or apply directly on Five9's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 22 days Five9's roles stay open a median of 45 days
- Reposted
- No
- Salary listed
- No 0% of Five9's roles list one
- Ghost-job risk at Five9
- high 81 stale, 4 reposted of 124 open
- Hiring momentum
- 210 roles opened in the last 90 days ↑ up vs. the prior 90 days
- Last confirmed on the employer's board
- 2026-09-17
Measured from postings appearing on and disappearing from Five9's own greenhouse board since 2026-08-03. Full hiring picture for Five9.
About this role
As a Senior Software Engineer on the Core Applications team, you will be responsible for developing and shipping features for a new agent desktop using a modern stack of React, TypeScript, and Nx. Your role will involve mentoring fellow engineers, conducting code reviews, and contributing to architectural decisions while collaborating with a distributed team across different time zones. This position requires a high level of ownership and autonomy in a fast-paced environment focused on innovation.
- benefits
- 1/5
- freshness
- 4/5
- career value
- 4/5
- role clarity
- 4/5
- pay transparency
- 0/5
Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Five9 as an employer.
What you need
- Strong React and TypeScript proficiency
- Experience with modern frameworks (Vue, Angular, Svelte)
- Testing experience with Jest and/or Playwright
- Ability to operate autonomously on a small, fast-paced team
- Strong written communication and collaboration skills for a remote environment
- Comfortable conducting code reviews and mentoring less experienced engineers
Nice to have
- Prior experience in CCaaS, agent desktop, or UI platform roles
- Familiarity with TanStack Query and Zustand
- Web accessibility knowledge; familiarity with WCAG standards
- Monorepo and micro-frontend architecture experience; Nx preferred
- Experience with WebSockets or real-time application development
Worth weighing
- Working shift must align with Pacific working hours
- Position requires the ability to be On Call
- No direct reports to this role, but collaboration with various teams is essential
Summarised from Five9's posting. Read the full original.
Listed by Five9 on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.
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