Software Engineer, ML Site Reliability/SysML

Tokyo, Japan · Engineering · EN/JP


▼Our Mission

Mercari’s mission is to create value in a global marketplace where anyone can buy & sell.

Countless products and services are being produced and sold around the world, and we believe that it is a waste of the earth’s resources to discard items that could be of value to other people. In order to eliminate the concept of “throwing away,” the Mercari marketplace app is growing in Japan and the US as a safe and easy way for people to buy and sell items from each other.

To achieve this mission, we are aiming to become one of the world’s leading tech companies.

In order to become a company capable of solving people’s problems through technology, we are putting significant effort into the hiring and training of engineers to increase our team of talented members, and to create an environment where they can provide their very best work.

▼Our Values (Go Bold, All for One, Be Professional)

The path to creating a leading global marketplace is not without challenges. In order to create new and innovative solutions, all members must take advantage of their unique skill sets and have a sense of responsibility and ownership for their work. In order to ensure our success in creating the best product possible, all members must embody our three values: Go Bold, All for One, and Be Professional.





▼3つのバリュー(Go Bold, All for One, Be Professional)

新たな価値を生み出す世界的なマーケットプレイスを創るために我々は集まっていますが、この目標への道のりは決して平坦ではありません。まだ誰も挑戦したことのないようなイノベーションや破壊的な創造を起こすため、我々は各自がオーナーシップを持ち、専門的能力を発揮することで、メルカリというチームとして最高のプロダクトを創ります。このことを達成するために我々は3つのバリュー(Go Bold, All for One, Be Professional) という全社員が共有する行動指針のもと行動しています。

▼Job Description

As a member of the SysML team, you will be responsible for the development and management of machine learning systems to improve their reliability, performance and scalability. The SysML team in Mercari is developing and operating machine learning systems that are used for both Mercari's internal and external services. In order to contribute to the expansion of the business, we have developed a machine learning orchestration platform, Lykeion, and are working to improve it to productionize and maintain machine learning services, such as automated item listing (Kando) and image search.




▼Minimum Requirements

▼Additional qualifications




▼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
















・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











Engineering Manager Drink Meet-up記事


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