Sr Software Engineer UI

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.

Role Overview

Were looking for a talented Frontend Engineer who leads with UI but isnt afraid to go deep. You thrive in a fast moving environment ship polished interfaces with TypeScript and React and embrace AI-assisted development as a core part of your workflow. This role is front-end-first but the expectation is that youll grow into full stack ownership over time.

How You Contribute

• Design and build responsive performant UIs usingReactTanStackZustandTypeScript and/or JavaScript

• Collaborate on feature development end-to-end gradually taking on backend work as you grow

• UseGitLabfor version control CI/CD pipelines merge request workflows and issue tracking

• Deploy and manage workloads onGoogle Cloud Platform CDN working alongside with services like GKE and Cloud Storage

• LeverageAI-assisted (vibe coding)tools to accelerate development yourecomfortable using Copilot Cursor Claude or similar tools as a force multiplier

• Write clean maintainable code with strong typing andcomponentreuse in mind

• Partner closely with designers and product to translate specs into real shippable experiences

• Participate in code reviews retrospectives and architectural discussions

Required Skills and Qualifications

• 5 years of post-internship experience with React and TypeScript.

• Solid JavaScript/ TypeScript HTML CSS

• Knowledge ofUI Component Libraries Web Accessibility Internationalization

• Ability to work with testlibraries (Jest Playwright)

• Proficient in ReactTanStackZustand

• Engineering focus

• Overall system knowledge

• Working knowledge ofJira GitLab Visual Studio CI/CD

• Proficient in Google Cloud Platform KubernetesBigQuery Cloud SQL CDN

• Ability to use Claude Code

Desirable Qualifications

• AI Tools

• Micro Front End Architecture

• Java/Springboot

• Database SQL/ NoSQL

Five9 embraces diversity and is committed to building a team thatrepresentsa variety of backgrounds perspectives and skills. The more inclusive we are the better we are. Five9 is an equal opportunity employer.

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds perspectives and skills. The more inclusive we are the better we are. Five9 is an equal opportunity employer.

View our privacy policy including our privacy notice to California residents here: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.