Our client, a leading global multinational information technology services and consulting company, is recruiting a Mobile Core / IMS Support Engineer (VoLTE) to join their business in Spain.

Position Title

Mobile Core / IMS Support Engineer (VoLTE)

Position Type

Permanent or Freelancer

Start Date

ASAP

Location

Madrid, Spain

Contact

Franci | +49 89 23 88 98 55

Responsibilities

- Support and execute deployment projects for new solutions and platforms.

- Participate in expansions, upgrades, and evolutions of existing customer projects.

- Provide post-sales technical support for production platforms and services.

- Analyze, troubleshoot, and resolve technical incidents.

- Escalate and follow up complex technical issues until full resolution.

- Coordinate with internal teams, customers, vendors, and other technical stakeholders.

- Prepare and maintain technical documentation, procedures, and reports.

- Participate in an on-call / standby support scheme, depending on service needs.

- Provide remote support and, when required, support planned interventions or emergency activities.

Requirements

The candidate must have strong experience in one or more of the following domains:

Value Added Services (VAS) – SMSC / IN

- Strong experience with Value Added Services platforms, particularly SMSC and Intelligent Network (IN) environments.

- Proven experience in integration, deployment, configuration, and operational support of SMS and IN service platforms.

- Solid understanding of SMS service architecture, routing, and interworking within mobile networks.

- Experience in service provisioning, troubleshooting, and performance analysis in VAS environments.

- Knowledge of signaling protocols related to messaging and IN services (e.g., SS7/MAP, SMPP, Diameter).

Mobile Core (2G3G4G5G) – Packet Core and IMS (VoLTE / VoWiFi)

- Strong technical and functional knowledge of Mobile Core networks, with focus on Packet Switched (PS) Core and IMS-based services.





- Experience with Fixed and Mobile IMS architectures, including VoLTE and VoWiFi service implementation and support.

- Proven experience in integration, deployment, upgrades, and operational support of core network nodes.

- Good understanding of IMS signaling and protocols (e.g., SIP, Diameter) and end-to-end service flows.

- Strong troubleshooting capabilities across mobile core and IMS environments.

Language Requirements

- Fluent Spanish and English are mandatory.

For more details contact

sales(at)manningglobal.com

Quoting reference

ES_MGFH_TE-MC/VAS

Or call Franci on

+49 89 23 88 98 55

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Please note

1. That we do all we can to respond to all applications but if we have not contacted you within 2 days following your application - it's likely we have not shortlisted your cv for the position.

2. Manning Integral cannot consider your application for this role if you are working for the customer we are recruiting for

3. If you are working for the client we are representing, but have confirmation you are leaving a permanent or contract position, please discuss this with us, so we can discuss representation with you.

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📌 Mobile Core / IMS Support Engineer (VoLTE) (Madrid)
🏢 Manning Global
📍 Madrid