All About Sansan – for New Global Engineers 

© Sansan, Inc. About Sansan 

© Sansan, Inc. Sansan, Inc. 3 About Sansan June 11, 2007 7,291 million yen (as of November 30, 2025) Kamiyama Lab Sansan Innovation Lab Nagaoka Lab Sansan Global Pte. Ltd. （Singapore） Sansan Global Development Center, Inc.（Philippines） Sansan Global (Thailand) Co., Ltd. logmi, Inc. Ninout, Inc. Institute of Language Understanding Inc. Established Capital stock Head Office Kansai Branch Fukuoka Branch Chubu Branch Locations Satellite offices Group companies Tokyo Stock Exchange Prime Market Listed stock exchange Planning, development, and sales of digital transformation services that change how people work Business Chika Terada Representative The concept behind Sansan The suffix or honorific “-san" symbolizes "person,” like Mr. and Ms. in English. Sansan stands for people and their encounters with each other. We hope to create encounters that change the world. The red line represents that desire. Sansan Bill One Contract One Sansan Data Intelligence Eight Main services 

© Sansan, Inc. About Sansan A company is like a person, but it does not necessarily have a form, a “Katachi”, that you can see and touch. Companies do, however, have personalities, goals and values like people do. Since our inception, we have given our company its “Katachi” through the principles we instill in it. As our company continues to grow, we add to and renew our principles, and the “Katachi” evolves. The Katachi of Sansan – Our corporate philosophy 

© Sansan, Inc. Turning encounters into innovation Our world has always been driven by encounters. People encounter people. Companies encounter companies. These chains of encounters move society forward. We rediscover the potential of every encounter and transform it into unique business data. That data sparks new encounters that lead to innovation, and it becomes the basis for entirely new ways of working. Unrestricted by the accepted ways of doing each task and process, we reshape what’s taken for granted in business. Mission About Sansan 

© Sansan, Inc. Transport networks, electrical grids, the internet. These are some of the roads of society. We believe another road is possible. A new form of infrastructure for the business world. This road connects people with people, companies with companies, and turns everyday business into innovation. We aim to be that new road, that business infrastructure. Become business infrastructure Vision About Sansan 

© Sansan, Inc. Our services 

© Sansan, Inc. AI transformation solutions that reshape how we work Our solutions Our mission: Turning encounters into innovation Providing AI transformation solutions that reshape how we work, linking encounters with people and companies to business opportunities, and developing solutions in a range of business areas. DX for Individuals DX for Corporate Sansan’s AX solutions reshape how we work People and companies first encounter each other Building the encounter Results of the encounter Building a network of encounters 

© Sansan, Inc. Organization 

© Sansan, Inc. Organizational structure overview Organization Our organizational structure is divided into 4 main products. Contract One Division PR, Branding, Business Development, Global Business Promotion, etc. Other departments Engineers, R&D, System Management, CSIRT, etc. Engineering Division Sansan Division Marketing, Inside Sales, Sales, Customer Success, etc. Bill One Division Marketing, Inside Sales, Sales, Customer Success, etc. Eight Division Marketing, Inside Sales, Sales, Customer Success, etc. Marketing, Sales, etc. COO Team ※COO＝Chief Operating Officer Finance, Accounting, Legal, etc. Corporate Division Recruitment, Labor, Employee Success, etc. HR Division 

© Sansan, Inc. An Engineering Unit works with each product unit and a group handles core technologies. Engineering Division Organization Engineering Division Digitization Department Data Alliance Department R&D Department Sansan Engineering Unit Eight Engineering Unit CTO Team Contract One Engineering Unit Platform Engineering Unit VPoE Team Bill One Engineering Unit Corporate System Department Data Intelligence Engineering Unit Quality Assurance Engineering Unit Overseas Support Team Information Security Department 

the accounting AX solution Bill One 

© Sansan, Inc. Bill One – the accounting AX solution Our solutions ｜ Bill One Bill One is the accounting AX solution that solves business challenges in invoice receipt, expense reimbursement, and accounts receivable. Redefine the unnecessary. Transform how your company works. 

© Sansan, Inc. Bill One’s value proposition Our solutions ｜ Bill One One-stop receipt of invoices in any format and centralized management of invoices for contracting companies *When conditions specified by Sansan are met. One-stop receipt 99.9% digitization accuracy Cloud-based centralized management Companies issuing invoices Bill One contracting companies Upload Postal mail Proxy receipt Proxy scanning v Email attachment 

© Sansan, Inc. Bill One’s 3 main benefits Receive all invoices online Build legally compliant workflows Increased productivity organization- wide, not only for accounting Our solutions ｜ Bill One 

© Sansan, Inc. Sales and growth Our solutions ｜ Bill One Source: Presentation Materials for FY2025 Q2 

© Sansan, Inc. Bill One global expansion Bill One is expanding its invoice network to Singapore and Thailand. Our solutions ｜ Bill One 

© Sansan, Inc. Designers Engineers Customer Dev. Team (~230 members) PdM Customer Success Sales Marketing PMM Product Dev. Team (~70 members) Architects Division organizational structure Our solutions ｜ Bill One 

© Sansan, Inc. Development cycle and events Our solutions ｜ Bill One Agile development incorporating scrum development essentials Refinement Morning mtgs. (daily) Planning Demos (3 per week) Reflection Sharing learnings 1 week Case-by-case releases (up to 12 per day) Product backlog 

© Sansan, Inc. Initiatives for improving culture Our solutions ｜ Bill One ▲ OST in Teamflow - Encourage zasso (chats/consultation), learning, discussion > Morning meeting, Lunch meeting > Virtual office tools (Teamflow) > Learning sessions (sharing development learnings) > Lessons learned sharing mtgs. (lessons from bugs, etc.) - Improvements apart from functional development > Version upgrade, enhance week > Horizontal teams and guilds > Technical backlogs 

© Sansan, Inc. Attractive aspects of work Our solutions ｜ Bill One - Business is strong and could become one of the largest SaaS businesses in the country - Startup-like speed and response to market development - Able to deal with product value and user value together with business side - Work on full stack from front-end to infrastructure - Continuous investment outside of functional development of products, such as refactoring, operational improvements, version upgrades - Exciting developments 

© Sansan, Inc. Bill One – Cloud-based invoice management solution Category Technology stack Programming languages, libraries, etc. Front end HTML, CSS, TypeScript, React.js Back end Kotlin, Ktor Other Docker, Cloud Build Infrastructure GCP (Cloud Run, Cloud Functions, Cloud Tasks, etc.) Database Cloud SQL (PostgreSQL) Monitoring Cloud Logging, Sentry CI Cloud Build Code management GitHub Our solutions ｜ Bill One 

Research and Development 

© Sansan, Inc. From R&D to providing and maintaining applications for business use R&D Department Academia Medium- to long-term initiatives, R&D Developing core technologies Release & operation of apps and APIs Joint research Submitting papers Conference sponsorship Study group sponsorship & participation Data structuring for various solutions A/B testing Internal data analysis Verifying new services OCR Name recognition Digitization APIs Sansan Labs Data infrastructure Deployment infrastructure Form Data Extraction Technology 

© Sansan, Inc. Position of each R&D theme in business areas R&D Department Image processing, recognition Natural language processing Machine learning Data science, causal inference Data visualization, product management New business Sales, CS (internal issues) Contract termination and usage promotion (CS) Sales efficiency (sales) Scene text recognition Object detection Automated input OCR, item segmentation. etc. Vision Language Model Feature word assessment Company keywords Eigen expression extraction Email signature capture Eigen expression extraction News delivery Document classification ResNet Company logo extraction Graph embeding Recommendations Label prediction Name matching RCT A/B testing and effectiveness verification Panel data analysis Sansan Labs (new feature development) Key value extraction Digitizing forms Graph neural network Vision Language Model 

© Sansan, Inc. R&D Department members R&D Department Researchers, data scientists MLOps, DevOps engineers Data engineers, analytics engineers Product managers Product organization Mainly responsible for highly accurate digitization of business cards and forms, and R&D of functions that utilize data to increase product value from the accumulated data to the service release Ensure quality, availability, security, and observability of services, and build and promote deployment infrastructure for continuous and rapid releases with increasing trial-and-error by researchers Lead design and development of analytical infrastructure used by the R&D Dept. Provide data from various logs generated by company's products, data collaboration partners, etc., to the company in an easy-to- use form. Lead development and verification of features for continuous and discontinuous growth of each product working with the product organization 

© Sansan, Inc. Environment that encourages data utilization R&D Department System that enables collaboration with operators to produce high-quality training data Training data Operator Training model Promoting data utilization with a data analysis platform that aggregates business data Data analysis platform Press release Financial info Business cards Company info Publication News News delivery AB testing Data science report Recommendations Network analysis 

© Sansan, Inc. How projects proceed R&D Department ⁃ Establish company-wide OKRs every 3 months ⁃ Top-down and bottom-up formulation, and mutual coordination ⁃ OKRs are not goals for incremental progress, but rather for leaps forward ⁃ R&D Department separates ambitious OKRs and committed OKRs that are not expected to achieve everything → Ready to tackle major challenges OKR examples: Increase product value for Sansan's 30% growth → Improve the quality of email signature capture to achieve sales DX ⁃ By end of X month, Y algorithm's precision will be Z%. ⁃ … → Scale Sansan Labs and create sales DX-leading features ⁃ Reduce development lead time by YY% by end of X month compared with previous quarter ⁃ Release Y applications by end of X month ⁃ … To achieve OKRs Work as a project Communicate, measure, and achieve ambitious goals Objectives and key results (OKRs) 

© Sansan, Inc. Leadership development Organizational expansion Transferring authority Organizational flattening Small-scale development R&D Department R&D Department members Approx. 5 people per team, w/10 teams in total (as of Nov. 2023) - Teams are not strictly divided by areas of expertise, etc., but rather are organized so it's easy to work on related projects - Team composition reviewed on a case-by-case basis 

© Sansan, Inc. Technology stack and development process R&D Department Main languages used Python, R, C#, C++ Cloud AWS, GCP (Google Cloud Platform) Source code management GitHub Libraries and frameworks used Choose freely according to theme Implementation in production environment Docker container tech and… AWS (Batch, Lambda, SageMaker. etc.), GCP (AppEngine, Kubernetes. etc.) PCs Choice of Windows PC, MacBook; AWS or GCP instances available Data accumulation Service creation Assessment Release Learning A/B testing Pretreatment Inference Machine learning systems workflow 

© Sansan, Inc. Expectations, roles DevOps, MLOps engineers - Work w/researchers to promote technical solutions to development and operational issues - Initiatives to support and promote digitization automation - Design, build, and operate of digitization systems that are highly accurate, low-cost, and have high throughput - Ensure quality of service, availability, security, and observability of algorithms and machine learning models developed by researchers to run in the production environment - Productivity improvement initiatives within the R&D Department 

© Sansan, Inc. Automation of business card data entry DevOps, MLOps engineers Solutions Business card digitization system (GEES) - Collection of micro-tasks subdivided for fast, low-cost, secure digitization Automation through image processing tech - NineOCR: Proprietary OCR engine specialized for business cards - Smart capture: On-device business card detection + OCR engine for immediate delivery - Language and handwriting determination: Attribute determination of business cards not based on text information Results - Lower business card data entry costs - Improved digitization accuracy of user's immediate primary deliveries Business challenge Minimize digitization costs and accelerate delivery while achieving near-100% accuracy Language determination Attribute determination of business cards not based on text information Smart capture On-device business card detection + OCR engine for immediate delivery NineOCR Proprietary OCR engine specialized for business cards 

© Sansan, Inc. Digitizing invoice data entry Invoice image entry, digitization system Entry Digitization Automation engine Operator Invoice digitizing system utilizing our business card digitizing expertise Invoice image Invoice data User company Bill One entry DevOps, MLOps engineers 

© Sansan, Inc. The value of doing this work DevOps, MLOps engineers Visible results System modifications, such as improving the processing accuracy, can easily show immediate results in the form of improved user experience and cost reduction. You're responsible for digitization, the source of our value. Your responsibilities are great, but your results will also be impactful. You'll always feel that your work is needed. Close to researchers Involved in new development and modernization We aim for close channels of communication with our researchers by integrating them organizationally, having regular meetings, etc. We discuss new measures, business challenges, improvement plans, etc., and create a system that allows researchers and one another to immediately identify such topics and act on them. You're involved in various tasks, including creation of new solutions and operation and modernization of existing solutions. As many of our services are microservices, development and operation of each is relatively less difficult, and you can exercise a great deal of flexibility. 

© Sansan, Inc. R&D Department Categoryv Technology stack Programming language, library, etc. Front end Back end Python (3.7–3.11), C# (.NET 6–7, .NET Framework 4.8), C++ (11–20) Other Docker, ASP.NET Core / MVC, Terraform, Argo Workflows, Argo Rollouts, Apache Airflow, SageMaker Infrastructure AWS, Google Cloud Database Aurora (MySQL), S3, Athena, OpenSearch, DynamoDB, BigQuery, Firestore, CloudSQL Monitoring Datadog, CloudWatch, Cloud Monitoring Container orchestration Amazon EKS, Amazon ECS, Cloud Run, App Engine CI/CD GitHub Actions, Reviewdog, CircleCI, Jenkins, CodeBuild, CodePipeline, ArgoCD Machine learning library PyTorch, TensorFlow Code management GitHub Technology stack 

© Sansan, Inc. Working environment 

© Sansan, Inc. Office-centric is the best way to work What is office-centric? At Sansan, we assume an office-centric work style, with everyone sharing the same space and time to realize our mission and vision with a seven- person, eight-legged team. Various chance encounters and communication in the office can lead directly to new results and innovation. We position the office as an important venue to create such breakthrough growth. How we work While being office-centric is our basis, we also use remote work, outside the office, from the standpoint of diversity, efficiency, and convenience. Employees can choose their work locations, taking responsibility for their own work style and results. Sansan’s work style Working environment © Sansan, Inc. 

© Sansan, Inc. How we work Working environment Flextime Flexible working hours for engineering and research positions *Core time: 10 a.m. to 4 p.m. Can work less than the designated working hours with supervisor's approval Collaborate across locations In addition to the Omotesando head office, we collaborate and develop across Japan and overseas locations We've developed across locations since around 2013, and have a system and culture that enables efficient online collaboration Make your own choices, taking advantage of the best aspects of online and offline Side jobs available (*approval system) Lunchtime study sessions (*subsidized) *There are rules on side jobs, but if they are within the scope of those rules, they are generally approved. *Subsidies for social gatherings during in-house study sessions (¥1,000/person) 

© Sansan, Inc. Where we are – Overseas (group companies) Working environment Singapore Sansan Global Pte. Ltd. Cebu, Philippines Sansan Global Development Center, Inc. Thailand Sansan Global Pte. Ltd. Japan Main office 

© Sansan, Inc. Where we are – Japan Working environment Nagaoka Lab Kamiyama Lab Kansai Branch Chubu Branch Sansan Innovation Lab Fukuoka Branch Head Office 

© Sansan, Inc. Head Office Working environment 

© Sansan, Inc. Kansai Branch, Kansai Lab Working environment 

© Sansan, Inc. Sansan Innovation Lab Working environment 

© Sansan, Inc. Kamiyama Lab Working environment 

© Sansan, Inc. Sansan Global Development Center (temporary) Working environment 

© Sansan, Inc. Events Working environment 

© Sansan, Inc. HR initiatives 

© Sansan, Inc. HR initiative design philosophy HR initiatives Our internal system must allow for highly productive ways of working that encourage business growth Aiming to achieve further business growth Turning encounters into innovation Mission 

© Sansan, Inc. Facilitating communication HR initiatives ・Yoriai Provides after-work drinks (including alcohol) and light snacks to create a relaxed setting for casual conversation within and across departments ・Nana-hachi (7-8) Provides opportunities for new employees to interact with members outside of their assigned departments and learn about Sansan's operations and other members ・Katachi Salon Opportunity to discuss the Katachi of Sansan with management 

© Sansan, Inc. Sansan Family Day 33: Sansan Day Events HR initiatives In-house study meetings Anniversary party Yoiko (in-house activities) 

© Sansan, Inc. Appendix 

© Sansan, Inc. Total employees Organization 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 ~5 ~100 ~ 1,000 ~ 600 ~50 *Employees as of November 30, 2025 : 1,979 ~2,000 In the last 4 years... we’ve grown by 1000+ people We’ll keep growing! 

© Sansan, Inc. Age ranges 43% 20s 44% 12% 40s and up 30s as of May 2025 Permanent and contract employees Organization 

© Sansan, Inc. Job roles 77% Engineering 17% Creative General 4% R&D 2% Organization as of May 2025 Permanent and contract employees 

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