Five9
cloud contact center software
StaffSoftwareEngineer-Frontend
Neural analysis suggests this role is
optimal for Staff candidates.
“Staff Software Engineer - Frontend at Five9. Skills: React, TypeScript, frontend development, component libraries, design systems, WCAG accessibility, testing frameworks, CI/CD. design, develop, and maintain frontend software solutions. build scalable, reliable, and high-performance frontend applications”
What You'll Achieve.
deliver with efficiency and customer satisfaction; deliver high-quality solutions
Industry & Context.
debugging and problem-solving skills with the ability to investigate and resolve complex application issues
What They're Looking For.
Must Have
7–10 years of frontend development experience with modern web technologies, expertise in React and TypeScript, proficiency in semantic HTML, CSS (preferably SCSS), and JavaScript, Experience building and maintaining component libraries, design systems, and design tokens, expertise in Web Content Accessibility Guidelines (WCAG), Experience with frontend tooling and migration frameworks (preferably Vite and Codemods), Experience with testing frameworks such as React Testing Library, Cypress, Enzyme, and Chromatic, Experience working closely with design teams using Figma, understanding of frontend architecture, application performance optimization, and scalable UI patterns, Understanding of product architecture and modern frontend application design principles, Excellent English communication skills, both verbal and written, with a proactive approach to collaboration, Self-motivated, enthusiastic, and ownership-driven, with a commitment to delivering high-quality solutions, Comfortable leveraging agentic coding tools and AI-assisted development environments to enhance productivity and code quality
Nice to Have
Experience with Tokens Studio and Style Dictionary for managing design tokens, Experience with Storybook, Experience with bundlers such as Rollup, Deep understanding of CORS, CDNs, and i18n, Familiarity with Agile methodologies, JIRA, Confluence, and end-to-end testing practices, Exposure to backend technologies and API-driven architectures
What You'll Do.
and maintain frontend software solutions
and high-performance frontend applications
optimize user experiences
and advance applications and component libraries
software design and development
and WCAG-accessible components
translate Figma designs into production-ready component code
maintain and organize the design token system
continuously improve React component library
implement CI/CD workflows
publish and communicate component library enhancements
drive architectural discussions
influence technical direction across frontend initiatives
provide technical guidance and mentorship
stay current with evolving technologies
evaluate and adopt tools
How You'll Work.
Team & Collaboration
collaborate closely with cross-functional teams including design teams, product managers, UI architects, and frontend developers; partnering with product teams; collaboration with other frontend developers and the design team; knowledge sharing
Communication Scope
Excellent English communication skills, both verbal and written; proactive approach to collaboration
Process & Methodology
strategic planning
Full Job Description
Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide. Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves. The Opportunity As a Staff Software Engineer on the Digital Team, you will design, develop, and maintain frontend software solutions supporting Five9’s digital initiatives. This role focuses on building scalable, reliable, and high-performance frontend applications. Our dedicated team is committed to optimizing user experiences, streamlining workflows, and enhancing productivity across the board. Whether empowering agents with intuitive interfaces, equipping supervisors with powerful management tools, or enabling seamless access to critical applications across multiple platforms, we strive to deliver with efficiency and customer satisfaction. You will be responsible for developing, maintaining, and advancing applications and component libraries across Five9. Responsibilities include software design and development, testing, and documentation across our React component library and applications. A passion for developing consistent, high-quality, and performant user interfaces is essential. The role also involves deep technical exploration of emerging technologies and partnering with product teams to bring innovative ideas into production. In addition, this position plays a key role in mentoring engineers and driving frontend engineering best practices across Five9. What You'll Do • Build reusable, responsive, and WCAG-accessible components for our design system and web applications while translating Figma designs into production-ready component code aligned with design specifications • Maintain and organize the design token system, bootloader, a
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