Sponsors

Saeloun is a Ruby on Rails Consulting & Development Company based in San Francisco, Boston and Pune, India.

We are a team of developers who specialize in Ruby on Rails, ReactJS and React Native. We work with small and large teams, helping them get to their milestones

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. Money Forward was listed on Tokyo Stock Exchange, Mothers in September 2017, and changed to the First Section in June 2021.
The company transitioned to the Prime Market under the new market segmentation of Tokyo Stock Exchange, Inc. from April 2022.

“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.

"Better Systems, Better World"
Since our foundation, it has been RakSul's belief that technology can bring significant structural changes to many legacy industries.
The vast majority of these industries haven't been empowered by modern software engineering.
At RAKSUL, we pride ourselves on our spirit of innovation.
To demonstrate this, we have created digital platforms for multiple industries: Web-to-print Platform (Raksul), Logistics platform (Hacobell), Advertisement Platform (Novasell) and Corporate IT Platform (JOSYS).
Ruby has been a central technology to make this vision come true. We support the Ruby community as it continues to be a key driver in realizing our mission.

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.

We are Ruby specialists developing mainly BtoB products, ‘Lychee Redmine’ plug-ins for OSS Redmine, ‘KIWI GO’ the employee wellness app, and ‘GIJI’ the meeting minutes software.
【We Are Hiring Rubyists!】
✔You can focus on programming, no need to do things you don’t want to.
✔Work whenever and wherever you want with outstanding benefits.
(Remote work, full-flex, various benefits including electricity and meal allowance)
✔Free choice of editor,library and framework.
✔Boss-free, a flat organizational structure. We have a culture of openness and trust.

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

We provide "STORES" products, enabling merchant DX with various solutions; E-commerce, Point-of-Sales, Payments, Bookings, and CRM app. 3 products are built with Ruby. We contribute to the growth of Ruby by supporting RubyKaigi which makes huge positive influence on the Ruby Programming and the Ruby Community.

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.

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 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 aims to continue to deliver entertainment that moves people’s hearts.

"mybest" is a service that helps create the best possible selection experience.
We help to match users with goods and services, striving to improve the process of making choices in order to enrich people's lives.
In further pursuit of optimizing users' selection process, we aim to extend our service beyond helping users choose tangible goods and services by assisting users in making various selections that they encounter in their lives, such as experiences and travel destinations.

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.

Paytner, Inc. has the mission "Encourage small businesses to take on new challenges with easy payments and billing”. We have designed, developed, and now offer Paytner Factoring, an online factoring service, and Paytner Invoice, a cloud-based invoice processing service. We aim for these to become one of the services that can create added value for our customers. By smoothing the flow of money and simplifying all business transactions in small business, we will contribute to creating an environment where the 15.77 million freelancers and more than 3.5 million small and medium-sized businesses can focus on their business and services.

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.

Our philosophy is "Pursue the future of consumption".
WED, Inc. is developing businesses related to consumption such as "ONE", a mobile app that enables users to sell their receipts instantly.
The app passed 4 million downloads and had 360 million receipts uploaded. It collects a huge amount of consumption data from users. We support our clients in marketing.
In 2020, we also released “Zero” with MARUI GROUP.
It is an application for shopping malls, and they can manage their tenants’ sales easily.
We will optimize consumption. The consumer market will be more efficient and more effective by it.

Timee is a matching platform for gig workers launched in 2018. Our mission is "to make the infrastructure which helps everyone to achieve promising future through working." We use Ruby for agile service development to achieve our mission.

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.

Our mission is "Making your local life smarter and more fun". Tokubai has been grown up since we started the service in 2013 and became one of the largest digital flyer and bargain information services in Japan. More than about 50000 retailers from all over Japan deliver valuable information to the customer through our platform. We support the development of the Ruby community as it continues to enable us to deliver our value to users quickly and safely.

Linkers Corporation aims to enable collaboration between businesses in all fields.

We provide a number of business matching platforms, with a focus on the manufacturing sector.

Our flagship app Linkers, along with Linkers Sourcing/Marketing, LFB, and more are built using Ruby and the tools contributed by the community.

Ruby (and Rails) has enabled us to create platforms that provide opportunities and addresses the needs of our customers.

Tabelog is the best way to find restaurants and review them in Japan.

From 2005, we have accumulated over 45 Million Reviews and data for about 820k restaurants. We help "Over 100 Million People" find their best restaurant with scores based on the reviews. Along with our Search Service, we also provide a Booking Service, Credit Card Payment Service and so on. Since 2007, we have been developing Tabelog with Ruby. We're hiring Rubyists! Help us build further splendid service.

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.

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

Findy helps engineering organizations and individuals improve their development experiences. Founded in 2016 and based in Tokyo, the Engineering Intelligence products, Findy, Findy Freelance, and Findy Teams, are trusted by over 80,000 software engineers users and over 750 companies from start-ups to enterprises.

"FLEXY" is a highly-skilled professional sharing service that offers a new way of working from 2 or 3 days a week, targeting engineers, designers, CTOs, and technical advisors.
We only introduce our client's own product projects.
Many companies are seeking highly-skilled professionals for core roles as technical advisors, tech leads, main designers, project managers, etc in high profile projects.
If you are currently a freelancer and would like to acquire more projects, or if you are considering a side job while working as a full-time employee, our coordinators will work with your needs and make the most suitable proposal for you.

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.

Shopify is a global commerce company powering millions of businesses worldwide, and we love Ruby! It's the foundational technology behind our success. Shopify is built on RoR, and with over 2.8 million lines of Ruby code, we have the oldest and largest Rails codebase in the world powering our core monolith. Our Ruby Infrastructure Team actively contributes to the platform to make Ruby fast, scalable, safe, and perform better for developers globally, most recently having YJIT merged into Ruby 3.1. We're committed to the future of Ruby as a language. Learn more about Ruby at scale with Shopify.

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.

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

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.

SMS is a global company whose mission is to create values and contribute to society by providing an "information infrastructure for an aging society." We have developed over 40 services based on infromation technology which are targeting those who are associated with aging society in Japan and Asia Oceania since our founding in 2003.