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Quadrant Technologies

User Interface Engineer Job at Quadrant Technologies in Bellevue

Quadrant Technologies, Bellevue, WA, United States, 98009


Sr. UI Developer.

Exp Level : 9+ years

Onsite : Bellevue, WA


  • Design, develop, and maintain high-quality, responsive web and mobile applications using React Native and Angular.
  • Collaborate with designers to ensure designs are fully realized and meet user experience standards.
  • Develop reusable components and front-end libraries for future use.
  • Optimize components for maximum performance across a variety of devices and browsers.
  • Ensure application functionality and aesthetics are consistent across platforms.
  • Write clean, maintainable, and well-documented code.
  • Troubleshoot and debug UI issues and improve application performance.
  • Stay up-to-date with emerging trends and technologies in UI development.
  • Mentor junior developers and provide technical guidance and code reviews.
  • Participate in Agile/Scrum development processes, including sprint planning and task estimation.
  • Work closely with backend developers to integrate APIs and services into front-end applications.

Required Skills and Qualifications:

  • Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent work experience.
  • 9+ years of professional experience in front-end/UI development.
  • Expertise in React Native, including state management tools like Redux, MobX, or Context API.
  • Strong proficiency with Angular (latest versions), TypeScript, and RxJS.
  • Solid understanding of HTML5, CSS3, and responsive design principles.
  • Experience with cross-platform mobile application development.
  • Familiarity with version control tools like Git and CI/CD pipelines.
  • Strong problem-solving skills and attention to detail.
  • Experience with RESTful APIs and integrating them into front-end applications.
  • Familiarity with front-end testing frameworks like Jest, Mocha, or Jasmine.
  • Knowledge of UI/UX principles and ability to collaborate with design teams.

Preferred Skills:

  • Experience with Flutter, React Query, or other similar frameworks is a plus.
  • Familiarity with backend technologies like Node.js or Python.
  • Knowledge of cloud platforms (AWS, Azure, or GCP) and serverless architectures.
  • Experience with accessibility standards (WCAG) and internationalization (i18n).
  • Prior experience working in Agile/Scrum environments.
  • Familiarity with performance monitoring tools and techniques for front-end optimization.

Core Competencies:

  • Strong analytical and problem-solving skills.
  • Excellent communication and collaboration abilities.
  • A proactive mindset with the ability to work independently and as part of a team.
  • Ability to handle multiple tasks and meet deadlines in a fast-paced environment.
  • Commitment to delivering high-quality, user-friendly solutions