Ark's page

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Mathematics / Computer Science / Programming

Profile

Hi there 👋

  • Name:Takeshi Kaneko
  • HN:Ark / アーク

Currently working as a data platform engineer and a security engineer in Japan.

Accounts

  • GitHub:arkark
  • Twitter:@arkark_
  • LinkedIn:link
  • Wantedly:link

Interests

  • Algorithms / Data Structures
  • Distributed Systems
  • Web Security / Web Exploitation
  • Creative Coding / Generative Design
  • Algebra for Computer Science

Activities

  • SECCON CTF 2021author writeup
  • 第4回ゲーム制作者交流イベントGAME3
  • 第3回ゲーム制作者交流イベントGAME3

Contests

Capture The Flag

Team: ./Vespiary

  • 2022

    • WeCTF 2022: 2nd 🥈 (Team: hogehogeErs)
    • CrewCTF 2022: 5th
    • zer0pts CTF 2022: 6th
  • 2021

    • N1CTF 2021: 7th
    • BSides Ahmedabad CTF 2021: 1st 🥇
    • TSG CTF 2021: 3rd 🥉
    • DownUnderCTF 2021: 2nd 🥈
    • ALLES! CTF 2021: 7th
    • CakeCTF 2021: 2nd 🥈
    • BSides Noida CTF: 4th
    • Circle City Con CTF 2021: 2nd 🥈
    • LINE CTF 2021: 8th
    • Union CTF 2021: 5th
  • 2020

    • SECCON 2020 Online CTF: 7th
    • InterKosenCTF 2020: 3rd 🥉
    • TSG CTF 2020: 7th
  • 2019

    • SECCON 2019 CTF: domestic final

Web Tuning Contests

Team: shallowverse

  • ISUCON 11: qual 1st🥇 / final 6th
  • ISUCON 10: qual 2nd🥈 / final 9th

Competitive Programming

AtCoder: 1900+ (highest: 2028)

Project Euler: Level 6 / Solved 170+

  • 第一回日本最強プログラマー学生選手権: final
  • Battle Conference U30 #2019 PROGRAMMING BATTLE: final 3rd 🥉
  • DISCO presents ディスカバリーチャンネル コードコンテスト2019: final
  • CODE FESTIVAL 2018: THANKS final
  • 第4回 ドワンゴからの挑戦状: final
  • CODE FESTIVAL 2017: THANKS final
  • CODE FESTIVAL 2016: final

Heuristic Contests

  • ハル研究所 プログラミングコンテスト2020: 9th
  • ハル研究所 プログラミングコンテスト2019: 9th
  • ハル研究所 プログラミングコンテスト2018: 23rd
  • 第2回 RCO日本橋ハーフマラソン: final
  • ハル研究所 プログラミングコンテスト2017: 7th

Education

  • Master of Science, Dept. of Mathematical and Computing Science, Graduate School of Computing, Tokyo Institute of TechnologyApr. 2019 - Mar. 2021
  • Bachelor of Science, Dept. of Information Science, School of Science, Tokyo Institute of TechnologyApr. 2015 - Mar. 2019

Work Experience

Working

  • Yahoo Japan CorporationData Platform Engineer (Apr. 2021 - present)
  • Ricerca Security, Inc.Security Engineer (Oct. 2021 - present)

Student Part-Time Jobs

  • MC Digital, Inc.Software Engineer (Apr. 2020 - Oct. 2020)
  • Toyokumo, Inc.Software Engineer (Aug. 2018 - Sep. 2019)
  • OCTEC Inc.Software Engineer (Nov. 2017 - Jul. 2018)

Short Internships

  • 2019

    • VOYAGE GROUP, Inc.Sunrise 大規模サービス構築プログラム (3 days)
    • Wantedly, Inc.Wantedly Summer Intern, Infrastructure (3 weeks)
    • mixi, Inc.2Days Challenge (2 days)
    • Cookpad Inc.Cookpad Summer Internship 2019 10 Day Tech (2 weeks)
    • GREE, Inc.GREE Camp (2 days)
    • Cookpad Inc.Cookpad Spring 1day Internship 2019 コンテナコース (1 day)
  • 2017

    • HAL Laboratory, Inc.INTERNSHIP 2017 PROGRAMMER COURSE (1 day)
    • COLOPL, Inc.MASH UP エンターテインメントを追求する合宿型インターンシップ (3 days)
    • mixi, Inc.第6回 git challenge (1 day)
    • DeNA Co., Ltd.SUMMER INTERNSHIP ゲームエンジニアリングコース (3 days)

Publication

Journal Papers

  • Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo, Kota Abe, Yuuichi Teranishi: “Detouring Skip Graph: Efficient Routing via Detour Routes on Skip Graph Topology,” IEEE Open Journal of the Communications Society (OJ-COMS), Vol.1, pp. 1658-1673, October 2020.

International Conferences

  • Takeshi Kaneko, Kazuyuki Shudo: “Broadcast with Tree Selection on An Overlay Network,” Proc. 36th International Conference on Information Networking (ICOIN), January 2022.
  • Yuya Miki, Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo: “An Efficient Range Search Method Utilizing Detour Routes in Skip Graph,” Proc. 19th IEEE Consumer Communications & Networking Conference (CCNC), January 2022.
  • Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo, Yusuke Aoki, Kota Abe, Yuuichi Teranishi: “Detouring Skip Graph: A Structured Overlay Utilizing Detour Routes,” Proc. 17th IEEE Consumer Communications & Networking Conference (CCNC), January 2020.
  • Yusuke Aoki, Kai Otsuki, Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo: “SimBlock: A Blockchain Network Simulator,” Proc. 2nd Workshop on Cryptocurrencies and Blockchains for Distributed Systems (CryBlock, in conjunction with IEEE INFOCOM 2019), April 2019.

Articles

  • 線形空間𝔽₂^V上の問題に対する連結グラフから全域木への帰着2020/02/18
  • 半環上の最大部分配列問題とKadane's algorithm2019/12/09
  • bitによる部分集合の列挙 と 数学的理解2018/03/07
  • Kadane's Algorithm | 最大部分配列 問題2018/01/08
  • gcd/lcmとmin/maxが同型という話2017/11/05
  • 最小有向全域木を求める | Chu-Liu/Edmonds' algorithm2017/09/15

Works