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We are looking for an Integration Engineer – IMS & UDM to design, integrate, configure, upgrade, and maintain telecom solutions within customer networks. You will combine hands-on engineering with customer engagement and end-to-end delivery ownership, working across IMS, UDM, subscriber data, 4G/5G Core, and cloud-native environments. You will collaborate with customer technical teams, product experts, support organizations, and project stakeholders to successfully introduce and maintain services in live networks.
What you will do:
- Engage with customers to understand requirements, resolve technical issues, present solutions, and coordinate implementation activities.
- Analyze network architecture, interfaces, capacity, dependencies, and operational constraints.
- Prepare and execute HLD, LLD, MoP, implementation, testing, upgrade, and rollback plans.
- Integrate and configure IMS and UDM network functions with surrounding systems.
- Perform software upgrades, patches, migrations, feature activation, and post-change validation.
- Verify licenses, subscribers, interfaces, redundancy, alarms, counters, and operational procedures.
- Troubleshoot signaling, configuration, performance, and service issues across SIP, Diameter, SS7/SCCP, HTTP/2, REST/SBA, TLS, and IP.
- Analyze logs, traces, alarms, counters, and packet captures to determine root causes and corrective actions.
- Support 4G/5G Core, VoLTE, VoNR, VoWiFi, roaming, interworking, and subscriber authentication use cases.
- Work with virtualized and cloud-native environments, including Kubernetes and CNF/VNF.
- Support customer acceptance testing, handover, knowledge transfer, and production stabilization.
- Participate in planned maintenance windows, production changes, migrations, failover testing, and service restoration when required.
The skills you bring:
- Bachelor’s degree in Telecommunications, Computer Science, IT, Computer Engineering, or a related field.
- Professional telecom integration experience, preferably within IMS, UDM, EPC/5GC, HSS/HLR, subscriber data, or service platforms.
- Strong knowledge of IMS technologies such as CSCF, TAS/Application Servers, SBC, and HSS/HLR.
- Experience with subscriber-data technologies such as UDM, UDR/UDSF, AUSF, HSS-FE, HLR-FE, CCDM, or CCSM.
- Hands-on experience with configuration, integration, upgrades, patching, feature activation, and troubleshooting.
- Good understanding of SIP, Diameter, SS7/SCCP, HTTP/2, REST, DNS, TCP/IP, TLS, and PKI.
- Strong IP networking knowledge, including routing, VLANs, firewalls, load balancing, DNS, and high availability.
- Experience with Kubernetes, CNF/VNF, virtualization, or cloud-native telecom environments is highly valued.
- Experience with VoLTE, VoNR, VoWiFi, roaming, 5G Core, or subscriber-data migration is an advantage.
- Strong customer-facing communication, problem-solving, and delivery ownership.
- Ability to work independently and collaborate with distributed teams.
- Willingness to support night/weekend maintenance windows and on-call activities when required.
Primary country and city: Saudi Arabia (SA) || Riyadh
