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Introduction to Bill One Development Engineer

Introduction to Bill One Development Engineer

This document provides an introduction to the Bill One Engineering Unit.

◉ Careers at Sansan Engineering Division
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Sansan, Inc.

June 12, 2025
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  1. © Sansan, Inc. Recruitment Latest issues 6 30 INDEX Development

    Organizational structure Development Culture 3 4 5 About Sansan Our services Mission, Vision 1 2 02 14 17 21 25 Our appeal 7 31
  2. © Sansan, Inc. Bill One is an invoice management solution

    from Sansan, Inc. Through Bill One, corporate users can receive all invoices (paper or electronic), by post or email, and quickly and accurately digitize them for processing and approval. Its centralized, cloud-based management modernizes inefficient, analog practices. Bill One speeds up management’s decision-making and streamlines the monthly closing process. Accounting DX that reshapes how your company works
  3. © Sansan, Inc. Bill One’s value proposition 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
  4. © Sansan, Inc. Bill One’s 3 main benefits Receive all

    invoices online Build legally compliant workflows Increased productivity organization- wide, not only for accounting
  5. © Sansan, Inc. Sales and growth (2) Target values 75

    200 million yen base 100 million yen base Bill One 100, million yen
  6. © Sansan, Inc. Total feedback CS and sales receive user

    feedback from over 300 users per month (last 6 months) month
  7. © Sansan, Inc. Mission Statement Invoicing remains a largely analog

    process. We are transforming every invoice interaction into a digital one. We consolidate invoice information and transform business processes to speed up monthly closing. And we will speed up management by changing centralized invoice information into a company-wide asset and transforming the decision- making process.
  8. © Sansan, Inc. Vision Build a worldwide invoice network Invoice

    network Receiving companies Issuing companies Automating routine tasks using connected information Digital interaction accelerates invoicing transactions Advancing digitization of issuing companies through user-friendly DX
  9. © Sansan, Inc. Designers Engineers Customer Dev. Team (~230 members)

    PdM Customer Success Sales Marketing PMM Product Dev. Team (~70 members) Architects Division organizational structure
  10. © Sansan, Inc. Kansai Branch Fukuoka Branch Head Office Chubu

    Branch Product development team 4 locations (+overseas) 18 teams 5 people (1 team) Overseas offices Sansan Global Development Center, Inc. (Philippines)
  11. © Sansan, Inc. 3L system Initiatives to expand the scope

    of team decision-making and speed up development Role Duties ATL (Agile Team Lead) • Promote establishment of self-organized agile teams • Ongoing leadership, planning, execution, risk mitigation, improvement PdL (Product Lead) • Organize specifications and requirements • Coordinate ATL, PdM, design *PdM organizes all PdLs TL (Technical Lead) • Ensure code quality • Improve team’s technical skills • Back-end advisor where logic is focused *These are not job titles; they are roles to be shared within the team Creating an environment that allows you to readily take on challenges and focus on the skills you want to develop Secondary effect
  12. © Sansan, Inc. Technologies and tools used Front-end / BFF

    Server-side Infrastructure Database Document React express Tool chromatic GitHub Copilot
  13. © Sansan, Inc. Development cycle and events Agile development incorporating

    the essence of Scrum Refinement Daily morning meetings Planning Demos (3 times a week) Reflection Learning sharing 1 week Case-by-case releases (up to 12 a day) Product backlog
  14. © Sansan, Inc. Concepts that foster organizational culture - Make

    the final decision yourself after repeated discussion - Determine the essence, quickly output, and make repeated improvements - Give constructive feedback to one another - Continuous learning and change - Everyone takes a leadership role - Value the sense of excitement Culture we aim for Culture-building approach HRT (humility, respect, trust) Individuals act independently, grow, and have a strong sense of unity, with the highest priority on business outcomes
  15. © Sansan, Inc. Ideas valued in organizational technology - Keep

    specs simple - Build on valuable technology - Balance development speed and quality - Improve with ownership - Output the challenge and learn from the team Maintain development speed, continue delivering value for years to come
  16. © Sansan, Inc. Initiatives for improving culture - 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 ▲ Teamflow study group in progress
  17. © Sansan, Inc. Latest issues 1. System scaling Adding features,

    strengthening infrastructure, improving quality as business expands 2. Lack of engineer resources Want to enable execution of business expansion strategies from various angles 3. Organizational scaling Building an organization that can withstand rapid increase of members Challenges from our rapid business expansion
  18. © Sansan, Inc. Attractive aspects of work - 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
  19. © Sansan, Inc. Career path Introduction of mission grades (role

    grading system): Expected roles and levels of difficulty change for each grade - The higher the mission grade, the greater the sphere of influence e.g., Change from individual → team → group → department → company. Responsible not only for internal coordination but also external coordination, etc. - Salary set for each grade *The above are basic career paths. Assistant Group Manager (MS or higher) Group Manager (M1 or higher) Deputy Head (M3 or higher) Head (M4 or higher) Director, Division Head
  20. © Sansan, Inc. Initiatives to accelerate growth Q-by-Q evaluation -

    Self-evaluation and appeals to members - 360-degree evaluation - Evaluation feedback Personal goals using the will-can-must framework - Own future, current analysis, challenges, and specific actions - Sharing and feedback within team, also viewable by non-team members - Reflection
  21. © Sansan, Inc. Role models - Uses technical skills and

    expertise to drive projects forward - Consults with team members and decides when skills are lacking - Proactively takes part in study groups and works on improvements, such as with the development flow - Strengths in server-side development and familiarity with cloud computing - Can design for large amounts of data - Experienced in developing in various programming languages, can write balanced test code - Can share knowledge with others and has excellent insight and solutions post-mortem - Makes critical technical decisions with deep understanding of the technical domain and business strategy - Serves as go-to for advanced, complex design and architecture consultation to ensure quality - Responds accordingly to new technological initiatives S5 Engineer A P1 Engineer B P2 Engineer C