Software Engineer, ML Reliability/SysML

Tokyo, Japan · Engineering · EN/JP expand job description ↓


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.

This job is about development and operation of Mercari's Machine Learning (hereafter ML) technologies/systems.

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

・Development and operation of API/tools related to ML

・Automation of processes related to ML

・Improvement of ML clusters and support for other ML engineers

・Coordination with ML engineers in order to resolve different ML-related issues








▼Minimum Requirements

・Comfortable adding features and fixing bugs for those applications/middleware necessary to improve system performance and reliability

・Experience operating a system that uses TensorFlow/Chainer/Caffe etc.

・Over 3 years of development experience with Python and at least one of the following programming languages (Go, C++, Scala, Java)

・Basic knowledge of ML

▼Additional Qualifications

・Experience building and operating such middleware as Apache Spark, Apache Flink, etc.

・Experience using Kubernetes

・Experience developing and operating large scale services

・Experience using cloud services such as Sakura, AWS, GCP, etc.

・Low layer development experience

・Experience publicizing and making contributions to OSS







・Apache Sparkや Apache Flink等のミドルウェアの構築・運用経験







▼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












Mercari Engineering Blog


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