We are looking for an experienced Backend Software Engineer to join the team behind LINE's Messaging Platform. This role involves designing, implementing, and evolving critical backend systems that enable global real-time communication at scale. You will play a technical leading role in ensuring high reliability, performance, and security, while contributing to system architecture and engineering excellence across teams to ensure seamless communication for hundreds of millions globally.
As a senior contributor to the Messaging Platform team, you will be responsible for designing, delivering, and operating highly scalable and reliable backend services that handle tens of billions of messages per day across the LINE ecosystem. Your work will include long-term architectural initiatives, cross-functional collaboration, and continuous improvement of our services scalability and maintainability.
You'll provide technical leadership in developing new features and improving existing systems, with a strong emphasis on system optimization, fault tolerance, observability, and CI/CD automation. You will also mentor other engineers, shape team standards, and help define platform strategy that anticipates future business needs.
*Scope of Change: There is a possibility of reassignment to any duties as determined by the company.
LINE Platform Server Function 開発チーム参考情報一覧
Our team is composed of talented engineers from diverse countries and backgrounds. We foster a culture of curiosity, learning, innovation, mutual trust and proactivity that empowers us to deliver at scale and adapt quickly to change.
Expected annual salary: JPY 12,000,000 to JPY 20,000,000
Form of salary: Monthly salary (including fixed overtime allowance)
Standard monthly salary: JPY 800,000 to JPY Negotiable
(Breakdown of standard salary)
―Base salary: JPY 621,000 to JPY Negotiable
―Fixed overtime allowance: JPY 119,000 to JPY Negotiable
Fixed overtime allowance of 35 hours will be provided, regardless of whether overtime work is performed.
Note 1: Overtime allowance is paid separately for overtime work in excess of the fixed 35 hours.
Note 2: Names of items related to monthly salary vary depending on the grades.
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.
Overtime allowance, commuting allowance,*1 LY Corporation Working Style allowance,*2 etc.
*1 You will be paid for the number of days you actually came to the office. (Maximum of JPY150,000/month)
*2 Allowance to improve your remote work environment (JPY11,000/month)
Type of employment: permanent employee (no fixed period of employment, 3-month trial period)
*No fixed period of employment
Kioicho Office (Kioi Tower, 1-3 Kioicho, Chiyoda-ku, Tokyo)
*You may be required to report to your assigned office based on work instructions. Initially, the office you report to will be your assigned location. Afterward, there is a possibility of reassignment to any business location determined by the company.
*The offices are wheelchair accessible.
*Note on measures against passive smoking: In principle, no smoking indoors (smoking rooms are available).
*Some departments may operate on the standard work hours (9:30 a.m. - 6:15 p.m.), while others may have a shift schedule.
Days Off: Two days off per week (Saturdays and Sundays*1), national holidays, New Year's holiday (December 29 to January 4)
*1 May differ depending on department.
*2 When a public holiday falls on a Saturday, employees will be given the previous business day off.
Comprehensive social insurance (health insurance, nursing care insurance, welfare pension insurance, employment insurance, workers' compensation insurance), 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, in-house massage room, club activities, subsidy for employee social events, and more
Training for Employees, Language Courses, Management Training, LY Corporation Job Challenge, Sabbatical Leave, Doctoral Studies Support Program, and more
Application
Coding test/Assignment
Interviews/ Background Check
Offer
Please fill out and submit the application form. To assess your eligibility for the position, we kindly ask you to provide the necessary personal information on the application form. Please note that this information will only be used for recruitment purposes. Please also note that your resume or other submitted documents will not be returned.
You will be notified of the results of the selection process within two weeks at the e-mail address you entered in the application form, regardless of whether your application is accepted or not. It may take about one week longer if the application period falls during the Golden Week and the New Year holidays.
Applicants who pass the document screening will be required to undergo multiple interviews, aptitude/technical tests, compliance checks, and reference checks, although the details vary depending on the position.
You will be notified of the results of the selection process within two weeks at the e-mail address you entered in the application form, regardless of whether your application is accepted or not.
The schedule will vary depending on interviews and other factors, but if everything goes smoothly, an internal offer will be made within about four to six weeks after the application is submitted. Please note that we will not respond to inquiries regarding the details or criteria of the selection process or the reasons for the results, regardless of the results of your application.