or apply directly on Five9's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 14 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 Software Engineer II at Five9, you will work on developing and enhancing high-performing services for the company's next-generation contact center platform. Your role will involve participating in an Agile Scrum team, writing clean code, and integrating real-time communication protocols with AI services. You will also be responsible for delivering solutions that run in the public cloud, contributing to the overall customer experience.
- 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
- 3+ years of professional experience in software development
- Experience in C and/or C++
- Hands-on experience developing software for real-time communications signaling and media protocols (e.g., SIP, RTP)
- Ability to methodically troubleshoot complex systems
- Excellent communication and organizational skills
- Strong sense of ownership
Nice to have
- Experience with Modern C++ (C++17+)
- Knowledge of RTP/SIP, audio codecs, SIP/SDP
- Experience with ASR/TTS integration
- Familiarity with AI APIs
- Experience with cloud platforms (AWS, Azure, GCP)
Worth weighing
- No salary listed
- The role involves working with modern technologies but also requires troubleshooting complex systems which may involve legacy components.
- The position is hybrid, which may require flexibility in work arrangements.
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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