Software Engineer, MySQL Reliability

Tokyo, Japan · Engineering · EN/JP


At Mercari, our mission is to create value in a global marketplace where anyone can buy & sell, and we pride ourselves in taking on a challenge. We are looking for new members to join us in achieving this goal under our values - Go Bold, All for One, and Be Professional.

Here at Mercari, we have large MySQL databases that continue to grow alongside our customer base. The stable operation of our database is essential to maintain the high quality of our user experience. We are looking for candidates up to the challenge of maintaining the stable operation of Mercari’s MySQL database environment, in addition to building automation tools for various operations.

株式会社メルカリでは「新たな価値を生みだす世界的なマーケットプレイスを創る」というミッションを掲げ、あらゆる挑戦をしています。「Go Bold - 大胆にやろう」「All for One - 全ては成功のために」「Be Professional - プロフェッショナルであれ」という3つのバリューのもと、ミッション達成を共に目指していける仲間を募集しています。


▼Job Description

・Optimize performance of a terabyte-scale database

・Build and maintain automation tools for operations such as restoring and backing up a database

・Review code for applications when changes are being made to SQL and/or schema

・Work with developers to solve database related issues







▼Minimum Requirements

・Experience with RDBMS such as MySQL

・Skilled at database monitoring and performance tuning

・Knowledge of database load balancing

▼Additional Qualifications

・Experience with Perl, Python, or Go

・Experience building/maintaining a large scale service

・Experience with Sakura, AWS, GCP and other cloud services

・Experience releasing and contributing to OSS












▼Contract Type


 Probationary Period: 3 months (salary same as above)



▼Work Hours

・Fixed working hours 10:00-19:00

 Flex time (core hours 12:00-16:00, 60 minute lunch)


・Annual salary, paid monthly

・Based on your experience, skills and potential

・Reviewed twice a year


・5-day work week (Sat/Sun off)

・National holidays, paid time off, summer/New Year's vacation, congratulatory leave, compassionate leave








 フレックスタイム制度あり(コアタイム:12:00~16:00 [休憩60分] )









・Health insurance

・Incentive program

・Employee stock ownership plan

・Full transportation coverage

・Custom PC

・Dual screen if needed

・Company smartphone

・Visa support

・New Employee Benefits at Mercari「mercibox












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