UI/UX JavaScript ES6+ and React.js Developer (536)

JOHNSON SERVICE GROUP; San Francisco (CA); Hybrid; USD 83,000 - 96,000; Full time

Job summary

Johnson Service Group is seeking a Senior UI/UX JavaScript (ES6+) Developer to lead frontend architecture for enterprise-scale applications in the San Francisco Bay Area. Hybrid work model with 3-4 days onsite enables collaboration with product and design teams to deliver scalable, high-performance interfaces.

You will drive UI standards, build reusable component libraries, and mentor developers while ensuring accessibility, security, and performance best practices across dashboards and

Qualifications

• 10+ years frontend development experience.
• 5+ years with React.js and frontend architecture.
• Experience leading UI architecture initiatives.
• Azure cloud and DevOps experience.
• Agile development experience.
• Proficient in TypeScript, JavaScript (ES6+), HTML5, CSS3.
• Experience with Material UI, Styled Components, Webpack, Storybook.
• Expertise in state management (Redux, Zustand, Context API).
• Experience building enterprise component libraries and design systems.
• Strong performance optimization and handling large dashboards.
• Knowledge of accessibility (WCAG) and security best practices.
• Experience with Jest and React Testing Library; REST API integration.
• Knowledge of CI/CD pipelines and Docker.

Responsibilities

• Lead the design and development of UI components using React.js.
• Define and maintain frontend standards, best practices, and coding guidelines.
• Drive reusable component libraries and design systems adoption.
• Architect scalable UI solutions for enterprise applications.
• Optimize frontend apps for performance, scalability, and responsiveness.
• Lead responsive design and cross-browser compatibility initiatives.
• Collaborate with backend and UX teams; conduct reviews to maintain quality.
• Mentor developers and provide technical guidance on frontend implementation.
• Maintain frontend documentation and UI architecture standards.

Skills

Frontend development

React.js

Frontend architecture

Azure DevOps

Agile development

TypeScript

JavaScript ES6+

HTML5

CSS3

Redux

Context API

Web performance

Accessibility WCAG

Jest

REST API integration

CI/CD pipelines

Docker

Storybook

Education

Bachelor’s degree in Computer Science or related field

Tools

Next.js

Webpack

Material UI

Styled Components

Storybook

Jest

React Testing Library

Docker

Azure

Job description

Johnson Service Group (JSG) is currently looking for a Senior UI/UX JavaScript (ES6+) Developer with extensive React.js and frontend architecture experience. This is an opportunity with an enterprise organization to lead frontend architecture, establish UI standards, and deliver scalable, high-performance applications. (Hybrid 3-4 days, San Francisco, Bay Area)Must Have skills10+ years frontend development5+ years working with React.js and frontend architectureExperience leading UI architecture initiativesAzure cloud and DevOps experienceAgile development experienceProficient in TypeScript, JavaScript (ES6+), HTML5, CSS3Experience with Material UI, Styled Components, Webpack, StorybookExpertise in state management (Redux, Zustand, Context API)Experience building enterprise component libraries and design systemsStrong understanding of performance optimization techniquesExperience with large datasets and dashboardsKnowledge of accessibility (WCAG) and security best practicesExperience with testing frameworks like Jest and React Testing LibraryExperience with REST API integrationKnowledge of CI/CD pipelines and DockerNice to Have skillsNext.js experienceMicro frontend architectureData visualization librariesFinancial domain exposureResponsibilitiesLead the design and development of UI components using React.js.Define and maintain frontend standards, best practices, and coding guidelines.Drive the development and adoption of reusable component libraries and design systems.Architect scalable UI solutions for enterprise applications.Optimize frontend applications for performance, scalability, and responsiveness.Lead responsive design and cross-browser compatibility initiatives.Collaborate closely with backend development and UX teams.Conduct code and design reviews to maintain quality and architectural consistency.Mentor developers and provide technical guidance on frontend implementation.Maintain frontend documentation and UI architecture standards.Other InformationBachelor’s degree in Computer Science or a related field.Role combines hands-on frontend development with technical leadership across UI initiatives.Experience leading UI architecture initiatives is preferred.Relevant React or Azure certifications are preferred.Pay Range- $60.00-70.00 per hour contract onlyJohnson Service Group (JSG) is an Equal Opportunity Employer. JSG provides equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, marital status, protected veteran status, or any other characteristic protected by law.#LI-KS1#D480