or apply directly on Five9's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 80 days Five9's roles stay open a median of 80 days
- Reposted
- No
- Salary listed
- No 0% of Five9's roles list one
- Ghost-job risk at Five9
- high 123 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
- 2026-10-22
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 Telecom Engineer at Five9, you will be responsible for deploying customized telecom solutions, providing operational support, and troubleshooting issues within the telecommunications network. Your role will involve direct interaction with customers' telecom engineers, managing service providers, and ensuring network availability while participating in an on-call emergency rotation.
- benefits
- 1/5
- freshness
- 1/5
- career value
- 4/5
- role clarity
- 5/5
- 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 telecom engineer experience with VoIP/SIP voice applications
- Detailed knowledge of voice and data communications including SIP, TCP/IP, MPLS
- Experience with ribbon SBCs and PSX
- Working knowledge of VoIP principles, protocols, and CODECs such as H.248, SIP, G.711, G.729, WebRTC
- Knowledge of SIP call routing, Least Cost Routing, and Security Controls
- Experience with International Routing including ITFS and local termination policies
Worth weighing
- No salary listed
- Role requires participation in on-call emergency rotation
- Position is remote but based in the UK
- Focus on telecom engineering may limit exposure to broader IT roles
Summarised from Five9's posting. Read the full original.
Listed by Five9 on their greenhouse job board, last confirmed open on 2026-10-22. PitchMeAI is not the employer.
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