Sr Software Engineer - UI

five9· Core - Product Engineering
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📍 India, Bengaluru (Hybrid)

About this role

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 
 
We're looking for a talented Frontend Engineer who leads with UI but isn't 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 you'll grow into full stack ownership over time. 

How You Contribute 

  • Design and build responsive, performant UIs using React, TanStack, Zustand, TypeScript and/or JavaScript 
  • Collaborate on feature development end-to-end, gradually taking on backend work as you grow 
  • Use GitLab for version control, CI/CD pipelines, merge request workflows, and issue tracking 
  • Deploy and manage workloads on Google Cloud Platform CDN, working alongside with services like GKE, and Cloud Storage 
  • Leverage AI-assisted (vibe coding) tools to accelerate development — you're comfortable using Copilot, Cursor, Claude, or similar tools as a force multiplier 
  • Write clean, maintainable code with strong typing and component reuse 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 of UI Component Libraries, Web Accessibility, Internationalization  
  • Ability to work with test libraries (Jest, Playwright)  
  • Proficient in React, TanStack, Zustand  
  • Engineering focus  
  • Overall system knowledge   
  • Working knowledge of Jira, GitLab, Visual Studio, CI/CD  
  • Proficient in Google Cloud Platform, Kubernetes, BigQuery, 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 that represents a 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: https://www.five9.com/pt-pt/legal.  

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

Frequently Asked Questions

Is the salary disclosed for the Sr Software Engineer - UI position at five9?
The salary for this Sr Software Engineer - UI role at five9 is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Sr Software Engineer - UI position at five9 located?
This Sr Software Engineer - UI role at five9 is based in India, Bengaluru (Hybrid). The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Sr Software Engineer - UI at five9 belong to?
This Sr Software Engineer - UI position is part of the Core - Product Engineering department at five9. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Sr Software Engineer - UI position at five9?
Click the "Apply Now" button on this page. You will be redirected to five9's official application portal hosted on greenhouse where you can submit your application directly.
When was the Sr Software Engineer - UI job at five9 posted?
This Sr Software Engineer - UI position at five9 was posted on Jun 25, 2026. Apply as soon as possible — early applications are often reviewed first.
Sr Software Engineer - UI
five9
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