Solutions Engineer (SS7 Signalling and IP Routing)
RemoteIndia
Job Summary
Design and configure Signaling, DRA/DEA routing, peers, connections, realms, Diameter identities, and GT/point-code mappings for interconnects. Translate IR.21/RAEX inputs into version-controlled operational configurations and coordinate IP addressing, DNS/ENUM, APN, realm resolution, firewall/ACL, and IPX peering changes. Own end-to-end IREG-side testing for network registration, attach sequences, S6a/S6d authentication, SGd SMS, and NIDD. Analyze signaling traces to resolve failures spanning Skylo, the IPX provider, and partner MNOs, collaborating with internal Network Engineering, NOC, Security, Product, and external MNO teams. Establish clean change-control, peer-review, rollback, and documentation practices, creating Low-Level Design documents for every interconnection. This fully remote role supports the commercial NTN vRAN platform bridging terrestrial and satellite networks for mass-market consumer, automotive, and industrial IoT applications.
Required Qualifications
- 10+ years of hands-on experience in mobile-core signaling, roaming interconnect, telecom solutions engineering, or network operations
- Deep technical Diameter experience, including DRA/DEA configuration, realm routing, peer management, and S6a/S6d/SGd protocols
- Strong IP interconnect fundamentals, including DNS/ENUM, routing, security controls, and firewall/ACL coordination over IPX/GRX networks
- Advanced protocol analysis skills with the ability to read Wireshark traces to independently diagnose signaling failures
- Proven experience translating complex IR.21/RAEX data into operational configurations and executing structured IREG validation
- A disciplined approach to change management, documentation, configuration integrity, and live production risk
Desired Qualifications
- NB-IoT NTN, NIDD, MME registration troubleshooting, SS7/MAP, STP, or IoT roaming experience
- Hands-on experience with Signalling & IP configuration in Core network
- Automation experience using Python, APIs, infrastructure as code, or network testing frameworks
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