Sorah Fukumori
Software Engineer
Also known as: sora_h, soraher, そらは, 福森空葉
Ruby committer and a Rubyist, currently working as a SWE on Developer Experiences and corporate IT. Interested in IP network, distributed systems, identity and authentication. Sometimes powering conference with Wi-Fi, organizes a Ruby conference, and operates non-commercial BGP AS.
Lives in Tokyo, Japan.
Identifications
Professional Experiences
Cookpad Inc.
Software Engineer (Developer Experience)
April 2012 - present
- Cookpad is the largest recipe sharing website in world.
-
Developer Productivity Team
July 2020 - Present- Developer Productivity team focuses on developers platform, owns responsibility for developer experiences.
- (Site Reliability Team has been splitted to Site Reliablity team and Developer Productivity team on July 2020)
IT, Corporate Engineering Team
October 2019 - Present- Since October 2019 I'm officialy belonging to corporate engineering, IT admin team as an additional role, along with SRE. I'm helping IT with engineering around enterprise authentication and authorization platform (SAML, LDAP, Active Directory, Jamf/Intune MDm) and enterprise network.
- Also supporting IT team in our global team - employees across the globe, connecting Japanese-based IT admin team each other.
Site Reliablity Engineering Team
May 2015 - June 2020- Site Reliablity Engineering, SRE Team (formerly known as Infrastructure Team) is responsible to site reliablity and aims to automate operations as much as possible, and keep the infrastructure up to date.
- The major project I've done here is building a infrastructure for our global services from scratch. Achieved with modern AWS services and features (2014).
- In 2019, I've built a IoT infrastructure for Cookpad Mart to enable Raspberry Pi fleet used for fridges and label printers with SORACOM. (blog post)
- (Developer Productivity Team were merged into SRE team on January 2019. But splitted again on July 2020)
Development Infrastructure Team
April 2012 - April 2015- Development Infrastructure Team aims to improve developer experience (DX).
Building and maintaining internal tools, in-house platform, and dealing with technical debts...
- Starting 2015, we're migrating one big monolithic web application to microservices like architecture, many small applications.
- I developed Mamiya, Envchain at this team.
Works
sponsor-app
November 2018- A web application for conference sponsorships coordination and arrangement. Used at RubyKaigi; sponsorships.rubykaigi.org
himeko
September 2018- A web application provides AWS IAM access key self service and federated login to AWS management console, based on IAM users.
clarion
December 2017- Web-based FIDO U2F helper for CLI operations (e.g. SSH logging in)
hocho
December 2016- Wrapper for Itamae to make it easily use with a lot of servers by inventory.
codily
June 2016- A tool to codificate a configuration of Fastly CDN in Ruby DSL.
acmesmith
February 2016- A simple, effective ACME client to use with many servers and a cloud.
- ACME Protocol is used at Let's encrypt for automating SSL certificate issuing. Acmesmith is the simplest client that works with several cloud providers for securing keys.
nginx_omniauth_adapter
September 2015- A Rack app to use Omniauth with nginx.
- nginx で omniauth を利用してアクセス制御を行う - クックパッド開発者ブログ
Mamiya
September 2014- Fast deployment tool using tarballs and serf. This is used for cookpad.com, a web application backed with 150+ app servers.
- Engineers in Cookpad can deploy within around 30 seconds for 150+ servers by this software.
- Scalable Deployments - How we deploy Rails app to 150+ hosts in a minute // Speaker Deck
Envchain
June 2014- Secure credentials in environment variable; set them from OS X's keychain.
- OS X キーチェーンから環境変数をセットするツールを作りました - クックパッド開発者ブログ
days
January 2013- Simple blog system built up with Sinatra, written in Ruby.
See more at my GitHub and my rubygems.org profile.
Talks
- Fastly in Cookpad, Fastly Yamagoya 2017 in Tokyo, on October 2017
- Keynote, Oedo RubyKaigi 06 in Tokyo at March 20th 2017
- Building infrastructure for our global service, Cookpad TechConf 2017 in Tokyo, at January 21st 2017
- acmesmith: An effective ACME client, http2study #8 in Tokyo, May 30th 2016
- Scalable Deployments - How we deploy Rails app to 150+ hosts in a minute, RubyConf 2014 in San Diego, on November 2014
- Scalable Deployments - How we deploy Rails app to 150+ hosts in a minute, RubyKaigi 2014 in Tokyo, on September 2014
- Parallel Testing World, RubyConf 2011 in New Orleans, on November 2011
Contributions
RubyKaigi
Conference organizer, Wi-Fi NOC
September 2017 - present
- Organizing the large conference for Ruby language in Japan. Sometimes work as a representive against conference sponsors; I'm an admin of ruby-no-kai/sponsor-app for sponsorship coordination and arrangements.
- Also powering the conference up with Wi-Fi by participating as a NOC team lead.
- https://github.com/sorah/cnw
- Blog post on 2017 (Japanese)
Ruby
Committer (developer)
February 2011 - present
- Contribute as a committer of Ruby programming language.
- Also participate as a member of official web site editorial team.
IOI 2018 (30th Int'l Olympiad in Informatics)
Tech lead, Host Technical Committee
July 2017 - September 2018
- IOI is the large, annual international competitive programming contest for secondary school students.
- IOI 2018 was held in Japan. As a tech lead in host country technical committee, I managed the team, and an entire infrastructure for the competition.
- The infrastructure was built on AWS and on-premises.
- https://stats.ioinformatics.org/olympiads/2018
- https://github.com/jcioi/ioi-htc
ISUCON4
Organizer and problem writer
August 2014 - November 2014
- ISUCON is the famous performance tuning contest of Web applications in Japan. At 2014, ISUCON4 held and I, @mirakui, and @rosylilly were participated as organizer and problem writer.
- 4: ISUCON4 Postmortem - Admins Bar
Sinsai.info
Developer
March 2011 - December 2011
- Sinsai.info provided informations for victims of 3.11 Japan disaster.
- I re-built Twitter crawler to improve performance, and added location based search using GPS for mobile devices.
And more
- See more at my GitHub.
Skills, Expertises
- Programming Languages: Ruby, JavaScript, TypeScript and Go
- Cloud Platforms: Amazon Web Services (EC2, VPC, ECS).
- Provisioning: Terraform, Puppet, Itamae
- Systems: Debian, Ubuntu, CentOS, Arch Linux and Gentoo
- Security: X.509 fundamentals, SAML, LDAP, Intune/Jamf MDM, Active Directory, Azure Active Directory
- IP Network: Cisco IOS, Juniper Junos, Ubiquiti Edgerouter; BIRd, strongSwan, iproute2; IP routing, IPv6, eBGP, OSPF ...
- Web frameworks: Ruby on Rails and Sinatra
- Frontend frameworks: React
- Databases: MySQL, Redis
- Markup Languages: Haml, Sass and HTML + CSS
Certifications
- AWS Certified Solutions Architect - Associate (Nov 2018-2021)
Honors, Awards and Prizes
ISUCON9: 1st place
September 2019 - November 2019- ISUCON is a famous performance tuning contest of Web applications in Japan.
- At ISUCON9 in 2019, our team 白金動物園 took 1st place at the final round.
- http://isucon.net/archives/53877800.html
AWS GameDay at re:Invent 2019: 1st place (Afternoon)
December 2019- "AWS GameDay is an interactive team-based learning exercise designed to give players a chance to put their AWS skills to the test in a real-world, gamified, risk-free environment."
- https://twitter.com/AWSreInvent/status/1202050428248248320
ISUCON5: 2nd place
September 2015 - November 2015- ISUCON is famous performance tuning contest of Web applications in Japan.
- At ISUCON5 in 2015, our team 白金動物園 took 2nd place at the final round.
- http://diary.sorah.jp/2015/11/02/isucon5f
第 7 回 日本OSS奨励賞 (Japan OSS Contributors Award)
March 2012Affilications
Kyoto university Microcomputer Club (KMC)
Member, Sysadmin
August 2014 - present
- Participating for a project running AS (autonomous system) + eBGP in KMC network. (AS59128)
- https://www.kmc.gr.jp/projects/as/
Education
Utsunomiya-shi Yohoku Junior High School '12
April 2009 - March 2012- 宇都宮市立陽北中学校
Appearances
WEB+DB PRESS Vol.69
An Interview
June 2012
- @ttmtmy interviewed me at WEB+DB PRESS Vol.69 "シューカツ女子ともよの会社訪問記 知りたい！あの人のはたらきかた"
Atmarkit
An Interview
April 2011
- Ruby開発の新メンバーは14歳の中学生！ (Japanese)