JOB DESCRIPTION

We are looking for a Senior 3GPP Wireless Core Design Engineer Architect who will be an integral part our global communication network engineering team. The SME in the comprehensive Wifi roaming domain, includes 3GPP mobile core network, TWAG, Passpoint/HS2.0, EAP-SIM, EAP-AKA, EAP-TTLS, and so on wireless network knowledge domain. Excellent problem-solving skills and thorough knowledge of the network.

Required :

• Must have strong knowledge and experience on Cellular core, TWAG(Trusted Wireless Access Gateway), Wifi roaming, Passpoint, EAP-SIM, EAP-AKA, 3GPP standard, TCP/IP, Diameter, QOS, and all layers of OSI model.
• Must have extensive knowledge of 802.11 wireless standards, technologies, methodologies, and security practices
• Must to have deep knowledge and experience in using 3GPP interfaces, such as S5, S6a/S6d, Gr, S9, Gx, Rx, SGi,
• Must have extensive experience and knowledge of Authentication, Authorization, and Accounting (AAA) protocols such as RADIUS and IEEE 802.1X standards.
• Must to have strong Unix/Linux system administrator or engineering experience
• Must to have experience with WLAN and WAP.
• Nice to have experience with virtualized implementation (SDN/NFV) of Network/Telco nodes under NFV, OpenStack, etc.
• Nice to have knowledge of Evolved Packet Core/System call flows and interworking.
• Nice to have working knowledge on routing protocols, such as BGP, OSPF, QoS, MPLS and MPLS VPN, etc.
• Must to have exceptional documentation skills that can clearly articulate technical designs, issues and constraints, procedures, and network assessments
• Must to have strong communication skills and a positive attitude
• Must to have strong analytical and problem determination/resolution skills.
• Must to have excellent problem-solving skills and thorough knowledge of network
• Must to have self-motivated, Self-Reliant, Self-Starting, Go-Getter, Attitude of ownership, and A strong desire to learn
• Must to have works well in an engineering environment that requires communication and collaboration with fellow team members, and cross function teams

Responsibilities

• Align with Principal architect/engineer vision and roadmap, independently create architecture, design, evaluate and test of Mobile Network Wifi Roaming, Wireless Access Gateway.
• Support 3GPP HnB nodes/interfaces life cycles management.
• Lead wireless network design efforts on technical solutions for complex projects, integrating multiple technologies and with broad, strategic impact across multiple business and technology areas.
• Provides analysis of network performance, network reliability and identify opportunity for improvement. Drive out inefficiencies, proposes and designs ground network system to drive cost savings in airline customer facing network systems
• Create network unit and integration test plan
• Test wireless network devices and solutions, include new architecture proof of concept test, change procedure test, upgrade regression test
• Create architecture research plan and report
• Create design document
• Create configuration standard document
• Create test plan & report document
• Participation in business continuation activities
• Configuration and troubleshoot training to operation teams
• Leverage experience to provide mentoring to other members of technical team where necessary.
• Provide tier-4 support to operation team