In-house IT infrastructure manager
Annual Salary: 5,493,636 yen ～7,687,392yen
職種
ITエンジニア【システム開発・SE・インフラ】
Type: IT infrastructure manager
場所:Tokyo
■Resume and work history written in Japanese are required (There is a possibility that your application will not be processed if you only have English documents).
■We are a recruitment agency conducting this recruitment on behalf of the companies seeking employees.
■Japanese N1 required.
■Required:
Requirements
Mandatory
3+ years of experience in network design, construction, and operation
Knowledge and experience with Windows/Linux servers
Experience as a project leader (even for small-scale projects)
Knowledge of L2/L3, DHCP, and DNS required for network operation
Employment Type
Full-time (Permanent)
Job Description
■ Background for Recruitment
Our Corporate IT Department supports the IT infrastructure of our entire group, including the design, construction, and operation of network and server environments. As our business continues to grow, we are expanding our workforce and opening new offices, making the development of robust IT infrastructure more essential than ever. To respond to these changes flexibly and promptly while maintaining a stable IT foundation, we are hiring additional infrastructure engineers.
■ Mission of the Organization
We aim to provide a reliable IT infrastructure that allows users to perform their work smoothly at all times, thereby supporting the company’s growth. This involves maintaining stable system operations and building infrastructure that is secure and convenient without users being conscious of it. We actively incorporate the latest technologies to create a secure yet user-friendly environment, forming a solid IT foundation that supports Rakus's long-term development.
■ Job Responsibilities
As a member of the in-house information systems team, you will primarily handle network-related infrastructure tasks. You will be broadly involved in designing, constructing, and operating internal IT infrastructure across the entire corporate group, including subsidiaries. With the frequent expansion and relocation of offices due to active hiring, you’ll have a great deal of responsibility, including opportunities to build environments from the ground up. We also encourage proactive suggestions for new initiatives and infrastructure strategies.
Main Responsibilities
Design, construction, and operation of IT infrastructure (network/server) for an organization of approximately 3,000 people
IT infrastructure setup for new office openings or relocations
└ Includes video conferencing systems, LAN/WAN, VPN design and implementation
User support and troubleshooting (as part of your duties)
Technologies and Tools Used
Network Equipment: Cisco, Meraki, FortiGate, YAMAHA, DELL, APRESIA
Cloud Services: AWS, Azure
Server OS: Windows (main), Linux
Services: AD, DNS, DHCP, Syslog, Azure AD, etc.
Monitoring: Zabbix
■ Department Assignment
Corporate IT Division
Information Security Department
└ Security Systems Section
└ Security Management Section
Information Systems Department
└ Cloud Services Section (Osaka)
└ IT Infrastructure Section (Osaka)
└ IT Infrastructure Section (Tokyo) ★You will be assigned here
└ IT Device Management Section
Business Systems Department
└ Business Systems Promotion Section 1
└ Business Systems Promotion Section 2
└ AI Promotion Section
└ Data Infrastructure Section
■ Position Highlights
High Impact and Collaboration:
Work in a culture that values proactive improvement, where your proposals can directly influence the organization.
Strong Support for IT Investments:
With leadership that understands technology (many executives have engineering backgrounds), you’ll have the opportunity to lead initiatives from planning to execution, using the latest tech.
Career Growth in a Growing Company:
Supported by a solid financial foundation and strategic investments, this role offers opportunities for career development and recognition through results-driven reforms.
Salary
Annual Salary: ¥5,493,636 – ¥7,687,392
Example: For ¥5.49M/year
Monthly: ¥344,563 (includes base salary ¥268,000 + overtime allowance ¥46,563 + other allowances ¥30,000)
20 hours/month of overtime is compensated regardless of actual overtime
Allowances
Family Allowance (¥30,000/month for 1 child, ¥50,000 for 2, ¥60,000 for 3+)
Overtime/holiday/night shift/travel/relocation allowances
Commuting allowance
Bonuses
Twice a year (June and December)
Salary Review: Annually in May
Working Hours
9:00 AM – 6:00 PM
Trial Period
6 months (No change in conditions)
Holidays & Leave
Full 2-day weekends (Sat & Sun), public holidays
Year-end/New Year holidays, summer holidays
Paid leave (90%+ usage rate, FY March 2024)
Sick leave (5 days/year, separate from paid leave)
Time-off in hourly units (up to 40 hours/year)
Maternity, paternity, bereavement, child care leave
Backup leave (carryover for expired paid leave, up to 20 days)
Social Insurance
Complete coverage: Health (Kanto IT Software Health Insurance), Employment, Pension, and Workers’ Compensation
Benefits
Commuting allowance (up to ¥100,000/month)
Family allowance (as above; not applicable for Assistant Managers or higher)
Casual attire permitted
Flexible work hours (e.g., 8–17, 8:30–17:30, 10–19)
“Raku Smile” system for flexible work style during childcare
Shortened work hours for childcare or caregiving
Babysitting subsidy
Internal clubs (e.g., baseball, music, model kits) and events
In-house café (free coffee/tea/snacks, water dispenser)
Book lending system
Regular training by job level (managers, leaders, new grads)
Requirements
Mandatory
3+ years of experience in network design, construction, and operation
Knowledge and experience with Windows/Linux servers
Experience as a project leader (even for small-scale projects)
Knowledge of L2/L3, DHCP, and DNS required for network operation
Preferred
Experience with AWS or Azure (network/server/service)
Experience with IT infrastructure for office relocations
3+ years of experience managing Windows PCs
Candidates with experience in SES, SI, NI companies or varied on-site environments are welcome.
Education
Bachelor’s, Master’s, Technical School, or High School graduate
Work Location
Agri Square Shinjuku, 5-27-11 Sendagaya, Shibuya-ku, Tokyo
May be reassigned within company premises
Smoking Policy
Non-smoking indoors
Recruitment Process
Apply via the job site
Screening results will be sent
Successful applicants will be invited to 2–3 interviews
SPI aptitude test may be required (details provided by HR)
