Engineer

Job Details

The following materials outline LY Corporation's systems that support the growth of engineers.
The last page includes tips on interviews and coding tests. Please take a look.

Software Engineer

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.

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.

Infrastructure Engineer

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.

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.

Data Science

Positions related to Data Science are responsible for constructing and improving large scale AI and machine learning systems, analyzing data and making proposals. This work utilizes a vast amount of data from a wide variety of LY Corporation’s services

Artificial Intelligence (AI): The AI team is responsible for research and development in the technical areas of natural language processing, speech processing, and image/video processing. This team engineers solutions to user issues across a wide variety of LY Corporation’s services through writing papers, presentations and discussions at international conferences, and research and development of high-quality, general-purpose fundamental technologies.

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 2026 (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	At LY Corporation, we encourage all employees to collaborate and achieve the highest performance as a team. As long as you have a stable internet connection and your work is not hindered, you can choose to work either from the office or remotely. By realizing a work style that is not confined to a specific location, we aim to create services that bring "WOW" and surprises ("!") to our users. To support your working environment, we provide an allowance known as the LY Corporation Working Style Allowance (11,000 JPY/month). - An application is required before working outside of your home or office. Office LY Corporation headquarters Tokyo Garden Terrace Kioicho Kioi Tower, 1-3 Kioicho, Chiyoda-ku, Tokyo, 102-8282 - 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. - Depending on your job placement, you may be assigned to work at a different office.
Work Hours	Flextime system (no core hours) Standard work hours: 7 hours 45 minutes
Holidays and Leave	Two days off per week (Saturdays and Sundays1), 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 Friday2, 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	The following is an example of the salary offered upon hiring Standard monthly salary: From 336,000 JPY/month (includes a base salary from 259,616 JPY/month + 35 hours fixed overtime allowance from 76,384 JPY/month)1 Standard annual salary: From 5,040,000 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
Applying for multiple positions	Candidates will go through the selection process separately for each position, and they will be asked to select their preferred one before receiving an informal offer. Candidates cannot submit a multiple-choice application for courses within the engineering position.

Selection Information

Selection Process	Step1 Application Step2 Coding Test Step3 Interview(s) Step4 Offer
Re-Challenge System	The Re-Challenge System lets applicants who do not pass the coding test to 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 Infrastructure Engineer position during Round 1 can take the coding test for a Software Engineer position in Round 2) There is no Re-Challenge system for interviews.

Selection Process

Step1

Application
Step2

Coding Test
Step3

Interview(s)
Step4

Offer

Re-Challenge System

The Re-Challenge System lets applicants who do not pass the coding test to 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 Infrastructure Engineer position during Round 1 can take the coding test for a Software Engineer position in Round 2)
*There is no Re-Challenge system for interviews.

Apply

We are no longer accepting applications for 2026 New Graduates.