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Front-End Developer II

MissionStaff

Salary not specified
Oct 9, 2025
PA, US
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MissionStaff is looking to fill a contract Front-end Developer position for their client to build and maintain high-performance, user-centered web applications that deliver exceptional digital experiences.

Requirements

  • Proficiency in React JS, HTML5, CSS3, and modern JavaScript (ES6+).
  • Experience with Next JS, server-side rendering, and Tailwind CSS.
  • Strong understanding of responsive design, accessibility, and web performance optimization.
  • Familiarity with Git workflows and collaborative development environments.
  • Experience with TypeScript, testing frameworks (Jest, React Testing Library, Cypress), or CSS-in-JS solutions.
  • Knowledge of headless CMS, JAMstack architecture, SEO, and Progressive Web Apps (PWAs).

Responsibilities

  • Develop responsive, interactive web applications using React JS, Next JS, and modern JavaScript (ES6+).
  • Write clean, maintainable, and well-documented code following established standards and best practices.
  • Optimize applications for speed, scalability, and performance through techniques such as lazy loading and code splitting.
  • Ensure cross-browser and cross-device compatibility for consistent user experiences.
  • Build reusable UI components and contribute to shared component libraries.
  • Implement and maintain automated testing (unit, integration, and end-to-end).
  • Ensure accessibility compliance (WCAG, ADA) and inclusive design standards.

Other

  • Remote role (EST or CST time zones only)
  • 3+ years of experience in front-end development with strong JavaScript fundamentals.
  • Excellent communication, problem-solving, and teamwork skills.
  • Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience.
  • Portfolio demonstrating strong code quality, performance, and user experience principles.