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Rakuten

Senior Network Engineer - Core Technologies Section, Corporate IT Infrastructure Department (CITID)

LocationTokyo, Japan
Typefull-time
SenioritySenior
Experience6+ yrs
Company size10,000+ people
PostedAug 10, 2026 · 2mo ago
Verified live5h ago
At a glanceSummarised by Seekless from the posting.
Must have8
Expert level skill with minimum 6 years of experience in at least five of the following products/technologies
Negotiation and troubleshooting experience with vendors/telecommunication carriers
Strong analytical, communication, problem solving and documentation skills
Strong interest with new network technologies
Bachelor's Degree in Computer Science/Computer Engineering
Professional level of certification from vendors (Cisco, ZScaler, Juniper, PaloAlto, Fortinet, HPE)
Strong stakeholder management skills and communication skills
English : Business level (TOEIC 800 or higher) or Native
Nice to have7
More than 10 years of network experience
Experience with enterprise level network with over 100 locations and 5 Data Centers
Zero Trust Network deployment experience with ZScaler
Depth knowledge and experience in network securities (IDS, IPS, URL Filtering, etc.)
Knowledge in Active Directory, Windows/MacOS/Linux
Project Management experience
Japanese : At least conversational level is preferred
Skills
OSPF
BGP
VRF
Cisco Catalyst
Nexus
HPE
ZScaler ZIA
ZScaler ZPA
ZScaler ZCC
ZScaler ZDX
Mist
Cisco wireless
Palo Alto
Fortigate
IDS
IPS
URL Filtering
AWS
Azure
GCP
EdgeConnect
Fortinet SDWAN
IPsec
DMVPN
Cisco ISE
802.1x
RADIUS
TACACS+
AIOps
SNMP
Netflow
ADX
Active Directory
Windows
MacOS
Linux
Job Description:
Business Overview
The Technology Management Division (TMD) provides Corporate IT, and Cyber
Security & Privacy Governance to Rakuten Group companies and essential business management for technology organizations, thereby enabling innovation and strengthening the technology foundation. Within TMD, the Corporate IT Supervisory Department (CITD) drives Rakuten Group’s global corporate IT services and infrastructure. Our mission is to empower Rakuten through innovative and secure IT solutions that enhance efficiency and foster productivity.
Department Overview
The Corporate IT Infrastructure Department (CITID) provides the stable and reliable technological foundation that supports Rakuten’s global business operations. We deliver simple, secure, and robust infrastructure services with operational and engineering excellence, managing core infrastructure, enterprise collaboration platforms, development support tools and project management.
Position:
Why We Hire
As Rakuten Group continues its rapid global expansion, we are modernizing our network architecture to embrace a “Cloud-First” and “Zero Trust” network model. We are looking for a Senior Network Engineer to support this transformation and ensure our global corporate network infrastructure remains agile, secure and highly available.
Position Details
You’ll join a global team and will have a lot of chances to work for global projects as well as domestic projects.
Your responsibilities will include:
・Design, verification, construction, operation and user support for overall network infrastructure, including Zero Trust network, wired/wireless LAN, Data Center and cloud network, WAN, remote access, authentication, firewall and load balancer.
・Propose and engage in selection process for new technology/product/design.
・Work for various projects with domestic or global infrastructure team.
・Mentor junior engineers, share troubleshooting/design best practices, and lead technical initiatives from conception through completion.
・Develop and maintain network architecture documentation, standards, best practices, configurations, procedures and diagrams.
・Act as the SME for complex network incidents : perform root cause analysis, implement fixes and proactively address performance bottlenecks and capacity constraints.
・Drive the transition from manual configuration to Infrastructure-as-Code (IaC)
Mandatory Qualifications:
・Expert level skill with minimum 6 years of experience in at least five of the following products/technologies:
1.Core network routing (OSPF, BGP, VRF)
2.
Data Center and branch office switching (Cisco Catalyst, Nexus, HPE)
3.
Zero Trust Network (ZScaler : ZIA, ZPA, ZCC, ZDX)
4.
Wireless LAN (Mist/Cisco)
5.
NGFW Firewalls (Palo Alto, Fortigate, IDS/IPS, URL Filtering)
6.
Public cloud networking (AWS, Azure, GCP)
7.
SDWAN (EdgeConnect, Fortinet, etc.)
8.
Site-to-Site VPN (IPsec, DMVPN)
9.
Network Authentication (Cisco ISE, 802.1x, RADIUS, TACACS+)
10.
AIOps
11.
Network monitoring and logging (SNMP, Netflow, ADX)
12.
Network automation and orchestration
・Negotiation and troubleshooting experience with vendors/telecommunication carriers
・Strong analytical, communication, problem solving and documentation skills
・Strong interest with new network technologies
・ Bachelor’s Degree in Computer Science/Computer Engineering
・Professional level of certification from vendors (Cisco, ZScaler, Juniper, PaloAlto, Fortinet, HPE)
・Strong stakeholder management skills and communication skills
Desired Qualifications:
・More than 10 years of network experience
・Experience with enterprise level network with over 100 locations and 5 Data Centers
・Zero Trust Network deployment experience with ZScaler
・Depth knowledge and experience in network securities (IDS, IPS, URL Filtering, etc.)
・Knowledge in Active Directory, Windows/MacOS/Linux
・Project Management experience
Other Information:
Additional information on English Qualification
English : Business level (TOEIC 800 or higher) or Native
Japanese : At least conversational level is preferred
#engineer
#infrastructureengineer
#technologymanagementdiv
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