Minato, Tokyo Mercari, Inc.

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

Senior Analytics Engineer - Mercari

  • 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
Our team's mission is to create a "Seamless Data Experience for Everyone."

Mercari's data analytics environment is used by around 1,200 employees per month (approximately 60% of our entire workforce). With offerings like "Socrates," our LLM-based analytics application, our data infrastructure is already one of the most advanced in Japan.

However, the needs for data utilization and the surrounding technologies are changing rapidly. This creates new challenges daily, as our existing approaches find it difficult to meet the growing demand for enhancements.

To adapt to these changes, we are actively leading new approaches, such as automating the data modeling lifecycle. Our goal is to build an environment where data products can significantly accelerate product development. By leveraging AI/LLM to solve these structural challenges, we will streamline the data experience for all employees and maximize the value we provide to our customers.

See here for more information about our mission and values.

Work Responsibilities
This role will lead the evolution of Mercari's data analytics environment to its next phase. You will be responsible for building a highly automated and intelligent data ecosystem, enabling all employees to derive value from data with the highest levels of efficiency and trust.

Responsibilities

  • Continuously improve and add value to existing data products used company-wide, such as Socrates, Basic Tables, and various dashboards.
  • Utilize technologies like AI/LLM to build a mechanism that automates the entire data modeling lifecycle, from identifying opportunities for optimization through to design and implementation.
  • Define and implement a semantic layer to act as a Single Source of Truth (SSoT) for both humans and AI, thereby reducing the risk of decisions based on incorrect data.
  • Develop a business metadata foundation to convert department-siloed knowledge (such as marketing strategies) into a common, company-wide asset.

Note: The scope of work is not fixed and will change flexibly according to the scale of challenges the team faces and technological progress.

Unique Challenges

  • Leading at the Forefront: Mercari is a leader in applying data and AI, exemplified by our LLM application, "Socrates." Because we are at the forefront, you will be tackling challenges that others have yet to encounter.
  • Beyond Traditional Engineering: This is not a conventional data engineering role focused on simply preparing data. You will step into an unprecedented field, tasked with unleashing the synergy between data, AI, and human intelligence.
  • Solving Next-Generation Problems: The success of our advanced tools has introduced new, complex problems, such as managing query performance at scale and maintaining data trust in an automated environment. Your challenge will be to lead the way by:

  • Building an autonomous system where AI continuously drives the data modeling lifecycle.

  • Architecting a semantic layer from the ground up to serve as a single, reliable source of truth for both people and algorithms.

Your work will directly enhance the quality of company-wide decision-making and maximize the value we deliver to our customers. This is a chance to define the future of data-driven organizations.

Qualifications

  • Required Experience/Skills

  • Resonates with the mission and values of the Mercari Group and its individual companies

  • Experience collaborating with stakeholders who use data and leading initiatives to solve business challenges
  • Strong interest in, or hands-on experience with, improving data platforms and streamlining operations using AI/LLM
  • Experience designing, building, and managing data marts in a data warehouse (e.g., BigQuery) using SQL
  • Experience designing and implementing data governance and semantic layers using BI tools such as Looker
  • Preferred Experience/Skills

  • Proactively keeps up with fast-changing technology trends, especially in AI/LLM, and applies them effectively in day-to-day work

  • Experience managing projects, particularly in gathering and prioritizing requirements from multiple stakeholders and defining project scope

  • Language

  • Japanese: B2 (Must)

  • English: B2

For details about CEFR, see here.

Learn More About Mercari Group

  • Careers site:
  • Mercan:
  • Social media: X / Linkedin

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.

Senior Analytics Engineer - 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
私たちのチームはSeamless Data Experience for Everyoneをミッションに掲げています。メルカリのデータ分析環境は月間で1200人程度(全従業員の6割程度)が利用し、すでにSocratesというLLMベースの分析アプリケーションを提供するなど 、その土壌は国内でも最先端の水準にあります。

しかしながら、データ活用のニーズやそれを取り巻く環境は急速に変化しており、既存のアプローチでは需要増にエンハンスの供給が追いつかない等、日々新たな課題が発生しています。私たちは、変化へ柔軟に対応し、データプロダクトがプロダクト開発を何倍にも加速させる環境を構築するため、データモデリングのライフサイクル自動化といった新たなアプローチを積極的にリードします。AI/LLMを活用してこれらの構造的な課題を解決し、全従業員のデータ活用体験を滑らかにすることで、お客さまへの提供価値の最大化を目指します。

業務内容
メルカリのデータ分析環境を次のフェーズへと進化させ、全従業員が最高の効率と信頼性をもってデータから価値を引き出せる、高度に自動化・知能化されたデータエコシステムの構築をリードしていただきます。

(業務例)

  • 全社で利用されるSocrates、Basic Tables、各種ダッシュボードといった既存データプロダクトの継続的な機能改善・価値向上
  • AI/LLM等の技術を活用し、最適化すべき処理の検知〜設計〜実装までのデータモデリングのライフサイクル全体を自動化する仕組みの構築
  • AIと人間の両方が信頼できるSingle Source of Truthとして機能するセマンティックレイヤーの定義・実装による、誤ったデータに基づく意思決定リスクの低減
  • 部門ごとにサイロ化しがちな知識(マーケティング施策など)を、全社の共通資産へと転換させるビジネスメタデータ基盤の整備

※ 業務内容は固定されたものではなく、チームが向き合うべき課題の大きさや技術の進歩に応じて柔軟に変化します。

ユニークなチャレンジ

  • メルカリは、LLMを活用した分析アプリケーション「Socrates」を全社展開するなど、データとAIの活用において業界をリードしています。しかし、その先進性ゆえに、私たちは今、新たなフロンティアに立っています。
  • 従来のデータエンジニアリングが「データを集め、使えるように整える」ことを主眼としていたのに対し、このポジションではデータとAI・人間の協業の可能性を最大限にunleashするという、まだ前例のない領域に挑みます。
  • 例えばSocratesのようなツールの浸透は、一方でクエリのコストやパフォーマンスへの無自覚さを生み、データ信頼性の担保をより困難にするという新たな課題を生んでいます。これらの次世代の課題に対し、AIが自らデータモデリングのサイクルを回し続ける仕組みや、AIと人間が等しく信頼できるデータの礎となるセマンティックレイヤーをゼロから設計・構築することで、意思決定の質を高め、最終的にはお客さまへの提供価値を最大化するという、未踏のチャレンジをリードします。

応募要件

  • 求める経験・スキル

  • 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に共感していただける方

  • データを活用するステークホルダーと協業し、課題の解決をリードした経験
  • AI/LLMを活用したデータ基盤の改善や業務効率化に対する強い関心、または実務経験
  • データウェアハウス(BigQuery等)におけるSQLを用いたデータマートの設計・構築・運用の経験
  • Looker等のBIツールを用いたデータガバナンスやセマンティックレイヤーの設計・構築の経験
  • 歓迎する経験・スキル

  • 変化の速い技術トレンド(特にAI/LLM関連)を自律的にキャッチアップし、積極的に業務へ活用しようとする姿勢

  • プロジェクトマネジメントの経験(特に、複数の関係者が求める要件を整理、取捨選択し、プロジェクトのスコープを設定した経験)
  • 語学力

  • 日本語:B2 (Must)

  • 英語:B2

※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

  • キャリアサイト
  • メルカン
  • SNS:X / Linkedin

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
  • 課題選考
  • 面接:ポジションにより、複数回の面接をお願いします
  • 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。



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