CareerPlan

Senior Network Engineer, Director – Critical Infrastructure & Patch Deployment

Tokyo, JapanFull-time2026-11-06 → 2026-11-10

Core

Deploying, supporting, and patching critical network infrastructure across internal enterprise and external customer-facing platforms in highly regulated, uptime-sensitive environments.

Role type

Senior IC network engineer (infrastructure & security)

Builds

Enterprise-scale network infrastructure, security patches, and automation solutions for business-critical services.

Domain

Financial services / Enterprise Networking

Required skills

Routing and switching, Data center networking, Network security, Production change management, Cloud observability, Leaf-Spine architectures, Network automation (Python, Ansible, Terraform), BGP/OSPF protocols

Preferred skills

CCNP/CCIE certifications, Network automation frameworks, Large-scale global data center operations, Agile/DevOps methodologies

Technologies

Cisco, Arista, CloudWatch, VPC, Network Watcher, Ansible, Python, Terraform, Github, Jira

Responsibilities

Implement and support enterprise-scale network infrastructure across data centers, cloud, and campus environments; Provide Tier-3 support and technical leadership during major incidents; Lead planning, testing, risk assessment, and deployment of critical security and infrastructure patches; Coordinate maintenance windows, rollback plans, and post-implementation reviews; Develop automation solutions to improve operational efficiency; Monitor network performance and proactively identify risks.

Seniority

Senior, hands-on IC