Senior Mobile Core Architect

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OXIO

WebsiteLinkedInAll Job Openings

51 - 200 employees

📡 Telecommunications

☁️ SaaS

💳 Fintech

Telecommunications • SaaS • Fintech

OXIO is a telecom company offering a cloud-native, programmable Telecom-as-a-Service platform that empowers businesses to launch and manage their own mobile networks. The company's platform, BrandVNO, enables the creation of custom mobile connectivity services without telecom expertise, allowing organizations to integrate these services seamlessly into their existing operations. OXIO provides tools for business intelligence, subscriber management, and personalized customer experiences, targeting retail, fintech, and various enterprise sectors. The company's API-first approach facilitates rapid innovation, cost reduction, and enhanced customer engagement across multiple markets.

📋 Description

• Configuration of STPs, DRAs, HLR/HSS, SMSC, SGSN, GGSN/PGW, SBC, etc. • Along with the team, you will be responsible for being able to manage all equipment on our network. • Using dashboards (and building new ones) to clearly and quickly discover issues and patterns • Accountable and responsible to follow the communications procedures in place when handling an incident. • Communication is both internal within our company and external to our third-party providers. • Drive the implementation of telecom interconnection in relationship with our providers • Maintenance, troubleshooting, security audits, and emergency response • Wireshark tracing of critical infrastructure to debug issues • Occasional on-call requirements

🎯 Requirements

• At least 10 years’ experience in the core network domain with a mobile networks • Holding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus) • 10+ years core telecommunications network experience • 10+ years of experience with SS7, Sigtran, Diameter, Packet Switched (GGSN/PGw, GTP, GRX, IPX, etc.) • Circuit switched communications protocols such as SS7 (including SCCP, TCAP, MAP and CAMEL phases 1 to 4), SCTP (SIGTRAN), Diameter, including ability to design and configure voice and messaging flows • Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi)Knowledge (general) in Voice Mail, IVR and PBX systems / softphones (secondary) • Hands on with sniffers, Wireshark and testing tools in advanced mode • Hands on with Linux/Unix based systems (you can find your way around a linux shell) • Understanding of 3GPP, ITU-T and ANSI standards • Understanding of roaming agreements and IR.21, including IREG testing • Online Charging System (OCS) and CAMEL in billing and call control • Strong writing and documentation skills are needed to develop reports • Adaptability and responding to change • Be able to work under pressure • You are fluent in English (written and spoken) • Ready to work on morning/afternoon shifts • Good interaction with external customers and internal teams