Jaebeom Lee
Integration Engineer at Ericsson
Based in Ota-ku, Japan
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Seniority
Staff
Department
Information Technology
Location
Ota-ku
Industry
Telecommunications
Company size
107K
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j•••••••@ericsson.com
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Background
About Jaebeom Lee
Telecom engineer with 5+ years of experience in IMS/VoLTE systems, currently working at Ericsson Japan. Skilled in integrating and operating core IMS nodes including EC/CSS (Emergency Call System), vSBG (Session Border Gateway), and MRS (Media Resource Server) with MRFP/BGF functions, across both OpenStack and RHOSP NFVI platforms. Experienced in CLI-based node operations using ncli and bsh shell, covering H.248 link configuration, service provisioning, and fault resolution in live commercial environments. Supported automation of repetitive tasks via Bash and Python. Led end-to-end support for EC/CSS infrastructure including SIP signaling flow, emergency call routing, MySQL-based state storage, HA/GeoRedundancy setup, and customer request handling. Also coordinated deployments and issue tracking using Redmine. Currently focused on evolving toward cloud-native IMS environments, building expertise in Docker, Kubernetes, Helm, and telco-grade container orchestration for IMS/VoLTE workloads-**Currently Learning: Docker: Containerization fundamentals and image lifecycle • Kubernetes: Pods, Deployments, Services, ConfigMaps • Helm: Chart packaging and lifecycle management • CI/CD: Git, Jenkins, ArgoCD (automation pipelines for telecom) • Cloud-Native Telco Concepts: CNF, NFVI, Service Mesh (Istio – beginner level) • Ericsson CNIS / ETSI NFV architecture – principles & deployment models
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