Location: Mexico City, Mexico

Work Model: Hybrid – 3 days onsite

Employment Type: Full-time

About the Opportunity

We are looking for an experienced IMS Engineer – Mobile Network to join an exciting telecommunications project in Mexico City.

The idóneo candidate will bring hands-on expertise in IMS Core networks, VoLTE services, network integration, and troubleshooting, preferably within Nokia environments.

Key Responsibilities

- Design, integrate, configure, commission, and troubleshoot IMS Core network solutions.
- Support IMS/VoLTE/VoWiFi/VoNR deployments, migrations, and network rollouts.
- Design and implement virtualized network functions (VNF/CNF), including capacity planning and OpenStack/OpenShift environments.
- Analyze signaling logs, traffic traces, network configurations, and call flows.
- Troubleshoot IMS components, including P-CSCF, I-CSCF, and S-CSCF.
- Develop technical documentation, including HLDs, LLDs, implementation procedures, and MOPs.
- Support acceptance testing, network optimization, and operational handovers.
- Collaborate with technical teams and customers to identify risks and deliver project milestones.





Required Qualifications

- Degree in Telecommunications, Electronics, Computer Science, Networking, or a related discipline.
- Strong hands-on experience with IMS Core architecture, integration, and troubleshooting.
- Solid knowledge of VoLTE, SIP, Diameter, RTP/RTCP, and IMS call flows.
- Experience in LTE, EPC, 3G/4G/5G, and associated 3GPP protocols.
- Experience configuring, commissioning, and troubleshooting IMS network elements.
- Ability to analyze traffic traces, signaling issues, and voice quality problems.
- Strong troubleshooting, communication, and technical documentation skills.
- Fluent Spanish and proficient English.

Preferred Qualifications

- Experience with Nokia IMS Core solutions, including TAS, CFX 5000, ENUM, MSS, and MGW.
- Experience with VoWiFi, VoNR, roaming, and eSRVCC.
- Familiarity with OpenStack, OpenShift, Kubernetes, containers, and virtualized network functions.
- Experience with network automation tools and cloud-native telecom environments.

📌 IMS Engineer (Ciudad de México)
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📍 Ciudad de México