Software Engineering Specialist

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All selection processes will be conducted in Japanese.

Job Details

Software Engineering Specialist

Software Engineers participate in the design, development, and operation of LY Corporation’s services and the infrastructure systems that support them such as those for data management and ad serving. Additionally, they work to ensure the security of these services. This is an environment which will expose you to a wide range of technology stacks and provide many opportunities to grow as an engineer.

Server-side

Server-side Engineers are responsible for the development of web applications and back-end systems in addition to commonly used shared platform features, such as data management and operational environment infrastructure, that they depend on. Their work includes the development and design of features which are provided directly to users (ad delivery, authentication, video delivery etc.) as well as underlying platform components and distributed systems designed to securely handle large amounts of data with high throughput.

Front-end

Front-end Engineers are responsible for developing the front end of our services. This includes web applications on browsers and iOS/Android app WebViews, as well as building SDKs and frameworks and optimizing performance.

Client (iOS / Android)

Client Engineers are responsible for developing client applications for the iOS and Android platforms to support a variety of LY Corporation services. In collaboration with planning, design, and other organizations, the team performs tasks such as functional development, performance tuning, build improvement, and UX (User Experience) improvement.

Data Engineering

Data Engineers are responsible for designing, developing, and operating various data-related products to maximize the value of our services’ data. They leverage the latest big data technologies to achieve scalable and efficient data processing while continuously pursuing a modern data stack.

Machine Learning

This team is involved in development focused on machine learning. They contribute to the introduction and application of new technologies and service implementation as well as maintenance operations and continuous improvement of LY Corporation’s services. Machine Learning Engineers are responsible for providing advanced data analysis and machine learning solutions for each service, including search systems such as web search and product search, content recommendation and filtering, and user targeting. Additionally, they are involved in data utilization across services and developing machine learning platforms for the entire company.

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 434,000 JPY/month
(includes a base salary from 336,044 JPY/month + 35 hours fixed overtime allowance from 97,956 JPY/month)*1
Standard annual salary: From 6,510,000 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.

View Engineer Page

More Information on Software Engineering Specialist

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