Software Engineer, Search Platform Development

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.

Mercari is an online marketplace used by millions of users each day to buy and sell items in the hundreds of millions. We are currently looking for an individual to help lead the development of search/data platforms meeting the following criteria:

  • Scalable : Capable of carrying out distributed searches across several billion pieces of data to quickly identify illegal items
  • Realtime : Capable of adding and updating product/action data within a few seconds
  • Semantic : Capable of using AI, machine learning, and natural language processing in tandem with the massive data logs that Mercari accumulates in order to improve services such as search, image recognition, action prediction, and irregularity detection.

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。


  • Scalable:数十億件以上のデータを素早く分散検索できる
  • Realtime:数秒以内で商品や行動データが追加・更新できる
  • Semantic:メルカリが蓄積する膨大なログをもとに、人工知能/機械学習/自然言語処理などの技術を用いて検索改善、画像認識、行動予測、異常検出などの最適化を可能にする


▼Minimum Requirements

・Experience using OSS search engines such as Solr and Elasticsearch

・Experience with streaming processing and the collection of large-scale logs via Apache Spark and Kafka

▼Additional Qualifications

・Experience developing and operating search and data services for a C2C or EC site

・Experience with the container-type virtualization services that make microservices possible, such as Kubernetes.

・Proficient in English



・Apache SparkやKafkaを用いたStreaming処理や大規模ログ収集の経験






▼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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