电信工程师
Telecom Engineer
加入我们，为客户提供愉悦的体验。Five9 是云客服软件领域的领先提供商，将云计算创新的力量带给全球客户。
我们每天践行价值观，打造以团队为先的文化，使我们在享受旅程的同时不断创新、成长并蓬勃发展。我们重视多样性，营造包容的环境，赋能员工做真实的自己。
为了配合我们的快速发展，我们正在积极寻找一位经验丰富的高级电信工程师，全职加入我们的云运营团队。理想的候选人应曾在 24/7 生产支持环境中工作，并具备扎实的 VoIP、SIP 和 RTP 知识。
该职位可在英国任何地方办公。
**主要职责**
- 直接与客户的电信工程师和 IT 团队对接，部署定制化解决方案并排查问题；
- 协助日常电信网络运维支持，分析影响网络可用性和客户质量报告的问题；
- 作为网络运营中心的联络点，解决由 SBC 生成的关键警报，分析电信相关事件的历史并采取预防措施；
- 协助日常电信网络运维，必要时分析影响网络可用性和客户/供应商服务质量的问题；
- 对服务中断进行根本原因分析；
- 响应电信警报和告警，并与网络运营中心协调提供纠正措施；
- 按需创建技术文档和呼叫流程图；管理电信服务提供商及供应商；根据需要在电话网络上部署硬件和软件；
- 部署新服务，包括与电信运营商和客户的互操作性测试；
- 在影响网络可用性和/或服务质量的紧急情况中提供紧急援助和技术恢复；
- 参与轮班应急响应。
**要求**
- 3 年以上电信工程师经验，涉及 VoIP/SIP 语音应用。
- 必须具备语音和数据通信的详细、实际和理论知识，包括传统交换、信令和路由系统，如 SIP、TCP/IP、MPLS 等。
- 具备 Ribbon SBC 和 PSX 的经验。
- 熟悉 VoIP 原理。
查看英文原文
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.
To complement our rapid growth, we are actively sourcing for an experienced Senior Telecom Engineer to join our cloud operations organization on a full-time basis. The ideal candidate is someone who has worked in a 24/7 production support environment and has a strong working knowledge of VoIP, SIP, and RTP.
This position is based anywhere in the UK.
**Key Responsibilities**
- Interface directly with customer’s telecom engineers and IT teams to deploy customized solutions and trouble shoot issues;
- Assist int the day-to-day operational support of the Telecommunications network, analyzing problems affecting network availability and customer quality reports;
- Escalation point of contact for the Network Operations Center to resolve critical alerts generated by the SBC’s Analyze history of telecommunication related incidents and perform preventive measures;
- Assist in the day-to-day operation of the telecommunications network, where necessary analyzing problems affecting network availability and customer/vendor service quality;
- Provide root-cause analyses on service outages;
- Respond to Telecom alerts and alarms and provide corrective actions in coordination with the Network Operations Center;
- Create technical documentation and call flow drawings as needed Manage Telecommunications Service Provider & Vendors Implement hardware and software deployments on the telephony network as required;
- Deploy new services including interop testing with telecom carriers and customers;
- Provide emergency assistance and technical recovery in the event of an emergency situation affecting the availability and/or service quality of the network;
- Participate in on-call emergency rotation.
**Requirements**
- 3+ years of telecom engineer experience with VoIP/SIP voice applications.
- Must have a detailed, working and theoretical knowledge of voice and data communications, including traditional switching, signaling and routing systems to include SIP, TCP/IP, MPLS etc.
- Experience with ribbon SBCs and PSX.
- Working knowledge of VoIP principles, protocols and CODECs such as H.248, SIP, G.711, G.729, WebRTC, MPLS, VPN, UDP, RTP, MTP etc.
- Knowledge of SIP call routing, Least Cost Routing, Security Controls (TLS, IPSEC, ACLs) with Session Border Controllers.
- Knowledge of telecom principals and terminology including DIDs, Toll Free numbers, LATA OCN and NPA-NXX etc.
- Experience with International Routing including ITFS, iDID’s and local termination policies Ability to build, interop and maintain direct connect SIP Trunks to customers and carriers.
- Review, Assess, Critique and Implement Telecom Architecture design changes in Lab and Production environments.
- Excellent organizational and follow-through skill sets are essential.
- Ability to document, troubleshoot and resolve a multifaceted and complex Global voice network.
- Maintain the telephony environment to assure delivery of Cloud applications, voice and customer connectivity and availability to target 99.99% SLA.
- Experience with Softswitch, Session Border Controllers (preferably Sonus/Ribbon, Audio Codes), SIP proxies, Media Servers (preferably AudioCodes IPM-6310 and FreeSWITCH).
- In depth knowledge of Wireshark, Empirix or other network protocol analyzers Ability to capture and analyze RTP streams as related to voice quality traditional KPI’s such as MOS, Jitter, Latency, Packets Loss.
- Ability to execute and use intermediate level Linux/Unix system administrator commands.
- Excellent working knowledge of telecommunications, maintenance processes and systems.
- Proven ability to resolve complex issues in an efficient and timely manner and provide clients with consultative explanations and advice.
- Self-starter with excellent troubleshooting skills and ability to prioritize tasks and organize workflow accordingly.
- Excellent verbal and written communication skills are required Excellent documentation skills are required.
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.
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View our privacy policy, including our privacy notice to California residents here: [https://www.five9.com/pt-pt/legal](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.