Senior Diameter Engineer
First seen by Alion on Sep 15, 2026.
Role Summary:
We are seeking an experienced Senior Diameter Engineer to design, implement, optimise, and support carrier-grade Diameter signalling solutions across Data core, Voice, roaming, policy, charging, and subscriber-data environments.
Total Experience: 8-10 years
Key Responsibilities:
- Govern, design, configure, test, and support DRA, DEA, and Diameter signalling platforms in telco networks.
- Manage Nokia and Ericsson Diameter routing, peer, realm, application, traffic steering, topology hiding, overload, and security configurations.
- Integrate DRA with core network functions such as HSS/HLR, UDM, PCRF/PCF, OCS/CHF, TAS, MME/AMF, SBC, roaming hubs, IPX/GRX providers, and partner networks.
- Support LTE/EPC, IMS, VoLTE, VoWiFi, roaming, policy, charging, subscriber authentication, and 4G-to-5G interworking services.
- Analyse traces, logs, alarms, KPIs, peer status, latency, transaction success rates, and capacity trends to maintain service quality.
- Lead incident investigation and root cause analysis for routing failures, peer issues, congestion, roaming faults, charging issues, and IMS signalling incidents.
Tech Stack:
- Platforms: Ericsson DRA/DEA, Nokia DRA/DEA, Ericsson CNIS
- Protocols: Diameter (S6a/S6d, S9, Gx, Gy, Rx, Ro, Cx/Dx, Sh, SWx, SLg, SLh, Sy)
- Technologies: LTE/EPC, IMS, VoLTE, VoWiFi, 4G/5G Interworking, IPX/GRX
- Tools: Wireshark, tcpdump, Linux/Unix CLI, VMware, OpenStack, Kubernetes
Skills
Diameter, LTE, IMS, VoLTE, WIRESHARK, 5G, Signaling Protocols, Network Protocols