Tokyo Cloudflare
About Us

At Cloudflare, we are on a mission to help build a better Internet.

Today the company runs one of the world's largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies.

Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request.

As a result, they see significant improvement in performance and a decrease in spam and other attacks.

Cloudflare was named to Entrepreneur Magazine's Top Company Cultures list and ranked among the World's Most Innovative Companies by Fast Company.

We realize people do not fit into neat boxes.

We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that.

We cannot complete our mission without building a diverse and inclusive team.

We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare.

Come join us

Available Locations:
Singapore, Sydney (Australia), or Tokyo (Japan)

About The Team

The Cloudflare Customer Support Team solves complicated problems and answers technical questions via phone, email, chat and social media.

Whether it is a Wordpress blogger using our services for free or a global Enterprise business with petabytes of web traffic, we are always eager to assist.

We are the eyes and ears of Cloudflare, acting as the real-time voice of the customer to help communicate their needs and real-world use cases back to the rest of the company - for better service and future product development.

What You'll Do


Do you love solving complex technical issues and interacting with people? Are you passionate about providing premium-level support to customers and are a standout colleague? Cloudflare is seeking an experienced Network Security Engineer to join our team and support our largest and most technically sophisticated customers in resolving technical problems, threats or attacks on their infrastructure at OSI Layers 3, 4, and 7.

This will span the range of Cloudflare products from Magic Transit Infrastructure Protection, Argo Smart Routing, DDoS mitigation and Network Firewall, to using the Web Application firewall (WAF), Spectrum and Rate Limiting to help customers.


Serve as a trusted technical advisor for our enterprise customers, responding to and resolving inquiries and incidents related to network security and performance, while delivering timely, high-quality and personalized assistance.

Work directly with customers to diagnose, troubleshoot and resolve complex technical issues involving DDoS mitigation, firewall rules, SSL/TLS, network confirmation, and other security configurations.

Create and maintain knowledge base articles, technical guides, and troubleshooting documentation for internal and customer use.
Compare traffic signatures and attributes including IP addresses, cookie variations, HTTP headers, and JavaScript footprints to determine what is good traffic and what is malicious
DDoS mitigation for OSI layers 3,4, & 7: advise customers on how to filter malicious traffic using Cloudflare tools like Magic Transit, Network Firewall, WAF, IP reputation lists, packet inspection, blocklisting, allowlisting, and rate limiting
Work with Engineering and Product teams to improve products and tools

What We're Looking For


You have a minimum of 4 years experience working as a Network Security Engineer / Technical Support Engineer / Sr.

Support Engineer supporting networking or web security products.
Exceptional troubleshooting and problem-solving skills, with the ability to simplify complex concepts for customers.

Strong customer service orientation and communication skills, both written and verbal, fluent in English and preferably a second language like Mandarin, Hindi, Tamil, Korean or Japanese.

Ability to work independently and collaboratively in a fast-paced, dynamic environment.

Strong understanding of network protocols, including TCP/IP, DNS, HTTP/S, and BGP, with a particular focus on anycast routing concepts and implementation, as well as tools such as iptables and looking glass.

Proven experience troubleshooting network connectivity issues, BGP routing, and GRE tunnels, and performing packet capture analysis
Confident with command line and tools, including curl, dig, traceroute, openssl, git
Experience in a web development and / or hosting environment such as installing and configuring web servers like Apache, Nginx, Caddy and IIS
You are competent writing scripts in Bash, Python, JavaScript or other scripting language
You have worked with PostgreSQL, MySQL, MS SQL, and other database servers
Bachelor's degree in Computer Science, Cybersecurity, or a related field (or equivalent experience).
Relevant certifications such as CISSP, GCIA GCIH, GCFA, GCFE or equivalent.

What Makes Cloudflare Special?

We're not just a highly ambitious, large-scale technology company. We're a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo:

Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare's enterprise customersat no cost.


Athenian Project:

In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration.

Since the project, we've provided services to more than 425 local government election websites in 33 states.

1.1.1.

1:

We released to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver.

This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here's the deal - we don't store client IP addresses never, ever.

We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you'd like to be a part of? We'd love to hear from you

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations.

Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S.

export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer.

We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness.

All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law.

We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job.

Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment.

If you require a reasonable accommodation to apply for a job, please contact us via e-mail at or via mail at 101 Townsend St.

San Francisco, CA
Show more Show less

  • Tokyo JERA Co., Inc. ¥10,000,000 - ¥15,000,000 per year

    国内最大の発電会社であり、世界最大級のエネルギー会社がこの数年間で一気にグローバルカンパニーとしての最先端のICT/デジタル基盤を企画推進する為に、エネルギー業界の変革を起こす為の圧倒的な規模感の中でキャリア成長を求められる方を募集しております。 · M365ツールの利用経験 · 中長期のゴールを見据え、最低限の指示で自律的に業務遂行するマインド · 社内外、部内外と円滑に調整可能なコミュニケーションスキル · ネイティブレベルの日本語力 · ICT戦略に基づいた国内外ネットワークの戦略・施策の立案・リード · グローバルでのネットワークガバナンス・ルー ...

  • Security Engineer

    2ヶ月前


    Tokyo パーソルキャリア株式会社 BRS

    グローバルに展開する医薬品メーカーで、セキュリティエンジニアを募集しています。DX推進にあたり、セキュリティ体制を強化することが求められます。 · セキュリティアーキテクチャの設計・管理 · セキュリティソリューションの企画立案 · プロジェクトマネジメント、予算管理、社内調整、ベンダーコントロール等 · セキュリティソリューション導入後の運用 · セキュリティ対策についてのリスク評価、助言 · セキュリティ業務へのAI活用の推進 · セキュリティインシデント対応 · ...

  • Security Engineer

    1ヶ月前


    Minato SB Intuitions ¥6,500,000 - ¥18,000,000

    生成AIを生み出し、使う人類は、多様性に満ちた存在。世界には、さまざまな言語、歴史、文化、慣習、制度を持つ国や地域があります。 · セキュリティポリシー・ガバナンス体制の策定、社内展開、定期的なレビューと改善 · 情報セキュリティ/リスク管理体制の構築・運用 · ISO27001の基準をベースにしたリスクアセスメント・監査対応 · セキュリティ関連プロセスの設計・改善・文書化 · 社内教育・啓発活動の企画および実施 · インシデントレスポンス体制の構築・運用 · SaaS製品導入時のリスク評価、セキュリティレビュー · セキュリティ関連の業務経験(3年以 ...


  • Tokyo TEKsystems ¥5,300,000 - ¥8,300,000 per year

    ほぼフルリモートのポジション · 英語と日本語を使えるバイリンガルでグローバルな環境 · 新しいチームで多様なキャリアパスの機会 · ...


  • Koto Renesas Electronics Full time¥4,000,000 - ¥10,000,000 per year

    ITの運用をグローバル化していく中で、ネットワークについてもエンタープライズ規模の環境をグローバル体制で社内での構築・運用に移行しています。グローバルネットワークオペレーションチームの一員として、日本およびアジア地域で活躍出来る人材が必要となっています。 · 世界20ケ国、従業員2万人、100拠点規模の社内グローバルネットワークの設計、構築、運用 · チームの一員として、日本及びアジア全体のLAN・WAN・無線LANなど社内ネットワーク環境のすべての側面を管理・サポート · グローバルチームと連携し、ネットワークの設計、ハンズオンでの実装 · 会社統合に ...


  • Tokyo First Point Group ¥1,800,000 - ¥2,500,000 per year

    We are looking for a Senior Network Security Engineer with deep expertise in Fortinet technologies and modern network security architectures. · Lead the deployment of Fortinet SD-WAN and SASE solutions across enterprise environments. · Design and execute cutover strategies from M ...


  • Tokyo Cloudflare ¥80,000 - ¥180,000 per year

    At Cloudflare we are on a mission to help build a better Internet today the company runs one of the world's largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune companies · ...


  • Tokyo パーソルキャリア株式会社 BRS ¥4,000,000 - ¥8,000,000 per year

    日本を起点にグローバルネットワークをリード/柔軟な働き方が可能 · 東京 IT ネットワークエンジニア · 地域のネットワーク(LAN/WAN/Wi-Fi/音声/SD-WAN/クラウド接続)の設計・導入・運用、保守 · 製造現場(PLC含む)を含めた高度なネットワークインフラの健全性・セキュリティ・パフォーマンス維持 · グローバル標準・ベストプラクティスの地域展開 · SLA/KPI管理、ネットワーク機器(ファイアウォール、スイッチ、ルーター等)のパフォーマンス最適化と定期保守 · 重大インシデント対応、原因分析、ベンダー管理 · ITセキュリティ基準 ...


  • Tokyo, Tokyo Renesas Electronics ¥4,000,000 - ¥10,000,000 per year

    ITの運用をグローバル化していく中で、ネットワークについてもエンタープライズ規模の環境をグローバル体制で社内での構築・運用に移行しています。グローバルネットワークオペレーションチームの一員として、日本およびアジア地域で活躍出来る人材が必要となっています。 · 世界20ケ国、従業員2万人、100拠点規模の社内グローバルネットワークの設計、構築、運用 · チームの一員として、日本及びアジア全体のLAN・WAN・無線LANなど社内ネットワーク環境のすべての側面を管理・サポート · グローバルチームと連携し、ネットワークの設計、ハンズオンでの実装 · 会社統合に ...


  • Tokyo Michael Page ¥3,000,000 - ¥6,000,000 per year

    大規模ネットワークに携われるチャンス · グローバルかつ多様なチームとの協働し、英語も活かしていただけます · ネットワーク設計・構築・運用の実務経験(5年以上目安) · Cisco / Juniper などマルチベンダー環境での業務経験 · ネットワーク障害対応・トラブルシューティングの実務経験 · 関係者との円滑なコミュニケーションスキル · ビジネスレベルの日本語・英語 · ネットワークインフラの設計、構築、運用、最適化 · ネットワークパフォーマンスの監視と改善提案 · トラブルシューティングおよび原因分析 · プロジェクト進行・ベンダー調整・技 ...


  • Tokyo First Point Group ¥5,500,000 - ¥10,000,000 per year

    We are looking for a Senior Network Security Engineer with deep expertise in Fortinet technologies and modern network security architectures. · Lead the deployment of Fortinet SD-WAN and SASE solutions across enterprise environments. · Design and execute cutover strategies from M ...


  • Tokyo スキルハウス・スタッフィング・ソリューションズ株式会社 ¥5,000,000 - ¥10,000,000 per year

    ネットワークエンジニアを、幅広く募集しています · ITインフラ分野での経験 · ネットワーク運用、ネットワークセキュリティ、ストレージネットワーク設計など · JLPT2以上、または同等のレベル · 細部にまで注意を払い、正確さと高い品質を確保できる · 新しい技術の習得に高い意欲がある · ネットワーク運用 · ネットワークセキュリティ · ストレージネットワーク設計 · 年間報酬 5,000,000円~10,000,000円 · ...

  • Network Engineer

    13時間前


    Tokyo Tech People 247 ¥4,800,000 - ¥7,200,000 per year

    We are seeking a Network Engineer to monitor networks, ensure security standards, and troubleshoot problems. · Bachelor's Degree in Computer Science or IT related field or Networking is preferred. · ...

  • Network Engineer

    1ヶ月前


    Tokyo A10 Networks, Inc ¥4,000,000 - ¥8,000,000 per year

    As a Network Engineer, you will work with the existing team to ensure adequate coverage of 24x7x365 operations in Japan Technical Assistance Center. · Identify and troubleshoot advanced L4–L7 traffic issues involving SSL, HTTP, and other application layer protocols · Analyze and ...

  • Network Engineer

    2ヶ月前


    Tokyo Ahead Group ¥400,000 - ¥1,200,000 per year

    Ahead Group is seeking a highly skilled Network Engineer to join a fast-paced, dynamic team supporting the electronic trading network infrastructure of an international investment bank. · Ensure the reliability, stability, and optimal performance of the electronic trading network ...


  • Tokyo TEKsystems ¥500,000 - ¥2,000,000 per year

    We are seeking a Network Engineer responsible for the design, construction, and operation of global networks. The position involves designing, constructing, and operating WAN/LAN networks, planning and implementing global infrastructure supporting over 150 sites and 40,000 users. ...

  • Network Engineer

    3週間前


    Tokyo Global Tech Company ¥6,000,000 - ¥12,000,000 per year

    As a network specialist, you will mainly engage in product selection, design, development, and operation of a wide variety of network. · Design and development of new network for new services · Improve existing network for current services · Research new technology of network and ...

  • Network Engineer

    2週間前


    Tokyo Smart IMS Inc. ¥3,500,000 - ¥7,000,000 per year

    The ideal candidate will be responsible for maintaining and intermittently improving our current network configuration and infrastructure. · Design our revamped network infrastructure with the goal of maximizing our network performance. · Provide troubleshooting and configuration ...

  • Network Engineer

    3週間前


    Tokyo JP Tokyo & Co. Inc. ¥5,500,000 - ¥8,500,000

    We are looking for a Network / Infrastructure Engineer candidate to join our team in Japan. · グローバルなドメインインフラとDNS設定を管理する · 認証システム(Active Directory)のサポートと維持管理 · 複数リージョンにわたる名前解決とドメインの整合性を維持する · グローバルネットワークインフラ(LAN/WAN, VPN)に対するレベル2サポートを提供する · VPN & セキュア接続 · アクセス制御 & 認証 · VPNの設定、維持、最 ...


  • Tokyo Zscaler ¥4,000,000 - ¥8,000,000 per year

    We're looking for an experienced Senior Network Engineer to join our Global Cloud Ops team. Reporting to the Sr. Director, Network Engineering, you'll be responsible for representing Japan and covering customers within the region as a part of our global network engineering team. ...

  • Sr Network Engineer

    1ヶ月前


    Tokyo A10 Networks, Inc ¥8,000,000 - ¥15,000,000 per year

    As a Sr Network Engineer, you will work with the existing team to ensure adequate coverage of 24x7x365 operations in Japan Technical Assistance Center. · ...