Five9

Senior Software Engineer - Frontend UI

Five9
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15 days ago
Chennai, IndiaSenior

Responsibilities

  • Build and ship agent desktop features using React, TypeScript, and Nx.
  • Review and approve pull requests while improving application quality through constructive feedback.
  • Mentor fellow engineers and help establish the team’s technical standards.
  • Contribute to architectural decisions and async planning through documentation, Jira, and Confluence.
  • Collaborate with engineering, product, design, service owners, and other stakeholders across distributed time zones.
  • Participate in on-call coverage aligned with Pacific working hours.

Requirements

  • Strong proficiency with React and TypeScript.
  • Experience with Jest and/or Playwright and an understanding of thorough test coverage.
  • Ability to work autonomously and make reasonable technical decisions on a small, fast-paced team.
  • Strong written communication and collaboration skills in a remote, async-first environment.
  • Experience conducting code reviews, mentoring less experienced engineers, and providing constructive feedback.
  • Prior experience using AI coding tools and willingness to continue developing those skills.
  • Bachelor’s degree or equivalent in a relevant discipline.
  • Ability to work hours overlapping with Pacific working hours and participate in on-call responsibilities.
  • Experience with Vue, Angular, or Svelte is a plus.
  • Familiarity with TanStack Query, Zustand, WCAG, monorepo or micro-frontend architectures, PNPM, Lerna, WebSockets, or real-time application development is desirable.
  • Experience in CCaaS, agent desktop, or UI platform roles is desirable.

Benefits

  • Team-first, diverse, and inclusive work environment.
  • Remote, async-first collaboration with a distributed team across Australia and the US.
  • Working schedule must include overlap with Pacific working hours.
  • On-call participation is required.

Tech Stack

AngularJestReactSvelteTypeScriptVue.js

Categories

Five9

About Five9

1,001-5,000 employees

Five9 builds cloud contact center software (CCaaS) for enterprises to manage voice and digital customer interactions, powered by AI for routing, automation, and analytics. It sells its platform as SaaS with modules for IVR, outbound dialers, agent desktop, workforce engagement, and CRM integrations such as Salesforce and ServiceNow. The company is headquartered in San Ramon, CA, serves 2,500+ customers globally, and is a public company listed on Nasdaq (also BMV).

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