Mercari

Security Engineer - Mercari (Internship)

Remote Tokyo, Japan
Git Terraform Go PHP SQL GCP Docker Python JavaScript AWS Azure Kubernetes
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Description

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

We are currently taking application from those who graduate after March 2024. 2024年3月以降に卒業される方のインターンシップ応募を受け付けています。

Introduction

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.

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.

Position Overview

Work Responsibilities

As an Intern in the Mercari Security Engineering and Strategy Team, you will have the opportunity to participate in security design, process reviews as well as develop and deploy security countermeasures, and execute penetration tests. This is a unique role within Mercari since you will be involved in high-stakes projects across the organization. The candidate will be exposed to the following topics, and will be invited to work on one opportunity of his/her choice:

  • Monitoring and log analysis
  • Penetration testing, threat modeling and security automation
  • Web and mobile application security testing
  • Technical project management

For each of these topics, the candidate will need to:

  • learn about Mercari’s infrastructure
  • create a map representing how systems interact with each other
  • understand the underlying code and structure
  • conduct supervised experimentation to achieve a decided objective
  • describe discoveries, identify for improvements, and present findings to the stakeholders
  • cooperate with the system owners to plan improvements

Why would Mercari be a good place to learn about these topics?

  • Mercari’s infrastructure relies on current cloud base technology
  • the scale of the data and systems that Mercari is using makes it a challenging environment and a unique opportunity to tackle difficult problems


Unique and Bold Challenges

  • The Security Engineering and Strategy team at Mercari is responsible for dealing with a vast array of data, logs, and dependencies. As a member of the team, you will be able to employ cutting-edge and complex cloud infrastructure systems to help us tackle complex challenges.
  • With a rapidly growing number of organizations and services, it is extremely important for Mercari to introduce automation and reduce dependency on manual work as much as possible. This is an exciting opportunity to gain experience in helping us build out our security systems and solve interesting challenges in a fast-paced environment.


Minimum Requirement

  • Shared understanding and belief in our company’s mission and values
  • Strong interest in security
  • Able to work more than 20 hours per week for 2 or 3 months
  • Programming experience with one or more programming languages including but not limited to: Go, Python, PHP, Javascript
  • Enrolled in a Bachelor's degree (or higher) program or technical school in Computer Science, Information Security, or other engineering-focused major
  • Effective interpersonal and communication skills
  • Basic Linux understanding and an ability to operate Linux
  • Basic familiarity with SQL Querying
  • Able to join our internship from July 2023

Preferred Requirement

  • Basic understanding or strong interest in any of the following:
    • Public cloud infrastructure platforms (GCP, AWS or Azure)
    • Container and orchestration technologies (Docker, Kubernetes)
    • Capture the flag (CTF), bug bounty, penetration testing, Web or mobile application security testing,
    • Security automation and DevSecOps
  • Basic experience with software development tools such as Git, dependency management, build and deployment tools
  • Understanding of modern Web or mobile applications


Screening Criteria

  • Fundamental engineering skills, including computer and network architecture, operating systems, and protocol understanding
  • Coding/scripting skills
  • Motivation and ability to learn new technologies
  • Teamwork skills in a diverse environment
  • For details, please see this page and Mercari Careers Student Page


Language Requirements

English or Japanese: Independent (CEFR-B2) *For details about CEFR, see here

  • The Security Team is a diverse team with members from around the globe. Team members have various levels of Japanese and English proficiency and we value mutual effort, understanding, and support, we aim to meet in the middle to make everyone feel comfortable regardless of the member’s native language.

Related Articles

Working Conditions


Employment Status

Intern

Office

Roppongi

  • Smoking is prohibited within our offices
  • Mercari has introduced a work style policy called “Your Choice.” Each member is free to choose whether they want to work in the office or work fully remote. *Exceptions made for certain kinds of work.

Work Hours

  • Able to work more than 20 hours per week
  • 3 months of Internship is encouraged. Please consult with the recruiter if you prefer shorter/longer period

Salary

  • Hourly wage (Salary: Negotiable)


Benefits

  • Full transportation coverage
  • Custom PC
  • Dual screen if needed
  • Visa support
  • Accommodation for those who are from outside of Tokyo area



Media


Corporate Sites


Owned Media

はじめに

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。

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。

募集要項

業務内容

メルカリのセキュリティ・エンジニアリングチームのインターンとして、セキュリティデザインおよびプロセスのレビューをはじめ、セキュリティ対策の構築・展開、ペネトレーションテストなどに取り組んでいただきます。メルカリのセキュリティエンジニアは、組織全体に影響を及ぼすプロジェクトに関わる社内でも特殊な役割です。候補者は、下記のトピックに関わることができ、いずれかの希望する業務を一つ担当していただきます。

  • モニタリングとログ解析・ログ基盤の開発
  • ペネトレーションテスト、脅威モデリング、セキュリティ自動化
  • ウェブおよびモバイルアプリケーションのセキュリティテスト
  • テクニカル プロジェクトマネジメント

各トピックを担当するにあたり、候補者には下記のことが求められます。

  • メルカリのインフラについて学ぶ
  • 各システムがどのように連携しているかを表した構成図の作成
  • 基礎となるコードや構造の理解
  • 決めた目標を達成するために他メンバーの指揮監督のもと実験を実施
  • 発見事項、改善点、分析結果を関係者に説明および提案
  • 改善案を作成するためにシステムのオーナーと連携

これらのトピックを学ぶためにメルカリが適した職場である理由は?

  • メルカリのインフラはInfrastructure as codeやコンテナなど、最新のクラウド基盤技術を利用して管理されている
  • メルカリが使用しているデータやシステムの規模は大きく、チャレンジングで難しい問題に取り組むことができる


ユニークなチャレンジ

  • メルカリのセキュリティエンジニアリングおよびストラテジーチームは、膨大なデータ、ログ、依存関係を扱う役割を担っています。チームの一員として、最先端かつ複雑なクラウドインフラシステムを使用しながら、未知の問いに挑戦することができます。
  • 急成長・急拡大する組織とサービスを持つメルカリだからこそ自動化に取り組み、マニュアル作業への依存を減らすことは非常に意義のあることです。速いスピードを維持しながら、セキュリティシステムの構築のみならず課題解決をすることは、とてもエキサイティングな経験を得られると考えています。


必須条件

  • メルカリのミッションとバリューに共感していただける方
  • セキュリティ分野に対する強い興味
  • 2-3ヶ月間、週20時間以上勤務可能な方
  • 一つ以上のプログラミング言語で開発経験のある方
    • 例:Go、Python、PHP、JavaScriptなど
  • コンピュータサイエンス、情報セキュリティ、その他エンジニアリング系の学部・学科を専攻されている方(学士課程以上もしくは専門学校)、または同様のスキルがあること
  • 効果的な対人・コミュニケーションスキル
  • Linuxに関する基本的な知識とLinuxを運用できる能力
  • SQLクエリの基礎知識
  • 2023年7月以降にインターン参加可能な方


歓迎条件

  • 下記のいずれかの基本的な知識もしくは強い関心:
    • パブリッククラウド インフラプラットフォーム(GCP、AWS、Azure)
    • コンテナおよびオーケストレーション技術(Docker、Kubernetes)
    • Capture the Flag(CTF)、バグバウンティ、ペネトレーションテスト、ウェブもしくはモバイルアプリケーションのセキュリティテスト
    • セキュリティの自動化およびDevSecOps手法
  • Git、依存関係管理、ビルド・デブロイツールなどのソフトウェア開発ツールを使った基本的な経験
  • 最新のウェブもしくはモバイルアプリケーションの知識


選考のポイント

  • コンピュータやネットワークアーキテクチャ、オペレーティングシステム、プロトコルの知識などの基本的なエンジニアリングスキル
  • コードやスクリプトを書くスキル
  • 新しい技術を学ぶ意欲と能力
  • 多様な環境で働くための高いチームワーク力
  • 詳しくは下記をご参照ください


語学力

英語もしくは日本語:Independent (CEFR - B2)
※CEFRの詳細については、こちらをご覧ください

  • セキュリティチームはとても多様性に富んだチームで、さまざまな国籍のメンバーで構成されています。チームメンバーの日本語力・英語力はさまざまで、お互いの努力、理解、サポートを大切にしながら、母国語に関係なく誰にとっても心地よい環境構築に努めています。

関連記事

雇用条件

雇用形態

インターン


オフィス

六本木

  • 受動喫煙対策: 屋内全面禁煙
  • メルカリには「YOUR CHOICE」というワークスタイルに関する制度があります。オフィス出社をすることも、フルリモートワークを選択することも自由に選択することができます。※一部職種を除く


勤務時間

  • 週20時間以上の勤務が可能な方
  • 期間は約3ヶ月を目安としておりますが、難しい場合はご相談ください


給与

  • 時給制(時給:応相談)


ベネフィット 

  • 交通費全額支給
  • 入社時に希望のノートPC貸与
  • デュアル・ディスプレイ希望者貸与
  • ビザサポート
  • 遠方からご参加される方には宿泊地を手配



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