavaScript framework such as Ember, React, Angular, or Vue, integrating RESTful or JSON APIs.
• Demonstrated mobile-first, responsive design implementation.
• Strong skills in HTML, CSS, and JavaScript with emphasis on vanilla JS fundamentals.
• Experience creating reusable components or libraries across applications.
• 1+ year with ES2015+ and Node.js.
• Experience with Gulp.js or similar build tools.
• Experience writing unit, integration, and acceptance/UI tests.
• Experience working in an agile scrum environment.
• Comfort using AI tools as part of development workflows and for solution exploration.
• Proficiency with React for modern feature development and migration from Ember where applicable. No backend work required.

Education Requirements:

• Bachelor's degree in computer science, human-computer interaction, or a related field, or equivalent experience. High school diploma required.