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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Technical Program Manager - **Company:** Skylo Technologies - **Location:** London, UK (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, RAID, Mobile Virtual Network Operator, Routing, Internetwork Packet Exchange, Systems Integration - **Published:** September 5, 2026 - **Apply:** https://startup.jobs/technical-program-manager-core-network-delivery-mno-onboarding-skylo-technologies-8290128 ## About the Role * NTN, NB-IoT, or cellular IoT connectivity experience. * SMS-over-NAS delivery paths (SGd Diameter and MAP-via-IPX), and CIoT optimizations (NIDD, control-plane CIoT). * Experience with wholesale roaming, MVNO/MVNE, or roaming-hub environments. * Familiarity with BCE and next-generation settlement, and with ERP/finance-system integration for billing. * Exposure to clearing-house and IPX supplier commercial/technical management. ## Description * wn the MNO technical onboarding program end-to-end from the core/signalling/billing lens - integration milestones, dependencies, Definitions of Done, and cutover plans across the partner lifecycle. * Drive signalling delivery programs: Diameter interfaces (S6a, SGd), MAP-over-IPX via IWF, DRA configuration and routing policy, SMS-over-NAS enablement, and roaming signalling readiness per partner. * Coordinate billing & settlement programs: TAP3 / RAP / NRTRDE exchange, BCE readiness, mediation and rating, CDR integrity and reconciliation, and integration with settlement and finance systems. * Program-manage the multi-supplier roaming stack - supplier onboarding, contractual/technical cutover, parallel-run and rollback planning, and de-risking the transition away from single-supplier dependency. * Run program governance: maintain roadmaps, RAID logs, release trains, and cross-functional launch-readiness reviews; make dependencies and risks visible before they become escalations. * Own the metrics that matter: onboarding cycle time, signalling success/attach rates, routing correctness, CDR and settlement accuracy, and billing-run reliability - and report them to engineering and commercial leadership. * Be the translation layer between deep network engineering and commercial/partner stakeholders, so that partner commitments and network reality stay aligned., You know how wholesale roaming works end to end, and you have the program management discipline to keep a complex multi-partner portfolio running smoothly without losing track of the details. * 8+ years in mobile core / signalling engineering or technical program leadership, with deep, hands-on time in the signalling plane * Understanding of Signalling in 3GPP core, across EPC and 5GC: + NAS procedures (attach, TAU, service request) and the interfaces that carry them - S6a, S6c, S13, SGd, T6a - with fluency in Diameter base protocol, AVP design, realm/application routing, and error/overload handling. + DRA/DEA architecture: understanding of routing policy & topology + A clear grasp of the SS7/MAP * Diameter boundary and IWF interworking (e.g. legacy SMS via MAP over IPX vs. SGd Diameter). * NB-IoT / CIoT and NTN signalling specifics: control-plane CIoT EPS optimisation, NIDD, and the way NTN propagation delay and timer handling (Rel-17 NTN) change attach/retransmission behaviour. * Hands-on roaming operations: IREG/TADIG, IR.21/RAEX, IPX interconnect, and per-partner signalling readiness. * Working understanding of billing & settlement as it depends on signalling and CDR generation: TAP3 (TD.57), RAP (TD.32), NRTRDE, and the CDR lifecycle from record generation to settlement. * Demonstrated track record shipping cross-functional network programs on time across engineering and external partners. * Credible in a signalling design review and in a partner integration call alike - equally at home with core engineers and external carrier counterparts.Every role at Skylo uses AI tools daily to amplify output. We expect active habits using AI tools and a track record of picking up new ones quickly., * A single, trusted onboarding program that partner-facing and engineering teams both plan against - with cycle time trending down as volume grows. * Signalling and billing readiness treated as a gated part of every partner launch, not a post-launch surprise. * The multi-supplier roaming transition de-risked with a clear cutover and rollback plan, and no single-supplier lock-in surprises. * Program-level visibility into signalling and settlement health that leadership actually uses to make calls. ## 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) - [AI Agents & Agentic AI](https://www.wearedevelopers.com/videos/2017-ai-agents-agentic-ai) - [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) - [Code meets connectivity - Developers as the powerhouse of Network API innovation](https://www.wearedevelopers.com/videos/1686-code-meets-connectivity-developers-as-the-powerhouse-of-network-api-innovation) - [Physical AI: The Era of Intelligent Machines](https://www.wearedevelopers.com/videos/100141-physical-ai-the-era-of-intelligent-machines) - [A Technical Introduction to Bitcoin's 2nd Layer- The Lightning Network](https://www.wearedevelopers.com/videos/15-a-technical-introduction-to-bitcoin-s-2nd-layer-the-lightning-network) ## Related Articles - [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) - [The CAMARA Project: How Telcos Collaborating Improves Developer Experience](https://www.wearedevelopers.com/magazine/671-the-camara-project-how-telcos-collaborating-improves-developer-experience) - [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) - [Basic And Advanced Networking in Dart and Flutter](https://www.wearedevelopers.com/magazine/112-basic-and-advanced-networking-in-dart-and-flutter) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)