Sponsors

Money Forward is a SaaS/fintech company, providing PFM (personal financial management) service “Money Forward ME” and back office SaaS “Money Forward Cloud”.
Since the company's establishment in 2012, our aim has been to solve financial issues of all individuals and businesses through building an open and fair financial platform, thriving to be a player that brings innovative ideas and practices to all users.

CrowdWorks provides a freelancing website to people who want to work thorough the internet. We have been developing our service with Ruby on Rails since 2011. We continue to challenge providing works which suit one's lifestyle so that accomplishing our mission "Talent infrastructure".

ANDPAD is the No. 1 cloud-based construction project management service in Japan, enabling centralized management from site efficiency to management improvement.There are more than 130,000 companies using the service, thanks to our intuitive, easy-to-use development and our thorough support for installation and operation.Our service is used by more than 330,000 people in the construction and building industry.We are rising to the challenge of changing society with technology, to bring digital transformation to the construction industry.

M3 operates a multitude of global services centered around its physician platform. Our mission is "Making use of the Internet to increase, as much as possible, the number of people who can live longer and healthier lives, and to reduce, as much as possible, the amount of unnecessary medical costs."

Fastly is upgrading the internet experience to give people and organizations more control, faster content, and more dynamic applications. By combining the world’s fastest global edge cloud network with powerful software, Fastly helps customers develop, deliver, and secure modern distributed applications and compelling digital experiences. Fastly’s customers include many of the world’s most prominent companies, including Pinterest, The New York Times, and GitHub. For more information on our mission and products, visit https://www.fastly.com.

We seek to provide "Opportunities for Life" much faster, surprisingly simpler and closer than ever before.
Since our foundation, we have connected individuals and businesses offering both a multitude of choices.
In this era of search, where information has become available anytime anywhere, we need to focus more on providing the optimal choice.

DeNA (pronounced "D-N-A") aims to entertain and to serve through our businesses, under our mission to delight people beyond their wildest dreams. DeNA's major business areas are in mobile games, sports, live streaming, healthcare, and automotive.

"We create Healthtech Platforms. "
MedPeer Group is a company founded by a active physician. Our core business is MedPeer, a community platform for physicians, in which over 40% of Japan's physicians participate, and we provide services that support the value chain of healthcare.

ESM is one of Japan's premier companies building Ruby/Rails applications in an agile way. We believe in Ruby and Agile because we believe in people. We build applications which work well and make customers happy.

ZOZO, Inc. owns and operates ZOZOTOWN, Japan’s largest fashion e-commerce. Housed within ZOZOTOWN are category specialized malls such as ZOZOCOSME and ZOZOSHOES; ZOZOUSED, a second-hand clothing fashion mall; ZOZOVILLA, a section dedicated to luxury & designer brands; YOUR BRAND PROJECT; a D2C business that provides consumers an opportunity to share their sense of style and fashion by creating their own personal fashion brand; WEAR, a SNS for sharing stylings and outfits, and more - various services for fashion lovers. ZOZO has also developed technology devices for body measurement, such as the ZOZOSUIT, ZOZOMAT, and ZOZOGLASS.

Wantedly is a Tokyo-based technology company. From passion-based recruitment to employee engagement, our products aim to Create a World where Work Drives Passion.

"DIGGLE" is a business management SaaS platform that optimizes the business management flow and centralizes management information to promote operational efficiency and collaboration among organizations, and supports rapid and high-quality decision-making. "DIGGLE" enables the entire business management process, including budgeting, actual vs. budget variance analysis, forecasting, and reporting, to be performed in one integrated environment, thereby enabling the early identification of factors that cause gaps between forecasts and actuals, the early implementation of actions, and the improvement of the accuracy of business forecasting.

“coconala” is a skill market for selling and buying knowledge, skills, and experience.
Coconala is a skills matching platform that aims to create a system that allows everyone to pursue their passion.
Buy and sell various services, from “production categories” such as design, website creation, video and music creation and writing, to “business support categories” such as business marketing, as well as “consultation categories” such as career counseling and fashion advices, all for business or in private and in any context. Use “coconala” to exhibit and purchase services, request and provide work proposals, and fulfill a wide range of needs.

Both Being Co., Ltd (hereafter "Being") and Luxiar Co., Ltd (hereafter "Luxiar") belong to "Being Group".
"Being" is a software service vendor founded in 1984 and has been developing and selling many BtoB software services, including the software with the largest market share in Japanese construction industry.
"Luxiar" (https://www.luxiar.com) has been developing systems specializing in Ruby on Rails since 2007 and has many achievements.
"Being" and "Luxiar" as a "Being Group" develop and operate a web application so called "INSHARE" for the construction industry using Ruby on Rails jointly.

“giftee” is a service that enables one to send an eGift via email or LINE, etc, along with the wishes of thank you, congratulation, good job, in a casual manner. A wide range of casual gifts are available for your selection, redeemable at the respective stores nationwide.

Findy helps engineering organizations and individuals improve their development experiences. Founded in 2016 and based in Tokyo, the Engineering Intelligence products, Findy, Findy Freelance, Findy Global, and Findy Team+ are trusted by over 120,000 software engineers users and over 1,000 companies from start-ups to enterprises.

Speee's mission is "Unravel everything. Bring the future to us".

Based on our mission, we solve various issues in the society with technology. We develop our businesses widely in areas of Marketing Intelligence, Digital Transformation and new businesses such as blockchain related areas, etc.

While we have been developing our businesses by combining data and technology, we also have been actively supporting Ruby's development. We further contribute to activating Open-Source Development with support of Kohei Suto from Clear Code, Inc.

Speee will continue to realize our mission by chain of thriving technology and developing businesses.

TenshokuDRAFT is recruitment service. Companies put out the job offer with annual income based on their skills and experiences to IT engineers, just like the professional baseball draft.

note is a media platform where creators can freely post and sell various contents such as texts, images, audio and video, and readers can enjoy the contents ,support creators and make purchases.

Nexway provides the services to solve various industrial issues, based on the business to support the communication traffic infrastructure.
In order to meet with the diverse industry needs, we offer wide range of SaaS/CPaaS services.
We have been utilizing Ruby since 2012, and now working on the Scrum development.
We are looking for a colleague with enthusiasm to develop a better service with us.

Qiita is a technical knowledge sharing and collaboration platform for engineers. Qiita is a place where users can connect with other engineers through the articles.

"Greatly Satisfy IT Engineers."
Qiita, Inc. hopes to accelerate changes in society and the evolution of the world through the development of software, and we contribute to the improvement of the development efficiency of the engineers who support it.

Qiita has been developed using Ruby on Rails since first launch. We are convinced that the power of Ruby on Rails and the flexibility of Ruby has contributed to Qiita's growth.

Flatt Security is a startup that provides security services and products for developers. Their mission is to deliver next-generation security for developers and accelerate product development around the world.

What supports our modern society is software consisting of tens of thousands of lines of source code, which is running on an infrastructure consisting of a vast number of devices, and developers who are anxiously supporting the software, which is becoming more and more complex year by year.

We want to create a creative society where these developers can continue to move forward without any security concerns.

Shippio, Inc. has been promoting DX (Digital Transformation) as Japan's first digital forwarder (*1) in the field of international logistics along with its mission of "implementing the ideal logistics experience in society.

To be the Compass of Logistic Innovation.

We aim to transform the Global Logistics Industry where no innovation has been done in the past 50 years.
We strive to accelerate digitalization in the Global Logistics Industry to make logistics around the world easier to access and more transparent.

*1 "Digital forwarder" is a registered trademark of Shippio Co.

Vonage has everything you need to build connected applications with our APIs for SMS, Voice, Video, Verify and more. Whether you want to make and receive phone calls with code, reach users by the messaging platforms they prefer or ensure that users provide the correct contact details, we’ve got you covered. You can also easily integrate with social chat apps such as Facebook Messenger, WhatsApp and Viber, or build in-app voice and messaging experience on mobile and web. We also support open-source libraries for Ruby that enable you to build scalable communications features such as two-factor authentication, notifications, group messaging and calls.

SmartHR is the number one rated HR cloud based software optimized for labor management. Our software not only focuses on employee management and administration, but also growth and productivity. Customers can accelerate digital transformation of HR manual processes including year-end-tax adjustments, employment contracts, new employee registrations, issuing payslips, employee data management, and more. Furthermore, providing talent management functionalities contributes to improve employee productivity and engagement. For this reason, SmartHR is among the leading progressive cloud-based HR solutions enhancing the growth of companies in Japan.
As a big fan of the Ruby language, we're excited to be a sponsor of this Kaigi.

Keiken System is an independent software developer in Nagano. We have been working on software development and various services that meet the needs of the times.
We have built a deep trusting relationship with many users and developed the history of computer spread in Our Homeland.

We focused on Ruby early on and was certified "Ruby System Integrator Gold" in 2012 as the first software company in Nagano pref.
With the knowledge we have cultivated so far, we have achieved good results for customers nationwide.
We will continue to challenge evolving IT technology.

We are Ruby specialists developing mainly BtoB products, ‘Lychee Redmine,’ plug-ins for OSS Redmine and ‘KIWI GO,’ the employee wellness app, in a stress-free and flexible environment.
【We Are Hiring Rubyists!】
✔Four-day workweek every other week / 150 days off annually plus paid time off.
✔You can focus on programming - we will not force unnecessary tasks on you.
✔Work whenever and wherever you want with outstanding benefits.
(Remote work, flextime, various benefits including electricity and meal allowances)
✔Free choice of editor, library and framework.
✔Boss-free, non-hierarchical structure. We have a culture of openness and trust.

Helpfeel Inc. was founded in Silicon Valley in 2007. In 2019 released Helpfeel, an enterprise search SaaS that provides FAQ search and knowledge discovery for end users and internal teams. In March 2021, raised 500 million yen to expand Helpfeel. Nota has offices in Kyoto and Tokyo while also offering full remote work and flexible hours.

We believe entertainment can move people’s hearts.
It expands the world you see and deepens connections between family, friends, and those you have yet to meet.
Entertainment creates experiences that are unforgettable in life.

By being true to our creative and expressive selves and by resonating with artists and creators from around the world,
Akatsuki Games aims to continue to deliver entertainment that moves people’s hearts.

Supporting creators around the world, pixiv Inc. provides various services which are visited by more than 80 million creators and their fans.

Powered by GPS on smartphones and meticulously created hiking maps, YAMAP app enables hikers to locate themselves in mountains with no mobile signals.
By transforming smartphone into a GPS-powered hiking device, YAMAP app has made a huge contribution to the hiking culture in Japan. There are numerous cased where YAMAP app prevented hikers from getting lost while hiking, the most common accident, and even some users were rescued from fatal accidents.