Voip Support Engineer

Want to be part of a dynamic and disruptive company? Want to drive IT and telecom convergence? Join us at NetSF

**ABOUT US**

Network Solutions Factory is the first international center for mobile & fixed networks management and operations located in France.

Initially created to internalize the engineering and operation activities of Salt mobile and fixed network in Switzerland, Network Solutions Factory opened in Lyon in July 2015. Since 2018, we have expanded our operations worldwide with Eir in Ireland, Free Senegal, Epic Cyprus, Epic Malta, Monaco Telecom and recently Tigo in several Latin American countries.

Network Solutions Factory is a multicultural rapidly growing company. Today, we employ around one hundred and fifty employees with a unique combination of telecom, networking and IT skills.

**CONTEXT AND RESPONSABILITIES**:
We are looking for a highly skilled VoIP Support engineer specialized in SIP Solutions for the enterprise market. You will be responsible in the first phase to support the setup and validation of the solution and work with the team to set up all the processes involved in delivering and operating the associated services. Then in the second phase, you will provide support during pre-sales and post sales phases.

You will be responsible for:

- **Technical Support**: Provide level 3 support for VoIP-related issues, working with customers, partners, and internal teams to resolve complex technical problems.
- **SIP Call Analysis**: Monitor, analyze, and debug SIP call flows, identifying and addressing signaling issues
- **Troubleshooting**: Investigate and resolve issues related to SIP registration, call setup, media negotiation (SDP), NAT traversal, and call quality.
- **Configuration Management**: Configure SIP trunks, endpoints, and related network devices such as SBCs (Session Border Controllers), AS (Application Server), PBXs, and VoIP gateways.
- **Testing and Validation**: Conduct end-to-end testing of SIP-based systems, including call flows, feature functionality, and interoperability between devices.
- **Integration**: Support development or implementation of API interfaces to facilitate the provisioning of VoIP service in various management systems.
- **Documentation**: Create and maintain technical documentation, including troubleshooting guides, knowledge base articles, and system diagrams.
- **Collaboration**: Work closely with cross-functional teams, including pre-sales and post-sales support, and other technical teams to understand customer requirements, provide technical expertise at different stage of customer life cycle and resolve critical issues.
- **Customer Training**: Provide technical guidance and training to customers, partners and internal teams on SIP and VoIP technologies.
- **Performance Monitoring**: Utilize monitoring tools to proactively identify and resolve potential issues in SIP-based communication networks

**CANDIDATE PROFILE**

You hold a master's degree in Networking Engineering (BAC+5 equivalent) and have a minimum of 5 years of experience in SIP, VoIP, with at least 2 years in a similar position.

Expected skills and qualities:

- **Technical Expertise**: Strong understanding of SIP, VoIP protocols (RTP, SDP), and related networking concepts. Familiarity with NAT traversal techniques and firewall configurations. Experience with SIP debugging tools.
- **Network Knowledge**: Solid understanding of TCP/IP, DNS, and QoS in VoIP environments. Experience with SBCs, routers, and firewalls in SIP deployments.
- **Problem-Solving Skills**: Ability to troubleshoot complex SIP signalling and media issues effectively. Experience working with SIP trunks, hosted PBX, or Unified Communications platforms (MS Teams, Webex ).
- **Communication Skills**: Strong written and verbal communication skills, with the ability to explain technical concepts to non-technical stakeholders. Customer-focused mindset with the ability to remain patient under pressure.
- **Tools and Platforms**: Familiarity with VoIP systems such as Ribbon, Cisco Webex and Microsoft Teams.
- **Languages**: Very good oral and written communication in English. French and German are a plus.

**WORKING AT NETSF**
- Permanent position (French CDI)
- An attractive salary based on your profile and experience

And many other benefits:

- Meal vouchers subsidized at 59,89% by NetSF, up to €11
- Annual Vacation Bonus;
- Family health insurance, subsidized at 75% by NetSF;
- Provision of additional health insurance;
- Profit-sharing and employee savings plan;
- A friendly work atmosphere: monthly breakfast, internal newsletter, fruit basket, free coffee and tea, etc
- Transport allowance and sustainable mobility package;
- Home office (with a compensatory allowance) up to 3 days a week
- International work environment;
- Extra days off (French RTT) per year

Type d'emploi : Temps plein, CDI
Statut : Cadre

Rémunération : 40 000,00€ à 60 000,00€ par an

Avantages:

- Prise en charge du transport quotid