Mercari US

Data Specialist - Mercari

Mercari US  •  Tokyo, JP (Onsite)  •  1 day ago
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Job Description

JD in English follows. 和文の後に英文JDをご覧いただけます。

Data Specialist - Mercari

  • 雇用形態:正社員
  • 働き方:フレックスタイム制(コアタイムなし・フレキシブルタイムなし)
  • 勤務地:六本木

詳細はキャリアサイトの募集要項よりご確認ください

メルカリグループについて

あらゆる価値を循環させ、あらゆる人の可能性を広げる

「地球資源が限られているなか、より豊かな社会をつくるために何ができるか」。2013年、創業者の山田進太郎が世界一周の旅で抱いた課題意識から、フリマアプリ「メルカリ」は生まれました。私たちは、物理的なモノやお金に限らずあらゆる価値を循環させることで、誰もがやりたいことを実現し、人や社会に貢献するための選択肢を増やすことができると信じています。

テクノロジーの力で世界中の人々をつなぎ、あらゆる人の可能性が発揮される世界を実現していきます。メルカリグループの目指すべき方針については Mercari Culture Doc をご覧ください。

組織・チームのミッション

マーケットプレイス事業では、顧客価値の創出を通して様々な事業の成長を推進し、新たな価値を生み出す世界的なマーケットプレイスの実現を目指しています。日本最大のフリマサービス「メルカリ」の運営を中心に、越境事業やその他の新規事業を通じて、メルカリグループのミッション実現を推進しています。

メルカリのマーケットプレイスでは、100万点以上の商品が日々出品されています。しかし、カテゴリ・ブランド・商品属性・カタログといったデータ (以下、製品データ) が正しく構造化されていなければ、お客さまは欲しいものに出会えず、出品者は適正な価格で届けることができません。Product Data Foundationチームは、この課題の核心に挑むチームです。データの定義・入手・構築を行い、検索・レコメンド・出品・価格提案など、特定の機能・顧客体験ごとにプロダクト価値提供の責任を持つ各事業部門に提供するところまで、一貫して責任を持ちます。

その中で本ポジションでは、ファッション/ホビー/家電といったカテゴリごとの担当を持ち、担当カテゴリの製品データを要件定義から構築まで作り上げる役割です。

「どのカテゴリで、どの属性を、どの粒度・品質で揃えれば顧客体験とGMVが伸びるか」を、データの活用先である各事業部と議論しながら決め、AIとOperatorを活用して実際にデータを構築します。現在2名体制のチームを5名体制へ拡大し、対応カテゴリと自動化の範囲を広げていくフェーズです。

  • チームミッション
  • メルカリのミッション・バリューについての詳細はちらをご覧ください

業務内容

  • 各事業部と連携したデータ要件定義
  • AIおよびOperatorを駆使したデータ構築
  • AIを駆使したデータ構築業務の自動化・効率化
  • Product Manager/Operator/Engineerとの協働

ユニークなチャレンジ

  • 顧客体験・GMVを左右するインパクトの大きさ
  • カテゴリごとの要件をゼロから自分で定義できる面白さ
  • AIで業務プロセスを刷新できる伸びしろ
  • 新設チームだからこその0→1と、複数事業への越境
  • ドメイン知識×データ/AI活用スキルでキャリアを築ける

応募要件

  • 求める経験・スキル(必須)
  • 歓迎する経験・スキル
  • 語学力

※CEFRの詳細については、こちらをご覧ください

メルカリグループについて知る

選考について

メルカリグループではメルカリグループおよび各カンパニーのミッションとバリューへの共感・体現を大切にしています。メンバーが発揮する価値の総量が最大化されるような組織づくりを推進するために、候補者のみなさんの経験やスキルをより正しく理解したいと考えています。

選考の流れ

  • 書類選考
  • リファレンス:オンライン回答形式のもので、最終選考の前後でお願いします
  • オファー:最終選考とリファレンスの内容より決定されます

※詳しくは こちらのページをご覧ください

選考における機会の平等

メルカリでは、バックグラウンドによって個人の可能性が決めつけられることなく、自由に価値を生みだす機会を手にできる社会の実現を目指しています。そしてメルカリがミッションを実現するために「Inclusion & Diversity」という考え方は不可欠な存在だと考えています。

採用活動においても、メルカリのミッション・バリューに共感する、様々なバックグラウンドの方にジョインしていただけるよう、年齢、性別、性的指向、人種、宗教、身体能力、その他記号に基づくあらゆる差別をなくすことを約束します。

詳しくは、I&D statementをご覧ください。

なお、ご応募の際にはプライバシーポリシーをご確認ください。

Data Specialist, Product Data Foundation

  • Employment Status: Full-time
  • Work Hours: Full Flextime (no core time)
  • Office: Roppongi

For more details, see the Overview of Our Positions section on our Careers site.

About Mercari

Circulate all forms of value to unleash the potential in all people

"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential. For more information about Mercari Group’s mission, see Mercari’s Culture Doc

Organization/Team Mission

In the Marketplace business, we drive the growth of a wide range of businesses through the creation of customer value, aiming to build a global marketplace that generates new value. In addition to operating Mercari, Japan's largest C2C marketplace, we advance Mercari Group's mission through cross-border and various new businesses.

More than one million items are listed on the Mercari marketplace every day. However, unless Product Data—categories, brands, item attributes, and catalog data—is properly structured, customers cannot find what they want and sellers cannot sell at the right price. Product Data Foundation is the team tackling the core of this challenge. We own Product Data end to end, from defining, sourcing, and building it to delivering it to the Value Stream teams responsible for search, recommendations, listing, and pricing suggestions.

Within the team, Data Specialists own specific categories (fashion, ACGE, home appliances, and more) and build the data for their category end to end. You will work directly with Value Stream teams to decide which attributes, at what granularity and quality level, will move the customer experience and GMV, and then get the data built by directing AI and Operators. The team is growing from 2 to 5 Data Specialists as we expand both category coverage and automation.

*Product Data Foundation is a new team launching in October 2026 under MK Core Product. If you join before then, you will temporarily be assigned to MK Core Product > Matching team.

  • Team mission

See here for more information about our mission and values.

Work Responsibilities

  • Defining data requirements together with each Value Stream team
  • Building data by leveraging AI and Operators
  • Automating and streamlining data construction with AI
  • Collaborating with Product Managers, Operators, and Backend Engineers

Unique Challenges

  • The quality of Product Data determines the accuracy of every customer touchpoint in the marketplace, including search, recommendations, listing, and pricing suggestions. Your judgment on which attributes to build, and how far to go, translates directly into the search experience and GMV of your categories.
  • Categories such as fashion, home appliances, and ACGE (anime, comics, games, entertainment) have completely different data characteristics. You get to define and deliver the optimal data requirements (target categories, granularity, attributes, quality standards) for each of them.
  • Today, Product Data construction still relies heavily on manual work. There is significant room to fundamentally transform this process with AI—from automated mapping and attribute enrichment to Human-in-the-loop design, standardization, and cross-category rollout.
  • As a newly launched Platform Team, you can design and standardize everything from data requirements to construction processes and quality standards from 0 to 1, rather than accumulating one-off fixes. You will work directly with multiple Value Stream teams, including cross-border (XB) and new businesses, and can go beyond data into shaping new customer experiences.
  • By combining category domain knowledge with data and AI skills, you can build a career as a professional in the Product Data domain.

Qualifications

  • Required Experience/Skills
  • Preferred Experience/Skills
  • Language

For details about CEFR, see here.

Learn More About Mercari Group

Recruiting at Mercari

At Mercari Group, we value empathizing with and embodying the mission and values ​​of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible.

Recruiting cycle at Mercari Group

  • Application screening
  • Skill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.)
  • Interview: The number of interviews may vary depending on the position.
  • Reference check: We will ask for online references around the timing of the final interview.
  • Offer: Offers will be determined carefully in consideration of the final interview and the reference check.

 Learn more about our recruiting process here.

Equal Opportunity Hiring

Here at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Inclusion & Diversity is essential for us to achieve our mission.

This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our I&D statement.

Please read and acknowledge our Privacy Policy prior to submitting your application.

Mercari US

About Mercari US

Mercari launched in 2013 in Japan, and has since become the largest mobile marketplace in the Japanese market. Now we’re on a global mission to change the way people buy and sell. And with a fast-growing user base in the U.S. of over 50 million downloads and 350,000 new listings every day, we are on our way to doing just that.

The work we do puts money in the pockets of sellers. It puts the things one person no longer needs into the hands of someone else who can use it, resulting in positive outcomes for our customers and the environment.

As we grow, your career opportunities with Mercari grow. As our teams expand, your responsibilities expand. Our teams are supported with access to new tools, technologies, and learning opportunities. We will never stop growing.

Industry
IT & Software
Company Size
501-1,000 employees
Headquarters
Palo Alto, California
Year Founded
Unknown
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