Senior AAA Design Engineer Architect

Job Title Senior AAA Design Engineer ArchitectLocation - Irvine, CA (Onsite)

JOB SUMMARYWe are looking for a Senior AAA Design Engineer Architect who will be an integral part our global communication network engineering team. The SME in the comprehensive Mobile Network Wi-Fi roaming domain, includes AAA, Diameter, Passpoint/HS2.0, EAP-SIM, EAP-AKA, EAP-TTLS, and so on. Excellent problem-solving skills and thorough knowledge of the network. MAJOR RESPONSIBILITIES % OF TIME• Align with Principal architect/engineer vision and roadmap, independently create architecture, design, evaluate and test of Mobile Network Wi-Fi Roaming, AAA, Billing, and revenue assurance. • Lead wireless network Wi-Fi roaming 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

KNOWLEDGE/SKILL REQUIREMENTS• Must to have strong knowledge and experience on Mobile Network Wifi roaming, Passpoint, EAP-SIM, EAP-AKA, 3GPP standard, TCP/IP, QOS, and all layers of OSI model.• Must have extensive experience and knowledge of Authentication, Authorization, and Accounting (AAA) protocols, both RADIUS and Diameter• Must to have strong knowledge or experience on PCRF, PCEF, Quota manager, Mediation, Billing platform, etc.• Must to have deep knowledge and experience in using 3GPP interfaces, such as S5, S6a/S6d, Gr, S9, Gx, Rx, SGi, etc. • Must have extensive knowledge of 802.11 wireless standards, technologies, methodologies, and security practices.• Must to have strong Unix/Linux system administrator or engineering experience • Must to have experience with Tomia or Digital Route, Salesforce, B/OSS systems• Nice to have knowledge and working experience with access control, DPI, policy control, Netflow, IPFIX, IPDR, content filter, traffic shaping and policy enforcement solutions.• Nice to have experience with WLAN and WAP.• Nice to have experience with Utimaco or similar lawful interception platform experience. • 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 teamsEDUCATION/EXPERIENCE REQUIREMENTS• Education Requirements – Bachelor’s degree and above in technical field required. • Working Experience – 10+ years mobile network and telecom business AAA, and support system (BSS) OTHER REQUIREMENTS• Working Conditions/Physical Elements Must have flexibility of working extended hours, weekends, holidays to respond to customer needs and requirements. Normal office and lab environment. No heavy lifting or extreme physical labor is required. • Travel requirements – 25% travel will be required depending on the phase of each project.