Infra Engineering Expert

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All selection processes will be conducted in Japanese.

Job Details

Infra Engineering Expert

Infrastructure Engineers build and operate the infrastructure that supports LY Corporation’s services. This is an environment which provides the opportunity to grow as an engineer by working on one of the largest infrastructure systems in Japan.

System

This team is responsible for automating the design, construction, and operation of the infrastructure for hundreds of thousands of physical servers used across our services. Their work includes OS provisioning in large-scale infrastructures, technical verification for selecting hardware such as servers and storage devices, and optimizing related costs. They also develop systems for server management, operation, and monitoring.

Network

Network Engineers are responsible for planning, designing, building, and operating the large-scale networks that support tens of thousands of servers used across our services. Their scope covers network equipment such as routers, switches, and load balancers, as well as connections like the Internet and dedicated lines. The types of networks include server farms in data centers, domestic and international DCI networks, high-security service-specific networks, and transit lines/IX/PNI. They also work on testing new products and technologies, as well as developing automation and tools to improve operational efficiency and accuracy.

Cloud Platform

Cloud Platform Engineers are responsible for the development of infrastructure provisioning and operational automation using software technologies and methodologies for cloud platforms that seamlessly connect infrastructure and applications. Specifically, they develop and operate private cloud platforms that leverage OSS, such as OpenStack and Kubernetes, as well as network control and data planes.

Application and Job Summary

Requirements

We welcome those who can join us in 2028 (joining months are April and October). For visa purposes, applicants are required to have a degree in a relevant field. Since this is a new graduate position, only those without full-time working experience can apply for this role.

Work Location

We have introduced the “LY Corporation Working Style,” which combines office work and remote work.
By maintaining flexible work styles, we promote communication and collaboration across the organization and build a structure that enables us to stay agile and adapt quickly to change.

Tokyo and others (Nagoya, Osaka, Fukuoka, etc.)
- During the training period, you will be based at our Tokyo offices (Akasaka Office).
- Your assigned department and location will be determined based on your aptitude.
- The rules and frequency of working at the office is different for each organization and job role.
- Commuting allowance to and from the office is provided for up to 150,000 JPY/month, which includes commuting by bullet train or airplane. Each month's commuting allowance will be paid in the following month according to the actual number of days you have commuted to the office.

For more details, please refer to our Work Environment page.

Work Hours

Flextime system (no core hours)
Standard work hours: 7 hours 45 minutes

Holidays and Leave

Two days off per week (Saturdays and Sundays*1), national holidays, New Year's holiday (December 29 to January 4)
Paid leave, special paid leave (for condolence, maternity, sick childcare, nursing care, legally-designated communicable disease, etc.), Happy Friday*2, sabbatical leave
*1 May differ depending on department.
*2 When a public holiday falls on a Saturday, employees will be given the Friday before off.

Salary

Compensation will be determined based on experience and skills, with no upper limit.
The following is an example of the salary offered upon hiring
Standard monthly salary: From 487,000 JPY/month
(includes a base salary from 377,377 JPY/month + 35 hours fixed overtime allowance from 109,623 JPY/month)*1
Standard annual salary: From 7,305,000 JPY (includes standard monthly salary × 12 + 2 time bonus (standard monthly salary × 3 months))*2 *3
*1 If your overtime exceeds 35 hours a month, you will receive a separate allowance to cover the extra hours.
*2 Amount you will earn if you achieve standard results in performance reviews for the year.
*3 Bonuses are granted a maximum of two times a year. The amount is determined by factors including the company's and your department's performance.

Salary Revision

Twice a year

Allowances

LY Corporation Working Style Allowance: 11,000 JPY/month
Commuting allowance: Granted for actual expenses paid (maximum of 150,000 JPY/month)

Benefits

Optional Defined Contribution (DC) Pension Plan, Comprehensive Welfare Group Term Insurance, Group Long-term Disability, Employee Savings Program, Cumulative Stock Investment Program, subsidy for re-examination after regular basic/comprehensive health checkup, LY Corporation Working Style Allowance, in-house massage room, club activities, subsidy for employee social events, and more

Talent Development/Support Systems

Training for Employees, Language Courses, Management Training, LY Corporation Job Challenge, Sabbatical Leave, Doctoral Studies Support Program, and more

Selection Information

Selection Process

  • Step1

    Application

  • Step2

    Coding Test

  • Step3

    Interview(s)

  • Step4

    Offer

All selection processes will be conducted in Japanese.

Re-Challenge System

The Re-Challenge System lets applicants who do not pass the coding test retake it during a following round. We offer unlimited retakes until the end of the final round with the aim to lower the psychological barrier of the exam. Whether you've only recently started job hunting or are already determined to work at LY Corporation, we welcome anyone interested to take our coding tests.

*The Re-Challenge System also allows applicants to apply for different positions each round. (e.g., an applicant who takes the coding test for an Infra Engineering Expert during Round 1 can take the coding test for a Software Engineering Specialist in Round 2)
*The Re-Challenge System does not apply after applicants have passed the coding test.

Application Period
Round 1
Until 10:00 a.m. on Monday, November 9, 2026
Round 2
Monday, November 9, 2026 – Monday, December 7, 2026, at 10:00 a.m.
Round 3
Monday, December 7, 2026 – Tuesday, January 5, 2027, at 10:00 a.m.

*Please note that the selection process may close without prior notice if, for example, the planned number of hires is reached.

Apply

All selection processes will be conducted in Japanese.

Related Links

Official Recruitment
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