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- Back-end Engineer / Sticker Service Development
Back-end Engineer / Sticker Service Development
Position Outline
Work on back-end development and operation of high throughput, user-facing services that support the sticker, emoji, and theme features in the LINE application.
Job Details
Team members in this position are responsible for the leading the back-end development and operation of the sticker, emoji, and theme features of the LINE application.
You will develop scalable service architecture and storage solutions to support tens of millions of users and tens of millions of products.
High availability services with throughput exceeding 200,000 operations per second, support a core feature of the LINE application and contribute directly to business value by integrating LINE's internal application platforms with user-facing features.
We are responsible for the back-end implementation of core communication features which enhance the interactions among LINE's millions of users on a daily basis.
Mission/Goals
- Our mission is provide a scalable services that enable business features to be developed flexibly and with minimal overhead.
- We strive to build a positive and supportive team and encourage members to realize their goals for personal growth and to exercise autonomy while working on projects.
Responsibilities
- Lead the development of back-end microservices which support user-facing features.
- Contribute to architectural designs which can improve the efficiency and flexibility of our services.
- Ensure a high standard of availability, reliability, fault tolerance for services which experience high throughput.
- Mentor and train team members on software implementation and operational best practices.
- Cooperate with other teams and support high quality implementation through active participation in code and design reviews.
Responsible Service
- LINE Sticker, Theme, and Emoji
- LINE STORE
- LINE Stickers Premium
Ideal Candidate
- Individuals who can smoothly cooperate with stakeholders in different domains and communicate important concepts in an accessible, effective way.
- Individuals with strong prioritization skills and who can negotiate and compromise with others in order to meet business needs and deadlines.
- Individuals who can contribute to the team in a leadership role and enable both the personal skill growth of individual team members and increased capacity of the team as a whole.
Required Experience/Skills
- 5+ years of server-side application development experience.
- Knowledge of and experience using scalable data storage technology such as MySQL, Redis, MongoDB, Kafka and HBase.
- Fundamental computer science knowledge.
- Business level verbal communication skills in Japanese or English.
- Business level written communication skills in English.
Preferred Experience/Skills
- High-traffic service development and design
- JVM application tuning and monitoring.
- Experience in the coaching, management and/or leadership of a technical team.
- Microservice architecture.
- Kubernetes-based application development.
Development Environment
- Product and Service Development: Java, Kotlin, Spring Framework.
- Observability: Prometheus, Grafana, AlertManager, Elasticsearch, Kibana.
- Storage: MySQL, MongoDB, Redis, Apache Kafka.
- Infrastructure: Container (k8s), VM/PM on Private Cloud.
- Infrastructure as Code, CI/CD, Configuration repository: Ansible, ArgoCD, Jenkins, GitHub Actions.
Salary
Expected annual salary: JPY 9,000,000 to JPY 18,000,000
Form of salary: Monthly salary (including fixed overtime allowance)
Standard monthly salary: JPY 600,000 to JPY 1,200,000
(Breakdown of standard salary)
―Base salary: JPY 465,000 to JPY 934,000
―Fixed overtime allowance: JPY 134,000 to JPY 267,000
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.
Type and Period of Employment
Type of employment: permanent employee
Note: No fixed period of employment
Selection Process
-
Step1
Application
-
Step2
Coding test/Assignment
-
Step3
Interviews/ Background Check
-
Step4
Offer
We have designed our selection process with an emphasis on technical aptitude and shared values.
Through this process, we aim not only to assess technical skills but also to deepen mutual understanding with the team.
Hard Skills Evaluation
- Pre-interview Web Coding Test (up to 3 hours)
- Live Coding interview
- Whiteboard Discussion interview
Soft Skills Evaluation & Cultural Fit
- Interviews with team members, discussions based on the resume
How to Apply
Please fill out and submit the application form.
Document Screening
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.
Interview, aptitude test, technical test, compliance check/reference check
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.
Other
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.
Allowances
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)
Work Location
Japan (You can live anywhere as long as you reside in Japan.)
You may be required to report to your assigned office to work.
Head office: Chiyoda-ku, Tokyo, Japan
Offices: Tokyo (Kioicho)
The offices are wheelchair accessible.
Note on measures against passive smoking: In principle, no smoking indoors (smoking rooms are available).
Subject to change to an office as determined by the company.
Work Hours
Flextime system: standard work hours 7 hours 45 minutes (no core hours)
Start and end times are up to the individual. However, the company's standard working hours are from 9:30 a.m. to 6:15 p.m.
Note: Some departments may operate on the standard work hours (9:30 a.m. - 6:15 p.m.), while others may have a shift schedule.
Holidays and Leave
Days Off
Two days off per week (Saturdays and Sundays*1), national holidays, New Year's holiday (December 29 to January 4)
Leave
Paid leave, special paid leave (for condolence, maternity, sick childcare, nursing care, legally-designated communicable disease, etc.), Happy Friday*2, sabbatical leave
Other
Work styles for those engaged in childcare and nursing care
*1 May differ depending on department.
*2 When a public holiday falls on a Saturday, employees will be given the previous business day off.
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
Notes
Work Location Notes
【Upon Hiring】
As stated in the job posting under "Work Location".
Note: There are times when you may be required to come to the office due to work-related instructions.
【Scope of Changes】
Any office as designated by the company.
Job Description Notes
【Upon Hiring】
As stated in the job posting under "Job Details".
【Scope of Changes】
Any tasks as designated by the company.