Backend Development for Features Related to LINE Stickers, Themes, and Emoji

JD Code: SWE-6-53

Course Name

Software Engineer course

*You can choose from the above courses as the department (position) in which you would like to work.

domain

Server-side

Job Description

Team members in this position are responsible for joining the back-end development and operation of the Sticker, Theme, and Emoji features of the LINE application. We concentrate on scalable service architectures and storage solutions which support tens of millions of users and tens of millions of products. Our team develops and maintains high availability services with throughput exceeding 200,000 operations per second that support core features of the LINE application and contribute directly to business value by integrating LINE's internal application platforms with user-facing features.

Required Experience / Skills

• Experience with a programming language such as Java, Kotlin, Python, or C++
• Knowledge of fundamental computer science concepts
• Knowledge of a data storage technology such as MySQL

Desired Experience / Skills

• Knowledge of API or microservice development
• Experience with JVM-based application development
• Experience with a data storage technologies such as MySQL, MongoDB, Redis, Kafka

Duration of the Internship

10/8/2026 ~ 18/9/2026 (6weeks)

*In principle, 3 days a week, excluding Saturdays, Sundays, and public holidays.
*The standard working hours are from 10:00 to 18:45, including a 1-hour break.
*Details will be discussed and determined upon join.

Internship Format & Location

Hybrid

*In principle, 3 days of office attendance per week is standard (negotiable).
*The frequency of office attendance may change depending on your residential area (e.g., if commuting expenses exceed the payment limit, etc.).
*Details will be discussed with the host organization upon passing the selection process.

Office Location

Akasaka Office (Tokyo) or Hakata Office (Fukuoka)

*If more than one office is listed, the location will be determined based on the job description, your residential area, etc.
*Details will be discussed with the host organization upon passing the selection process.

Benefits

• Hourly wage: 2,600 JPY
• PC lending
• Commuting and accommodation expenses for office visits provided (Subject to conditions/limits)

Requirements for Application

• Currently enrolled in school and have no experience working as a full-time employee (excluding high school students)
• Possess eligibility to work in Japan
• Have a network environment at home suitable for performing work
• Residing in Japan during the internship period

Selection Process

• Step1

  Course selection

  April 15 (Wed) – May 25 (Mon), 10:00
• Step2

  Coding test

  May 25 (Mon) – June 1 (Mon), 10:00
• Step3

  Interview

  From early June
• Step4

  Notification of results

  Mid-June – Early July

*Your preferred position(s) will be confirmed at the time of the Web Test.
*Interviews will be arranged for the designated position(s) based on the Web Test results and your preferences.

Application Deadline

May 25, 2026, 10:00 AM

※The Web Test will be distributed after the deadline (Examination period: 1 week).

Notes

• When submitting the Web Test, you will be asked to select and answer for multiple preferred positions.
• You may apply for multiple positions only within the same course.
• You can update your survey responses via My Page until 10:00 AM on Monday, May 25.