20 hours ago
Minato, JapanSenior
Responsibilities
- Lead the architecture, design, integration, and deployment of Cisco 4G/5G SA and NSA converged packet core and CUPS solutions.
- Own high-level and low-level designs, end-to-end signaling call flows, session management, policy control, charging, subscriber data management, and network slicing.
- Architect high-throughput, low-latency UPF and SBA control planes across Kubernetes, OpenStack, and bare-metal Telco Cloud environments.
- Direct lab staging, proof-of-concept benchmarking, migration planning, operational runbooks, and real-time decision-making during carrier cutovers.
- Advise telecommunications carrier engineering and executive stakeholders on technology roadmaps and architectural evolution.
- Mentor consulting engineers, maintain delivery quality, and collaborate with Cisco development and technical assistance teams to resolve software and protocol issues.
Requirements
- At least 8 years of hands-on experience in service-provider mobile packet core architecture, engineering design, or delivery involving 4G LTE EPC or 5G NSA/SA Core.
- Deep expertise in 3GPP mobile core protocols and interfaces, including 5G SBA, HTTP/2, REST APIs, JSON, PFCP, GTP-C, GTP-U, Diameter, RADIUS, and BGP/MPLS routing.
- Experience architecting or deploying UPF, SMF, AMF, NRF, PCF, MME, SGW, PGW, and ePDG/N3IWF network functions.
- Hands-on experience with Kubernetes, Docker, OpenStack, KVM, SR-IOV, DPDK, and CNDP in Telco Cloud and virtualization environments.
- Experience leading mission-critical network cutovers, major software migrations, and performance benchmarking for tier-one telecommunications carriers.
- Native or business-level Japanese fluency and professional working English proficiency are required.
- Preferred qualifications include Cisco Mobility platform experience, knowledge of network slicing, Private 5G, MEC, and IMS/VoNR, CCIE or CKA certification, and scripting or automation experience with Python, Ansible, Terraform, or Linux shell tools.
Tech Stack
Categories
Solutions Engineering
About Cisco
Cisco designs and sells networking, security, and collaboration platforms for enterprises, service providers, and governments, spanning routers and switches, Wi‑Fi, firewalls, zero‑trust, observability, and cloud-managed IT (Meraki) plus Webex. Its business model mixes hardware, software subscriptions, and support/consulting services. Founded in 1984 and headquartered in San Jose, California, Cisco is a public company traded on Nasdaq and serves customers across data centers, campuses, and service provider networks.