Last updated: 2025-04-29

10 It Systems Administration jobs in Tokyo.

Hiring now: Field Tech @ Actionet, Digitalization Proj Suppo @ Continenta, Infrastructure Engr @ Rakuten, Cloud Hardware Engr @ Rakuten Mo, サーバエンジニア @ 楽天生命, It System Admin @ Mujin, Technical Leader Networki @ Woven By T.Explore more at jobswithgpt.com.

🔥 Skills

automation (4) infrastructure development (3) system failure response (3) Active Secret Clearance (2) maintenance (2) management (2) operation (2) performance tuning (2) capacity planning (2) scripting (2)

📍 Locations

Tokyo (7) Yokota (2) Yokohama (1)
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Actionet, Inc.

Field Technician Yokota
Skills & Focus: Field Technician, Active Secret Clearance, technical support, telecom installation, maintenance, troubleshooting, diagnose problems, system administration, DoD Secret clearance, IT solutions
About the Company: ActioNet is a CMMI-DEV Level 4, CMMI-SVC Level 4, ISO 20000, ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong qualifications a…
Experience: 12 months for Entry Level Role, 2-6 years for Mid Level Position, 10+ years for Senior Level Position
System Administrator (Entry to Senior Level) Yokota
Skills & Focus: System Administrator, Active Secret Clearance, Defense Program, Software Installs, System Upgrades, Data Integrity, System Backups, Recovery, User Support, Cyber Security
About the Company: ActioNet is a CMMI-DEV Level 4, CMMI-SVC Level 4, ISO 20000, ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong qualifications a…
Experience: 12 months for Entry Level, 2-6 years for Mid Level, 10+ years for Senior Level

Continental

Digitalization Project Support Yokohama
Skills & Focus: digitalization, industry 4.0, OPC, NodeRED, SAP Pco, production management, smart factory, cyber security, Windows server management, Linux server management
Experience: Enough experiences in Windows and Linux server management

Rakuten Group

Infrastructure Engineer Tokyo
Skills & Focus: infrastructure development, management, operation, performance tuning, capacity planning, automation, system failure response, collaboration, new technologies evaluation, script development
About the Company: Rakuten Group is based in Japan and serves approximately 100 million customers, with a global reach of 1 billion. We provide over 70 services across various fi…
Experience: 5+ years in Windows Server design, implementation, and operation; 5+ years hands-on experience with Active Directory; 3+ years in project management or team leadership.
Infrastructure Engineer Tokyo
Skills & Focus: infrastructure development, Linux server, project management, web system development, scripting, automation, system failure response, stakeholder collaboration, authentication systems, container platforms
About the Company: Rakuten Group is based in Japan and serves approximately 100 million customers, with a global reach of 1 billion. We provide over 70 services across various fi…
Experience: 5 years in Linux server design and operation, 3 years in project management or team leadership

Rakuten Mobile

Cloud Hardware Engineer Tokyo
Skills & Focus: cloud infrastructure, server hardware, Linux OS, device driver, shell scripting, Python, multi-national environment, log analysis, trouble shooting, cloud platform
About the Company: Cloud Platform Division has the mission of provisioning Rakuten Mobile's virtualized Cloud infrastructure.
Experience: 5+ years of experience in server and component design
Type: Full-time

楽天生命

サーバエンジニア Tokyo
Skills & Focus: サーバ, 設計, 構築, 保守, Windows Server, Linux Server, ミドルウェア, プロジェクトマネジメント, 仮想化環境, コミュニケーション力
About the Company: 楽天グループは67以上の多様なサービスを提供しており、保険グループは生命保険、損害保険、少額短期保険をその中で提供している。現在成長中の事業で、サーバの設計・構築・保守を行う。
Experience: Windows Serverの要件定義/設計/構築の経験が2年以上、ミドルウェアの設計/構築の経験が3年以上、Linux Serverの設計/構築経験が1年以上、社内SEの経験が2年以上
Type: Full-time

Mujin

IT System Administrator Tokyo
Skills & Focus: IT System Administrator, DevOps, cloud-based services, infrastructure, scaling, securing, designing, deploying, maintenance, reliability
About the Company: Mujin develops 'MujinController,' a platform that leverages a real-time digital twin and advanced robotics to seamlessly connect industrial equipment for fully…

Rakuten Group

Infrastructure Engineer Tokyo
Skills & Focus: infrastructure development, management, operation, performance tuning, capacity planning, automation, system failure response, stakeholder collaboration, SD-WAN, scripting
About the Company: Rakuten Group is based in Japan and serves approximately 100 million customers, with a global reach of 1 billion. We provide over 70 services across various fi…
Experience: 5+ years of experience in L3 switch and firewall environment construction, management, and troubleshooting; 3+ years of practical experience in project management or team leadership.

Woven By Toyota

Technical Leader - Networking Tokyo
Skills & Focus: firewall, network expertise, engineering infrastructure, enterprise networks, cloud networks, datacenter networks, automation, speed, reliability, scalability
About the Company: Woven by Toyota, a part of the Toyota Group, is challenging the current state of mobility through human-centric innovation and empowering mobility transformati…
Experience: Deep firewall and network expertise with a background in designing, building, and operating complex global networks in a multi-vendor environment.