> Markdown version of [/jobs/ext/2176013-solutions-engineer-ss7-signalling-and-ip-routing](https://www.wearedevelopers.com/jobs/ext/2176013-solutions-engineer-ss7-signalling-and-ip-routing). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Solutions Engineer (SS7 Signalling and IP Routing) - **Company:** Skylo Technologies - **Location:** London, UK (Remote available) - **Experience:** Expert - **Salary:** £64,342.0 - **Contract:** Permanent contract - **Skills:** Private Networks, Application Programming Interfaces (APIs), Software Design Documents, Domain Name System (DNS), IP Addressing, IP Routing, Python (Programming Language), Routing, Internetwork Packet Exchange, Wireshark, Mobile Network Operator, Computer Network Operations, Firewalls (Computer Science), Infrastructure Automation Frameworks - **Published:** August 22, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5852577425 ## About the Role * 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., * 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. ## Description Skylo is seeking a highly technical, hands-on Signaling and Routing Specialist to turn each Mobile Network Operator's (MNO) IR.21/RAEX profile into production-ready Diameter connectivity and validated live traffic. You will own the operational technical path from interconnect design through DRA/DEA configuration, IP/DNS/ENUM readiness, IREG execution, troubleshooting, and operational handoff., * Routing Configuration: Design and configure Signaling, DRA/DEA routing, peers, connections, realms, Diameter identities, and relevant GT and point-code mappings. * Profile Translation: Translate IR.21/RAEX inputs into accurate, version-controlled operational configurations. * IP & DNS Coordination: Plan interconnect IP addressing and coordinate DNS/ENUM, APN, realm resolution, firewall/ACL, and IPX peering changes. * IREG Execution: Own end-to-end IREG-side testing for network registration, attach sequences, S6a/S6d authentication, SGd SMS, and NIDD where applicable. * Trace Analysis: Analyze signaling traces (Wireshark) and resolve failures spanning Skylo, the IPX provider, and the partner MNO. * Component-Level Isolation: Navigate and collaborate with Skylo IPX partners and MNO IPX teams to isolate routing and configuration issues at the component level. * Standardization: Establish clean change-control, peer-review, rollback, and documentation practices, creating LLD (Low-Level Design) documents for every interconnection. * Cross-Functional Partnering: Partner with internal Network Engineering, NOC, Security, Product, and external MNO technical teams through go-live and stabilization. ## Related Videos - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [How I saved 200K/yr in direct costs writing 0 code lines in K8s](https://www.wearedevelopers.com/videos/1055-how-i-saved-200k-yr-in-direct-costs-writing-0-code-lines-in-k8s) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Bitcoin SV: The Massively Scaled Blockchain to Meet Developer Needs](https://www.wearedevelopers.com/videos/20-bitcoin-sv-the-massively-scaled-blockchain-to-meet-developer-needs) - [IP Authentication: A Tale of Performance Pitfalls and Challenges in Prod](https://www.wearedevelopers.com/videos/1413-ip-authentication-a-tale-of-performance-pitfalls-and-challenges-in-prod) - [Demystifying application networking in the cloud](https://www.wearedevelopers.com/videos/675-demystifying-application-networking-in-the-cloud) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)