Ruby Engineer

Application deadline date has been passed for this Job.
Full-Time Employee
  • Post Date: 2019-09-01
  • Career Level Programmer
  • Offerd Salary ¥4 - ¥6 Million
  • Experience Fresh
  • Number of employee 1
  • Gender Required Both
  • Qualification Bachelor Degree
  • Working Hour 09: 30〜18: 30
  • Trial Period 3 months
Job Description

You will be engaged in the entire server-side development related to the existing photo sharing service “Rukumi Photo” as well as “Lukumi nap check”, which was newly released in 2018. 

・ Development environment: 

・ Language: Ruby (Web), Swift (iOS), Java (Android) 

・ Framework: Ruby on Rails 

・ DB: Postgresql, Redis 

・ Version management: Git 

・ Repository management: Bitbucket 

・ Infrastructure: AWS 

・ CI : Wercker, Jenkins 

· Server monitoring: Zabbix, NewRelic 

· Communication: Slack 

· Documentation: Confluence 


service Example: 

About “Lucmee nap check”, the sensor will only warn you when you stop sleeping or lying down Instead, the body orientation is automatically recorded on the check sheet. In addition to checking by the eyes of a nursery teacher so far, it is a service to watch the children in the nap for a second even longer by double check with the sensor. 

[About the Company] 

・ In order to solve the negatives surrounding users (nursery schools and guardians), the company will use IoT to solve the management issues of nursery schools in 2017. We are promoting various business developments, such as launching the health care business “Rukumi-Noon Check”. In the future, we plan to start overseas business. 

・ In 2017, we won the “Startup World Cup”, one of the world’s largest startup pitch contests 


・ The number of employees is more than 50 and the average age is 35 (as of April 2017). 

・ Because there are many employees with children, the work style is flexible. 

・ There are many members who have joined the group because of the sympathy for the vision, and the business 

 is unique. 

・ Although it is still a start-up scale, it is a well-ventilated environment with few retirees.

Hiring requirements

[Mandatory requirements] 

・ Experience working on web application development using Rails 

・ Maintenance of web application using Rails 

・ Operation experience 

・ RSpec or writing tests using 

MiniTest regularly 

・ Rails upgrade of Rails of web application using Rails and related gems are regularly updated 

・ Gem is developed and published to 

・Development experience using github flow 

・Management experience as a playing manager

Treatment conditions / sales bonus

Monthly salary, bonus twice a year, full payment of transportation expenses


Social insurance complete, telecommuting system (consultation required), PC / monitor granted (OS selectable), mobile phone provided, health checkup, influenza vaccination assistance, first aid kit, self-development assistance (qualification acquisition, participation in various seminars, etc.) Expenses, book purchases, etc. * There is an upper limit), Office Glico, Water Server.

Selection process

Document screening 


Primary interview 


Secondary interview 


Final interview  

* The number of screenings and content may change. 


[Annual holiday number: more than 120 days] 

complete a five-day workweek, a public holiday, (3 days between July to September) summer vacation, year-end and New Year holidays (December 29 to January 3), paid leave ( Granted 1 day immediately after joining the company, 10 days after joining the company, and up to 20 days depending on the number of years of service), Keio leave, nursing / nursing leave, maternity / postpartum leave, menstrual leave, marriage leave.

・ The working conditions, etc. specified in this job offer may differ from the working conditions at the time of conclusion of the labor contract. 

・ This job offer includes information that has not been disclosed to the public, so it is prohibited to provide or forward it to third parties.