Engineering at LY Corporation

Slide 1

Slide 1 text

Slide 2

Slide 2 text

Slide 3

Slide 3 text

Slide 4

Slide 4 text

© LY Corporation Create an amazing life platform that brings WOW! to our users. From when you wake up until you fall asleep, as the foundation for your daily life, we aim to surprise, inspire and make your life better. Mission 4

Slide 5

Slide 5 text

Slide 6

Slide 6 text

© LY Corporation Life Platform 24/7, from when our users wake up until they fall asleep, we strive to support the overall life of the users. WOW and ! "WOW!” is “an unprecedented experience that you just have to share with others.” “!” represents “astonishment beyond imagination”. The Vision Behind Our Mission

Slide 7

Slide 7 text

Slide 8

Slide 8 text

Slide 9

Slide 9 text

© LY Corporation 9 About LY Corporation Z Holdings Inc., LINE Corporation, Yahoo Japan Corporation, Z Entertainment Inc., and Z Data Inc. have successfully completed the internal group reorganization as planned. As of October 1, 2023, we have begun operations under the new name 'LY Corporation.' About the LY Logo: The logo symbolizes the creation of further innovation through the unification of LINE and Yahoo! JAPAN, embodying our shared key values of 'user-friendly,' 'innovation,' and 'technology. Company Name LY Corporation Company Representative Kentaro Kawabe, Chairperson and Representative Director Takeshi Idezawa, President and Representative Director, CEO Businesses Development of online advertising business, ecommerce business, members services business, and other businesses, and managing of group companies and other operations Headquarters Kioi Tower 1-3 Kioicho, Chiyoda-ku, Tokyo 102-8282, Japan About LY Corporation Founded January 31, 1996 Business Term Ends March 31 Stock Trading Unit 100 IPO Date November 4, 1997 (JASDAQ) Common Stock 248,144 million yen (As of March 31, 2024) No. of Consolidated Subsidiaries 115 (As of March 31, 2024) No. of Equity-Method Affiliated Companies 39 (As of March 31, 2024)

Slide 10

Slide 10 text

© LY Corporation History of LY Corporation By prioritizing users and consistently striving to create new user experiences, we have led the development of Japan's internet industry 10 1996: Yahoo was established 2015: ASKUL became a consolidated subsidiary 2019: Yahoo's management functions were consolidated into Z Holdings. 2021: PayPay Became a Consolidated Subsidiary 2019: ZOZO became a consolidated subsidiary 2023:LY Corporation was established 2021: Management integration with LINE Consolidated Number of Employees Approximately 28,000 (as of the end of March 2023) Consolidated Revenue 1,814.6 billion Yen No. 1 in Japan for PC internet services (media business) Expansion of commerce and fintech businesses Promotion of smartphone sift Promotion of data utilization

Slide 11

Slide 11 text

Slide 12

Slide 12 text

Slide 13

Slide 13 text

© LY Corporation 13 Communication App LINE LINE is transforming the way people communicate, closing the distance between family, friends, and loved ones with voice and video calls and messages for free regardless of where you are. LINE seamlessly connects you with a variety of people, information, services, companies and brands.

Slide 14

Slide 14 text

Slide 15

Slide 15 text

© LY Corporation 15 Comprehensive Internet Service Yahoo! JAPAN a wide range of services are provided for various devices, including the portal site 'Yahoo! JAPAN,' along with services such as search, news, weather, shopping, auction, and more.

Slide 16

Slide 16 text

© LY Corporation One of the largest user bases in Japan We have three products, each used by more than half of Japan in their respective domains 16 MAU※ Over 95 million No. 1 in Domestic SNS Usage Tat Communication MAU※ Over 75 million No.1 in Domestic Digital Reach Internet Registered Users※ Over 58 million No.1 in Domestic Mobile Payment Service Payment

Slide 17

Slide 17 text

© LY Corporation Service Map of LY Corporation We will address and solve a variety of user challenges through our other services as well 17 MAU※ Over 95 million MAU※ Over 75 million Registered Users※ Over58 million

Slide 18

Slide 18 text

Slide 19

Slide 19 text

Slide 20

Slide 20 text

Slide 21

Slide 21 text

© LY Corporation 21 Technical Stack Languages & Frameworks Database Technologies Other OSS & Company-wide Technologies Development & Operations 全社FaaS APIGateway Athenz Batler Blitz ShellKey ZCP GitHub Enterprise Screwdriver PagerDuty ZAP Yamas Dragon EDGE Selecting the appropriate technology for each service (examples below)

Slide 22

Slide 22 text

Slide 23

Slide 23 text

© LY Corporation Diversity 23 Global Employees We pride ourselves on having a diverse environment with employees from over 41 countries, including Korea, Taiwan, Thailand, Indonesia, the USA, Peru, France, Germany, and Spain. *As of September 2024 Japanese Language Policy While it is beneficial to have a conversational level of Japanese, it is not a strict requirement. We offer a support program that includes Japanese lessons to help you improve your language skills.

Slide 24

Slide 24 text

Slide 25

Slide 25 text

© LY Corporation 25 External & Internal Tech Events We host events for engineers both externally and internally. These events help promote LY's technology, contribute to boosting engineers' motivation, and enhance their value. Additionally, internal events serve as opportunities for interaction across different departments and teams. Community Information Our connpass page

Slide 26

Slide 26 text

© LY Corporation 26 Program for Supporting Participation in International Conferences Our company actively sends employees to international conferences so that engineers can stay updated on the latest technology trends. We fully cover travel and accommodation expenses. Recently, more members have also been actively presenting their insights gained from daily development at these international conferences. Community WWDC 2024 Goodge I/O 2024 KDD 2024

Slide 27

Slide 27 text

© LY Corporation Under the theme 'Global All-Engineer Collaboration Forum,' nearly 200 engineers from Korea, Taiwan, Thailand, and Vietnam gathered at the LY Kioicho office. The aim was to 'meet, get to know, and unite through technology and people.' They shared knowledge and deepened interactions with LY engineers. 27 Tech Week Community

Slide 28

Slide 28 text

© LY Corporation Hack Day is an annual hackathon festival at LY Corporation. Employees are given a total of 24 hours to freely develop a product prototype. Hack Day provides an opportunity to forge new relationships beyond daily work and explore cutting-edge technology. We warmly welcome your participation. 28 Hack Day Community

Slide 29

Slide 29 text

© LY Corporation 30 Tech Blog We promote the technology and development culture that underpins the services of LY Corporation and our group companies. All employees involved in development are encouraged to write and publish their technical knowledge. Our editorial team offers writing support and advice. Media Information LY Corporation Tech Blog

Slide 30

Slide 30 text

© LY Corporation We share LY's technical initiatives and engineering culture with the public through owned media and social media platforms. Specifically, we use the following platforms: ・X（@lycorptech_jp）・YouTube（@lycorptech_jp）・Speaker Deck（lycorptech_jp） We also welcome requests for uploading slides and videos from technical conference presentations. This supports our engineers in sharing their information and insights. 31 Technology Portal / SNS Media Information LY Corporation X account

Slide 31

Slide 31 text

© LY Corporation 32 Tech Language Support To foster an environment where engineers from diverse backgrounds can excel, we offer language support programs for those in need, upon their manager's recommendation. • English Language Programs • Japanese Language Programs • Yasashii Communication *These are exclusive programs for the engineering organization, distinct from the ones provided by a corporate benefit Others

Slide 32

Slide 32 text

Slide 33

Slide 33 text

© LY Corporation Job Openings for New Graduates • Server-side • Client (iOS/Android) Software Engineer • Artificial Intelligence (AI) / Machine Learning Data Science • Cloud Platform Infrastructure Engineer Recruitment of new graduate engineers is conducted through three different courses

Slide 34

Slide 34 text

© LY Corporation Application Qualifications Requirements - Join in 2026 (April or October) -Only those without full-time working experience can apply for this role. -For visa purposes, applicants are required to have a degree in a relevant field. Work location Remote work is possible with stable internet and no disruption to work. Residence You can live anywhere as long as you reside in Japan. Working hours - Flexible hours with no set core time - Standard workday of 7.75 hours.

Slide 35

Slide 35 text

© LY Corporation Selection Process • Please submit an application through the career site. • We will hold interviews. • One interview will take around 60-90 minutes. • We also offer online interviews through Zoom regardless of whether the candidate resides in Japan or overseas. • We will reach out to Successful candidates to discuss offers. • Please complete the coding test by the deadline.

Slide 36

Slide 36 text

© LY Corporation Re-Challenge System Re-Challenge System - The Re-Challenge System allows coding test retakes in future terms. - Unlimited retakes until the final term to reduce exam stress. - Open to any applicants interested in our coding tests. - Applicants can apply for different positions each term. - No retakes for interviews

Slide 37

Slide 37 text

© LY Corporation About Coding Test LY coding test consists of two questions: one general algorithm problem and one business-oriented implementation problem. Key Considerations for Solving Implementation Problems Read the Specifications Carefully : The emphasis here is on the importance of thoroughly understanding the specifications or requirements before starting any development work. In real-world scenarios, creating even a single feature can involve a lot of detailed specifications. Misunderstanding these can lead to errors, so the ability to accurately read and interpret problems is essential for delivering quality services. Focus on Code Readability and Clear Design:his point highlights the value of writing code that is easily readable and well-designed, especially in a team setting. At LY, teamwork is crucial, so it's important that your code is not just functional but also easy for others to read and understand. This facilitates collaboration and ensures that the team can work effectively together. Aim to Pass All Visible Test Cases:The advice here is to avoid scoring zero by ensuring that you pass at least one test case. This means starting with a basic implementation that works for simpler cases before tackling more complex ones. By doing so, you build a foundation and gradually improve your solution, which helps in securing some points even if the complete solution isn't reached immediately.

Slide 38

Slide 38 text

© LY Corporation About Interviews In LY interviews, candidates are evaluated on their ability to abstract and understand problems, devise concrete solutions based on that understanding, and further enhance the results. Questions to Consider in Preparation for the Interview • How can you effectively accomplish work both individually and as a member of a team? • What challenges have you faced in school or at work, and how did you overcome those obstacles? • Which of your skills or experiences do you think would be beneficial for this role, and why? If you do not understand a question, feel free to ask the interviewer for clarification and take your time to formulate your answer.