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OXIO · 6 days ago

Senior Packet Core Architect

United States

Full-time

Remote

Senior Level

5+ years exp

OXIO is the world’s first telecom-as-a-service (TaaS) platform, democratizing telecom for brands and enterprises. The Senior Packet Core Architect will act as a Subject Matter Expert in mobile Packet Switched network elements, support vendor management, and assist in the design and implementation of customer-specific solutions.

Cloud Data ServicesInfrastructureTelecommunicationsWireless

Diversity & Inclusion

Responsibilities

To act as a Subject Matter Expert (SME) in all 3G/4G/5G mobile Packet Switched (PS) network elements like PGW, GGSN, MME, ePDG, SGSN and other Packet Core elements

Making recommendations for improvements in all aspects of the core functions and elements

Configuration and software version management of the assigned mobile core network elements

Supporting management of the relevant mobile core network element vendors

Supporting Roaming & Carrier Relations to implement new roaming and wholesale implementation, including IREG testing

Providing support to Pre-Sales (Solution Architects) through peer-review of proposed solutions to customer

Working with Solution Architects and the Head of Telecom to work into High Level Design (HLD) documentation

Convert HLD into LLD and specific core element changes to implement customer specific solution

Support the Network Operations Centre (NOC) with live wholesale customer support, including both proactive and reactive identification / troubleshooting and resolution of issues of packet core issues

Developing skills and expertise across the infrastructure components and new technologies

Qualification

Packet Switched networksMobile core network elementsSystems integrationIP networking3GPP standardsTroubleshootingTechnical supportCapacity managementVoice SIP/RTPNetwork security

Required

Bachelors or Master's degree in Computer Science or Engineering

Minimum of 5-8 years working in the telecommunications industry designing, integrating and managing Packet Switched network propositions for e.g. a NEP or carrier / MNO / MVNO

Minimum of three years of systems integration, management and/or technical support of mobile core network components

Demonstrable experience of managing & configuring Packet Switched network elements including GGSN, P-GW, SGSN, S-GW, PCRF & MME

Circuit Switched (CS) network elements, interfaces and messaging for both 3G/WCDMA and 4G/LTE networks, including IMS CSFB and PCRF

Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi)

IP networking, including IPv4 and IPv6, VPN IPSec and Point-to-Point (e.g. to CCNA standard)

In-depth knowledge of data core network architecture (including MNO and MVNO / MVNE infrastructure architecture) as well as network topology, including ability to describe the key elements of a mobile network and understand how the components function and interact as well as how mobile data sessions work

Experience of capacity management and dimensioning of all Packet Core network nodes

Be able to derive call flows and interactions of each core element as required by each customer solution

In-depth understanding of 3GPP, ITU-T and ANSI standards

Understanding of roaming agreements and IR.21, including IREG testing

RADIUS and Diameter for both signaling and charging scenarios

Trouble shooting and fault detection. Proactive and preventative maintenance

IP and SS7 network security

Familiarity with BSS platforms and provisioning systems

Successful track record of designing compelling technical solutions based on commercial needs of the customers